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Add support for musig2 (#93)

Browse Source 
* Use Jonas Nick's musig2 branch

* Reformat c code (no functional changes)

* Implement musig2

* Add documentation to musig2 functions (#97)

Usage of the Musig2 functions isn't intuitive at all, especially with
the key aggregation cache and session data. It's important to provide
accurate documentation to help users understand how to correctly produce
musig2 signatures.

We also change argument names to match Kotlin best practices instead of
using the same argument names as C functions.

* Add musig2 reference tests (no functional changes)

---------

Co-authored-by: Bastien Teinturier <31281497+t-bast@users.noreply.github.com>
This commit is contained in:
Fabrice Drouin 2024-02-14 13:28:22 +01:00 committed by GitHub
parent 780f97e46d
commit 202b0c94b6
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
24 changed files with 2818 additions and 518 deletions
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2
.gitmodules vendored
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@ -1,3 +1,3 @@
[submodule "native/secp256k1"]
path = native/secp256k1
url = https://github.com/bitcoin-core/secp256k1.git
url = https://github.com/jonasnick/secp256k1.git

2
build.gradle.kts
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@ -22,7 +22,7 @@ buildscript {
allprojects {
group = "fr.acinq.secp256k1"
version = "0.14.0-SNAPSHOT"
version = "0.14.0-MUSIG2-SNAPSHOT"
repositories {
google()

100
jni/c/headers/java/fr_acinq_secp256k1_Secp256k1CFunctions.h
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@ -7,6 +7,34 @@
#ifdef __cplusplus
extern "C" {
#endif
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_TYPE_CONTEXT
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_TYPE_CONTEXT 1L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_TYPE_COMPRESSION
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_TYPE_COMPRESSION 2L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_BIT_CONTEXT_VERIFY
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_BIT_CONTEXT_VERIFY 256L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_BIT_CONTEXT_SIGN
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_BIT_CONTEXT_SIGN 512L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_BIT_COMPRESSION
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_FLAGS_BIT_COMPRESSION 256L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_CONTEXT_VERIFY
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_CONTEXT_VERIFY 257L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_CONTEXT_SIGN
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_CONTEXT_SIGN 513L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_CONTEXT_NONE
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_CONTEXT_NONE 1L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_EC_COMPRESSED
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_EC_COMPRESSED 258L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_EC_UNCOMPRESSED
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_EC_UNCOMPRESSED 2L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_PUBLIC_NONCE_SIZE
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_PUBLIC_NONCE_SIZE 66L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_SECRET_NONCE_SIZE
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_SECRET_NONCE_SIZE 132L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_KEYAGG_CACHE_SIZE
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_KEYAGG_CACHE_SIZE 197L
#undef fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_SESSION_SIZE
#define fr_acinq_secp256k1_Secp256k1CFunctions_SECP256K1_MUSIG_SESSION_SIZE 133L
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_context_create
@ -167,6 +195,78 @@ JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256
JNIEXPORT jint JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1schnorrsig_1verify
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_nonce_gen
* Signature: (J[B[B[B[B[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1nonce_1gen
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jbyteArray, jbyteArray, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_nonce_agg
* Signature: (J[[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1nonce_1agg
(JNIEnv *, jclass, jlong, jobjectArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_pubkey_agg
* Signature: (J[[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1pubkey_1agg
(JNIEnv *, jclass, jlong, jobjectArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_pubkey_ec_tweak_add
* Signature: (J[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1pubkey_1ec_1tweak_1add
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_pubkey_xonly_tweak_add
* Signature: (J[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1pubkey_1xonly_1tweak_1add
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_nonce_process
* Signature: (J[B[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1nonce_1process
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_partial_sign
* Signature: (J[B[B[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1partial_1sign
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_partial_sig_verify
* Signature: (J[B[B[B[B[B)I
*/
JNIEXPORT jint JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1partial_1sig_1verify
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jbyteArray, jbyteArray, jbyteArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_musig_partial_sig_agg
* Signature: (J[B[[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1musig_1partial_1sig_1agg
(JNIEnv *, jclass, jlong, jbyteArray, jobjectArray);
#ifdef __cplusplus
}
#endif

1589
jni/c/src/fr_acinq_secp256k1_Secp256k1CFunctions.c
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38
jni/src/main/java/fr/acinq/secp256k1/Secp256k1CFunctions.java
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@ -29,6 +29,26 @@ public class Secp256k1CFunctions {
public static final int SECP256K1_EC_COMPRESSED = (SECP256K1_FLAGS_TYPE_COMPRESSION | SECP256K1_FLAGS_BIT_COMPRESSION);
public static final int SECP256K1_EC_UNCOMPRESSED = (SECP256K1_FLAGS_TYPE_COMPRESSION);
/**
* A musig2 public nonce is simply two elliptic curve points.
*/
public static final int SECP256K1_MUSIG_PUBLIC_NONCE_SIZE = 66;
/**
* A musig2 private nonce is basically two scalars, but should be treated as an opaque blob.
*/
public static final int SECP256K1_MUSIG_SECRET_NONCE_SIZE = 132;
/**
* When aggregating public keys, we cache information in an opaque blob (must not be interpreted).
*/
public static final int SECP256K1_MUSIG_KEYAGG_CACHE_SIZE = 197;
/**
* When creating partial signatures and aggregating them, session data is kept in an opaque blob (must not be interpreted).
*/
public static final int SECP256K1_MUSIG_SESSION_SIZE = 133;
public static native long secp256k1_context_create(int flags);
public static native void secp256k1_context_destroy(long ctx);
@ -68,4 +88,22 @@ public class Secp256k1CFunctions {
public static native byte[] secp256k1_schnorrsig_sign(long ctx, byte[] msg, byte[] seckey, byte[] aux_rand32);
public static native int secp256k1_schnorrsig_verify(long ctx, byte[] sig, byte[] msg, byte[] pubkey);
public static native byte[] secp256k1_musig_nonce_gen(long ctx, byte[] session_id32, byte[] seckey, byte[] pubkey, byte[] msg32, byte[] keyagg_cache, byte[] extra_input32);
public static native byte[] secp256k1_musig_nonce_agg(long ctx, byte[][] nonces);
public static native byte[] secp256k1_musig_pubkey_agg(long ctx, byte[][] pubkeys, byte[] keyagg_cache);
public static native byte[] secp256k1_musig_pubkey_ec_tweak_add(long ctx, byte[] keyagg_cache, byte[] tweak32);
public static native byte[] secp256k1_musig_pubkey_xonly_tweak_add(long ctx, byte[] keyagg_cache, byte[] tweak32);
public static native byte[] secp256k1_musig_nonce_process(long ctx, byte[] aggnonce, byte[] msg32, byte[] keyagg_cache);
public static native byte[] secp256k1_musig_partial_sign(long ctx, byte[] secnonce, byte[] privkey, byte[] keyagg_cache, byte[] session);
public static native int secp256k1_musig_partial_sig_verify(long ctx, byte[] psig, byte[] pubnonce, byte[] pubkey, byte[] keyagg_cache, byte[] session);
public static native byte[] secp256k1_musig_partial_sig_agg(long ctx, byte[] session, byte[][] psigs);
}

36
jni/src/main/kotlin/fr/acinq/secp256k1/NativeSecp256k1.kt
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@ -92,6 +92,42 @@ public object NativeSecp256k1 : Secp256k1 {
return Secp256k1CFunctions.secp256k1_schnorrsig_sign(Secp256k1Context.getContext(), data, sec, auxrand32)
}
override fun musigNonceGen(sessionId32: ByteArray, privkey: ByteArray?, aggpubkey: ByteArray, msg32: ByteArray?, keyaggCache: ByteArray?, extraInput32: ByteArray?): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_nonce_gen(Secp256k1Context.getContext(), sessionId32, privkey, aggpubkey, msg32, keyaggCache, extraInput32)
}
override fun musigNonceAgg(pubnonces: Array<ByteArray>): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_nonce_agg(Secp256k1Context.getContext(), pubnonces)
}
override fun musigPubkeyAgg(pubkeys: Array<ByteArray>, keyaggCache: ByteArray?): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_pubkey_agg(Secp256k1Context.getContext(), pubkeys, keyaggCache)
}
override fun musigPubkeyTweakAdd(keyaggCache: ByteArray, tweak32: ByteArray): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_pubkey_ec_tweak_add(Secp256k1Context.getContext(), keyaggCache, tweak32)
}
override fun musigPubkeyXonlyTweakAdd(keyaggCache: ByteArray, tweak32: ByteArray): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_pubkey_xonly_tweak_add(Secp256k1Context.getContext(), keyaggCache, tweak32)
}
override fun musigNonceProcess(aggnonce: ByteArray, msg32: ByteArray, keyaggCache: ByteArray): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_nonce_process(Secp256k1Context.getContext(), aggnonce, msg32, keyaggCache)
}
override fun musigPartialSign(secnonce: ByteArray, privkey: ByteArray, keyaggCache: ByteArray, session: ByteArray): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_partial_sign(Secp256k1Context.getContext(), secnonce, privkey, keyaggCache, session)
}
override fun musigPartialSigVerify(psig: ByteArray, pubnonce: ByteArray, pubkey: ByteArray, keyaggCache: ByteArray, session: ByteArray): Int {
return Secp256k1CFunctions.secp256k1_musig_partial_sig_verify(Secp256k1Context.getContext(), psig, pubnonce, pubkey, keyaggCache, session)
}
override fun musigPartialSigAgg(session: ByteArray, psigs: Array<ByteArray>): ByteArray {
return Secp256k1CFunctions.secp256k1_musig_partial_sig_agg(Secp256k1Context.getContext(), session, psigs)
}
override fun cleanup() {
return Secp256k1CFunctions.secp256k1_context_destroy(Secp256k1Context.getContext())
}

2
native/build-android.sh
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@ -33,7 +33,7 @@ export STRIP=$ANDROID_NDK/toolchains/llvm/prebuilt/$TOOLCHAIN/bin/llvm-strip
cd secp256k1
./autogen.sh
./configure CFLAGS=-fpic --host=$TARGET --enable-experimental --enable-module_ecdh --enable-module-recovery --enable-module-schnorrsig --enable-benchmark=no --enable-shared=no --enable-exhaustive-tests=no --enable-tests=no
./configure CFLAGS=-fpic --host=$TARGET --enable-experimental --enable-module_ecdh --enable-module-recovery --enable-module-schnorrsig --enable-module-musig --enable-benchmark=no --enable-shared=no --enable-exhaustive-tests=no --enable-tests=no
make clean
make

2
native/build-ios.sh
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@ -6,7 +6,7 @@ cp xconfigure.sh secp256k1
cd secp256k1
./autogen.sh
sh xconfigure.sh --enable-experimental --enable-module_ecdh --enable-module-recovery --enable-module-schnorrsig --enable-benchmark=no --enable-shared=no --enable-exhaustive-tests=no --enable-tests=no
sh xconfigure.sh --enable-experimental --enable-module_ecdh --enable-module-recovery --enable-module-schnorrsig --enable-module-musig --enable-benchmark=no --enable-shared=no --enable-exhaustive-tests=no --enable-tests=no
mkdir -p ../build/ios
cp -v _build/universal/ios/* ../build/ios/

