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schnorrsig: remove noncefp args from sign; add sign_custom function

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This makes the default sign function easier to use while allowing more granular
control through sign_custom.

Tests for sign_custom follow in a later commit.
This commit is contained in:
Jonas Nick
2020-10-30 17:48:16 +00:00
parent 442cee5baf
commit b6c0b72fb0
6 changed files with 52 additions and 31 deletions
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7
src/modules/schnorrsig/main_impl.h
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@@ -120,7 +120,12 @@ static void secp256k1_schnorrsig_challenge(secp256k1_scalar* e, const unsigned c
secp256k1_scalar_set_b32(e, buf, NULL);
}
int secp256k1_schnorrsig_sign(const secp256k1_context* ctx, unsigned char *sig64, const unsigned char *msg32, const secp256k1_keypair *keypair, secp256k1_nonce_function_hardened noncefp, void *ndata) {
int secp256k1_schnorrsig_sign(const secp256k1_context* ctx, unsigned char *sig64, const unsigned char *msg32, const secp256k1_keypair *keypair, unsigned char *aux_rand32) {
return secp256k1_schnorrsig_sign_custom(ctx, sig64, msg32, keypair, NULL, aux_rand32);
}
int secp256k1_schnorrsig_sign_custom(const secp256k1_context* ctx, unsigned char *sig64, const unsigned char *msg32, const secp256k1_keypair *keypair, secp256k1_nonce_function_hardened noncefp, void *ndata) {
secp256k1_scalar sk;
secp256k1_scalar e;
secp256k1_scalar k;