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tests_impl.h
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tests_impl.h
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/***********************************************************************
* Copyright (c) 2018-2020 Andrew Poelstra, Jonas Nick *
* Distributed under the MIT software license, see the accompanying *
* file COPYING or https://www.opensource.org/licenses/mit-license.php.*
***********************************************************************/
#ifndef SECP256K1_MODULE_SCHNORRSIG_TESTS_H
#define SECP256K1_MODULE_SCHNORRSIG_TESTS_H
#include "../../../include/secp256k1_schnorrsig.h"
/* Checks that a bit flip in the n_flip-th argument (that has n_bytes many
* bytes) changes the hash function
*/
static void nonce_function_bip340_bitflip(unsigned char **args, size_t n_flip, size_t n_bytes, size_t msglen, size_t algolen) {
unsigned char nonces[2][32];
CHECK(nonce_function_bip340(nonces[0], args[0], msglen, args[1], args[2], args[3], algolen, args[4]) == 1);
secp256k1_testrand_flip(args[n_flip], n_bytes);
CHECK(nonce_function_bip340(nonces[1], args[0], msglen, args[1], args[2], args[3], algolen, args[4]) == 1);
CHECK(secp256k1_memcmp_var(nonces[0], nonces[1], 32) != 0);
}
/* Tests for the equality of two sha256 structs. This function only produces a
* correct result if an integer multiple of 64 many bytes have been written
* into the hash functions. */
static void test_sha256_eq(const secp256k1_sha256 *sha1, const secp256k1_sha256 *sha2) {
/* Is buffer fully consumed? */
CHECK((sha1->bytes & 0x3F) == 0);
CHECK(sha1->bytes == sha2->bytes);
CHECK(secp256k1_memcmp_var(sha1->s, sha2->s, sizeof(sha1->s)) == 0);
}
static void run_nonce_function_bip340_tests(void) {
unsigned char tag[13] = "BIP0340/nonce";
unsigned char aux_tag[11] = "BIP0340/aux";
unsigned char algo[13] = "BIP0340/nonce";
size_t algolen = sizeof(algo);
secp256k1_sha256 sha;
secp256k1_sha256 sha_optimized;
unsigned char nonce[32], nonce_z[32];
unsigned char msg[32];
size_t msglen = sizeof(msg);
unsigned char key[32];
unsigned char pk[32];
unsigned char aux_rand[32];
unsigned char *args[5];
int i;
/* Check that hash initialized by
* secp256k1_nonce_function_bip340_sha256_tagged has the expected
* state. */
secp256k1_sha256_initialize_tagged(&sha, tag, sizeof(tag));
secp256k1_nonce_function_bip340_sha256_tagged(&sha_optimized);
test_sha256_eq(&sha, &sha_optimized);
/* Check that hash initialized by
* secp256k1_nonce_function_bip340_sha256_tagged_aux has the expected
* state. */
secp256k1_sha256_initialize_tagged(&sha, aux_tag, sizeof(aux_tag));
secp256k1_nonce_function_bip340_sha256_tagged_aux(&sha_optimized);
test_sha256_eq(&sha, &sha_optimized);
secp256k1_testrand256(msg);
secp256k1_testrand256(key);
secp256k1_testrand256(pk);
secp256k1_testrand256(aux_rand);
/* Check that a bitflip in an argument results in different nonces. */
args[0] = msg;
args[1] = key;
args[2] = pk;
args[3] = algo;
args[4] = aux_rand;
for (i = 0; i < COUNT; i++) {
nonce_function_bip340_bitflip(args, 0, 32, msglen, algolen);
nonce_function_bip340_bitflip(args, 1, 32, msglen, algolen);
nonce_function_bip340_bitflip(args, 2, 32, msglen, algolen);
/* Flip algo special case "BIP0340/nonce" */
nonce_function_bip340_bitflip(args, 3, algolen, msglen, algolen);
/* Flip algo again */
nonce_function_bip340_bitflip(args, 3, algolen, msglen, algolen);
nonce_function_bip340_bitflip(args, 4, 32, msglen, algolen);
}
/* NULL algo is disallowed */
CHECK(nonce_function_bip340(nonce, msg, msglen, key, pk, NULL, 0, NULL) == 0);
CHECK(nonce_function_bip340(nonce, msg, msglen, key, pk, algo, algolen, NULL) == 1);
/* Other algo is fine */
secp256k1_testrand_bytes_test(algo, algolen);
CHECK(nonce_function_bip340(nonce, msg, msglen, key, pk, algo, algolen, NULL) == 1);
for (i = 0; i < COUNT; i++) {
unsigned char nonce2[32];
uint32_t offset = secp256k1_testrand_int(msglen - 1);
size_t msglen_tmp = (msglen + offset) % msglen;
size_t algolen_tmp;