2
native/build.sh
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@ -23,7 +23,7 @@ else
fi
./autogen.sh
./configure $CONF_OPTS --enable-experimental --enable-module_ecdh --enable-module-recovery --enable-module-schnorrsig --enable-benchmark=no --enable-shared=no --enable-exhaustive-tests=no --enable-tests=no
./configure $CONF_OPTS --enable-experimental --enable-module_ecdh --enable-module-recovery --enable-module-schnorrsig --enable-module-musig --enable-benchmark=no --enable-shared=no --enable-exhaustive-tests=no --enable-tests=no
make clean
make

2
native/secp256k1

@ -1 +1 @@
Subproject commit 1ad5185cd42c0636104129fcc9f6a4bf9c67cc40
Subproject commit dd4932b67b573b2366e729e869918b17964f5f83

107
src/commonMain/kotlin/fr/acinq/secp256k1/Secp256k1.kt
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@ -55,7 +55,7 @@ public interface Secp256k1 {
*/
public fun signSchnorr(data: ByteArray, sec: ByteArray, auxrand32: ByteArray?): ByteArray
/**
/**
* Convert an ECDSA signature to a normalized lower-S form (bitcoin standardness rule).
* Returns the normalized signature and a boolean set to true if the input signature was not normalized.
*
@ -149,10 +149,108 @@ public interface Secp256k1 {
compressed[0] = if (pubkey.last() % 2 == 0) 2.toByte() else 3.toByte()
compressed
}
else -> throw Secp256k1Exception("invalid public key")
}
}
/**
* Generate a secret nonce to be used in a musig2 signing session.
* This nonce must never be persisted or reused across signing sessions.
* All optional arguments exist to enrich the quality of the randomness used, which is critical for security.
*
* @param sessionId32 unique 32-byte session ID.
* @param privkey (optional) signer's private key.
* @param aggpubkey aggregated public key of all participants in the signing session.
* @param msg32 (optional) 32-byte message that will be signed, if already known.
* @param keyaggCache (optional) key aggregation cache data from the signing session.
* @param extraInput32 (optional) additional 32-byte random data.
* @return serialized version of the secret nonce and the corresponding public nonce.
*/
public fun musigNonceGen(sessionId32: ByteArray, privkey: ByteArray?, aggpubkey: ByteArray, msg32: ByteArray?, keyaggCache: ByteArray?, extraInput32: ByteArray?): ByteArray
/**
* Aggregate public nonces from all participants of a signing session.
*
* @param pubnonces public nonces (one per participant).
* @return 66-byte aggregate public nonce (two public keys) or throws an exception is a nonce is invalid.
*/
public fun musigNonceAgg(pubnonces: Array<ByteArray>): ByteArray
/**
* Aggregate public keys from all participants of a signing session.
*
* @param pubkeys public keys of all participants in the signing session.
* @param keyaggCache (optional) key aggregation cache data from the signing session. If an empty byte array is
* provided, it will be filled with key aggregation data that can be used for the next steps of the signing process.
* @return 32-byte x-only public key.
*/
public fun musigPubkeyAgg(pubkeys: Array<ByteArray>, keyaggCache: ByteArray?): ByteArray
/**
* Tweak the aggregated public key of a signing session.
*
* @param keyaggCache key aggregation cache filled by [musigPubkeyAgg].
* @param tweak32 private key tweak to apply.
* @return P + tweak32 * G (where P is the aggregated public key from [keyaggCache]). The key aggregation cache will
* be updated with the tweaked public key.
*/
public fun musigPubkeyTweakAdd(keyaggCache: ByteArray, tweak32: ByteArray): ByteArray
/**
* Tweak the aggregated public key of a signing session, treating it as an x-only public key (e.g. when using taproot).
*
* @param keyaggCache key aggregation cache filled by [musigPubkeyAgg].
* @param tweak32 private key tweak to apply.
* @return with_even_y(P) + tweak32 * G (where P is the aggregated public key from [keyaggCache]). The key aggregation
* cache will be updated with the tweaked public key.
*/
public fun musigPubkeyXonlyTweakAdd(keyaggCache: ByteArray, tweak32: ByteArray): ByteArray
/**
* Create a signing session context based on the public information from all participants.
*
* @param aggnonce aggregated public nonce (see [musigNonceAgg]).
* @param msg32 32-byte message that will be signed.
* @param keyaggCache aggregated public key cache filled by calling [musigPubkeyAgg] with the public keys of all participants.
* @return signing session context that can be used to create partial signatures and aggregate them.
*/
public fun musigNonceProcess(aggnonce: ByteArray, msg32: ByteArray, keyaggCache: ByteArray): ByteArray
/**
* Create a partial signature.
*
* @param secnonce signer's secret nonce (see [musigNonceGen]).
* @param privkey signer's private key.
* @param keyaggCache aggregated public key cache filled by calling [musigPubkeyAgg] with the public keys of all participants.
* @param session signing session context (see [musigNonceProcess]).
* @return 32-byte partial signature.
*/
public fun musigPartialSign(secnonce: ByteArray, privkey: ByteArray, keyaggCache: ByteArray, session: ByteArray): ByteArray
/**
* Verify the partial signature from one of the signing session's participants.
*
* @param psig 32-byte partial signature.
* @param pubnonce individual public nonce of the signing participant.
* @param pubkey individual public key of the signing participant.
* @param keyaggCache aggregated public key cache filled by calling [musigPubkeyAgg] with the public keys of all participants.
* @param session signing session context (see [musigNonceProcess]).
* @return result code (1 if the partial signature is valid, 0 otherwise).
*/
public fun musigPartialSigVerify(psig: ByteArray, pubnonce: ByteArray, pubkey: ByteArray, keyaggCache: ByteArray, session: ByteArray): Int
/**
* Aggregate partial signatures from all participants into a single schnorr signature. If some of the partial
* signatures are invalid, this function will return an invalid aggregated signature without raising an error.
* It is recommended to use [musigPartialSigVerify] to verify partial signatures first.
*
* @param session signing session context (see [musigNonceProcess]).
* @param psigs list of 32-byte partial signatures.
* @return 64-byte aggregated schnorr signature.
*/
public fun musigPartialSigAgg(session: ByteArray, psigs: Array<ByteArray>): ByteArray
/**
* Delete the secp256k1 context from dynamic memory.
*/
@ -161,6 +259,13 @@ public interface Secp256k1 {
public companion object : Secp256k1 by getSecpk256k1() {
@JvmStatic
public fun get(): Secp256k1 = this
// @formatter:off
public const val MUSIG2_SECRET_NONCE_SIZE: Int = 132
public const val MUSIG2_PUBLIC_NONCE_SIZE: Int = 66
public const val MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE: Int = 197
public const val MUSIG2_PUBLIC_SESSION_SIZE: Int = 133
// @formatter:on
}
}

4
src/nativeInterop/cinterop/libsecp256k1.def
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@ -1,7 +1,7 @@
package = secp256k1
headers = secp256k1.h secp256k1_ecdh.h secp256k1_recovery.h secp256k1_extrakeys.h secp256k1_schnorrsig.h
headerFilter = secp256k1/** secp256k1_ecdh.h secp256k1_recovery.h secp256k1_extrakeys.h secp256k1_schnorrsig.h secp256k1.h
headers = secp256k1.h secp256k1_ecdh.h secp256k1_recovery.h secp256k1_extrakeys.h secp256k1_schnorrsig.h secp256k1_musig.h
headerFilter = secp256k1/** secp256k1_ecdh.h secp256k1_recovery.h secp256k1_extrakeys.h secp256k1_schnorrsig.h secp256k1_musig.h secp256k1.h
staticLibraries.linux = libsecp256k1.a
libraryPaths.linux = c/secp256k1/build/linux/ native/build/linux/ native/build/darwin/

