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src/secp256k1/src/modules/extrakeys/main_impl.h
| Show First 20 Lines • Show All 118 Lines • ▼ Show 20 Lines | int secp256k1_xonly_pubkey_tweak_add_check(const secp256k1_context* ctx, const unsigned char *tweaked_pubkey32, int tweaked_pk_parity, const secp256k1_xonly_pubkey *internal_pubkey, const unsigned char *tweak32) { | ||||
| if (!secp256k1_xonly_pubkey_load(ctx, &pk, internal_pubkey) | if (!secp256k1_xonly_pubkey_load(ctx, &pk, internal_pubkey) | ||||
| || !secp256k1_ec_pubkey_tweak_add_helper(&ctx->ecmult_ctx, &pk, tweak32)) { | || !secp256k1_ec_pubkey_tweak_add_helper(&ctx->ecmult_ctx, &pk, tweak32)) { | ||||
| return 0; | return 0; | ||||
| } | } | ||||
| secp256k1_fe_normalize_var(&pk.x); | secp256k1_fe_normalize_var(&pk.x); | ||||
| secp256k1_fe_normalize_var(&pk.y); | secp256k1_fe_normalize_var(&pk.y); | ||||
| secp256k1_fe_get_b32(pk_expected32, &pk.x); | secp256k1_fe_get_b32(pk_expected32, &pk.x); | ||||
| return memcmp(&pk_expected32, tweaked_pubkey32, 32) == 0 | return secp256k1_memcmp_var(&pk_expected32, tweaked_pubkey32, 32) == 0 | ||||
| && secp256k1_fe_is_odd(&pk.y) == tweaked_pk_parity; | && secp256k1_fe_is_odd(&pk.y) == tweaked_pk_parity; | ||||
| } | } | ||||
| static void secp256k1_keypair_save(secp256k1_keypair *keypair, const secp256k1_scalar *sk, secp256k1_ge *pk) { | static void secp256k1_keypair_save(secp256k1_keypair *keypair, const secp256k1_scalar *sk, secp256k1_ge *pk) { | ||||
| secp256k1_scalar_get_b32(&keypair->data[0], sk); | secp256k1_scalar_get_b32(&keypair->data[0], sk); | ||||
| secp256k1_pubkey_save((secp256k1_pubkey *)&keypair->data[32], pk); | secp256k1_pubkey_save((secp256k1_pubkey *)&keypair->data[32], pk); | ||||
| } | } | ||||
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