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-rw-r--r--crypto/blake2b_generic.c320
1 files changed, 0 insertions, 320 deletions
diff --git a/crypto/blake2b_generic.c b/crypto/blake2b_generic.c
deleted file mode 100644
index 0ffd8d92e308..000000000000
--- a/crypto/blake2b_generic.c
+++ /dev/null
@@ -1,320 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0-only OR Apache-2.0)
-/*
- * BLAKE2b reference source code package - reference C implementations
- *
- * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
- * terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
- * your option. The terms of these licenses can be found at:
- *
- * - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- * - OpenSSL license : https://www.openssl.org/source/license.html
- * - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
- *
- * More information about the BLAKE2 hash function can be found at
- * https://blake2.net.
- *
- * Note: the original sources have been modified for inclusion in linux kernel
- * in terms of coding style, using generic helpers and simplifications of error
- * handling.
- */
-
-#include <asm/unaligned.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/bitops.h>
-#include <crypto/internal/hash.h>
-
-#define BLAKE2B_160_DIGEST_SIZE (160 / 8)
-#define BLAKE2B_256_DIGEST_SIZE (256 / 8)
-#define BLAKE2B_384_DIGEST_SIZE (384 / 8)
-#define BLAKE2B_512_DIGEST_SIZE (512 / 8)
-
-enum blake2b_constant {
- BLAKE2B_BLOCKBYTES = 128,
- BLAKE2B_KEYBYTES = 64,
-};
-
-struct blake2b_state {
- u64 h[8];
- u64 t[2];
- u64 f[2];
- u8 buf[BLAKE2B_BLOCKBYTES];
- size_t buflen;
-};
-
-static const u64 blake2b_IV[8] = {
- 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
- 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
- 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
- 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
-};
-
-static const u8 blake2b_sigma[12][16] = {
- { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
- { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
- { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
- { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 },
- { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 },
- { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 },
- { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 },
- { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 },
- { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 },
- { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0 },
- { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
- { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
-};
-
-static void blake2b_increment_counter(struct blake2b_state *S, const u64 inc)
-{
- S->t[0] += inc;
- S->t[1] += (S->t[0] < inc);
-}
-
-#define G(r,i,a,b,c,d) \
- do { \
- a = a + b + m[blake2b_sigma[r][2*i+0]]; \
- d = ror64(d ^ a, 32); \
- c = c + d; \
- b = ror64(b ^ c, 24); \
- a = a + b + m[blake2b_sigma[r][2*i+1]]; \
- d = ror64(d ^ a, 16); \
- c = c + d; \
- b = ror64(b ^ c, 63); \
- } while (0)
-
-#define ROUND(r) \
- do { \
- G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
- G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
- G(r,2,v[ 2],v[ 6],v[10],v[14]); \
- G(r,3,v[ 3],v[ 7],v[11],v[15]); \
- G(r,4,v[ 0],v[ 5],v[10],v[15]); \
- G(r,5,v[ 1],v[ 6],v[11],v[12]); \
- G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
- G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
- } while (0)
-
-static void blake2b_compress(struct blake2b_state *S,
- const u8 block[BLAKE2B_BLOCKBYTES])
-{
- u64 m[16];
- u64 v[16];
- size_t i;
-
- for (i = 0; i < 16; ++i)
- m[i] = get_unaligned_le64(block + i * sizeof(m[i]));
-
- for (i = 0; i < 8; ++i)
- v[i] = S->h[i];
-
- v[ 8] = blake2b_IV[0];
- v[ 9] = blake2b_IV[1];
- v[10] = blake2b_IV[2];
- v[11] = blake2b_IV[3];
- v[12] = blake2b_IV[4] ^ S->t[0];
- v[13] = blake2b_IV[5] ^ S->t[1];
- v[14] = blake2b_IV[6] ^ S->f[0];
- v[15] = blake2b_IV[7] ^ S->f[1];
-
- ROUND(0);
- ROUND(1);
- ROUND(2);
- ROUND(3);
- ROUND(4);
- ROUND(5);
- ROUND(6);
- ROUND(7);
- ROUND(8);
- ROUND(9);
- ROUND(10);
- ROUND(11);
-#ifdef CONFIG_CC_IS_CLANG
-#pragma nounroll /* https://bugs.llvm.org/show_bug.cgi?id=45803 */
-#endif
- for (i = 0; i < 8; ++i)
- S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
-}
-
-#undef G
-#undef ROUND
-
-struct blake2b_tfm_ctx {
- u8 key[BLAKE2B_KEYBYTES];
- unsigned int keylen;
-};
-
-static int blake2b_setkey(struct crypto_shash *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(tfm);
-
- if (keylen == 0 || keylen > BLAKE2B_KEYBYTES)
- return -EINVAL;
-
- memcpy(tctx->key, key, keylen);
- tctx->keylen = keylen;
-
- return 0;
-}
-
-static int blake2b_init(struct shash_desc *desc)
-{
- struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);
- struct blake2b_state *state = shash_desc_ctx(desc);
