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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include "crypto/hash.h"
#include "crypto/crc32c.h"
#include "crypto/xxhash.h"
#include "crypto/sha.h"
#include "crypto/blake2.h"
void hash_init_accel(void)
{
crc32c_init_accel();
blake2_init_accel();
sha256_init_accel();
}
void hash_init_crc32c(void)
{
crc32c_init_accel();
}
void hash_init_blake2(void)
{
blake2_init_accel();
}
void hash_init_sha256(void)
{
sha256_init_accel();
}
/*
* Default builtin implementations
*/
int hash_crc32c(const u8* buf, size_t length, u8 *out)
{
u32 crc = ~0;
crc = crc32c(~0, buf, length);
put_unaligned_le32(~crc, out);
return 0;
}
int hash_xxhash(const u8 *buf, size_t length, u8 *out)
{
XXH64_hash_t hash;
hash = XXH64(buf, length, 0);
put_unaligned_le64(hash, out);
return 0;
}
/*
* Implementations of cryptographic primitives
*/
#if CRYPTOPROVIDER_BUILTIN == 1
int hash_sha256(const u8 *buf, size_t len, u8 *out)
{
SHA256Context context;
SHA256Reset(&context);
SHA256Input(&context, buf, len);
SHA256Result(&context, out);
return 0;
}
int hash_blake2b(const u8 *buf, size_t len, u8 *out)
{
blake2b_state S;
blake2b_init(&S, CRYPTO_HASH_SIZE_MAX);
blake2b_update(&S, buf, len);
blake2b_final(&S, out, CRYPTO_HASH_SIZE_MAX);
return 0;
}
#endif
#if CRYPTOPROVIDER_LIBGCRYPT == 1
#include <gcrypt.h>
int hash_sha256(const u8 *buf, size_t len, u8 *out)
{
gcry_md_hash_buffer(GCRY_MD_SHA256, out, buf, len);
return 0;
}
int hash_blake2b(const u8 *buf, size_t len, u8 *out)
{
gcry_md_hash_buffer(GCRY_MD_BLAKE2B_256, out, buf, len);
return 0;
}
#endif
#if CRYPTOPROVIDER_LIBSODIUM == 1
#include <sodium/crypto_hash_sha256.h>
#include <sodium/crypto_generichash_blake2b.h>
int hash_sha256(const u8 *buf, size_t len, u8 *out)
{
return crypto_hash_sha256(out, buf, len);
}
int hash_blake2b(const u8 *buf, size_t len, u8 *out)
{
return crypto_generichash_blake2b(out, CRYPTO_HASH_SIZE_MAX, buf, len,
NULL, 0);
}
#endif
#if CRYPTOPROVIDER_LIBKCAPI == 1
#include <kcapi.h>
int hash_sha256(const u8 *buf, size_t len, u8 *out)
{
static struct kcapi_handle *handle = NULL;
int ret;
if (!handle) {
ret = kcapi_md_init(&handle, "sha256", 0);
if (ret < 0) {
fprintf(stderr,
"HASH: cannot instantiate sha256, error %d\n",
ret);
exit(1);
}
}
ret = kcapi_md_digest(handle, buf, len, out, CRYPTO_HASH_SIZE_MAX);
/* kcapi_md_destroy(handle); */
return ret;
}
int hash_blake2b(const u8 *buf, size_t len, u8 *out)
{
static struct kcapi_handle *handle = NULL;
int ret;
if (!handle) {
ret = kcapi_md_init(&handle, "blake2b-256", 0);
if (ret < 0) {
fprintf(stderr,
"HASH: cannot instantiate blake2b-256, error %d\n",
ret);
exit(1);
}
}
ret = kcapi_md_digest(handle, buf, len, out, CRYPTO_HASH_SIZE_MAX);
/* kcapi_md_destroy(handle); */
return ret;
}
#endif
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