/* Different msglen gives different nonce */
CHECK(nonce_function_bip340(nonce2, msg, msglen_tmp, key, pk, algo, algolen, NULL) == 1);
CHECK(secp256k1_memcmp_var(nonce, nonce2, 32) != 0);
/* Different algolen gives different nonce */
offset = secp256k1_testrand_int(algolen - 1);
algolen_tmp = (algolen + offset) % algolen;
CHECK(nonce_function_bip340(nonce2, msg, msglen, key, pk, algo, algolen_tmp, NULL) == 1);
CHECK(secp256k1_memcmp_var(nonce, nonce2, 32) != 0);
}
/* NULL aux_rand argument is allowed, and identical to passing all zero aux_rand. */
memset(aux_rand, 0, 32);
CHECK(nonce_function_bip340(nonce_z, msg, msglen, key, pk, algo, algolen, &aux_rand) == 1);
CHECK(nonce_function_bip340(nonce, msg, msglen, key, pk, algo, algolen, NULL) == 1);
CHECK(secp256k1_memcmp_var(nonce_z, nonce, 32) == 0);
}
static void test_schnorrsig_api(void) {
unsigned char sk1[32];
unsigned char sk2[32];
unsigned char sk3[32];
unsigned char msg[32];
secp256k1_keypair keypairs[3];
secp256k1_keypair invalid_keypair = {{ 0 }};
secp256k1_xonly_pubkey pk[3];
secp256k1_xonly_pubkey zero_pk;
unsigned char sig[64];
secp256k1_schnorrsig_extraparams extraparams = SECP256K1_SCHNORRSIG_EXTRAPARAMS_INIT;
secp256k1_schnorrsig_extraparams invalid_extraparams = {{ 0 }, NULL, NULL};
/** setup **/
int ecount = 0;
secp256k1_context_set_error_callback(CTX, counting_illegal_callback_fn, &ecount);
secp256k1_context_set_illegal_callback(CTX, counting_illegal_callback_fn, &ecount);
secp256k1_context_set_error_callback(STATIC_CTX, counting_illegal_callback_fn, &ecount);
secp256k1_context_set_illegal_callback(STATIC_CTX, counting_illegal_callback_fn, &ecount);
secp256k1_testrand256(sk1);
secp256k1_testrand256(sk2);
secp256k1_testrand256(sk3);
secp256k1_testrand256(msg);
CHECK(secp256k1_keypair_create(CTX, &keypairs[0], sk1) == 1);
CHECK(secp256k1_keypair_create(CTX, &keypairs[1], sk2) == 1);
CHECK(secp256k1_keypair_create(CTX, &keypairs[2], sk3) == 1);
CHECK(secp256k1_keypair_xonly_pub(CTX, &pk[0], NULL, &keypairs[0]) == 1);
CHECK(secp256k1_keypair_xonly_pub(CTX, &pk[1], NULL, &keypairs[1]) == 1);
CHECK(secp256k1_keypair_xonly_pub(CTX, &pk[2], NULL, &keypairs[2]) == 1);
memset(&zero_pk, 0, sizeof(zero_pk));
/** main test body **/
ecount = 0;
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, msg, &keypairs[0], NULL) == 1);
CHECK(ecount == 0);
CHECK(secp256k1_schnorrsig_sign32(CTX, NULL, msg, &keypairs[0], NULL) == 0);
CHECK(ecount == 1);
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, NULL, &keypairs[0], NULL) == 0);
CHECK(ecount == 2);
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, msg, NULL, NULL) == 0);
CHECK(ecount == 3);
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, msg, &invalid_keypair, NULL) == 0);
CHECK(ecount == 4);
CHECK(secp256k1_schnorrsig_sign32(STATIC_CTX, sig, msg, &keypairs[0], NULL) == 0);
CHECK(ecount == 5);
ecount = 0;
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypairs[0], &extraparams) == 1);
CHECK(ecount == 0);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, NULL, msg, sizeof(msg), &keypairs[0], &extraparams) == 0);
CHECK(ecount == 1);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, NULL, sizeof(msg), &keypairs[0], &extraparams) == 0);
CHECK(ecount == 2);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, NULL, 0, &keypairs[0], &extraparams) == 1);
CHECK(ecount == 2);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), NULL, &extraparams) == 0);
CHECK(ecount == 3);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &invalid_keypair, &extraparams) == 0);
CHECK(ecount == 4);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypairs[0], NULL) == 1);
CHECK(ecount == 4);
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypairs[0], &invalid_extraparams) == 0);
CHECK(ecount == 5);
CHECK(secp256k1_schnorrsig_sign_custom(STATIC_CTX, sig, msg, sizeof(msg), &keypairs[0], &extraparams) == 0);
CHECK(ecount == 6);
ecount = 0;