188
src/nativeMain/kotlin/fr/acinq/secp256k1/Secp256k1Native.kt
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@ -1,6 +1,7 @@
package fr.acinq.secp256k1
import kotlinx.cinterop.*
import platform.posix.memcpy
import platform.posix.size_tVar
import secp256k1.*
@ -40,6 +41,20 @@ public object Secp256k1Native : Secp256k1 {
return pub
}
private fun MemScope.allocPublicNonce(pubnonce: ByteArray): secp256k1_musig_pubnonce {
val nat = toNat(pubnonce)
val nPubnonce = alloc<secp256k1_musig_pubnonce>()
secp256k1_musig_pubnonce_parse(ctx, nPubnonce.ptr, nat).requireSuccess("secp256k1_musig_pubnonce_parse() failed")
return nPubnonce
}
private fun MemScope.allocPartialSig(psig: ByteArray): secp256k1_musig_partial_sig {
val nat = toNat(psig)
val nPsig = alloc<secp256k1_musig_partial_sig>()
secp256k1_musig_partial_sig_parse(ctx, nPsig.ptr, nat).requireSuccess("secp256k1_musig_partial_sig_parse() failed")
return nPsig
}
private fun MemScope.serializePubkey(pubkey: secp256k1_pubkey): ByteArray {
val serialized = allocArray<UByteVar>(65)
val outputLen = alloc<size_tVar>()
@ -48,6 +63,24 @@ public object Secp256k1Native : Secp256k1 {
return serialized.readBytes(outputLen.value.convert())
}
private fun MemScope.serializeXonlyPubkey(pubkey: secp256k1_xonly_pubkey): ByteArray {
val serialized = allocArray<UByteVar>(32)
secp256k1_xonly_pubkey_serialize(ctx, serialized, pubkey.ptr).requireSuccess("secp256k1_xonly_pubkey_serialize() failed")
return serialized.readBytes(32)
}
private fun MemScope.serializePubnonce(pubnonce: secp256k1_musig_pubnonce): ByteArray {
val serialized = allocArray<UByteVar>(Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
secp256k1_musig_pubnonce_serialize(ctx, serialized, pubnonce.ptr).requireSuccess("secp256k1_musig_pubnonce_serialize() failed")
return serialized.readBytes(Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
}
private fun MemScope.serializeAggnonce(aggnonce: secp256k1_musig_aggnonce): ByteArray {
val serialized = allocArray<UByteVar>(Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
secp256k1_musig_aggnonce_serialize(ctx, serialized, aggnonce.ptr).requireSuccess("secp256k1_musig_aggnonce_serialize() failed")
return serialized.readBytes(Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
}
private fun DeferScope.toNat(bytes: ByteArray): CPointer<UByteVar> {
val ubytes = bytes.asUByteArray()
val pinned = ubytes.pin()
@ -258,11 +291,162 @@ public object Secp256k1Native : Secp256k1 {
}
}
override fun musigNonceGen(sessionId32: ByteArray, privkey: ByteArray?, aggpubkey: ByteArray, msg32: ByteArray?, keyaggCache: ByteArray?, extraInput32: ByteArray?): ByteArray {
require(sessionId32.size == 32)
privkey?.let { require(it.size == 32) }
msg32?.let { require(it.size == 32) }
keyaggCache?.let { require(it.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE) }
extraInput32?.let { require(it.size == 32) }
val nonce = memScoped {
val secnonce = alloc<secp256k1_musig_secnonce>()
val pubnonce = alloc<secp256k1_musig_pubnonce>()
val nPubkey = allocPublicKey(aggpubkey)
val nKeyAggCache = keyaggCache?.let {
val n = alloc<secp256k1_musig_keyagg_cache>()
memcpy(n.ptr, toNat(it), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
n
}
secp256k1_musig_nonce_gen(ctx, secnonce.ptr, pubnonce.ptr, toNat(sessionId32), privkey?.let { toNat(it) }, nPubkey.ptr, msg32?.let { toNat(it) },nKeyAggCache?.ptr, extraInput32?.let { toNat(it) }).requireSuccess("secp256k1_musig_nonce_gen() failed")
val nPubnonce = allocArray<UByteVar>(Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
secp256k1_musig_pubnonce_serialize(ctx, nPubnonce, pubnonce.ptr).requireSuccess("secp256k1_musig_pubnonce_serialize failed")
secnonce.ptr.readBytes(Secp256k1.MUSIG2_SECRET_NONCE_SIZE) + nPubnonce.readBytes(Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
}
return nonce
}
override fun musigNonceAgg(pubnonces: Array<ByteArray>): ByteArray {
require(pubnonces.isNotEmpty())
pubnonces.forEach { require(it.size == Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE) }
memScoped {
val nPubnonces = pubnonces.map { allocPublicNonce(it).ptr }
val combined = alloc<secp256k1_musig_aggnonce>()
secp256k1_musig_nonce_agg(ctx, combined.ptr, nPubnonces.toCValues(), pubnonces.size.convert()).requireSuccess("secp256k1_musig_nonce_agg() failed")
return serializeAggnonce(combined)
}
}
override fun musigPubkeyAgg(pubkeys: Array<ByteArray>, keyaggCache: ByteArray?): ByteArray {
require(pubkeys.isNotEmpty())
pubkeys.forEach { require(it.size == 33 || it.size == 65) }
keyaggCache?.let { require(it.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE) }
memScoped {
val nPubkeys = pubkeys.map { allocPublicKey(it).ptr }
val combined = alloc<secp256k1_xonly_pubkey>()
val nKeyAggCache = keyaggCache?.let {
val n = alloc<secp256k1_musig_keyagg_cache>()
memcpy(n.ptr, toNat(it), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
n
}
secp256k1_musig_pubkey_agg(ctx, combined.ptr, nKeyAggCache?.ptr, nPubkeys.toCValues(), pubkeys.size.convert()).requireSuccess("secp256k1_musig_nonce_agg() failed")
val agg = serializeXonlyPubkey(combined)
keyaggCache?.let { blob -> nKeyAggCache?.let { memcpy(toNat(blob), it.ptr, Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong()) } }
return agg
}
}
override fun musigPubkeyTweakAdd(keyaggCache: ByteArray, tweak32: ByteArray): ByteArray {
require(keyaggCache.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
require(tweak32.size == 32)
memScoped {
val nKeyAggCache = alloc<secp256k1_musig_keyagg_cache>()
memcpy(nKeyAggCache.ptr, toNat(keyaggCache), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
val nPubkey = alloc<secp256k1_pubkey>()
secp256k1_musig_pubkey_ec_tweak_add(ctx, nPubkey.ptr, nKeyAggCache.ptr, toNat(tweak32)).requireSuccess("secp256k1_musig_pubkey_ec_tweak_add() failed")
memcpy(toNat(keyaggCache), nKeyAggCache.ptr, Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
return serializePubkey(nPubkey)
}
}
override fun musigPubkeyXonlyTweakAdd(keyaggCache: ByteArray, tweak32: ByteArray): ByteArray {
require(keyaggCache.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
require(tweak32.size == 32)
memScoped {
val nKeyAggCache = alloc<secp256k1_musig_keyagg_cache>()
memcpy(nKeyAggCache.ptr, toNat(keyaggCache), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
val nPubkey = alloc<secp256k1_pubkey>()
secp256k1_musig_pubkey_xonly_tweak_add(ctx, nPubkey.ptr, nKeyAggCache.ptr, toNat(tweak32)).requireSuccess("secp256k1_musig_pubkey_xonly_tweak_add() failed")
memcpy(toNat(keyaggCache), nKeyAggCache.ptr, Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
return serializePubkey(nPubkey)
}
}
override fun musigNonceProcess(aggnonce: ByteArray, msg32: ByteArray, keyaggCache: ByteArray): ByteArray {
require(aggnonce.size == Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
require(keyaggCache.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
require(msg32.size == 32)
memScoped {
val nKeyAggCache = alloc<secp256k1_musig_keyagg_cache>()
memcpy(nKeyAggCache.ptr, toNat(keyaggCache), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
val nSession = alloc<secp256k1_musig_session>()
val nAggnonce = alloc<secp256k1_musig_aggnonce>()
secp256k1_musig_aggnonce_parse(ctx, nAggnonce.ptr, toNat(aggnonce)).requireSuccess("secp256k1_musig_aggnonce_parse() failed")
secp256k1_musig_nonce_process(ctx, nSession.ptr, nAggnonce.ptr, toNat(msg32), nKeyAggCache.ptr).requireSuccess("secp256k1_musig_nonce_process() failed")
val session = ByteArray(Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE)
memcpy(toNat(session), nSession.ptr, Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE.toULong())
return session
}
}
override fun musigPartialSign(secnonce: ByteArray, privkey: ByteArray, keyaggCache: ByteArray, session: ByteArray): ByteArray {
require(secnonce.size == Secp256k1.MUSIG2_SECRET_NONCE_SIZE)
require(privkey.size == 32)
require(keyaggCache.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
require(session.size == Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE)
memScoped {
val nSecnonce = alloc<secp256k1_musig_secnonce>()
memcpy(nSecnonce.ptr, toNat(secnonce), Secp256k1.MUSIG2_SECRET_NONCE_SIZE.toULong())
val nKeypair = alloc<secp256k1_keypair>()
secp256k1_keypair_create(ctx, nKeypair.ptr, toNat(privkey))
val nPsig = alloc<secp256k1_musig_partial_sig>()
val nKeyAggCache = alloc<secp256k1_musig_keyagg_cache>()
memcpy(nKeyAggCache.ptr, toNat(keyaggCache), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
val nSession = alloc<secp256k1_musig_session>()
memcpy(nSession.ptr, toNat(session), Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE.toULong())
secp256k1_musig_partial_sign(ctx, nPsig.ptr, nSecnonce.ptr, nKeypair.ptr, nKeyAggCache.ptr, nSession.ptr).requireSuccess("secp256k1_musig_partial_sign failed")
val psig = ByteArray(32)
secp256k1_musig_partial_sig_serialize(ctx, toNat(psig), nPsig.ptr).requireSuccess("secp256k1_musig_partial_sig_serialize() failed")
return psig
}
}
override fun musigPartialSigVerify(psig: ByteArray, pubnonce: ByteArray, pubkey: ByteArray, keyaggCache: ByteArray, session: ByteArray): Int {
require(psig.size == 32)
require(pubnonce.size == Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
require(pubkey.size == 33 || pubkey.size == 65)
require(keyaggCache.size == Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
require(session.size == Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE)
memScoped {
val nPSig = allocPartialSig(psig)
val nPubnonce = allocPublicNonce(pubnonce)
val nPubkey = allocPublicKey(pubkey)
val nKeyAggCache = alloc<secp256k1_musig_keyagg_cache>()
memcpy(nKeyAggCache.ptr, toNat(keyaggCache), Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE.toULong())
val nSession = alloc<secp256k1_musig_session>()
memcpy(nSession.ptr, toNat(session), Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE.toULong())
return secp256k1_musig_partial_sig_verify(ctx, nPSig.ptr, nPubnonce.ptr, nPubkey.ptr, nKeyAggCache.ptr, nSession.ptr)
}
}
override fun musigPartialSigAgg(session: ByteArray, psigs: Array<ByteArray>): ByteArray {
require(session.size == Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE)
require(psigs.isNotEmpty())
psigs.forEach { require(it.size == 32) }
memScoped {
val nSession = alloc<secp256k1_musig_session>()
memcpy(nSession.ptr, toNat(session), Secp256k1.MUSIG2_PUBLIC_SESSION_SIZE.toULong())
val nPsigs = psigs.map { allocPartialSig(it).ptr }
val sig64 = ByteArray(64)
secp256k1_musig_partial_sig_agg(ctx, toNat(sig64), nSession.ptr, nPsigs.toCValues(), psigs.size.convert()).requireSuccess("secp256k1_musig_partial_sig_agg() failed")
return sig64
}
}
public override fun cleanup() {
secp256k1_context_destroy(ctx)
}
}
internal actual fun getSecpk256k1(): Secp256k1 = Secp256k1Native

28
tests/build.gradle.kts
View File

@ -1,3 +1,7 @@
import org.jetbrains.kotlin.gradle.targets.jvm.tasks.KotlinJvmTest
import org.jetbrains.kotlin.gradle.targets.native.tasks.KotlinNativeHostTest
import org.jetbrains.kotlin.gradle.targets.native.tasks.KotlinNativeSimulatorTest
plugins {
kotlin("multiplatform")
if (System.getProperty("includeAndroid")?.toBoolean() == true) {
@ -19,6 +23,8 @@ kotlin {
dependencies {
implementation(kotlin("test-common"))
implementation(kotlin("test-annotations-common"))
implementation("org.kodein.memory:klio-files:0.12.0")
api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
}
}
@ -79,3 +85,25 @@ if (includeAndroid) {
}
}
}
afterEvaluate {
tasks.withType<AbstractTestTask> {
testLogging {
events("passed", "skipped", "failed", "standard_out", "standard_error")
showExceptions = true
showStackTraces = true
}
}
tasks.withType<KotlinJvmTest> {
environment("TEST_RESOURCES_PATH", projectDir.resolve("src/commonTest/resources"))
}
tasks.withType<KotlinNativeHostTest> {
environment("TEST_RESOURCES_PATH", projectDir.resolve("src/commonTest/resources"))
}
tasks.withType<KotlinNativeSimulatorTest> {
environment("SIMCTL_CHILD_TEST_RESOURCES_PATH", projectDir.resolve("src/commonTest/resources"))
}
}

298
tests/src/commonTest/kotlin/fr/acinq/secp256k1/Musig2Test.kt Normal file
View File

