diff options
Diffstat (limited to 'src/secp256k1.c')
| -rw-r--r--[-rwxr-xr-x] | src/secp256k1.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/src/secp256k1.c b/src/secp256k1.c index fb8b882faa..4f8c01655b 100755..100644 --- a/src/secp256k1.c +++ b/src/secp256k1.c @@ -424,6 +424,33 @@ int secp256k1_ec_pubkey_create(const secp256k1_context* ctx, secp256k1_pubkey *p return ret; } +int secp256k1_ec_privkey_negate(const secp256k1_context* ctx, unsigned char *seckey) { + secp256k1_scalar sec; + VERIFY_CHECK(ctx != NULL); + ARG_CHECK(seckey != NULL); + + secp256k1_scalar_set_b32(&sec, seckey, NULL); + secp256k1_scalar_negate(&sec, &sec); + secp256k1_scalar_get_b32(seckey, &sec); + + return 1; +} + +int secp256k1_ec_pubkey_negate(const secp256k1_context* ctx, secp256k1_pubkey *pubkey) { + int ret = 0; + secp256k1_ge p; + VERIFY_CHECK(ctx != NULL); + ARG_CHECK(pubkey != NULL); + + ret = secp256k1_pubkey_load(ctx, &p, pubkey); + memset(pubkey, 0, sizeof(*pubkey)); + if (ret) { + secp256k1_ge_neg(&p, &p); + secp256k1_pubkey_save(pubkey, &p); + } + return ret; +} + int secp256k1_ec_privkey_tweak_add(const secp256k1_context* ctx, unsigned char *seckey, const unsigned char *tweak) { secp256k1_scalar term; secp256k1_scalar sec; @@ -552,10 +579,6 @@ int secp256k1_ec_pubkey_combine(const secp256k1_context* ctx, secp256k1_pubkey * # include "modules/ecdh/main_impl.h" #endif -#ifdef ENABLE_MODULE_SCHNORR -# include "modules/schnorr/main_impl.h" -#endif - #ifdef ENABLE_MODULE_RECOVERY # include "modules/recovery/main_impl.h" #endif |