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, msg, &keypairs[0], NULL) == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, sizeof(msg), &pk[0]) == 1);
CHECK(ecount == 0);
CHECK(secp256k1_schnorrsig_verify(CTX, NULL, msg, sizeof(msg), &pk[0]) == 0);
CHECK(ecount == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, NULL, sizeof(msg), &pk[0]) == 0);
CHECK(ecount == 2);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, NULL, 0, &pk[0]) == 0);
CHECK(ecount == 2);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, sizeof(msg), NULL) == 0);
CHECK(ecount == 3);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, sizeof(msg), &zero_pk) == 0);
CHECK(ecount == 4);
secp256k1_context_set_error_callback(STATIC_CTX, NULL, NULL);
secp256k1_context_set_illegal_callback(STATIC_CTX, NULL, NULL);
}
/* Checks that hash initialized by secp256k1_schnorrsig_sha256_tagged has the
* expected state. */
static void test_schnorrsig_sha256_tagged(void) {
unsigned char tag[17] = "BIP0340/challenge";
secp256k1_sha256 sha;
secp256k1_sha256 sha_optimized;
secp256k1_sha256_initialize_tagged(&sha, (unsigned char *) tag, sizeof(tag));
secp256k1_schnorrsig_sha256_tagged(&sha_optimized);
test_sha256_eq(&sha, &sha_optimized);
}
/* Helper function for schnorrsig_bip_vectors
* Signs the message and checks that it's the same as expected_sig. */
static void test_schnorrsig_bip_vectors_check_signing(const unsigned char *sk, const unsigned char *pk_serialized, const unsigned char *aux_rand, const unsigned char *msg, size_t msglen, const unsigned char *expected_sig) {
unsigned char sig[64];
secp256k1_keypair keypair;
secp256k1_xonly_pubkey pk, pk_expected;
secp256k1_schnorrsig_extraparams extraparams = SECP256K1_SCHNORRSIG_EXTRAPARAMS_INIT;
extraparams.ndata = (unsigned char*)aux_rand;
CHECK(secp256k1_keypair_create(CTX, &keypair, sk));
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, msglen, &keypair, &extraparams));
CHECK(secp256k1_memcmp_var(sig, expected_sig, 64) == 0);
if (msglen == 32) {
memset(sig, 0, 64);
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, msg, &keypair, aux_rand));
CHECK(secp256k1_memcmp_var(sig, expected_sig, 64) == 0);
}
CHECK(secp256k1_xonly_pubkey_parse(CTX, &pk_expected, pk_serialized));
CHECK(secp256k1_keypair_xonly_pub(CTX, &pk, NULL, &keypair));
CHECK(secp256k1_memcmp_var(&pk, &pk_expected, sizeof(pk)) == 0);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, msglen, &pk));
}
/* Helper function for schnorrsig_bip_vectors
* Checks that both verify and verify_batch (TODO) return the same value as expected. */
static void test_schnorrsig_bip_vectors_check_verify(const unsigned char *pk_serialized, const unsigned char *msg, size_t msglen, const unsigned char *sig, int expected) {
secp256k1_xonly_pubkey pk;
CHECK(secp256k1_xonly_pubkey_parse(CTX, &pk, pk_serialized));
CHECK(expected == secp256k1_schnorrsig_verify(CTX, sig, msg, msglen, &pk));
}
/* Test vectors according to BIP-340 ("Schnorr Signatures for secp256k1"). See
* https://github.com/bitcoin/bips/blob/master/bip-0340/test-vectors.csv. */
static void test_schnorrsig_bip_vectors(void) {
{
/* Test vector 0 */
const unsigned char sk[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03
};
const unsigned char pk[32] = {
0xF9, 0x30, 0x8A, 0x01, 0x92, 0x58, 0xC3, 0x10,
0x49, 0x34, 0x4F, 0x85, 0xF8, 0x9D, 0x52, 0x29,
0xB5, 0x31, 0xC8, 0x45, 0x83, 0x6F, 0x99, 0xB0,
0x86, 0x01, 0xF1, 0x13, 0xBC, 0xE0, 0x36, 0xF9
};
const unsigned char aux_rand[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const unsigned char msg[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
const unsigned char sig[64] = {
0xE9, 0x07, 0x83, 0x1F, 0x80, 0x84, 0x8D, 0x10,
0x69, 0xA5, 0x37, 0x1B, 0x40, 0x24, 0x10, 0x36,
0x4B, 0xDF, 0x1C, 0x5F, 0x83, 0x07, 0xB0, 0x08,
0x4C, 0x55, 0xF1, 0xCE, 0x2D, 0xCA, 0x82, 0x15,
0x25, 0xF6, 0x6A, 0x4A, 0x85, 0xEA, 0x8B, 0x71,
0xE4, 0x82, 0xA7, 0x4F, 0x38, 0x2D, 0x2C, 0xE5,
0xEB, 0xEE, 0xE8, 0xFD, 0xB2, 0x17, 0x2F, 0x47,
0x7D, 0xF4, 0x90, 0x0D, 0x31, 0x05, 0x36, 0xC0
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 1 */
