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Export Schnorr signature API (#32)

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Implement Schnorr signatures (BIP 340)
This commit is contained in:
Fabrice Drouin
2021-11-23 17:38:46 +01:00
committed by GitHub
parent 5ee01ea526
commit ac7d4983d5
11 changed files with 232 additions and 6 deletions
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4
jni/src/main/java/fr/acinq/secp256k1/Secp256k1CFunctions.java
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@@ -64,4 +64,8 @@ public class Secp256k1CFunctions {
public static native byte[] secp256k1_ecdsa_recover(long ctx, byte[] sig, byte[] msg32, int recid);
public static native byte[] secp256k1_compact_to_der(long ctx, byte[] sig);
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);
}

8
jni/src/main/kotlin/fr/acinq/secp256k1/NativeSecp256k1.kt
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@@ -84,6 +84,14 @@ public object NativeSecp256k1 : Secp256k1 {
return Secp256k1CFunctions.secp256k1_compact_to_der(Secp256k1Context.getContext(), sig)
}
override fun verifySchnorr(signature: ByteArray, data: ByteArray, pub: ByteArray): Boolean {
return Secp256k1CFunctions.secp256k1_schnorrsig_verify(Secp256k1Context.getContext(), signature, data, pub) == 1
}
override fun signSchnorr(data: ByteArray, sec: ByteArray, auxrand32: ByteArray?): ByteArray {
return Secp256k1CFunctions.secp256k1_schnorrsig_sign(Secp256k1Context.getContext(), data, sec, auxrand32)
}
override fun cleanup() {
return Secp256k1CFunctions.secp256k1_context_destroy(Secp256k1Context.getContext())
}