316 lines
11 KiB
C
316 lines
11 KiB
C
/***********************************************************************
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* Copyright (c) 2020 Gregory Maxwell *
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* Distributed under the MIT software license, see the accompanying *
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* file COPYING or https://www.opensource.org/licenses/mit-license.php.*
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***********************************************************************/
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#include <valgrind/memcheck.h>
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#include <stdio.h>
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#include <string.h>
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#include "../include/secp256k1.h"
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#include "assumptions.h"
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#include "util.h"
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#ifdef ENABLE_MODULE_ECDH
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# include "../include/secp256k1_ecdh.h"
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#endif
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#ifdef ENABLE_MODULE_RECOVERY
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# include "../include/secp256k1_recovery.h"
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#endif
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#ifdef ENABLE_MODULE_EXTRAKEYS
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# include "../include/secp256k1_extrakeys.h"
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#endif
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#ifdef ENABLE_MODULE_SCHNORRSIG
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#include "../include/secp256k1_schnorrsig.h"
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#endif
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#ifdef ENABLE_MODULE_ECDSA_S2C
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#include "include/secp256k1_ecdsa_s2c.h"
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#endif
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#ifdef ENABLE_MODULE_ECDSA_ADAPTOR
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#include "include/secp256k1_ecdsa_adaptor.h"
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#endif
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#ifdef ENABLE_MODULE_MUSIG
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#include "include/secp256k1_musig.h"
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#endif
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void run_tests(secp256k1_context *ctx, unsigned char *key);
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int main(void) {
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secp256k1_context* ctx;
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unsigned char key[32];
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int ret, i;
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if (!RUNNING_ON_VALGRIND) {
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fprintf(stderr, "This test can only usefully be run inside valgrind.\n");
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fprintf(stderr, "Usage: libtool --mode=execute valgrind ./valgrind_ctime_test\n");
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return 1;
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}
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ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN
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| SECP256K1_CONTEXT_VERIFY
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| SECP256K1_CONTEXT_DECLASSIFY);
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/** In theory, testing with a single secret input should be sufficient:
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* If control flow depended on secrets the tool would generate an error.
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*/
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for (i = 0; i < 32; i++) {
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key[i] = i + 65;
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}
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run_tests(ctx, key);
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/* Test context randomisation. Do this last because it leaves the context
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* tainted. */
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_context_randomize(ctx, key);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret);
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secp256k1_context_destroy(ctx);
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return 0;
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}
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void run_tests(secp256k1_context *ctx, unsigned char *key) {
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secp256k1_ecdsa_signature signature;
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secp256k1_pubkey pubkey;
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size_t siglen = 74;
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size_t outputlen = 33;
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int i;
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int ret;
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unsigned char msg[32];
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unsigned char sig[74];
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unsigned char spubkey[33];
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#ifdef ENABLE_MODULE_RECOVERY
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secp256k1_ecdsa_recoverable_signature recoverable_signature;
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int recid;
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#endif
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#ifdef ENABLE_MODULE_EXTRAKEYS
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secp256k1_keypair keypair;
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#endif
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for (i = 0; i < 32; i++) {
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msg[i] = i + 1;
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}
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/* Test keygen. */