const unsigned char sk[32] = {
0xB7, 0xE1, 0x51, 0x62, 0x8A, 0xED, 0x2A, 0x6A,
0xBF, 0x71, 0x58, 0x80, 0x9C, 0xF4, 0xF3, 0xC7,
0x62, 0xE7, 0x16, 0x0F, 0x38, 0xB4, 0xDA, 0x56,
0xA7, 0x84, 0xD9, 0x04, 0x51, 0x90, 0xCF, 0xEF
};
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char aux_rand[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x68, 0x96, 0xBD, 0x60, 0xEE, 0xAE, 0x29, 0x6D,
0xB4, 0x8A, 0x22, 0x9F, 0xF7, 0x1D, 0xFE, 0x07,
0x1B, 0xDE, 0x41, 0x3E, 0x6D, 0x43, 0xF9, 0x17,
0xDC, 0x8D, 0xCF, 0x8C, 0x78, 0xDE, 0x33, 0x41,
0x89, 0x06, 0xD1, 0x1A, 0xC9, 0x76, 0xAB, 0xCC,
0xB2, 0x0B, 0x09, 0x12, 0x92, 0xBF, 0xF4, 0xEA,
0x89, 0x7E, 0xFC, 0xB6, 0x39, 0xEA, 0x87, 0x1C,
0xFA, 0x95, 0xF6, 0xDE, 0x33, 0x9E, 0x4B, 0x0A
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 2 */
const unsigned char sk[32] = {
0xC9, 0x0F, 0xDA, 0xA2, 0x21, 0x68, 0xC2, 0x34,
0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,
0x02, 0x0B, 0xBE, 0xA6, 0x3B, 0x14, 0xE5, 0xC9
};
const unsigned char pk[32] = {
0xDD, 0x30, 0x8A, 0xFE, 0xC5, 0x77, 0x7E, 0x13,
0x12, 0x1F, 0xA7, 0x2B, 0x9C, 0xC1, 0xB7, 0xCC,
0x01, 0x39, 0x71, 0x53, 0x09, 0xB0, 0x86, 0xC9,
0x60, 0xE1, 0x8F, 0xD9, 0x69, 0x77, 0x4E, 0xB8
};
const unsigned char aux_rand[32] = {
0xC8, 0x7A, 0xA5, 0x38, 0x24, 0xB4, 0xD7, 0xAE,
0x2E, 0xB0, 0x35, 0xA2, 0xB5, 0xBB, 0xBC, 0xCC,
0x08, 0x0E, 0x76, 0xCD, 0xC6, 0xD1, 0x69, 0x2C,
0x4B, 0x0B, 0x62, 0xD7, 0x98, 0xE6, 0xD9, 0x06
};
const unsigned char msg[32] = {
0x7E, 0x2D, 0x58, 0xD8, 0xB3, 0xBC, 0xDF, 0x1A,
0xBA, 0xDE, 0xC7, 0x82, 0x90, 0x54, 0xF9, 0x0D,
0xDA, 0x98, 0x05, 0xAA, 0xB5, 0x6C, 0x77, 0x33,
0x30, 0x24, 0xB9, 0xD0, 0xA5, 0x08, 0xB7, 0x5C
};
const unsigned char sig[64] = {
0x58, 0x31, 0xAA, 0xEE, 0xD7, 0xB4, 0x4B, 0xB7,
0x4E, 0x5E, 0xAB, 0x94, 0xBA, 0x9D, 0x42, 0x94,
0xC4, 0x9B, 0xCF, 0x2A, 0x60, 0x72, 0x8D, 0x8B,
0x4C, 0x20, 0x0F, 0x50, 0xDD, 0x31, 0x3C, 0x1B,
0xAB, 0x74, 0x58, 0x79, 0xA5, 0xAD, 0x95, 0x4A,
0x72, 0xC4, 0x5A, 0x91, 0xC3, 0xA5, 0x1D, 0x3C,
0x7A, 0xDE, 0xA9, 0x8D, 0x82, 0xF8, 0x48, 0x1E,
0x0E, 0x1E, 0x03, 0x67, 0x4A, 0x6F, 0x3F, 0xB7
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 3 */
const unsigned char sk[32] = {
0x0B, 0x43, 0x2B, 0x26, 0x77, 0x93, 0x73, 0x81,
0xAE, 0xF0, 0x5B, 0xB0, 0x2A, 0x66, 0xEC, 0xD0,
0x12, 0x77, 0x30, 0x62, 0xCF, 0x3F, 0xA2, 0x54,
0x9E, 0x44, 0xF5, 0x8E, 0xD2, 0x40, 0x17, 0x10
};
const unsigned char pk[32] = {
0x25, 0xD1, 0xDF, 0xF9, 0x51, 0x05, 0xF5, 0x25,
0x3C, 0x40, 0x22, 0xF6, 0x28, 0xA9, 0x96, 0xAD,
0x3A, 0x0D, 0x95, 0xFB, 0xF2, 0x1D, 0x46, 0x8A,
0x1B, 0x33, 0xF8, 0xC1, 0x60, 0xD8, 0xF5, 0x17
};
const unsigned char aux_rand[32] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
const unsigned char msg[32] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
const unsigned char sig[64] = {
0x7E, 0xB0, 0x50, 0x97, 0x57, 0xE2, 0x46, 0xF1,
0x94, 0x49, 0x88, 0x56, 0x51, 0x61, 0x1C, 0xB9,
0x65, 0xEC, 0xC1, 0xA1, 0x87, 0xDD, 0x51, 0xB6,
0x4F, 0xDA, 0x1E, 0xDC, 0x96, 0x37, 0xD5, 0xEC,
0x97, 0x58, 0x2B, 0x9C, 0xB1, 0x3D, 0xB3, 0x93,
0x37, 0x05, 0xB3, 0x2B, 0xA9, 0x82, 0xAF, 0x5A,
0xF2, 0x5F, 0xD7, 0x88, 0x81, 0xEB, 0xB3, 0x27,
0x71, 0xFC, 0x59, 0x22, 0xEF, 0xC6, 0x6E, 0xA3
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 4 */
const unsigned char pk[32] = {
0xD6, 0x9C, 0x35, 0x09, 0xBB, 0x99, 0xE4, 0x12,
0xE6, 0x8B, 0x0F, 0xE8, 0x54, 0x4E, 0x72, 0x83,
0x7D, 0xFA, 0x30, 0x74, 0x6D, 0x8B, 0xE2, 0xAA,
0x65, 0x97, 0x5F, 0x29, 0xD2, 0x2D, 0xC7, 0xB9
};
const unsigned char msg[32] = {
0x4D, 0xF3, 0xC3, 0xF6, 0x8F, 0xCC, 0x83, 0xB2,
0x7E, 0x9D, 0x42, 0xC9, 0x04, 0x31, 0xA7, 0x24,
0x99, 0xF1, 0x78, 0x75, 0xC8, 0x1A, 0x59, 0x9B,
0x56, 0x6C, 0x98, 0x89, 0xB9, 0x69, 0x67, 0x03
};
const unsigned char sig[64] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x3B, 0x78, 0xCE, 0x56, 0x3F,
0x89, 0xA0, 0xED, 0x94, 0x14, 0xF5, 0xAA, 0x28,
0xAD, 0x0D, 0x96, 0xD6, 0x79, 0x5F, 0x9C, 0x63,
0x76, 0xAF, 0xB1, 0x54, 0x8A, 0xF6, 0x03, 0xB3,
0xEB, 0x45, 0xC9, 0xF8, 0x20, 0x7D, 0xEE, 0x10,