@ -0,0 +1,298 @@
package fr.acinq.secp256k1
import kotlinx.serialization.json.*
import org.kodein.memory.file.FileSystem
import org.kodein.memory.file.Path
import org.kodein.memory.file.openReadableFile
import org.kodein.memory.file.resolve
import org.kodein.memory.system.Environment
import org.kodein.memory.text.readString
import org.kodein.memory.use
import kotlin.test.*
class Musig2Test {
fun resourcesDir() =
Environment.findVariable("TEST_RESOURCES_PATH")?.let { Path(it) }
?: FileSystem.workingDir().resolve("src/commonTest/resources")
fun readData(filename: String): JsonElement {
val file = resourcesDir().resolve(filename)
val raw = file.openReadableFile().use { it.readString() }
val format = Json { ignoreUnknownKeys = true }
return format.parseToJsonElement(raw)
}
@Test
fun `aggregate public keys`() {
val tests = readData("musig2/key_agg_vectors.json")
val pubkeys = tests.jsonObject["pubkeys"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val tweaks = tests.jsonObject["tweaks"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
tests.jsonObject["valid_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val expected = Hex.decode(it.jsonObject["expected"]!!.jsonPrimitive.content)
val keyAggCache = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
val aggkey = Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyAggCache)
assertContentEquals(expected, aggkey)
}
tests.jsonObject["error_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val tweakIndex = it.jsonObject["tweak_indices"]!!.jsonArray.map { it.jsonPrimitive.int }.firstOrNull()
val isXonly = it.jsonObject["is_xonly"]!!.jsonArray.map { it.jsonPrimitive.boolean }
when (tweakIndex) {
null -> {
// One of the public keys is invalid, so key aggregation will fail.
// Callers must verify that public keys are valid before aggregating them.
assertFails {
val keyAggCache = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyAggCache)
}
}
else -> {
// The tweak cannot be applied, it would result in an invalid public key.
assertFails {
val keyAggCache = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyAggCache)
if (isXonly[0])
Secp256k1.musigPubkeyXonlyTweakAdd(keyAggCache, tweaks[tweakIndex])
else
Secp256k1.musigPubkeyTweakAdd(keyAggCache, tweaks[tweakIndex])
}
}
}
}
}
/** Secret nonces in test vectors use a custom encoding. */
private fun deserializeSecretNonce(hex: String): ByteArray {
val serialized = Hex.decode(hex)
require(serialized.size == 97) { "secret nonce from test vector should be serialized using 97 bytes" }
// In test vectors, secret nonces are serialized as: <scalar_1> <scalar_2> <compressed_public_key>
val compressedPublicKey = serialized.takeLast(33).toByteArray()
// We expect secret nonces serialized as: <magic> <scalar_1> <scalar_2> <public_key_x> <public_key_y>
// Where we use a different endianness for the public key coordinates than the test vectors.
val uncompressedPublicKey = Secp256k1.pubkeyParse(compressedPublicKey)
val publicKeyX = uncompressedPublicKey.drop(1).take(32).reversed().toByteArray()
val publicKeyY = uncompressedPublicKey.takeLast(32).reversed().toByteArray()
val magic = Hex.decode("220EDCF1")
return magic + serialized.take(64) + publicKeyX + publicKeyY
}
@Test
fun `generate secret nonce`() {
val tests = readData("musig2/nonce_gen_vectors.json")
tests.jsonObject["test_cases"]!!.jsonArray.forEach {
val randprime = Hex.decode(it.jsonObject["rand_"]!!.jsonPrimitive.content)
val sk = it.jsonObject["sk"]?.jsonPrimitive?.contentOrNull?.let { Hex.decode(it) }
val pk = Hex.decode(it.jsonObject["pk"]!!.jsonPrimitive.content)
val keyagg = it.jsonObject["aggpk"]?.jsonPrimitive?.contentOrNull?.let {
// The test vectors directly provide an aggregated public key: we must manually create the corresponding
// key aggregation cache to correctly test.
val agg = ByteArray(1) { 2.toByte() } + Hex.decode(it)
val magic = Hex.decode("f4adbbdf")
magic + Secp256k1.pubkeyParse(agg).drop(1) + ByteArray(129) { 0x00 }
}
val msg = it.jsonObject["msg"]?.jsonPrimitive?.contentOrNull?.let { Hex.decode(it) }
val extraInput = it.jsonObject["extra_in"]?.jsonPrimitive?.contentOrNull?.let { Hex.decode(it) }
val expectedSecnonce = deserializeSecretNonce(it.jsonObject["expected_secnonce"]!!.jsonPrimitive.content)
val expectedPubnonce = Hex.decode(it.jsonObject["expected_pubnonce"]!!.jsonPrimitive.content)
// secp256k1 only supports signing 32-byte messages (when provided), which excludes some of the test vectors.
if (msg == null || msg.size == 32) {
val nonce = Secp256k1.musigNonceGen(randprime, sk, pk, msg, keyagg, extraInput)
val secnonce = nonce.copyOfRange(0, Secp256k1.MUSIG2_SECRET_NONCE_SIZE)
val pubnonce = nonce.copyOfRange(Secp256k1.MUSIG2_SECRET_NONCE_SIZE, Secp256k1.MUSIG2_SECRET_NONCE_SIZE + Secp256k1.MUSIG2_PUBLIC_NONCE_SIZE)
assertContentEquals(expectedPubnonce, pubnonce)
assertContentEquals(expectedSecnonce, secnonce)
}
}
}
@Test
fun `aggregate nonces`() {
val tests = readData("musig2/nonce_agg_vectors.json")
val nonces = tests.jsonObject["pnonces"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
tests.jsonObject["valid_test_cases"]!!.jsonArray.forEach {
val nonceIndices = it.jsonObject["pnonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val expected = Hex.decode(it.jsonObject["expected"]!!.jsonPrimitive.content)
val agg = Secp256k1.musigNonceAgg(nonceIndices.map { nonces[it] }.toTypedArray())
assertNotNull(agg)
assertContentEquals(expected, agg)
}
tests.jsonObject["error_test_cases"]!!.jsonArray.forEach {
val nonceIndices = it.jsonObject["pnonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
assertFails {
Secp256k1.musigNonceAgg(nonceIndices.map { nonces[it] }.toTypedArray())
}
}
}
@Test
fun sign() {
val tests = readData("musig2/sign_verify_vectors.json")
val sk = Hex.decode(tests.jsonObject["sk"]!!.jsonPrimitive.content)
val pubkeys = tests.jsonObject["pubkeys"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val secnonces = tests.jsonObject["secnonces"]!!.jsonArray.map { deserializeSecretNonce(it.jsonPrimitive.content) }
val pnonces = tests.jsonObject["pnonces"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val aggnonces = tests.jsonObject["aggnonces"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val msgs = tests.jsonObject["msgs"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
tests.jsonObject["valid_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val nonceIndices = it.jsonObject["nonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val expected = Hex.decode(it.jsonObject["expected"]!!.jsonPrimitive.content)
val signerIndex = it.jsonObject["signer_index"]!!.jsonPrimitive.int
val messageIndex = it.jsonObject["msg_index"]!!.jsonPrimitive.int
val aggnonce = Secp256k1.musigNonceAgg(nonceIndices.map { pnonces[it] }.toTypedArray())
assertNotNull(aggnonce)
assertContentEquals(aggnonces[it.jsonObject["aggnonce_index"]!!.jsonPrimitive.int], aggnonce)
val keyagg = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyagg)
// We only support signing 32-byte messages.
if (msgs[messageIndex].size == 32) {
val session = Secp256k1.musigNonceProcess(aggnonce, msgs[messageIndex], keyagg)
assertNotNull(session)
val psig = Secp256k1.musigPartialSign(secnonces[keyIndices[signerIndex]], sk, keyagg, session)
assertContentEquals(expected, psig)
assertEquals(1, Secp256k1.musigPartialSigVerify(psig, pnonces[nonceIndices[signerIndex]], pubkeys[keyIndices[signerIndex]], keyagg, session))
}
}
tests.jsonObject["verify_fail_test_cases"]!!.jsonArray.forEach {
val psig = Hex.decode(it.jsonObject["sig"]!!.jsonPrimitive.content)
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val nonceIndices = it.jsonObject["nonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val signerIndex = it.jsonObject["signer_index"]!!.jsonPrimitive.int
val messageIndex = it.jsonObject["msg_index"]!!.jsonPrimitive.int
if (msgs[messageIndex].size == 32) {
val aggnonce = Secp256k1.musigNonceAgg(nonceIndices.map { pnonces[it] }.toTypedArray())
assertNotNull(aggnonce)
val keyagg = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyagg)
val session = Secp256k1.musigNonceProcess(aggnonce, msgs[messageIndex], keyagg)
assertNotNull(session)
assertFails {
require(Secp256k1.musigPartialSigVerify(psig, pnonces[nonceIndices[signerIndex]], pubkeys[keyIndices[signerIndex]], keyagg, session) == 1)
}
}
}
}
@Test
fun `aggregate signatures`() {
val tests = readData("musig2/sig_agg_vectors.json")
val pubkeys = tests.jsonObject["pubkeys"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val pnonces = tests.jsonObject["pnonces"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val tweaks = tests.jsonObject["tweaks"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val psigs = tests.jsonObject["psigs"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val msg = Hex.decode(tests.jsonObject["msg"]!!.jsonPrimitive.content)
tests.jsonObject["valid_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val nonceIndices = it.jsonObject["nonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val psigIndices = it.jsonObject["psig_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val expected = Hex.decode(it.jsonObject["expected"]!!.jsonPrimitive.content)
val aggnonce = Secp256k1.musigNonceAgg(nonceIndices.map { pnonces[it] }.toTypedArray())
assertNotNull(aggnonce)
val tweakIndices = it.jsonObject["tweak_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val isXonly = it.jsonObject["is_xonly"]!!.jsonArray.map { it.jsonPrimitive.boolean }
assertContentEquals(Hex.decode(it.jsonObject["aggnonce"]!!.jsonPrimitive.content), aggnonce)
val keyagg = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyagg)
tweakIndices
.zip(isXonly)
.map { tweaks[it.first] to it.second }
.forEach {
if (it.second)
Secp256k1.musigPubkeyXonlyTweakAdd(keyagg, it.first)
else
Secp256k1.musigPubkeyTweakAdd(keyagg, it.first)
}
val session = Secp256k1.musigNonceProcess(aggnonce, msg, keyagg)
val aggsig = Secp256k1.musigPartialSigAgg(session, psigIndices.map { psigs[it] }.toTypedArray())
assertContentEquals(expected, aggsig)
}
tests.jsonObject["error_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val nonceIndices = it.jsonObject["nonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val psigIndices = it.jsonObject["psig_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val aggnonce = Secp256k1.musigNonceAgg(nonceIndices.map { pnonces[it] }.toTypedArray())
assertNotNull(aggnonce)
val tweakIndices = it.jsonObject["tweak_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val isXonly = it.jsonObject["is_xonly"]!!.jsonArray.map { it.jsonPrimitive.boolean }
assertContentEquals(Hex.decode(it.jsonObject["aggnonce"]!!.jsonPrimitive.content), aggnonce)
val keyagg = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyagg)
tweakIndices
.zip(isXonly)
.map { tweaks[it.first] to it.second }
.forEach {
if (it.second)
Secp256k1.musigPubkeyXonlyTweakAdd(keyagg, it.first)
else
Secp256k1.musigPubkeyTweakAdd(keyagg, it.first)
}
val session = Secp256k1.musigNonceProcess(aggnonce, msg, keyagg)
assertFails {
Secp256k1.musigPartialSigAgg(session, psigIndices.map { psigs[it] }.toTypedArray())
}
}
}
@Test
fun `tweak tests`() {
val tests = readData("musig2/tweak_vectors.json")
val sk = Hex.decode(tests.jsonObject["sk"]!!.jsonPrimitive.content)
val pubkeys = tests.jsonObject["pubkeys"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val pnonces = tests.jsonObject["pnonces"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val tweaks = tests.jsonObject["tweaks"]!!.jsonArray.map { Hex.decode(it.jsonPrimitive.content) }
val msg = Hex.decode(tests.jsonObject["msg"]!!.jsonPrimitive.content)
val secnonce = deserializeSecretNonce(tests.jsonObject["secnonce"]!!.jsonPrimitive.content)
val aggnonce = Hex.decode(tests.jsonObject["aggnonce"]!!.jsonPrimitive.content)
assertContentEquals(aggnonce, Secp256k1.musigNonceAgg(arrayOf(pnonces[0], pnonces[1], pnonces[2])))
tests.jsonObject["valid_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val nonceIndices = it.jsonObject["nonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val expected = Hex.decode(it.jsonObject["expected"]!!.jsonPrimitive.content)
assertContentEquals(aggnonce, Secp256k1.musigNonceAgg(nonceIndices.map { pnonces[it] }.toTypedArray()))
val tweakIndices = it.jsonObject["tweak_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val isXonly = it.jsonObject["is_xonly"]!!.jsonArray.map { it.jsonPrimitive.boolean }
val signerIndex = it.jsonObject["signer_index"]!!.jsonPrimitive.int
val keyagg = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyagg)
tweakIndices
.zip(isXonly)
.map { tweaks[it.first] to it.second }
.forEach {
if (it.second)
Secp256k1.musigPubkeyXonlyTweakAdd(keyagg, it.first)
else
Secp256k1.musigPubkeyTweakAdd(keyagg, it.first)
}
val session = Secp256k1.musigNonceProcess(aggnonce, msg, keyagg)
assertNotNull(session)
val psig = Secp256k1.musigPartialSign(secnonce, sk, keyagg, session)
assertContentEquals(expected, psig)
assertEquals(1, Secp256k1.musigPartialSigVerify(psig, pnonces[nonceIndices[signerIndex]], pubkeys[keyIndices[signerIndex]], keyagg, session))
}
tests.jsonObject["error_test_cases"]!!.jsonArray.forEach {
val keyIndices = it.jsonObject["key_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
val nonceIndices = it.jsonObject["nonce_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
assertContentEquals(aggnonce, Secp256k1.musigNonceAgg(nonceIndices.map { pnonces[it] }.toTypedArray()))
val tweakIndices = it.jsonObject["tweak_indices"]!!.jsonArray.map { it.jsonPrimitive.int }
assertEquals(1, tweakIndices.size)
val tweak = tweaks[tweakIndices.first()]
val isXonly = it.jsonObject["is_xonly"]!!.jsonArray.map { it.jsonPrimitive.boolean }.first()
val keyagg = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
Secp256k1.musigPubkeyAgg(keyIndices.map { pubkeys[it] }.toTypedArray(), keyagg)
assertFails {
if (isXonly)
Secp256k1.musigPubkeyXonlyTweakAdd(keyagg, tweak)
else
Secp256k1.musigPubkeyTweakAdd(keyagg, tweak)
}
}
}
}

