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schnorrsig: Add taproot test case

This commit is contained in:
Jonas Nick 2019-11-14 13:34:51 +00:00
parent 8dfd53ee3f
commit 16ffa9d97c
1 changed files with 37 additions and 0 deletions
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37
src/modules/schnorrsig/tests_impl.h
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@ -753,6 +753,42 @@ void test_schnorrsig_sign_verify(void) {
}
#undef N_SIGS
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_rand256(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 */
secp256k1_rand256(msg);
CHECK(secp256k1_schnorrsig_sign(ctx, sig, msg, &keypair, NULL, NULL) == 1);
/* Verify key spend */
CHECK(secp256k1_xonly_pubkey_parse(ctx, &output_pk, output_pk_bytes) == 1);
CHECK(secp256k1_schnorrsig_verify(ctx, sig, msg, &output_pk) == 1);
/* Script spend */
CHECK(secp256k1_xonly_pubkey_serialize(ctx, internal_pk_bytes, &internal_pk) == 1);
/* Verify script spend */
CHECK(secp256k1_xonly_pubkey_parse(ctx, &internal_pk, internal_pk_bytes) == 1);
CHECK(secp256k1_xonly_pubkey_tweak_add_check(ctx, output_pk_bytes, pk_parity, &internal_pk, tweak) == 1);
}
void run_schnorrsig_tests(void) {
int i;
run_nonce_function_bip340_tests();
@ -764,6 +800,7 @@ void run_schnorrsig_tests(void) {
test_schnorrsig_sign();
test_schnorrsig_sign_verify();
}
test_schnorrsig_taproot();
}
#endif