0x60, 0xCB, 0x71, 0xC0, 0x4E, 0x80, 0xF5, 0x93,
0x06, 0x0B, 0x07, 0xD2, 0x83, 0x08, 0xD7, 0xF4
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 5 */
const unsigned char pk[32] = {
0xEE, 0xFD, 0xEA, 0x4C, 0xDB, 0x67, 0x77, 0x50,
0xA4, 0x20, 0xFE, 0xE8, 0x07, 0xEA, 0xCF, 0x21,
0xEB, 0x98, 0x98, 0xAE, 0x79, 0xB9, 0x76, 0x87,
0x66, 0xE4, 0xFA, 0xA0, 0x4A, 0x2D, 0x4A, 0x34
};
secp256k1_xonly_pubkey pk_parsed;
/* No need to check the signature of the test vector as parsing the pubkey already fails */
CHECK(!secp256k1_xonly_pubkey_parse(CTX, &pk_parsed, pk));
}
{
/* Test vector 6 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0xFF, 0xF9, 0x7B, 0xD5, 0x75, 0x5E, 0xEE, 0xA4,
0x20, 0x45, 0x3A, 0x14, 0x35, 0x52, 0x35, 0xD3,
0x82, 0xF6, 0x47, 0x2F, 0x85, 0x68, 0xA1, 0x8B,
0x2F, 0x05, 0x7A, 0x14, 0x60, 0x29, 0x75, 0x56,
0x3C, 0xC2, 0x79, 0x44, 0x64, 0x0A, 0xC6, 0x07,
0xCD, 0x10, 0x7A, 0xE1, 0x09, 0x23, 0xD9, 0xEF,
0x7A, 0x73, 0xC6, 0x43, 0xE1, 0x66, 0xBE, 0x5E,
0xBE, 0xAF, 0xA3, 0x4B, 0x1A, 0xC5, 0x53, 0xE2
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 7 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x1F, 0xA6, 0x2E, 0x33, 0x1E, 0xDB, 0xC2, 0x1C,
0x39, 0x47, 0x92, 0xD2, 0xAB, 0x11, 0x00, 0xA7,
0xB4, 0x32, 0xB0, 0x13, 0xDF, 0x3F, 0x6F, 0xF4,
0xF9, 0x9F, 0xCB, 0x33, 0xE0, 0xE1, 0x51, 0x5F,
0x28, 0x89, 0x0B, 0x3E, 0xDB, 0x6E, 0x71, 0x89,
0xB6, 0x30, 0x44, 0x8B, 0x51, 0x5C, 0xE4, 0xF8,
0x62, 0x2A, 0x95, 0x4C, 0xFE, 0x54, 0x57, 0x35,
0xAA, 0xEA, 0x51, 0x34, 0xFC, 0xCD, 0xB2, 0xBD
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 8 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x6C, 0xFF, 0x5C, 0x3B, 0xA8, 0x6C, 0x69, 0xEA,
0x4B, 0x73, 0x76, 0xF3, 0x1A, 0x9B, 0xCB, 0x4F,
0x74, 0xC1, 0x97, 0x60, 0x89, 0xB2, 0xD9, 0x96,
0x3D, 0xA2, 0xE5, 0x54, 0x3E, 0x17, 0x77, 0x69,
0x96, 0x17, 0x64, 0xB3, 0xAA, 0x9B, 0x2F, 0xFC,
0xB6, 0xEF, 0x94, 0x7B, 0x68, 0x87, 0xA2, 0x26,
0xE8, 0xD7, 0xC9, 0x3E, 0x00, 0xC5, 0xED, 0x0C,
0x18, 0x34, 0xFF, 0x0D, 0x0C, 0x2E, 0x6D, 0xA6
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 9 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x12, 0x3D, 0xDA, 0x83, 0x28, 0xAF, 0x9C, 0x23,
0xA9, 0x4C, 0x1F, 0xEE, 0xCF, 0xD1, 0x23, 0xBA,
0x4F, 0xB7, 0x34, 0x76, 0xF0, 0xD5, 0x94, 0xDC,
0xB6, 0x5C, 0x64, 0x25, 0xBD, 0x18, 0x60, 0x51
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 10 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x76, 0x15, 0xFB, 0xAF, 0x5A, 0xE2, 0x88, 0x64,
0x01, 0x3C, 0x09, 0x97, 0x42, 0xDE, 0xAD, 0xB4,
0xDB, 0xA8, 0x7F, 0x11, 0xAC, 0x67, 0x54, 0xF9,
0x37, 0x80, 0xD5, 0xA1, 0x83, 0x7C, 0xF1, 0x97
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 11 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x4A, 0x29, 0x8D, 0xAC, 0xAE, 0x57, 0x39, 0x5A,
0x15, 0xD0, 0x79, 0x5D, 0xDB, 0xFD, 0x1D, 0xCB,
0x56, 0x4D, 0xA8, 0x2B, 0x0F, 0x26, 0x9B, 0xC7,
0x0A, 0x74, 0xF8, 0x22, 0x04, 0x29, 0xBA, 0x1D,
0x69, 0xE8, 0x9B, 0x4C, 0x55, 0x64, 0xD0, 0x03,
0x49, 0x10, 0x6B, 0x84, 0x97, 0x78, 0x5D, 0xD7,
0xD1, 0xD7, 0x13, 0xA8, 0xAE, 0x82, 0xB3, 0x2F,
0xA7, 0x9D, 0x5F, 0x7F, 0xC4, 0x07, 0xD3, 0x9B
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 12 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFC, 0x2F,
0x69, 0xE8, 0x9B, 0x4C, 0x55, 0x64, 0xD0, 0x03,
0x49, 0x10, 0x6B, 0x84, 0x97, 0x78, 0x5D, 0xD7,
0xD1, 0xD7, 0x13, 0xA8, 0xAE, 0x82, 0xB3, 0x2F,
0xA7, 0x9D, 0x5F, 0x7F, 0xC4, 0x07, 0xD3, 0x9B
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 13 */
const unsigned char pk[32] = {
0xDF, 0xF1, 0xD7, 0x7F, 0x2A, 0x67, 0x1C, 0x5F,
0x36, 0x18, 0x37, 0x26, 0xDB, 0x23, 0x41, 0xBE,
0x58, 0xFE, 0xAE, 0x1D, 0xA2, 0xDE, 0xCE, 0xD8,
0x43, 0x24, 0x0F, 0x7B, 0x50, 0x2B, 0xA6, 0x59
};
const unsigned char msg[32] = {
0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89
};
const unsigned char sig[64] = {
0x6C, 0xFF, 0x5C, 0x3B, 0xA8, 0x6C, 0x69, 0xEA,
0x4B, 0x73, 0x76, 0xF3, 0x1A, 0x9B, 0xCB, 0x4F,
0x74, 0xC1, 0x97, 0x60, 0x89, 0xB2, 0xD9, 0x96,
0x3D, 0xA2, 0xE5, 0x54, 0x3E, 0x17, 0x77, 0x69,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE,
