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https://github.com/kdave/btrfs-progs
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8a60fde969
The crc32c selection has been already using the pointer-based approach so drop the cpuid detection and use our common code for that. Signed-off-by: David Sterba <dsterba@suse.com>
178 lines
3.4 KiB
C
178 lines
3.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include "crypto/hash.h"
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#include "crypto/crc32c.h"
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#include "crypto/xxhash.h"
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#include "crypto/sha.h"
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#include "crypto/blake2.h"
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void hash_init_accel(void)
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{
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crc32c_init_accel();
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blake2_init_accel();
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sha256_init_accel();
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}
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void hash_init_crc32c(void)
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{
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crc32c_init_accel();
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}
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void hash_init_blake2(void)
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{
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blake2_init_accel();
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}
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void hash_init_sha256(void)
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{
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sha256_init_accel();
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}
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/*
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* Default builtin implementations
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*/
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int hash_crc32c(const u8* buf, size_t length, u8 *out)
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{
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u32 crc = ~0;
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crc = crc32c(~0, buf, length);
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put_unaligned_le32(~crc, out);
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return 0;
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}
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int hash_xxhash(const u8 *buf, size_t length, u8 *out)
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{
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XXH64_hash_t hash;
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hash = XXH64(buf, length, 0);
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put_unaligned_le64(hash, out);
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return 0;
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}
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/*
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* Implementations of cryptographic primitives
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*/
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#if CRYPTOPROVIDER_BUILTIN == 1
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int hash_sha256(const u8 *buf, size_t len, u8 *out)
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{
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SHA256Context context;
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SHA256Reset(&context);
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SHA256Input(&context, buf, len);
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SHA256Result(&context, out);
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return 0;
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}
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int hash_blake2b(const u8 *buf, size_t len, u8 *out)
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{
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blake2b_state S;
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blake2b_init(&S, CRYPTO_HASH_SIZE_MAX);
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blake2b_update(&S, buf, len);
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blake2b_final(&S, out, CRYPTO_HASH_SIZE_MAX);
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return 0;
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}
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#endif
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#if CRYPTOPROVIDER_LIBGCRYPT == 1
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#include <gcrypt.h>
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int hash_sha256(const u8 *buf, size_t len, u8 *out)
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{
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gcry_md_hash_buffer(GCRY_MD_SHA256, out, buf, len);
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return 0;
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}
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int hash_blake2b(const u8 *buf, size_t len, u8 *out)
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{
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gcry_md_hash_buffer(GCRY_MD_BLAKE2B_256, out, buf, len);
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return 0;
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}
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#endif
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#if CRYPTOPROVIDER_LIBSODIUM == 1
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#include <sodium/crypto_hash_sha256.h>
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#include <sodium/crypto_generichash_blake2b.h>
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int hash_sha256(const u8 *buf, size_t len, u8 *out)
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{
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return crypto_hash_sha256(out, buf, len);
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}
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int hash_blake2b(const u8 *buf, size_t len, u8 *out)
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{
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return crypto_generichash_blake2b(out, CRYPTO_HASH_SIZE_MAX, buf, len,
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NULL, 0);
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}
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#endif
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#if CRYPTOPROVIDER_LIBKCAPI == 1
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#include <kcapi.h>
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int hash_sha256(const u8 *buf, size_t len, u8 *out)
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{
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static struct kcapi_handle *handle = NULL;
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int ret;
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if (!handle) {
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ret = kcapi_md_init(&handle, "sha256", 0);
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if (ret < 0) {
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fprintf(stderr,
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"HASH: cannot instantiate sha256, error %d\n",
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ret);
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exit(1);
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}
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}
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ret = kcapi_md_digest(handle, buf, len, out, CRYPTO_HASH_SIZE_MAX);
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/* kcapi_md_destroy(handle); */
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return ret;
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}
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int hash_blake2b(const u8 *buf, size_t len, u8 *out)
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{
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static struct kcapi_handle *handle = NULL;
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int ret;
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if (!handle) {
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ret = kcapi_md_init(&handle, "blake2b-256", 0);
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if (ret < 0) {
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fprintf(stderr,
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"HASH: cannot instantiate blake2b-256, error %d\n",
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ret);
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exit(1);
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}
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}
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ret = kcapi_md_digest(handle, buf, len, out, CRYPTO_HASH_SIZE_MAX);
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/* kcapi_md_destroy(handle); */
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return ret;
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}
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#endif
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