98 lines
4.1 KiB
C
98 lines
4.1 KiB
C
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/* The MIT License (MIT)
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*
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* Copyright (c) 2015 mehdi sotoodeh
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __ed25519_signature_h__
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#define __ed25519_signature_h__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* -- ed25519-sign ------------------------------------------------------------- */
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#define ed25519_public_key_size 32
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#define ed25519_secret_key_size 32
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#define ed25519_private_key_size 64
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#define ed25519_signature_size 64
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/* Generate public key associated with the secret key */
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void ed25519_CreateKeyPair(
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unsigned char *pubKey, /* OUT: public key */
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unsigned char *privKey, /* OUT: private key */
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const void *blinding, /* IN: [optional] null or blinding context */
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const unsigned char *sk); /* IN: secret key (32 bytes) */
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/* Generate message signature */
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void ed25519_SignMessage(
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unsigned char *signature, /* OUT:[64 bytes] signature (R,S) */
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const unsigned char *privKey, /* IN: [64 bytes] private key (sk,pk) */
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const void *blinding, /* IN: [optional] null or blinding context */
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const unsigned char *msg, /* IN: [msg_size bytes] message to sign */
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size_t msg_size); /* IN: size of message */
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void *ed25519_Blinding_Init(
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void *context, /* IO: null or ptr blinding context */
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const unsigned char *seed, /* IN: [size bytes] random blinding seed */
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size_t size); /* IN: size of blinding seed */
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void ed25519_Blinding_Finish(
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void *context); /* IN: blinding context */
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/* -- ed25519-verify ----------------------------------------------------------- */
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/* Single-phased signature validation.
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Returns 1 for SUCCESS and 0 for FAILURE
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*/
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int ed25519_VerifySignature(
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const unsigned char *signature, /* IN: [64 bytes] signature (R,S) */
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const unsigned char *publicKey, /* IN: [32 bytes] public key */
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const unsigned char *msg, /* IN: [msg_size bytes] message to sign */
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size_t msg_size); /* IN: size of message */
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/* First part of two-phase signature validation.
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This function creates context specifc to a given public key.
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Needs to be called once per public key
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*/
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void * ed25519_Verify_Init(
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void *context, /* IO: null or verify context to use */
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const unsigned char *publicKey); /* IN: [32 bytes] public key */
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/* Second part of two-phase signature validation.
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Input context is output of ed25519_Verify_Init() for associated public key.
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Call it once for each message/signature pairs
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Returns 1 for SUCCESS and 0 for FAILURE
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*/
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int ed25519_Verify_Check(
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const void *context, /* IN: created by ed25519_Verify_Init */
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const unsigned char *signature, /* IN: signature (R,S) */
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const unsigned char *msg, /* IN: message to sign */
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size_t msg_size); /* IN: size of message */
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/* Free up context memory */
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void ed25519_Verify_Finish(void *ctx);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ed25519_signature_h__ */
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