0xBA, 0xAE, 0xDC, 0xE6, 0xAF, 0x48, 0xA0, 0x3B,
0xBF, 0xD2, 0x5E, 0x8C, 0xD0, 0x36, 0x41, 0x41
};
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 0);
}
{
/* Test vector 14 */
const unsigned char pk[32] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFC, 0x30
};
secp256k1_xonly_pubkey pk_parsed;
/* No need to check the signature of the test vector as parsing the pubkey already fails */
CHECK(!secp256k1_xonly_pubkey_parse(CTX, &pk_parsed, pk));
}
{
/* Test vector 15 */
const unsigned char sk[32] = {
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
};
const unsigned char pk[32] = {
0x77, 0x8C, 0xAA, 0x53, 0xB4, 0x39, 0x3A, 0xC4,
0x67, 0x77, 0x4D, 0x09, 0x49, 0x7A, 0x87, 0x22,
0x4B, 0xF9, 0xFA, 0xB6, 0xF6, 0xE6, 0x8B, 0x23,
0x08, 0x64, 0x97, 0x32, 0x4D, 0x6F, 0xD1, 0x17,
};
const unsigned char aux_rand[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
/* const unsigned char msg[0] = {}; */
const unsigned char sig[64] = {
0x71, 0x53, 0x5D, 0xB1, 0x65, 0xEC, 0xD9, 0xFB,
0xBC, 0x04, 0x6E, 0x5F, 0xFA, 0xEA, 0x61, 0x18,
0x6B, 0xB6, 0xAD, 0x43, 0x67, 0x32, 0xFC, 0xCC,
0x25, 0x29, 0x1A, 0x55, 0x89, 0x54, 0x64, 0xCF,
0x60, 0x69, 0xCE, 0x26, 0xBF, 0x03, 0x46, 0x62,
0x28, 0xF1, 0x9A, 0x3A, 0x62, 0xDB, 0x8A, 0x64,
0x9F, 0x2D, 0x56, 0x0F, 0xAC, 0x65, 0x28, 0x27,
0xD1, 0xAF, 0x05, 0x74, 0xE4, 0x27, 0xAB, 0x63,
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, NULL, 0, sig);
test_schnorrsig_bip_vectors_check_verify(pk, NULL, 0, sig, 1);
}
{
/* Test vector 16 */
const unsigned char sk[32] = {
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
};
const unsigned char pk[32] = {
0x77, 0x8C, 0xAA, 0x53, 0xB4, 0x39, 0x3A, 0xC4,
0x67, 0x77, 0x4D, 0x09, 0x49, 0x7A, 0x87, 0x22,
0x4B, 0xF9, 0xFA, 0xB6, 0xF6, 0xE6, 0x8B, 0x23,
0x08, 0x64, 0x97, 0x32, 0x4D, 0x6F, 0xD1, 0x17,
};
const unsigned char aux_rand[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char msg[] = { 0x11 };
const unsigned char sig[64] = {
0x08, 0xA2, 0x0A, 0x0A, 0xFE, 0xF6, 0x41, 0x24,
0x64, 0x92, 0x32, 0xE0, 0x69, 0x3C, 0x58, 0x3A,
0xB1, 0xB9, 0x93, 0x4A, 0xE6, 0x3B, 0x4C, 0x35,
0x11, 0xF3, 0xAE, 0x11, 0x34, 0xC6, 0xA3, 0x03,
0xEA, 0x31, 0x73, 0xBF, 0xEA, 0x66, 0x83, 0xBD,
0x10, 0x1F, 0xA5, 0xAA, 0x5D, 0xBC, 0x19, 0x96,
0xFE, 0x7C, 0xAC, 0xFC, 0x5A, 0x57, 0x7D, 0x33,
0xEC, 0x14, 0x56, 0x4C, 0xEC, 0x2B, 0xAC, 0xBF,
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 17 */
const unsigned char sk[32] = {
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
};
const unsigned char pk[32] = {
0x77, 0x8C, 0xAA, 0x53, 0xB4, 0x39, 0x3A, 0xC4,
0x67, 0x77, 0x4D, 0x09, 0x49, 0x7A, 0x87, 0x22,
0x4B, 0xF9, 0xFA, 0xB6, 0xF6, 0xE6, 0x8B, 0x23,
0x08, 0x64, 0x97, 0x32, 0x4D, 0x6F, 0xD1, 0x17,
};
const unsigned char aux_rand[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char msg[] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
0x11,
};
const unsigned char sig[64] = {
0x51, 0x30, 0xF3, 0x9A, 0x40, 0x59, 0xB4, 0x3B,
0xC7, 0xCA, 0xC0, 0x9A, 0x19, 0xEC, 0xE5, 0x2B,
0x5D, 0x86, 0x99, 0xD1, 0xA7, 0x1E, 0x3C, 0x52,
0xDA, 0x9A, 0xFD, 0xB6, 0xB5, 0x0A, 0xC3, 0x70,
0xC4, 0xA4, 0x82, 0xB7, 0x7B, 0xF9, 0x60, 0xF8,
0x68, 0x15, 0x40, 0xE2, 0x5B, 0x67, 0x71, 0xEC,
0xE1, 0xE5, 0xA3, 0x7F, 0xD8, 0x0E, 0x5A, 0x51,
0x89, 0x7C, 0x55, 0x66, 0xA9, 0x7E, 0xA5, 0xA5,
};
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
{
/* Test vector 18 */
const unsigned char sk[32] = {
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
0x03, 0x40, 0x03, 0x40, 0x03, 0x40, 0x03, 0x40,
};
const unsigned char pk[32] = {
0x77, 0x8C, 0xAA, 0x53, 0xB4, 0x39, 0x3A, 0xC4,
0x67, 0x77, 0x4D, 0x09, 0x49, 0x7A, 0x87, 0x22,
0x4B, 0xF9, 0xFA, 0xB6, 0xF6, 0xE6, 0x8B, 0x23,
0x08, 0x64, 0x97, 0x32, 0x4D, 0x6F, 0xD1, 0x17,
};
const unsigned char aux_rand[32] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const unsigned char sig[64] = {
0x40, 0x3B, 0x12, 0xB0, 0xD8, 0x55, 0x5A, 0x34,
0x41, 0x75, 0xEA, 0x7E, 0xC7, 0x46, 0x56, 0x63,
0x03, 0x32, 0x1E, 0x5D, 0xBF, 0xA8, 0xBE, 0x6F,