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ec_pubkey_create(ctx, &pubkey, key);
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VALGRIND_MAKE_MEM_DEFINED(&pubkey, sizeof(secp256k1_pubkey));
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret);
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CHECK(secp256k1_ec_pubkey_serialize(ctx, spubkey, &outputlen, &pubkey, SECP256K1_EC_COMPRESSED) == 1);
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/* Test signing. */
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ecdsa_sign(ctx, &signature, msg, key, NULL, NULL);
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VALGRIND_MAKE_MEM_DEFINED(&signature, sizeof(secp256k1_ecdsa_signature));
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret);
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CHECK(secp256k1_ecdsa_signature_serialize_der(ctx, sig, &siglen, &signature));
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#ifdef ENABLE_MODULE_ECDH
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/* Test ECDH. */
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ecdh(ctx, msg, &pubkey, key, NULL, NULL);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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#endif
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#ifdef ENABLE_MODULE_RECOVERY
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/* Test signing a recoverable signature. */
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ecdsa_sign_recoverable(ctx, &recoverable_signature, msg, key, NULL, NULL);
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VALGRIND_MAKE_MEM_DEFINED(&recoverable_signature, sizeof(recoverable_signature));
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret);
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CHECK(secp256k1_ecdsa_recoverable_signature_serialize_compact(ctx, sig, &recid, &recoverable_signature));
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CHECK(recid >= 0 && recid <= 3);
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#endif
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ec_seckey_verify(ctx, key);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ec_seckey_negate(ctx, key);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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VALGRIND_MAKE_MEM_UNDEFINED(msg, 32);
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ret = secp256k1_ec_seckey_tweak_add(ctx, key, msg);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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VALGRIND_MAKE_MEM_UNDEFINED(msg, 32);
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ret = secp256k1_ec_seckey_tweak_mul(ctx, key, msg);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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/* Test keypair_create and keypair_xonly_tweak_add. */
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#ifdef ENABLE_MODULE_EXTRAKEYS
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_keypair_create(ctx, &keypair, key);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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/* The tweak is not treated as a secret in keypair_tweak_add */
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VALGRIND_MAKE_MEM_DEFINED(msg, 32);
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ret = secp256k1_keypair_xonly_tweak_add(ctx, &keypair, msg);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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VALGRIND_MAKE_MEM_UNDEFINED(&keypair, sizeof(keypair));
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ret = secp256k1_keypair_sec(ctx, key, &keypair);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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#endif
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#ifdef ENABLE_MODULE_SCHNORRSIG
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_keypair_create(ctx, &keypair, key);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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ret = secp256k1_schnorrsig_sign32(ctx, sig, msg, &keypair, NULL);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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#endif
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#ifdef ENABLE_MODULE_ECDSA_S2C
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{
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unsigned char s2c_data[32] = {0};
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unsigned char s2c_data_comm[32] = {0};
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secp256k1_ecdsa_s2c_opening s2c_opening;
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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VALGRIND_MAKE_MEM_UNDEFINED(s2c_data, 32);
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ret = secp256k1_ecdsa_s2c_sign(ctx, &signature, &s2c_opening, msg, key, s2c_data);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(s2c_data, 32);
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ret = secp256k1_ecdsa_anti_exfil_host_commit(ctx, s2c_data_comm, s2c_data);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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VALGRIND_MAKE_MEM_UNDEFINED(s2c_data, 32);
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ret = secp256k1_ecdsa_anti_exfil_signer_commit(ctx, &s2c_opening, msg, key, s2c_data);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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}
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#endif
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#ifdef ENABLE_MODULE_ECDSA_ADAPTOR
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{
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unsigned char adaptor_sig[162];
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unsigned char deckey[32];
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unsigned char expected_deckey[32];
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secp256k1_pubkey enckey;
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for (i = 0; i < 32; i++) {
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deckey[i] = i + 2;
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}
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ret = secp256k1_ec_pubkey_create(ctx, &enckey, deckey);
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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ret = secp256k1_ecdsa_adaptor_encrypt(ctx, adaptor_sig, key, &enckey, msg, NULL, NULL);