138
tests/src/commonTest/kotlin/fr/acinq/secp256k1/Secp256k1Test.kt
View File

@ -352,6 +352,144 @@ class Secp256k1Test {
}
}
@Test
fun testMusig2GenerateNonce() {
val privkey = Hex.decode("0000000000000000000000000000000000000000000000000000000000000003")
val pubkey = Hex.decode("02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9")
val sessionId = Hex.decode("0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F")
val nonce = Secp256k1.musigNonceGen(sessionId, null, pubkey, null, null, null)
val pubnonce = Hex.encode(nonce.copyOfRange(132, 132 + 66)).uppercase()
assertEquals("02C96E7CB1E8AA5DAC64D872947914198F607D90ECDE5200DE52978AD5DED63C000299EC5117C2D29EDEE8A2092587C3909BE694D5CFF0667D6C02EA4059F7CD9786", pubnonce)
assertNotEquals(nonce, Secp256k1.musigNonceGen(sessionId, privkey, pubkey, null, null, null))
assertNotEquals(nonce, Secp256k1.musigNonceGen(sessionId, null, pubkey, sessionId, null, null))
}
@Test
fun testMusig2AggregateNonce() {
val nonces = listOf(
"020151C80F435648DF67A22B749CD798CE54E0321D034B92B709B567D60A42E66603BA47FBC1834437B3212E89A84D8425E7BF12E0245D98262268EBDCB385D50641",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60248C264CDD57D3C24D79990B0F865674EB62A0F9018277A95011B41BFC193B833",
"020151C80F435648DF67A22B749CD798CE54E0321D034B92B709B567D60A42E6660279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60379BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
// The following nonces are invalid.
"04FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60248C264CDD57D3C24D79990B0F865674EB62A0F9018277A95011B41BFC193B833",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60248C264CDD57D3C24D79990B0F865674EB62A0F9018277A95011B41BFC193B831",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A602FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30"
).map { Hex.decode(it) }
val agg1 = Secp256k1.musigNonceAgg(arrayOf(nonces[0], nonces[1]))
assertEquals("035FE1873B4F2967F52FEA4A06AD5A8ECCBE9D0FD73068012C894E2E87CCB5804B024725377345BDE0E9C33AF3C43C0A29A9249F2F2956FA8CFEB55C8573D0262DC8", Hex.encode(agg1).uppercase())
val agg2 = Secp256k1.musigNonceAgg(arrayOf(nonces[2], nonces[3]))
assertEquals("035FE1873B4F2967F52FEA4A06AD5A8ECCBE9D0FD73068012C894E2E87CCB5804B000000000000000000000000000000000000000000000000000000000000000000", Hex.encode(agg2).uppercase())
assertFails {
Secp256k1.musigNonceAgg(arrayOf(nonces[0], nonces[4]))
}
assertFails {
Secp256k1.musigNonceAgg(arrayOf(nonces[5], nonces[1]))
}
assertFails {
Secp256k1.musigNonceAgg(arrayOf(nonces[6], nonces[1]))
}
}
@Test
fun testMusig2AggregatePubkey() {
val pubkeys = listOf(
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"03DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659",
"023590A94E768F8E1815C2F24B4D80A8E3149316C3518CE7B7AD338368D038CA66",
"020000000000000000000000000000000000000000000000000000000000000005",
"02FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30",
"04F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"03935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9"
).map { Hex.decode(it) }
val agg1 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[1], pubkeys[2]), null)
assertEquals("90539EEDE565F5D054F32CC0C220126889ED1E5D193BAF15AEF344FE59D4610C", Hex.encode(agg1).uppercase())
// We provide an empty cache, which will be filled when aggregating public keys.
val keyaggCache = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
val agg2 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[1], pubkeys[2]), keyaggCache)
assertEquals("90539EEDE565F5D054F32CC0C220126889ED1E5D193BAF15AEF344FE59D4610C", Hex.encode(agg2).uppercase())
assertTrue(keyaggCache.count { it.toInt() != 0 } > 100) // the cache has been filled with key aggregation data
// We can reuse the key aggregation cache to speed up computation.
val agg3 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[1], pubkeys[2]), keyaggCache)
assertEquals("90539EEDE565F5D054F32CC0C220126889ED1E5D193BAF15AEF344FE59D4610C", Hex.encode(agg3).uppercase())
val agg4 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[2], pubkeys[1], pubkeys[0]), null)
assertEquals("6204DE8B083426DC6EAF9502D27024D53FC826BF7D2012148A0575435DF54B2B", Hex.encode(agg4).uppercase())
val agg5 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[0], pubkeys[0]), null)
assertEquals("B436E3BAD62B8CD409969A224731C193D051162D8C5AE8B109306127DA3AA935", Hex.encode(agg5).uppercase())
val agg6 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[0], pubkeys[1], pubkeys[1]), null)
assertEquals("69BC22BFA5D106306E48A20679DE1D7389386124D07571D0D872686028C26A3E", Hex.encode(agg6).uppercase())
// If we provide the key aggregation cache for a different session, it is ignored and overwritten.
val agg7 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[0], pubkeys[1], pubkeys[1]), keyaggCache)
assertEquals("69BC22BFA5D106306E48A20679DE1D7389386124D07571D0D872686028C26A3E", Hex.encode(agg7).uppercase())
// If we provide random data in the key aggregation cache, it is ignored and overwritten.
val agg8 = Secp256k1.musigPubkeyAgg(arrayOf(pubkeys[0], pubkeys[0], pubkeys[1], pubkeys[1]), Random.nextBytes(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE))
assertEquals("69BC22BFA5D106306E48A20679DE1D7389386124D07571D0D872686028C26A3E", Hex.encode(agg8).uppercase())
}
@Test
fun testMusig2TweakPubkeys() {
val pubkeys = listOf(
"031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f",
"024d4b6cd1361032ca9bd2aeb9d900aa4d45d9ead80ac9423374c451a7254d0766",
"02531fe6068134503d2723133227c867ac8fa6c83c537e9a44c3c5bdbdcb1fe337"
).map { Hex.decode(it) }.toTypedArray()
val cache = ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE)
val agg1 = Secp256k1.musigPubkeyAgg(pubkeys, cache)
assertEquals("b6d830642403fc82511aca5ff98a5e76fcef0f89bffc1aadbe78ee74cd5a5716", Hex.encode(agg1))
val agg2 = Secp256k1.musigPubkeyTweakAdd(cache, Hex.decode("7468697320636f756c64206265206120424950333220747765616b2e2e2e2e00"))
assertEquals("04791e4f22a21f19bd9798eceab92ad2ccc18f2d6660e91ae4c0709aaebf1aa9023701f468b0eddf8973495a5327f2169d9c6a50eb6a0f87c0fbee90a4067eb230", Hex.encode(agg2))
val agg3 = Secp256k1.musigPubkeyXonlyTweakAdd(cache, Hex.decode("7468697320636f756c64206265206120746170726f6f7420747765616b2e2e00"))
assertEquals("04537a081a8d32ff700ca86aaa77a423e9b8d1480938076b645c68ee39d263c93948026928799b2d942cb5851db397015b26b1759de1b9ab2c691ced64a2eef836", Hex.encode(agg3))
}
@Test
fun testMusig2SigningSession() {
val privkeys = listOf(
"0101010101010101010101010101010101010101010101010101010101010101",
"0202020202020202020202020202020202020202020202020202020202020202",
).map { Hex.decode(it) }.toTypedArray()
val pubkeys = privkeys.map { Secp256k1.pubkeyCreate(it) }
val sessionId = Hex.decode("0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F")
val nonces = pubkeys.map { Secp256k1.musigNonceGen(sessionId, null, it, null, null, null) }
val secnonces = nonces.map { it.copyOfRange(0, 132) }
val pubnonces = nonces.map { it.copyOfRange(132, 132 + 66) }
val aggnonce = Secp256k1.musigNonceAgg(pubnonces.toTypedArray())
val keyaggCaches = (0 until 2).map { ByteArray(Secp256k1.MUSIG2_PUBLIC_KEYAGG_CACHE_SIZE) }
val aggpubkey = Secp256k1.musigPubkeyAgg(pubkeys.toTypedArray(), keyaggCaches[0])
assertContentEquals(aggpubkey, Secp256k1.musigPubkeyAgg(pubkeys.toTypedArray(), keyaggCaches[1]))
assertContentEquals(keyaggCaches[0], keyaggCaches[1])
val msg32 = Hex.decode("0303030303030303030303030303030303030303030303030303030303030303")
val sessions = (0 until 2).map { Secp256k1.musigNonceProcess(aggnonce, msg32, keyaggCaches[it]) }
val psigs = (0 until 2).map {
val psig = Secp256k1.musigPartialSign(secnonces[it], privkeys[it], keyaggCaches[it], sessions[it])
assertEquals(1, Secp256k1.musigPartialSigVerify(psig, pubnonces[it], pubkeys[it], keyaggCaches[it], sessions[it]))
assertEquals(0, Secp256k1.musigPartialSigVerify(Random.nextBytes(32), pubnonces[it], pubkeys[it], keyaggCaches[it], sessions[it]))
psig
}
val sig = Secp256k1.musigPartialSigAgg(sessions[0], psigs.toTypedArray())
assertContentEquals(sig, Secp256k1.musigPartialSigAgg(sessions[1], psigs.toTypedArray()))
assertTrue(Secp256k1.verifySchnorr(sig, msg32, aggpubkey))
val invalidSig1 = Secp256k1.musigPartialSigAgg(sessions[0], arrayOf(psigs[0], psigs[0]))
assertFalse(Secp256k1.verifySchnorr(invalidSig1, msg32, aggpubkey))
val invalidSig2 = Secp256k1.musigPartialSigAgg(sessions[0], arrayOf(Random.nextBytes(32), Random.nextBytes(32)))
assertFalse(Secp256k1.verifySchnorr(invalidSig2, msg32, aggpubkey))
}
@Test
fun testInvalidArguments() {
assertFails {