0x09, 0x16, 0x35, 0x16, 0x3E, 0xCA, 0x79, 0xA8,
0x58, 0x5E, 0xD3, 0xE3, 0x17, 0x08, 0x07, 0xE7,
0xC0, 0x3B, 0x72, 0x0F, 0xC5, 0x4C, 0x7B, 0x23,
0x89, 0x7F, 0xCB, 0xA0, 0xE9, 0xD0, 0xB4, 0xA0,
0x68, 0x94, 0xCF, 0xD2, 0x49, 0xF2, 0x23, 0x67,
};
unsigned char msg[100];
memset(msg, 0x99, sizeof(msg));
test_schnorrsig_bip_vectors_check_signing(sk, pk, aux_rand, msg, sizeof(msg), sig);
test_schnorrsig_bip_vectors_check_verify(pk, msg, sizeof(msg), sig, 1);
}
}
/* Nonce function that returns constant 0 */
static int nonce_function_failing(unsigned char *nonce32, const unsigned char *msg, size_t msglen, const unsigned char *key32, const unsigned char *xonly_pk32, const unsigned char *algo, size_t algolen, void *data) {
(void) msg;
(void) msglen;
(void) key32;
(void) xonly_pk32;
(void) algo;
(void) algolen;
(void) data;
(void) nonce32;
return 0;
}
/* Nonce function that sets nonce to 0 */
static int nonce_function_0(unsigned char *nonce32, const unsigned char *msg, size_t msglen, const unsigned char *key32, const unsigned char *xonly_pk32, const unsigned char *algo, size_t algolen, void *data) {
(void) msg;
(void) msglen;
(void) key32;
(void) xonly_pk32;
(void) algo;
(void) algolen;
(void) data;
memset(nonce32, 0, 32);
return 1;
}
/* Nonce function that sets nonce to 0xFF...0xFF */
static int nonce_function_overflowing(unsigned char *nonce32, const unsigned char *msg, size_t msglen, const unsigned char *key32, const unsigned char *xonly_pk32, const unsigned char *algo, size_t algolen, void *data) {
(void) msg;
(void) msglen;
(void) key32;
(void) xonly_pk32;
(void) algo;
(void) algolen;
(void) data;
memset(nonce32, 0xFF, 32);
return 1;
}
static void test_schnorrsig_sign(void) {
unsigned char sk[32];
secp256k1_xonly_pubkey pk;
secp256k1_keypair keypair;
const unsigned char msg[32] = "this is a msg for a schnorrsig..";
unsigned char sig[64];
unsigned char sig2[64];
unsigned char zeros64[64] = { 0 };
secp256k1_schnorrsig_extraparams extraparams = SECP256K1_SCHNORRSIG_EXTRAPARAMS_INIT;
unsigned char aux_rand[32];
secp256k1_testrand256(sk);
secp256k1_testrand256(aux_rand);
CHECK(secp256k1_keypair_create(CTX, &keypair, sk));
CHECK(secp256k1_keypair_xonly_pub(CTX, &pk, NULL, &keypair));
CHECK(secp256k1_schnorrsig_sign32(CTX, sig, msg, &keypair, NULL) == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, sizeof(msg), &pk));
/* Check that deprecated alias gives the same result */
CHECK(secp256k1_schnorrsig_sign(CTX, sig2, msg, &keypair, NULL) == 1);
CHECK(secp256k1_memcmp_var(sig, sig2, sizeof(sig)) == 0);
/* Test different nonce functions */
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypair, &extraparams) == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, sizeof(msg), &pk));
memset(sig, 1, sizeof(sig));
extraparams.noncefp = nonce_function_failing;
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypair, &extraparams) == 0);
CHECK(secp256k1_memcmp_var(sig, zeros64, sizeof(sig)) == 0);
memset(&sig, 1, sizeof(sig));
extraparams.noncefp = nonce_function_0;
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypair, &extraparams) == 0);
CHECK(secp256k1_memcmp_var(sig, zeros64, sizeof(sig)) == 0);
memset(&sig, 1, sizeof(sig));
extraparams.noncefp = nonce_function_overflowing;
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypair, &extraparams) == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig, msg, sizeof(msg), &pk));
/* When using the default nonce function, schnorrsig_sign_custom produces
* the same result as schnorrsig_sign with aux_rand = extraparams.ndata */
extraparams.noncefp = NULL;
extraparams.ndata = aux_rand;
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig, msg, sizeof(msg), &keypair, &extraparams) == 1);
CHECK(secp256k1_schnorrsig_sign32(CTX, sig2, msg, &keypair, extraparams.ndata) == 1);
CHECK(secp256k1_memcmp_var(sig, sig2, sizeof(sig)) == 0);
}
#define N_SIGS 3
/* Creates N_SIGS valid signatures and verifies them with verify and
* verify_batch (TODO). Then flips some bits and checks that verification now
