diff options
Diffstat (limited to 'src/secp256k1/include/secp256k1_extrakeys.h')
| -rw-r--r-- | src/secp256k1/include/secp256k1_extrakeys.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/src/secp256k1/include/secp256k1_extrakeys.h b/src/secp256k1/include/secp256k1_extrakeys.h index 6fc7b290f8..0a37fb6b9d 100644 --- a/src/secp256k1/include/secp256k1_extrakeys.h +++ b/src/secp256k1/include/secp256k1_extrakeys.h @@ -15,9 +15,9 @@ extern "C" { * The exact representation of data inside is implementation defined and not * guaranteed to be portable between different platforms or versions. It is * however guaranteed to be 64 bytes in size, and can be safely copied/moved. - * If you need to convert to a format suitable for storage, transmission, or - * comparison, use secp256k1_xonly_pubkey_serialize and - * secp256k1_xonly_pubkey_parse. + * If you need to convert to a format suitable for storage, transmission, use + * use secp256k1_xonly_pubkey_serialize and secp256k1_xonly_pubkey_parse. To + * compare keys, use secp256k1_xonly_pubkey_cmp. */ typedef struct { unsigned char data[64]; @@ -67,6 +67,21 @@ SECP256K1_API int secp256k1_xonly_pubkey_serialize( const secp256k1_xonly_pubkey* pubkey ) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3); +/** Compare two x-only public keys using lexicographic order + * + * Returns: <0 if the first public key is less than the second + * >0 if the first public key is greater than the second + * 0 if the two public keys are equal + * Args: ctx: a secp256k1 context object. + * In: pubkey1: first public key to compare + * pubkey2: second public key to compare + */ +SECP256K1_API int secp256k1_xonly_pubkey_cmp( + const secp256k1_context* ctx, + const secp256k1_xonly_pubkey* pk1, + const secp256k1_xonly_pubkey* pk2 +) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3); + /** Converts a secp256k1_pubkey into a secp256k1_xonly_pubkey. * * Returns: 1 if the public key was successfully converted |