144
tests/src/commonTest/resources/musig2/det_sign_vectors.json Normal file
View File

@ -0,0 +1,144 @@
{
"sk": "7FB9E0E687ADA1EEBF7ECFE2F21E73EBDB51A7D450948DFE8D76D7F2D1007671",
"pubkeys": [
"03935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9",
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"02DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659",
"020000000000000000000000000000000000000000000000000000000000000007"
],
"msgs": [
"F95466D086770E689964664219266FE5ED215C92AE20BAB5C9D79ADDDDF3C0CF",
"2626262626262626262626262626262626262626262626262626262626262626262626262626"
],
"valid_test_cases": [
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [0, 1, 2],
"tweaks": [],
"is_xonly": [],
"msg_index": 0,
"signer_index": 0,
"expected": [
"03D96275257C2FCCBB6EEB77BDDF51D3C88C26EE1626C6CDA8999B9D34F4BA13A60309BE2BF883C6ABE907FA822D9CA166D51A3DCC28910C57528F6983FC378B7843",
"41EA65093F71D084785B20DC26A887CD941C9597860A21660CBDB9CC2113CAD3"
]
},
{
"rand": null,
"aggothernonce": "0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [1, 0, 2],
"tweaks": [],
"is_xonly": [],
"msg_index": 0,
"signer_index": 1,
"expected": [
"028FBCCF5BB73A7B61B270BAD15C0F9475D577DD85C2157C9D38BEF1EC922B48770253BE3638C87369BC287E446B7F2C8CA5BEB9FFBD1EA082C62913982A65FC214D",
"AEAA31262637BFA88D5606679018A0FEEEC341F3107D1199857F6C81DE61B8DD"
]
},
{
"rand": "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
"aggothernonce": "0279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F817980279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
"key_indices": [1, 2, 0],
"tweaks": [],
"is_xonly": [],
"msg_index": 1,
"signer_index": 2,
"expected": [
"024FA8D774F0C8743FAA77AFB4D08EE5A013C2E8EEAD8A6F08A77DDD2D28266DB803050905E8C994477F3F2981861A2E3791EF558626E645FBF5AA131C5D6447C2C2",
"FEE28A56B8556B7632E42A84122C51A4861B1F2DEC7E81B632195E56A52E3E13"
],
"comment": "Message longer than 32 bytes"
},
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "032DE2662628C90B03F5E720284EB52FF7D71F4284F627B68A853D78C78E1FFE9303E4C5524E83FFE1493B9077CF1CA6BEB2090C93D930321071AD40B2F44E599046",
"key_indices": [0, 1, 2],
"tweaks": ["E8F791FF9225A2AF0102AFFF4A9A723D9612A682A25EBE79802B263CDFCD83BB"],
"is_xonly": [true],
"msg_index": 0,
"signer_index": 0,
"expected": [
"031E07C0D11A0134E55DB1FC16095ADCBD564236194374AA882BFB3C78273BF673039D0336E8CA6288C00BFC1F8B594563529C98661172B9BC1BE85C23A4CE1F616B",
"7B1246C5889E59CB0375FA395CC86AC42D5D7D59FD8EAB4FDF1DCAB2B2F006EA"
],
"comment": "Tweaked public key"
}
],
"error_test_cases": [
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [1, 0, 3],
"tweaks": [],
"is_xonly": [],
"msg_index": 0,
"signer_index": 1,
"error": {
"type": "invalid_contribution",
"signer": 2,
"contrib": "pubkey"
},
"comment": "Signer 2 provided an invalid public key"
},
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [1, 2],
"tweaks": [],
"is_xonly": [],
"msg_index": 0,
"signer_index": 1,
"error": {
"type": "value",
"message": "The signer's pubkey must be included in the list of pubkeys."
},
"comment": "The signers pubkey is not in the list of pubkeys"
},
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "0437C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [1, 2, 0],
"tweaks": [],
"is_xonly": [],
"msg_index": 0,
"signer_index": 2,
"error": {
"type": "invalid_contribution",
"signer": null,
"contrib": "aggothernonce"
},
"comment": "aggothernonce is invalid due wrong tag, 0x04, in the first half"
},
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "0000000000000000000000000000000000000000000000000000000000000000000287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [1, 2, 0],
"tweaks": [],
"is_xonly": [],
"msg_index": 0,
"signer_index": 2,
"error": {
"type": "invalid_contribution",
"signer": null,
"contrib": "aggothernonce"
},
"comment": "aggothernonce is invalid because first half corresponds to point at infinity"
},
{
"rand": "0000000000000000000000000000000000000000000000000000000000000000",
"aggothernonce": "0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"key_indices": [1, 2, 0],
"tweaks": ["FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"],
"is_xonly": [false],
"msg_index": 0,
"signer_index": 2,
"error": {
"type": "value",
"message": "The tweak must be less than n."
},
"comment": "Tweak is invalid because it exceeds group size"
}
]
}

88
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{
"pubkeys": [
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"03DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659",
"023590A94E768F8E1815C2F24B4D80A8E3149316C3518CE7B7AD338368D038CA66",
"020000000000000000000000000000000000000000000000000000000000000005",
"02FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30",
"04F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"03935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9"
],
"tweaks": [
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141",
"252E4BD67410A76CDF933D30EAA1608214037F1B105A013ECCD3C5C184A6110B"
],
"valid_test_cases": [
{
"key_indices": [0, 1, 2],
"expected": "90539EEDE565F5D054F32CC0C220126889ED1E5D193BAF15AEF344FE59D4610C"
},
{
"key_indices": [2, 1, 0],
"expected": "6204DE8B083426DC6EAF9502D27024D53FC826BF7D2012148A0575435DF54B2B"
},
{
"key_indices": [0, 0, 0],
"expected": "B436E3BAD62B8CD409969A224731C193D051162D8C5AE8B109306127DA3AA935"
},
{
"key_indices": [0, 0, 1, 1],
"expected": "69BC22BFA5D106306E48A20679DE1D7389386124D07571D0D872686028C26A3E"
}
],
"error_test_cases": [
{
"key_indices": [0, 3],
"tweak_indices": [],
"is_xonly": [],
"error": {
"type": "invalid_contribution",
"signer": 1,
"contrib": "pubkey"
},
"comment": "Invalid public key"
},
{
"key_indices": [0, 4],
"tweak_indices": [],
"is_xonly": [],
"error": {
"type": "invalid_contribution",
"signer": 1,
"contrib": "pubkey"
},
"comment": "Public key exceeds field size"
},
{
"key_indices": [5, 0],
"tweak_indices": [],
"is_xonly": [],
"error": {
"type": "invalid_contribution",
"signer": 0,
"contrib": "pubkey"
},
"comment": "First byte of public key is not 2 or 3"
},
{
"key_indices": [0, 1],
"tweak_indices": [0],
"is_xonly": [true],
"error": {
"type": "value",
"message": "The tweak must be less than n."
},
"comment": "Tweak is out of range"
},
{
"key_indices": [6],
"tweak_indices": [1],
"is_xonly": [false],
"error": {
"type": "value",
"message": "The result of tweaking cannot be infinity."
},
"comment": "Intermediate tweaking result is point at infinity"
}
]
}

18
tests/src/commonTest/resources/musig2/key_sort_vectors.json Normal file
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{
"pubkeys": [
"02DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8",
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"03DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659",
"023590A94E768F8E1815C2F24B4D80A8E3149316C3518CE7B7AD338368D038CA66",
"02DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EFF",
"02DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8"
],
"sorted_pubkeys": [
"023590A94E768F8E1815C2F24B4D80A8E3149316C3518CE7B7AD338368D038CA66",
"02DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8",
"02DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8",
"02DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EFF",
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"03DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659"
]
}

51
tests/src/commonTest/resources/musig2/nonce_agg_vectors.json Normal file
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{
"pnonces": [
"020151C80F435648DF67A22B749CD798CE54E0321D034B92B709B567D60A42E66603BA47FBC1834437B3212E89A84D8425E7BF12E0245D98262268EBDCB385D50641",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60248C264CDD57D3C24D79990B0F865674EB62A0F9018277A95011B41BFC193B833",
"020151C80F435648DF67A22B749CD798CE54E0321D034B92B709B567D60A42E6660279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60379BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
"04FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60248C264CDD57D3C24D79990B0F865674EB62A0F9018277A95011B41BFC193B833",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A60248C264CDD57D3C24D79990B0F865674EB62A0F9018277A95011B41BFC193B831",
"03FF406FFD8ADB9CD29877E4985014F66A59F6CD01C0E88CAA8E5F3166B1F676A602FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30"
],
"valid_test_cases": [
{
"pnonce_indices": [0, 1],
"expected": "035FE1873B4F2967F52FEA4A06AD5A8ECCBE9D0FD73068012C894E2E87CCB5804B024725377345BDE0E9C33AF3C43C0A29A9249F2F2956FA8CFEB55C8573D0262DC8"
},
{
"pnonce_indices": [2, 3],
"expected": "035FE1873B4F2967F52FEA4A06AD5A8ECCBE9D0FD73068012C894E2E87CCB5804B000000000000000000000000000000000000000000000000000000000000000000",
"comment": "Sum of second points encoded in the nonces is point at infinity which is serialized as 33 zero bytes"
}
],
"error_test_cases": [
{
"pnonce_indices": [0, 4],
"error": {
"type": "invalid_contribution",
"signer": 1,
"contrib": "pubnonce"
},
"comment": "Public nonce from signer 1 is invalid due wrong tag, 0x04, in the first half"
},
{
"pnonce_indices": [5, 1],
"error": {
"type": "invalid_contribution",
"signer": 0,
"contrib": "pubnonce"
},
"comment": "Public nonce from signer 0 is invalid because the second half does not correspond to an X coordinate"
},
{
"pnonce_indices": [6, 1],
"error": {
"type": "invalid_contribution",
"signer": 0,
"contrib": "pubnonce"
},
"comment": "Public nonce from signer 0 is invalid because second half exceeds field size"
}
]
}

