58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
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#ifndef _SECP256K1_SCHNORR_
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# define _SECP256K1_SCHNORR_
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# include "secp256k1.h"
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# ifdef __cplusplus
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extern "C" {
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# endif
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/**
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* Verify a signature created by secp256k1_schnorr_sign.
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* Returns: 1: correct signature
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* 0: incorrect signature
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* Args: ctx: a secp256k1 context object, initialized for verification.
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* In: sig64: the 64-byte signature being verified (cannot be NULL)
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* msg32: the 32-byte message hash being verified (cannot be NULL)
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* pubkey: the public key to verify with (cannot be NULL)
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*/
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SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_schnorr_verify(
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const secp256k1_context* ctx,
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const unsigned char *sig64,
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const unsigned char *msg32,
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const secp256k1_pubkey *pubkey
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4);
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/**
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* Create a signature using a custom EC-Schnorr-SHA256 construction. It
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* produces non-malleable 64-byte signatures which support batch validation,
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* and multiparty signing.
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* Returns: 1: signature created
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* 0: the nonce generation function failed, or the private key was
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* invalid.
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* Args: ctx: pointer to a context object, initialized for signing
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* (cannot be NULL)
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* Out: sig64: pointer to a 64-byte array where the signature will be
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* placed (cannot be NULL)
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* In: msg32: the 32-byte message hash being signed (cannot be NULL)
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* seckey: pointer to a 32-byte secret key (cannot be NULL)
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* noncefp:pointer to a nonce generation function. If NULL,
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* secp256k1_nonce_function_default is used
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* ndata: pointer to arbitrary data used by the nonce generation
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* function (can be NULL)
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*/
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SECP256K1_API int secp256k1_schnorr_sign(
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const secp256k1_context *ctx,
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unsigned char *sig64,
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const unsigned char *msg32,
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const unsigned char *seckey,
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secp256k1_nonce_function noncefp,
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const void *ndata
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4);
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# ifdef __cplusplus
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}
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# endif
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#endif
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