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refactor(crypto): return error from ecdsa routines on unexpected curve

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This commit is contained in:
Ondřej Vejpustek 2021-11-03 22:35:16 +01:00
parent f918cf9a27
commit ec808050ba
1 changed files with 25 additions and 0 deletions
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25
crypto/zkp_ecdsa.c
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@ -49,6 +49,10 @@ int zkp_ecdsa_get_public_key33(const ecdsa_curve *curve,
const uint8_t *private_key_bytes,
uint8_t *public_key_bytes) {
assert(curve == &secp256k1);
if (curve != &secp256k1) {
return 1;
}
int result = 0;
secp256k1_pubkey public_key = {0};
@ -92,6 +96,10 @@ int zkp_ecdsa_get_public_key65(const ecdsa_curve *curve,
const uint8_t *private_key_bytes,
uint8_t *public_key_bytes) {
assert(curve == &secp256k1);
if (curve != &secp256k1) {
return 1;
}
int result = 0;
secp256k1_pubkey public_key = {0};
@ -140,6 +148,10 @@ int zkp_ecdsa_sign_digest(
int (*is_canonical)(uint8_t by, uint8_t signature_bytes[64])) {
assert(curve == &secp256k1);
assert(is_canonical == NULL);
if (curve != &secp256k1 || is_canonical != NULL) {
return 1;
}
int result = 0;
if (result == 0) {
@ -198,6 +210,10 @@ int zkp_ecdsa_recover_pub_from_sig(const ecdsa_curve *curve,
const uint8_t *signature_bytes,
const uint8_t *digest, int recid) {
assert(curve == &secp256k1);
if (curve != &secp256k1) {
return 1;
}
int result = 0;
const secp256k1_context *context_read_only = zkp_context_get_read_only();
@ -248,6 +264,10 @@ int zkp_ecdsa_verify_digest(const ecdsa_curve *curve,
const uint8_t *signature_bytes,
const uint8_t *digest) {
assert(curve == &secp256k1);
if (curve != &secp256k1) {
return 1;
}
int result = 0;
int public_key_length = 0;
@ -318,6 +338,11 @@ int zkp_ecdsa_verify(const ecdsa_curve *curve, HasherType hasher_type,
const uint8_t *public_key_bytes,
const uint8_t *signature_bytes, const uint8_t *message,
uint32_t message_length) {
assert(curve == &secp256k1);
if (curve != &secp256k1) {
return 1;
}
uint8_t hash[32] = {0};
hasher_Raw(hasher_type, message, message_length, hash);
int result =