44
tests/src/commonTest/resources/musig2/nonce_gen_vectors.json Normal file
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{
"test_cases": [
{
"rand_": "0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F",
"sk": "0202020202020202020202020202020202020202020202020202020202020202",
"pk": "024D4B6CD1361032CA9BD2AEB9D900AA4D45D9EAD80AC9423374C451A7254D0766",
"aggpk": "0707070707070707070707070707070707070707070707070707070707070707",
"msg": "0101010101010101010101010101010101010101010101010101010101010101",
"extra_in": "0808080808080808080808080808080808080808080808080808080808080808",
"expected_secnonce": "B114E502BEAA4E301DD08A50264172C84E41650E6CB726B410C0694D59EFFB6495B5CAF28D045B973D63E3C99A44B807BDE375FD6CB39E46DC4A511708D0E9D2024D4B6CD1361032CA9BD2AEB9D900AA4D45D9EAD80AC9423374C451A7254D0766",
"expected_pubnonce": "02F7BE7089E8376EB355272368766B17E88E7DB72047D05E56AA881EA52B3B35DF02C29C8046FDD0DED4C7E55869137200FBDBFE2EB654267B6D7013602CAED3115A"
},
{
"rand_": "0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F",
"sk": "0202020202020202020202020202020202020202020202020202020202020202",
"pk": "024D4B6CD1361032CA9BD2AEB9D900AA4D45D9EAD80AC9423374C451A7254D0766",
"aggpk": "0707070707070707070707070707070707070707070707070707070707070707",
"msg": "",
"extra_in": "0808080808080808080808080808080808080808080808080808080808080808",
"expected_secnonce": "E862B068500320088138468D47E0E6F147E01B6024244AE45EAC40ACE5929B9F0789E051170B9E705D0B9EB49049A323BBBBB206D8E05C19F46C6228742AA7A9024D4B6CD1361032CA9BD2AEB9D900AA4D45D9EAD80AC9423374C451A7254D0766",
"expected_pubnonce": "023034FA5E2679F01EE66E12225882A7A48CC66719B1B9D3B6C4DBD743EFEDA2C503F3FD6F01EB3A8E9CB315D73F1F3D287CAFBB44AB321153C6287F407600205109"
},
{
"rand_": "0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F",
"sk": "0202020202020202020202020202020202020202020202020202020202020202",
"pk": "024D4B6CD1361032CA9BD2AEB9D900AA4D45D9EAD80AC9423374C451A7254D0766",
"aggpk": "0707070707070707070707070707070707070707070707070707070707070707",
"msg": "2626262626262626262626262626262626262626262626262626262626262626262626262626",
"extra_in": "0808080808080808080808080808080808080808080808080808080808080808",
"expected_secnonce": "3221975ACBDEA6820EABF02A02B7F27D3A8EF68EE42787B88CBEFD9AA06AF3632EE85B1A61D8EF31126D4663A00DD96E9D1D4959E72D70FE5EBB6E7696EBA66F024D4B6CD1361032CA9BD2AEB9D900AA4D45D9EAD80AC9423374C451A7254D0766",
"expected_pubnonce": "02E5BBC21C69270F59BD634FCBFA281BE9D76601295345112C58954625BF23793A021307511C79F95D38ACACFF1B4DA98228B77E65AA216AD075E9673286EFB4EAF3"
},
{
"rand_": "0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F",
"sk": null,
"pk": "02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"aggpk": null,
"msg": null,
"extra_in": null,
"expected_secnonce": "89BDD787D0284E5E4D5FC572E49E316BAB7E21E3B1830DE37DFE80156FA41A6D0B17AE8D024C53679699A6FD7944D9C4A366B514BAF43088E0708B1023DD289702F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"expected_pubnonce": "02C96E7CB1E8AA5DAC64D872947914198F607D90ECDE5200DE52978AD5DED63C000299EC5117C2D29EDEE8A2092587C3909BE694D5CFF0667D6C02EA4059F7CD9786"
}
]
}

151
tests/src/commonTest/resources/musig2/sig_agg_vectors.json Normal file
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{
"pubkeys": [
"03935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9",
"02D2DC6F5DF7C56ACF38C7FA0AE7A759AE30E19B37359DFDE015872324C7EF6E05",
"03C7FB101D97FF930ACD0C6760852EF64E69083DE0B06AC6335724754BB4B0522C",
"02352433B21E7E05D3B452B81CAE566E06D2E003ECE16D1074AABA4289E0E3D581"
],
"pnonces": [
"036E5EE6E28824029FEA3E8A9DDD2C8483F5AF98F7177C3AF3CB6F47CAF8D94AE902DBA67E4A1F3680826172DA15AFB1A8CA85C7C5CC88900905C8DC8C328511B53E",
"03E4F798DA48A76EEC1C9CC5AB7A880FFBA201A5F064E627EC9CB0031D1D58FC5103E06180315C5A522B7EC7C08B69DCD721C313C940819296D0A7AB8E8795AC1F00",
"02C0068FD25523A31578B8077F24F78F5BD5F2422AFF47C1FADA0F36B3CEB6C7D202098A55D1736AA5FCC21CF0729CCE852575C06C081125144763C2C4C4A05C09B6",
"031F5C87DCFBFCF330DEE4311D85E8F1DEA01D87A6F1C14CDFC7E4F1D8C441CFA40277BF176E9F747C34F81B0D9F072B1B404A86F402C2D86CF9EA9E9C69876EA3B9",
"023F7042046E0397822C4144A17F8B63D78748696A46C3B9F0A901D296EC3406C302022B0B464292CF9751D699F10980AC764E6F671EFCA15069BBE62B0D1C62522A",
"02D97DDA5988461DF58C5897444F116A7C74E5711BF77A9446E27806563F3B6C47020CBAD9C363A7737F99FA06B6BE093CEAFF5397316C5AC46915C43767AE867C00"
],
"tweaks": [
"B511DA492182A91B0FFB9A98020D55F260AE86D7ECBD0399C7383D59A5F2AF7C",
"A815FE049EE3C5AAB66310477FBC8BCCCAC2F3395F59F921C364ACD78A2F48DC",
"75448A87274B056468B977BE06EB1E9F657577B7320B0A3376EA51FD420D18A8"
],
"psigs": [
"B15D2CD3C3D22B04DAE438CE653F6B4ECF042F42CFDED7C41B64AAF9B4AF53FB",
"6193D6AC61B354E9105BBDC8937A3454A6D705B6D57322A5A472A02CE99FCB64",
"9A87D3B79EC67228CB97878B76049B15DBD05B8158D17B5B9114D3C226887505",
"66F82EA90923689B855D36C6B7E032FB9970301481B99E01CDB4D6AC7C347A15",
"4F5AEE41510848A6447DCD1BBC78457EF69024944C87F40250D3EF2C25D33EFE",
"DDEF427BBB847CC027BEFF4EDB01038148917832253EBC355FC33F4A8E2FCCE4",
"97B890A26C981DA8102D3BC294159D171D72810FDF7C6A691DEF02F0F7AF3FDC",
"53FA9E08BA5243CBCB0D797C5EE83BC6728E539EB76C2D0BF0F971EE4E909971",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"
],
"msg": "599C67EA410D005B9DA90817CF03ED3B1C868E4DA4EDF00A5880B0082C237869",
"valid_test_cases": [
{
"aggnonce": "0341432722C5CD0268D829C702CF0D1CBCE57033EED201FD335191385227C3210C03D377F2D258B64AADC0E16F26462323D701D286046A2EA93365656AFD9875982B",
"nonce_indices": [
0,
1
],
"key_indices": [
0,
1
],
"tweak_indices": [],
"is_xonly": [],
"psig_indices": [
0,
1
],
"expected": "041DA22223CE65C92C9A0D6C2CAC828AAF1EEE56304FEC371DDF91EBB2B9EF0912F1038025857FEDEB3FF696F8B99FA4BB2C5812F6095A2E0004EC99CE18DE1E"
},
{
"aggnonce": "0224AFD36C902084058B51B5D36676BBA4DC97C775873768E58822F87FE437D792028CB15929099EEE2F5DAE404CD39357591BA32E9AF4E162B8D3E7CB5EFE31CB20",
"nonce_indices": [
0,
2
],
"key_indices": [
0,
2
],
"tweak_indices": [],
"is_xonly": [],
"psig_indices": [
2,
3
],
"expected": "1069B67EC3D2F3C7C08291ACCB17A9C9B8F2819A52EB5DF8726E17E7D6B52E9F01800260A7E9DAC450F4BE522DE4CE12BA91AEAF2B4279219EF74BE1D286ADD9"
},
{
"aggnonce": "0208C5C438C710F4F96A61E9FF3C37758814B8C3AE12BFEA0ED2C87FF6954FF186020B1816EA104B4FCA2D304D733E0E19CEAD51303FF6420BFD222335CAA402916D",
"nonce_indices": [
0,
3
],
"key_indices": [
0,
2
],
"tweak_indices": [
0
],
"is_xonly": [
false
],
"psig_indices": [
4,
5
],
"expected": "5C558E1DCADE86DA0B2F02626A512E30A22CF5255CAEA7EE32C38E9A71A0E9148BA6C0E6EC7683B64220F0298696F1B878CD47B107B81F7188812D593971E0CC"
},
{
"aggnonce": "02B5AD07AFCD99B6D92CB433FBD2A28FDEB98EAE2EB09B6014EF0F8197CD58403302E8616910F9293CF692C49F351DB86B25E352901F0E237BAFDA11F1C1CEF29FFD",
"nonce_indices": [
0,
4
],
"key_indices": [
0,
3
],
"tweak_indices": [
0,
1,
2
],
"is_xonly": [
true,
false,
true
],
"psig_indices": [
6,
7
],
"expected": "839B08820B681DBA8DAF4CC7B104E8F2638F9388F8D7A555DC17B6E6971D7426CE07BF6AB01F1DB50E4E33719295F4094572B79868E440FB3DEFD3FAC1DB589E"
}
],
"error_test_cases": [
{
"aggnonce": "02B5AD07AFCD99B6D92CB433FBD2A28FDEB98EAE2EB09B6014EF0F8197CD58403302E8616910F9293CF692C49F351DB86B25E352901F0E237BAFDA11F1C1CEF29FFD",
"nonce_indices": [
0,
4
],
"key_indices": [
0,
3
],
"tweak_indices": [
0,
1,
2
],
"is_xonly": [
true,
false,
true
],
"psig_indices": [
7,
8
],
"error": {
"type": "invalid_contribution",
"signer": 1
},
"comment": "Partial signature is invalid because it exceeds group size"
}
]
}

