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musig: move ge_{serialize,parse}_ext to module-independent file

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This commit is contained in:
Jonas Nick 2023-04-19 11:26:44 +00:00
parent 050d9b2912
commit d8e7f3763b
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GPG Key ID: 4861DBF262123605
2 changed files with 26 additions and 26 deletions
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26
src/modules/musig/session_impl.h
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@ -200,32 +200,6 @@ int secp256k1_musig_pubnonce_parse(const secp256k1_context* ctx, secp256k1_musig
return 1;
}
/* Outputs 33 zero bytes if the given group element is the point at infinity and
* otherwise outputs the compressed serialization */
static void secp256k1_ge_serialize_ext(unsigned char *out33, secp256k1_ge* ge) {
if (secp256k1_ge_is_infinity(ge)) {
memset(out33, 0, 33);
} else {
int ret;
size_t size = 33;
ret = secp256k1_eckey_pubkey_serialize(ge, out33, &size, 1);
/* Serialize must succeed because the point is not at infinity */
VERIFY_CHECK(ret && size == 33);
}
}
/* Outputs the point at infinity if the given byte array is all zero, otherwise
* attempts to parse compressed point serialization. */
static int secp256k1_ge_parse_ext(secp256k1_ge* ge, const unsigned char *in33) {
unsigned char zeros[33] = { 0 };
if (memcmp(in33, zeros, sizeof(zeros)) == 0) {
secp256k1_ge_set_infinity(ge);
return 1;
}
return secp256k1_eckey_pubkey_parse(ge, in33, 33);
}
int secp256k1_musig_aggnonce_serialize(const secp256k1_context* ctx, unsigned char *out66, const secp256k1_musig_aggnonce* nonce) {
secp256k1_ge ge[2];
int i;

26
src/secp256k1.c
View File

@ -800,6 +800,32 @@ int secp256k1_tagged_sha256(const secp256k1_context* ctx, unsigned char *hash32,
return 1;
}
/* Outputs 33 zero bytes if the given group element is the point at infinity and
* otherwise outputs the compressed serialization */
static void secp256k1_ge_serialize_ext(unsigned char *out33, secp256k1_ge* ge) {
if (secp256k1_ge_is_infinity(ge)) {
memset(out33, 0, 33);
} else {
int ret;
size_t size = 33;
ret = secp256k1_eckey_pubkey_serialize(ge, out33, &size, 1);
/* Serialize must succeed because the point is not at infinity */
VERIFY_CHECK(ret && size == 33);
}
}
/* Outputs the point at infinity if the given byte array is all zero, otherwise
* attempts to parse compressed point serialization. */
static int secp256k1_ge_parse_ext(secp256k1_ge* ge, const unsigned char *in33) {
unsigned char zeros[33] = { 0 };
if (memcmp(in33, zeros, sizeof(zeros)) == 0) {
secp256k1_ge_set_infinity(ge);
return 1;
}
return secp256k1_eckey_pubkey_parse(ge, in33, 33);
}
#ifdef ENABLE_MODULE_BPPP
# include "modules/bppp/main_impl.h"
#endif