* fails. */
static void test_schnorrsig_sign_verify(void) {
unsigned char sk[32];
unsigned char msg[N_SIGS][32];
unsigned char sig[N_SIGS][64];
size_t i;
secp256k1_keypair keypair;
secp256k1_xonly_pubkey pk;
secp256k1_scalar s;
secp256k1_testrand256(sk);
CHECK(secp256k1_keypair_create(CTX, &keypair, sk));
CHECK(secp256k1_keypair_xonly_pub(CTX, &pk, NULL, &keypair));
for (i = 0; i < N_SIGS; i++) {
secp256k1_testrand256(msg[i]);
CHECK(secp256k1_schnorrsig_sign32(CTX, sig[i], msg[i], &keypair, NULL));
CHECK(secp256k1_schnorrsig_verify(CTX, sig[i], msg[i], sizeof(msg[i]), &pk));
}
{
/* Flip a few bits in the signature and in the message and check that
* verify and verify_batch (TODO) fail */
size_t sig_idx = secp256k1_testrand_int(N_SIGS);
size_t byte_idx = secp256k1_testrand_bits(5);
unsigned char xorbyte = secp256k1_testrand_int(254)+1;
sig[sig_idx][byte_idx] ^= xorbyte;
CHECK(!secp256k1_schnorrsig_verify(CTX, sig[sig_idx], msg[sig_idx], sizeof(msg[sig_idx]), &pk));
sig[sig_idx][byte_idx] ^= xorbyte;
byte_idx = secp256k1_testrand_bits(5);
sig[sig_idx][32+byte_idx] ^= xorbyte;
CHECK(!secp256k1_schnorrsig_verify(CTX, sig[sig_idx], msg[sig_idx], sizeof(msg[sig_idx]), &pk));
sig[sig_idx][32+byte_idx] ^= xorbyte;
byte_idx = secp256k1_testrand_bits(5);
msg[sig_idx][byte_idx] ^= xorbyte;
CHECK(!secp256k1_schnorrsig_verify(CTX, sig[sig_idx], msg[sig_idx], sizeof(msg[sig_idx]), &pk));
msg[sig_idx][byte_idx] ^= xorbyte;
/* Check that above bitflips have been reversed correctly */
CHECK(secp256k1_schnorrsig_verify(CTX, sig[sig_idx], msg[sig_idx], sizeof(msg[sig_idx]), &pk));
}
/* Test overflowing s */
CHECK(secp256k1_schnorrsig_sign32(CTX, sig[0], msg[0], &keypair, NULL));
CHECK(secp256k1_schnorrsig_verify(CTX, sig[0], msg[0], sizeof(msg[0]), &pk));
memset(&sig[0][32], 0xFF, 32);
CHECK(!secp256k1_schnorrsig_verify(CTX, sig[0], msg[0], sizeof(msg[0]), &pk));
/* Test negative s */
CHECK(secp256k1_schnorrsig_sign32(CTX, sig[0], msg[0], &keypair, NULL));
CHECK(secp256k1_schnorrsig_verify(CTX, sig[0], msg[0], sizeof(msg[0]), &pk));
secp256k1_scalar_set_b32(&s, &sig[0][32], NULL);
secp256k1_scalar_negate(&s, &s);
secp256k1_scalar_get_b32(&sig[0][32], &s);
CHECK(!secp256k1_schnorrsig_verify(CTX, sig[0], msg[0], sizeof(msg[0]), &pk));
/* The empty message can be signed & verified */
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig[0], NULL, 0, &keypair, NULL) == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig[0], NULL, 0, &pk) == 1);
{
/* Test varying message lengths */
unsigned char msg_large[32 * 8];
uint32_t msglen = secp256k1_testrand_int(sizeof(msg_large));
for (i = 0; i < sizeof(msg_large); i += 32) {
secp256k1_testrand256(&msg_large[i]);
}
CHECK(secp256k1_schnorrsig_sign_custom(CTX, sig[0], msg_large, msglen, &keypair, NULL) == 1);
CHECK(secp256k1_schnorrsig_verify(CTX, sig[0], msg_large, msglen, &pk) == 1);
/* Verification for a random wrong message length fails */
msglen = (msglen + (sizeof(msg_large) - 1)) % sizeof(msg_large);
CHECK(secp256k1_schnorrsig_verify(CTX, sig[0], msg_large, msglen, &pk) == 0);
}
}
#undef N_SIGS
static void test_schnorrsig_taproot(void) {
unsigned char sk[32];
secp256k1_keypair keypair;
secp256k1_xonly_pubkey internal_pk;
unsigned char internal_pk_bytes[32];
secp256k1_xonly_pubkey output_pk;
unsigned char output_pk_bytes[32];
unsigned char tweak[32];
int pk_parity;
unsigned char msg[32];
unsigned char sig[64];
/* Create output key */
secp256k1_testrand256(sk);
CHECK(secp256k1_keypair_create(CTX, &keypair, sk) == 1);
CHECK(secp256k1_keypair_xonly_pub(CTX, &internal_pk, NULL, &keypair) == 1);
/* In actual taproot the tweak would be hash of internal_pk */
CHECK(secp256k1_xonly_pubkey_serialize(CTX, tweak, &internal_pk) == 1);
CHECK(secp256k1_keypair_xonly_tweak_add(CTX, &keypair, tweak) == 1);
CHECK(secp256k1_keypair_xonly_pub(CTX, &output_pk, &pk_parity, &keypair) == 1);
CHECK(secp256k1_xonly_pubkey_serialize(CTX, output_pk_bytes, &output_pk) == 1);
/* Key spend */