212
tests/src/commonTest/resources/musig2/sign_verify_vectors.json Normal file
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@ -0,0 +1,212 @@
{
"sk": "7FB9E0E687ADA1EEBF7ECFE2F21E73EBDB51A7D450948DFE8D76D7F2D1007671",
"pubkeys": [
"03935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9",
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"02DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA661",
"020000000000000000000000000000000000000000000000000000000000000007"
],
"secnonces": [
"508B81A611F100A6B2B6B29656590898AF488BCF2E1F55CF22E5CFB84421FE61FA27FD49B1D50085B481285E1CA205D55C82CC1B31FF5CD54A489829355901F703935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9",
"0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9"
],
"pnonces": [
"0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"0279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F817980279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
"032DE2662628C90B03F5E720284EB52FF7D71F4284F627B68A853D78C78E1FFE9303E4C5524E83FFE1493B9077CF1CA6BEB2090C93D930321071AD40B2F44E599046",
"0237C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0387BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"0200000000000000000000000000000000000000000000000000000000000000090287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480"
],
"aggnonces": [
"028465FCF0BBDBCF443AABCCE533D42B4B5A10966AC09A49655E8C42DAAB8FCD61037496A3CC86926D452CAFCFD55D25972CA1675D549310DE296BFF42F72EEEA8C9",
"000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"048465FCF0BBDBCF443AABCCE533D42B4B5A10966AC09A49655E8C42DAAB8FCD61037496A3CC86926D452CAFCFD55D25972CA1675D549310DE296BFF42F72EEEA8C9",
"028465FCF0BBDBCF443AABCCE533D42B4B5A10966AC09A49655E8C42DAAB8FCD61020000000000000000000000000000000000000000000000000000000000000009",
"028465FCF0BBDBCF443AABCCE533D42B4B5A10966AC09A49655E8C42DAAB8FCD6102FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30"
],
"msgs": [
"F95466D086770E689964664219266FE5ED215C92AE20BAB5C9D79ADDDDF3C0CF",
"",
"2626262626262626262626262626262626262626262626262626262626262626262626262626"
],
"valid_test_cases": [
{
"key_indices": [0, 1, 2],
"nonce_indices": [0, 1, 2],
"aggnonce_index": 0,
"msg_index": 0,
"signer_index": 0,
"expected": "012ABBCB52B3016AC03AD82395A1A415C48B93DEF78718E62A7A90052FE224FB"
},
{
"key_indices": [1, 0, 2],
"nonce_indices": [1, 0, 2],
"aggnonce_index": 0,
"msg_index": 0,
"signer_index": 1,
"expected": "9FF2F7AAA856150CC8819254218D3ADEEB0535269051897724F9DB3789513A52"
},
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"aggnonce_index": 0,
"msg_index": 0,
"signer_index": 2,
"expected": "FA23C359F6FAC4E7796BB93BC9F0532A95468C539BA20FF86D7C76ED92227900"
},
{
"key_indices": [0, 1],
"nonce_indices": [0, 3],
"aggnonce_index": 1,
"msg_index": 0,
"signer_index": 0,
"expected": "AE386064B26105404798F75DE2EB9AF5EDA5387B064B83D049CB7C5E08879531",
"comment": "Both halves of aggregate nonce correspond to point at infinity"
},
{
"key_indices": [0, 1, 2],
"nonce_indices": [0, 1, 2],
"aggnonce_index": 0,
"msg_index": 1,
"signer_index": 0,
"expected": "D7D63FFD644CCDA4E62BC2BC0B1D02DD32A1DC3030E155195810231D1037D82D",
"comment": "Empty message"
},
{
"key_indices": [0, 1, 2],
"nonce_indices": [0, 1, 2],
"aggnonce_index": 0,
"msg_index": 2,
"signer_index": 0,
"expected": "E184351828DA5094A97C79CABDAAA0BFB87608C32E8829A4DF5340A6F243B78C",
"comment": "38-byte message"
}
],
"sign_error_test_cases": [
{
"key_indices": [1, 2],
"aggnonce_index": 0,
"msg_index": 0,
"secnonce_index": 0,
"error": {
"type": "value",
"message": "The signer's pubkey must be included in the list of pubkeys."
},
"comment": "The signers pubkey is not in the list of pubkeys. This test case is optional: it can be skipped by implementations that do not check that the signer's pubkey is included in the list of pubkeys."
},
{
"key_indices": [1, 0, 3],
"aggnonce_index": 0,
"msg_index": 0,
"secnonce_index": 0,
"error": {
"type": "invalid_contribution",
"signer": 2,
"contrib": "pubkey"
},
"comment": "Signer 2 provided an invalid public key"
},
{
"key_indices": [1, 2, 0],
"aggnonce_index": 2,
"msg_index": 0,
"secnonce_index": 0,
"error": {
"type": "invalid_contribution",
"signer": null,
"contrib": "aggnonce"
},
"comment": "Aggregate nonce is invalid due wrong tag, 0x04, in the first half"
},
{
"key_indices": [1, 2, 0],
"aggnonce_index": 3,
"msg_index": 0,
"secnonce_index": 0,
"error": {
"type": "invalid_contribution",
"signer": null,
"contrib": "aggnonce"
},
"comment": "Aggregate nonce is invalid because the second half does not correspond to an X coordinate"
},
{
"key_indices": [1, 2, 0],
"aggnonce_index": 4,
"msg_index": 0,
"secnonce_index": 0,
"error": {
"type": "invalid_contribution",
"signer": null,
"contrib": "aggnonce"
},
"comment": "Aggregate nonce is invalid because second half exceeds field size"
},
{
"key_indices": [0, 1, 2],
"aggnonce_index": 0,
"msg_index": 0,
"signer_index": 0,
"secnonce_index": 1,
"error": {
"type": "value",
"message": "first secnonce value is out of range."
},
"comment": "Secnonce is invalid which may indicate nonce reuse"
}
],
"verify_fail_test_cases": [
{
"sig": "97AC833ADCB1AFA42EBF9E0725616F3C9A0D5B614F6FE283CEAAA37A8FFAF406",
"key_indices": [0, 1, 2],
"nonce_indices": [0, 1, 2],
"msg_index": 0,
"signer_index": 0,
"comment": "Wrong signature (which is equal to the negation of valid signature)"
},
{
"sig": "68537CC5234E505BD14061F8DA9E90C220A181855FD8BDB7F127BB12403B4D3B",
"key_indices": [0, 1, 2],
"nonce_indices": [0, 1, 2],
"msg_index": 0,
"signer_index": 1,
"comment": "Wrong signer"
},
{
"sig": "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141",
"key_indices": [0, 1, 2],
"nonce_indices": [0, 1, 2],
"msg_index": 0,
"signer_index": 0,
"comment": "Signature exceeds group size"
}
],
"verify_error_test_cases": [
{
"sig": "68537CC5234E505BD14061F8DA9E90C220A181855FD8BDB7F127BB12403B4D3B",
"key_indices": [0, 1, 2],
"nonce_indices": [4, 1, 2],
"msg_index": 0,
"signer_index": 0,
"error": {
"type": "invalid_contribution",
"signer": 0,
"contrib": "pubnonce"
},
"comment": "Invalid pubnonce"
},
{
"sig": "68537CC5234E505BD14061F8DA9E90C220A181855FD8BDB7F127BB12403B4D3B",
"key_indices": [3, 1, 2],
"nonce_indices": [0, 1, 2],
"msg_index": 0,
"signer_index": 0,
"error": {
"type": "invalid_contribution",
"signer": 0,
"contrib": "pubkey"
},
"comment": "Invalid pubkey"
}
]
}

84
tests/src/commonTest/resources/musig2/tweak_vectors.json Normal file
View File

@ -0,0 +1,84 @@
{
"sk": "7FB9E0E687ADA1EEBF7ECFE2F21E73EBDB51A7D450948DFE8D76D7F2D1007671",
"pubkeys": [
"03935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9",
"02F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9",
"02DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659"
],
"secnonce": "508B81A611F100A6B2B6B29656590898AF488BCF2E1F55CF22E5CFB84421FE61FA27FD49B1D50085B481285E1CA205D55C82CC1B31FF5CD54A489829355901F703935F972DA013F80AE011890FA89B67A27B7BE6CCB24D3274D18B2D4067F261A9",
"pnonces": [
"0337C87821AFD50A8644D820A8F3E02E499C931865C2360FB43D0A0D20DAFE07EA0287BF891D2A6DEAEBADC909352AA9405D1428C15F4B75F04DAE642A95C2548480",
"0279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F817980279BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798",
"032DE2662628C90B03F5E720284EB52FF7D71F4284F627B68A853D78C78E1FFE9303E4C5524E83FFE1493B9077CF1CA6BEB2090C93D930321071AD40B2F44E599046"
],
"aggnonce": "028465FCF0BBDBCF443AABCCE533D42B4B5A10966AC09A49655E8C42DAAB8FCD61037496A3CC86926D452CAFCFD55D25972CA1675D549310DE296BFF42F72EEEA8C9",
"tweaks": [
"E8F791FF9225A2AF0102AFFF4A9A723D9612A682A25EBE79802B263CDFCD83BB",
"AE2EA797CC0FE72AC5B97B97F3C6957D7E4199A167A58EB08BCAFFDA70AC0455",
"F52ECBC565B3D8BEA2DFD5B75A4F457E54369809322E4120831626F290FA87E0",
"1969AD73CC177FA0B4FCED6DF1F7BF9907E665FDE9BA196A74FED0A3CF5AEF9D",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"
],
"msg": "F95466D086770E689964664219266FE5ED215C92AE20BAB5C9D79ADDDDF3C0CF",
"valid_test_cases": [
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"tweak_indices": [0],
"is_xonly": [true],
"signer_index": 2,
"expected": "E28A5C66E61E178C2BA19DB77B6CF9F7E2F0F56C17918CD13135E60CC848FE91",
"comment": "A single x-only tweak"
},
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"tweak_indices": [0],
"is_xonly": [false],
"signer_index": 2,
"expected": "38B0767798252F21BF5702C48028B095428320F73A4B14DB1E25DE58543D2D2D",
"comment": "A single plain tweak"
},
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"tweak_indices": [0, 1],
"is_xonly": [false, true],
"signer_index": 2,
"expected": "408A0A21C4A0F5DACAF9646AD6EB6FECD7F7A11F03ED1F48DFFF2185BC2C2408",
"comment": "A plain tweak followed by an x-only tweak"
},
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"tweak_indices": [0, 1, 2, 3],
"is_xonly": [false, false, true, true],
"signer_index": 2,
"expected": "45ABD206E61E3DF2EC9E264A6FEC8292141A633C28586388235541F9ADE75435",
"comment": "Four tweaks: plain, plain, x-only, x-only."
},
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"tweak_indices": [0, 1, 2, 3],
"is_xonly": [true, false, true, false],
"signer_index": 2,
"expected": "B255FDCAC27B40C7CE7848E2D3B7BF5EA0ED756DA81565AC804CCCA3E1D5D239",
"comment": "Four tweaks: x-only, plain, x-only, plain. If an implementation prohibits applying plain tweaks after x-only tweaks, it can skip this test vector or return an error."
}
],
"error_test_cases": [
{
"key_indices": [1, 2, 0],
"nonce_indices": [1, 2, 0],
"tweak_indices": [4],
"is_xonly": [false],
"signer_index": 2,
"error": {
"type": "value",
"message": "The tweak must be less than n."
},
"comment": "Tweak is invalid because it exceeds group size"
}
]
}