angd-dev/data-lite-c
1
0
Fork 0
Code Pull Requests Releases Activity

Replaced system SQLite with SQLCipher to support encrypted database

Browse Source
This commit is contained in:
Oleksii Zghurskyi
2025-06-07 18:11:17 +03:00
parent f4198d62a7
commit 177d74700f
534 changed files with 362771 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
Sources/DataLiteC/libtomcrypt/pk/ed25519/ed25519_sign.c Normal file
View File

@@ -0,0 +1,126 @@
/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
#include "tomcrypt_private.h"
/**
@file ed25519_shared_secret.c
Create an Ed25519 signature, Steffen Jaeckel
*/
#ifdef LTC_CURVE25519
static int s_ed25519_sign(const unsigned char *msg, unsigned long msglen,
unsigned char *sig, unsigned long *siglen,
const unsigned char *ctx, unsigned long ctxlen,
const curve25519_key *private_key)
{
unsigned char *s;
unsigned long long smlen;
int err;
LTC_ARGCHK(msg != NULL);
LTC_ARGCHK(sig != NULL);
LTC_ARGCHK(siglen != NULL);
LTC_ARGCHK(private_key != NULL);
if (private_key->pka != LTC_PKA_ED25519) return CRYPT_PK_INVALID_TYPE;
if (private_key->type != PK_PRIVATE) return CRYPT_PK_INVALID_TYPE;
if (*siglen < 64uL) {
*siglen = 64uL;
return CRYPT_BUFFER_OVERFLOW;
}
smlen = msglen + 64;
s = XMALLOC(smlen);
if (s == NULL) return CRYPT_MEM;
err = tweetnacl_crypto_sign(s, &smlen,
msg, msglen,
private_key->priv, private_key->pub,
ctx, ctxlen);
XMEMCPY(sig, s, 64uL);
*siglen = 64uL;
#ifdef LTC_CLEAN_STACK
zeromem(s, smlen);
#endif
XFREE(s);
return err;
}
/**
Create an Ed25519ctx signature.
@param msg The data to be signed
@param msglen [in] The size of the date to be signed
@param sig [out] The destination of the shared data
@param siglen [in/out] The max size and resulting size of the shared data.
@param ctx [in] The context is a constant null terminated string
@param private_key The private Ed25519 key in the pair
@return CRYPT_OK if successful
*/
int ed25519ctx_sign(const unsigned char *msg, unsigned long msglen,
unsigned char *sig, unsigned long *siglen,
const unsigned char *ctx, unsigned long ctxlen,
const curve25519_key *private_key)
{
int err;
unsigned char ctx_prefix[292];
unsigned long ctx_prefix_size = sizeof(ctx_prefix);
LTC_ARGCHK(ctx != NULL);
if ((err = ec25519_crypto_ctx(ctx_prefix, &ctx_prefix_size, 0, ctx, ctxlen)) != CRYPT_OK)
return err;
return s_ed25519_sign(msg, msglen, sig, siglen, ctx_prefix, ctx_prefix_size, private_key);
}
/**
Create an Ed25519ph signature.
@param msg The data to be signed
@param msglen [in] The size of the date to be signed
@param sig [out] The destination of the shared data
@param siglen [in/out] The max size and resulting size of the shared data.
@param ctx [in] The context is a constant null terminated string
@param private_key The private Ed25519 key in the pair
@return CRYPT_OK if successful
*/
int ed25519ph_sign(const unsigned char *msg, unsigned long msglen,
unsigned char *sig, unsigned long *siglen,
const unsigned char *ctx, unsigned long ctxlen,
const curve25519_key *private_key)
{
int err;
unsigned char msg_hash[64];
unsigned char ctx_prefix[292];
unsigned long ctx_prefix_size = sizeof(ctx_prefix);
if ((err = ec25519_crypto_ctx(ctx_prefix, &ctx_prefix_size, 1, ctx, ctxlen)) != CRYPT_OK)
return err;
if ((err = tweetnacl_crypto_ph(msg_hash, msg, msglen)) != CRYPT_OK)
return err;
return s_ed25519_sign(msg_hash, sizeof(msg_hash), sig, siglen, ctx_prefix, ctx_prefix_size, private_key);
}
/**
Create an Ed25519 signature.
@param msg The data to be signed
@param msglen [in] The size of the date to be signed
@param sig [out] The destination of the shared data
@param siglen [in/out] The max size and resulting size of the shared data.
@param private_key The private Ed25519 key in the pair
@return CRYPT_OK if successful
*/
int ed25519_sign(const unsigned char *msg, unsigned long msglen,
unsigned char *sig, unsigned long *siglen,
const curve25519_key *private_key)
{
return s_ed25519_sign(msg, msglen, sig, siglen, NULL, 0, private_key);
}
#endif