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VALGRIND_MAKE_MEM_DEFINED(adaptor_sig, sizeof(adaptor_sig));
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(deckey, 32);
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ret = secp256k1_ecdsa_adaptor_decrypt(ctx, &signature, deckey, adaptor_sig);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_UNDEFINED(&signature, 32);
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ret = secp256k1_ecdsa_adaptor_recover(ctx, expected_deckey, &signature, adaptor_sig, &enckey);
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VALGRIND_MAKE_MEM_DEFINED(expected_deckey, sizeof(expected_deckey));
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_DEFINED(deckey, sizeof(deckey));
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ret = secp256k1_memcmp_var(deckey, expected_deckey, sizeof(expected_deckey));
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 0);
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}
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#endif
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#ifdef ENABLE_MODULE_MUSIG
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{
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secp256k1_xonly_pubkey pk;
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const secp256k1_xonly_pubkey *pk_ptr[1];
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secp256k1_xonly_pubkey agg_pk;
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unsigned char session_id[32];
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secp256k1_musig_secnonce secnonce;
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secp256k1_musig_pubnonce pubnonce;
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const secp256k1_musig_pubnonce *pubnonce_ptr[1];
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secp256k1_musig_aggnonce aggnonce;
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secp256k1_musig_keyagg_cache cache;
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secp256k1_musig_session session;
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secp256k1_musig_partial_sig partial_sig;
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const secp256k1_musig_partial_sig *partial_sig_ptr[1];
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unsigned char extra_input[32];
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unsigned char sec_adaptor[32];
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secp256k1_pubkey adaptor;
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unsigned char pre_sig[64];
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int nonce_parity;
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pk_ptr[0] = &pk;
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pubnonce_ptr[0] = &pubnonce;
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VALGRIND_MAKE_MEM_DEFINED(key, 32);
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memcpy(session_id, key, sizeof(session_id));
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session_id[0] = session_id[0] + 1;
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memcpy(extra_input, key, sizeof(extra_input));
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extra_input[0] = extra_input[0] + 2;
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memcpy(sec_adaptor, key, sizeof(sec_adaptor));
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sec_adaptor[0] = extra_input[0] + 3;
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partial_sig_ptr[0] = &partial_sig;
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CHECK(secp256k1_keypair_create(ctx, &keypair, key));
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CHECK(secp256k1_keypair_xonly_pub(ctx, &pk, NULL, &keypair));
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CHECK(secp256k1_musig_pubkey_agg(ctx, NULL, &agg_pk, &cache, pk_ptr, 1));
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CHECK(secp256k1_ec_pubkey_create(ctx, &adaptor, sec_adaptor));
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VALGRIND_MAKE_MEM_UNDEFINED(key, 32);
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VALGRIND_MAKE_MEM_UNDEFINED(session_id, sizeof(session_id));
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VALGRIND_MAKE_MEM_UNDEFINED(extra_input, sizeof(extra_input));
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VALGRIND_MAKE_MEM_UNDEFINED(sec_adaptor, sizeof(sec_adaptor));
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ret = secp256k1_musig_nonce_gen(ctx, &secnonce, &pubnonce, session_id, key, msg, &cache, extra_input);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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CHECK(secp256k1_musig_nonce_agg(ctx, &aggnonce, pubnonce_ptr, 1));
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CHECK(secp256k1_musig_nonce_process(ctx, &session, &aggnonce, msg, &cache, &adaptor) == 1);
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ret = secp256k1_keypair_create(ctx, &keypair, key);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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ret = secp256k1_musig_partial_sign(ctx, &partial_sig, &secnonce, &keypair, &cache, &session);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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VALGRIND_MAKE_MEM_DEFINED(&partial_sig, sizeof(partial_sig));
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CHECK(secp256k1_musig_partial_sig_agg(ctx, pre_sig, &session, partial_sig_ptr, 1));
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VALGRIND_MAKE_MEM_DEFINED(pre_sig, sizeof(pre_sig));
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CHECK(secp256k1_musig_nonce_parity(ctx, &nonce_parity, &session));
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ret = secp256k1_musig_adapt(ctx, sig, pre_sig, sec_adaptor, nonce_parity);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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ret = secp256k1_musig_extract_adaptor(ctx, sec_adaptor, sig, pre_sig, nonce_parity);
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VALGRIND_MAKE_MEM_DEFINED(&ret, sizeof(ret));
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CHECK(ret == 1);
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}
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#endif
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}
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