- const int digestsize = crypto_shash_digestsize(desc->tfm);
-
- memset(state, 0, sizeof(*state));
- memcpy(state->h, blake2b_IV, sizeof(state->h));
-
- /* Parameter block is all zeros except index 0, no xor for 1..7 */
- state->h[0] ^= 0x01010000 | tctx->keylen << 8 | digestsize;
-
- if (tctx->keylen) {
- /*
- * Prefill the buffer with the key, next call to _update or
- * _final will process it
- */
- memcpy(state->buf, tctx->key, tctx->keylen);
- state->buflen = BLAKE2B_BLOCKBYTES;
- }
- return 0;
-}
-
-static int blake2b_update(struct shash_desc *desc, const u8 *in,
- unsigned int inlen)
-{
- struct blake2b_state *state = shash_desc_ctx(desc);
- const size_t left = state->buflen;
- const size_t fill = BLAKE2B_BLOCKBYTES - left;
-
- if (!inlen)
- return 0;
-
- if (inlen > fill) {
- state->buflen = 0;
- /* Fill buffer */
- memcpy(state->buf + left, in, fill);
- blake2b_increment_counter(state, BLAKE2B_BLOCKBYTES);
- /* Compress */
- blake2b_compress(state, state->buf);
- in += fill;
- inlen -= fill;
- while (inlen > BLAKE2B_BLOCKBYTES) {
- blake2b_increment_counter(state, BLAKE2B_BLOCKBYTES);
- blake2b_compress(state, in);
- in += BLAKE2B_BLOCKBYTES;
- inlen -= BLAKE2B_BLOCKBYTES;
- }
- }
- memcpy(state->buf + state->buflen, in, inlen);
- state->buflen += inlen;
-
- return 0;
-}
-
-static int blake2b_final(struct shash_desc *desc, u8 *out)
-{
- struct blake2b_state *state = shash_desc_ctx(desc);
- const int digestsize = crypto_shash_digestsize(desc->tfm);
- size_t i;
-
- blake2b_increment_counter(state, state->buflen);
- /* Set last block */
- state->f[0] = (u64)-1;
- /* Padding */
- memset(state->buf + state->buflen, 0, BLAKE2B_BLOCKBYTES - state->buflen);
- blake2b_compress(state, state->buf);
-
- /* Avoid temporary buffer and switch the internal output to LE order */
- for (i = 0; i < ARRAY_SIZE(state->h); i++)
- __cpu_to_le64s(&state->h[i]);
-
- memcpy(out, state->h, digestsize);
- return 0;
-}
-
-static struct shash_alg blake2b_algs[] = {
- {
- .base.cra_name = "blake2b-160",
- .base.cra_driver_name = "blake2b-160-generic",
- .base.cra_priority = 100,
- .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .base.cra_blocksize = BLAKE2B_BLOCKBYTES,
- .base.cra_ctxsize = sizeof(struct blake2b_tfm_ctx),
- .base.cra_module = THIS_MODULE,
- .digestsize = BLAKE2B_160_DIGEST_SIZE,
- .setkey = blake2b_setkey,
- .init = blake2b_init,
- .update = blake2b_update,
- .final = blake2b_final,
- .descsize = sizeof(struct blake2b_state),
- }, {
- .base.cra_name = "blake2b-256",
- .base.cra_driver_name = "blake2b-256-generic",
- .base.cra_priority = 100,
- .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .base.cra_blocksize = BLAKE2B_BLOCKBYTES,
- .base.cra_ctxsize = sizeof(struct blake2b_tfm_ctx),
- .base.cra_module = THIS_MODULE,
- .digestsize = BLAKE2B_256_DIGEST_SIZE,
- .setkey = blake2b_setkey,
- .init = blake2b_init,
- .update = blake2b_update,
- .final = blake2b_final,
- .descsize = sizeof(struct blake2b_state),
- }, {
- .base.cra_name = "blake2b-384",
- .base.cra_driver_name = "blake2b-384-generic",
- .base.cra_priority = 100,
- .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .base.cra_blocksize = BLAKE2B_BLOCKBYTES,
- .base.cra_ctxsize = sizeof(struct blake2b_tfm_ctx),
- .base.cra_module = THIS_MODULE,
- .digestsize = BLAKE2B_384_DIGEST_SIZE,
- .setkey = blake2b_setkey,
- .init = blake2b_init,
- .update = blake2b_update,
- .final = blake2b_final,
- .descsize = sizeof(struct blake2b_state),
- }, {
- .base.cra_name = "blake2b-512",
- .base.cra_driver_name = "blake2b-512-generic",
- .base.cra_priority = 100,
- .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
- .base.cra_blocksize = BLAKE2B_BLOCKBYTES,
- .base.cra_ctxsize = sizeof(struct blake2b_tfm_ctx),
- .base.cra_module = THIS_MODULE,
- .digestsize = BLAKE2B_512_DIGEST_SIZE,
- .setkey = blake2b_setkey,
- .init = blake2b_init,
- .update = blake2b_update,
- .final = blake2b_final,
- .descsize = sizeof(struct blake2b_state),
- }
-};
-
-static int __init blake2b_mod_init(void)
-{
- return crypto_register_shashes(blake2b_algs, ARRAY_SIZE(blake2b_algs));
-}
-
-static void __exit blake2b_mod_fini(void)
-{
- crypto_unregister_shashes(blake2b_algs, ARRAY_SIZE(blake2b_algs));
-}
-
-subsys_initcall(blake2b_mod_init);
-module_exit(blake2b_mod_fini);
-
-MODULE_AUTHOR("David Sterba <kdave@kernel.org>");
-MODULE_DESCRIPTION("BLAKE2b generic implementation");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CRYPTO("blake2b-160");
-MODULE_ALIAS_CRYPTO("blake2b-160-generic");
-MODULE_ALIAS_CRYPTO("blake2b-256");
-MODULE_ALIAS_CRYPTO("blake2b-256-generic");
-MODULE_ALIAS_CRYPTO("blake2b-384");
-MODULE_ALIAS_CRYPTO("blake2b-384-generic");
-MODULE_ALIAS_CRYPTO("blake2b-512");
-MODULE_ALIAS_CRYPTO("blake2b-512-generic");
generated by cgit (git 2.34.1) at 2025-12-25 10:58:41 +0000