Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112// SPDX-License-Identifier: GPL-2.0-or-later/* * Crypto API support for BLAKE2b * * Copyright 2025 Google LLC */#include <crypto/blake2b.h>#include <crypto/internal/hash.h>#include <linux/kernel.h>#include <linux/module.h>
struct blake2b_tfm_ctx { unsigned int keylen; u8 key[BLAKE2B_KEY_SIZE];};
static int crypto_blake2b_setkey(struct crypto_shash *tfm, const u8 *key, unsigned int keylen){ struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(tfm);
if (keylen > BLAKE2B_KEY_SIZE) return -EINVAL; memcpy(tctx->key, key, keylen); tctx->keylen = keylen; return 0;}
#define BLAKE2B_CTX(desc) ((struct blake2b_ctx *)shash_desc_ctx(desc))
static int crypto_blake2b_init(struct shash_desc *desc){ const struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm); unsigned int digestsize = crypto_shash_digestsize(desc->tfm);
blake2b_init_key(BLAKE2B_CTX(desc), digestsize, tctx->key, tctx->keylen); return 0;}
static int crypto_blake2b_update(struct shash_desc *desc, const u8 *data, unsigned int len){ blake2b_update(BLAKE2B_CTX(desc), data, len); return 0;}
static int crypto_blake2b_final(struct shash_desc *desc, u8 *out){ blake2b_final(BLAKE2B_CTX(desc), out); return 0;}
static int crypto_blake2b_digest(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out){ const struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm); unsigned int digestsize = crypto_shash_digestsize(desc->tfm);
blake2b(tctx->key, tctx->keylen, data, len, out, digestsize); return 0;}
#define BLAKE2B_ALG(name, digest_size) \ { \ .base.cra_name = name, \ .base.cra_driver_name = name "-lib", \ .base.cra_priority = 300, \ .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY, \ .base.cra_blocksize = BLAKE2B_BLOCK_SIZE, \ .base.cra_ctxsize = sizeof(struct blake2b_tfm_ctx), \ .base.cra_module = THIS_MODULE, \ .digestsize = digest_size, \ .setkey = crypto_blake2b_setkey, \ .init = crypto_blake2b_init, \ .update = crypto_blake2b_update, \ .final = crypto_blake2b_final, \ .digest = crypto_blake2b_digest, \ .descsize = sizeof(struct blake2b_ctx), \ }
static struct shash_alg algs[] = { BLAKE2B_ALG("blake2b-160", BLAKE2B_160_HASH_SIZE), BLAKE2B_ALG("blake2b-256", BLAKE2B_256_HASH_SIZE), BLAKE2B_ALG("blake2b-384", BLAKE2B_384_HASH_SIZE), BLAKE2B_ALG("blake2b-512", BLAKE2B_512_HASH_SIZE),};
static int __init crypto_blake2b_mod_init(void){ return crypto_register_shashes(algs, ARRAY_SIZE(algs));}module_init(crypto_blake2b_mod_init);
static void __exit crypto_blake2b_mod_exit(void){ crypto_unregister_shashes(algs, ARRAY_SIZE(algs));}module_exit(crypto_blake2b_mod_exit);
MODULE_LICENSE("GPL");MODULE_DESCRIPTION("Crypto API support for BLAKE2b");
MODULE_ALIAS_CRYPTO("blake2b-160");MODULE_ALIAS_CRYPTO("blake2b-160-lib");MODULE_ALIAS_CRYPTO("blake2b-256");MODULE_ALIAS_CRYPTO("blake2b-256-lib");MODULE_ALIAS_CRYPTO("blake2b-384");MODULE_ALIAS_CRYPTO("blake2b-384-lib");MODULE_ALIAS_CRYPTO("blake2b-512");MODULE_ALIAS_CRYPTO("blake2b-512-lib");