diff options
Diffstat (limited to 'linux/crypto')
-rw-r--r-- | linux/crypto/api.c | 114 | ||||
-rw-r--r-- | linux/crypto/chacha20_generic.c | 111 | ||||
-rw-r--r-- | linux/crypto/poly1305_generic.c | 88 | ||||
-rw-r--r-- | linux/crypto/sha256_generic.c | 81 |
4 files changed, 0 insertions, 394 deletions
diff --git a/linux/crypto/api.c b/linux/crypto/api.c deleted file mode 100644 index 2f3ab2b5..00000000 --- a/linux/crypto/api.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * Cryptographic API for algorithms (i.e., low-level API). - * - * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - */ - -#include <linux/device.h> -#include <linux/err.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/rwsem.h> -#include <linux/slab.h> -#include <linux/string.h> - -#include <crypto/algapi.h> - -static LIST_HEAD(crypto_alg_list); -static DECLARE_RWSEM(crypto_alg_sem); - -struct crypto_type { -}; - -int crypto_register_alg(struct crypto_alg *alg) -{ - down_write(&crypto_alg_sem); - list_add(&alg->cra_list, &crypto_alg_list); - up_write(&crypto_alg_sem); - - return 0; -} - -static void *crypto_alloc_tfm(const char *name, - const struct crypto_type *type) -{ - struct crypto_alg *alg; - - down_read(&crypto_alg_sem); - list_for_each_entry(alg, &crypto_alg_list, cra_list) - if (alg->cra_type == type && !strcmp(alg->cra_name, name)) - goto found; - - alg = ERR_PTR(-ENOENT); -found: - up_read(&crypto_alg_sem); - - if (IS_ERR(alg)) - return ERR_CAST(alg); - - return alg->alloc_tfm() ?: ERR_PTR(-ENOMEM); -} - -/* skcipher: */ - -static const struct crypto_type crypto_skcipher_type2 = { -}; - -struct crypto_skcipher *crypto_alloc_skcipher(const char *name, - u32 type, u32 mask) -{ - return crypto_alloc_tfm(name, &crypto_skcipher_type2); -} - -int crypto_register_skcipher(struct skcipher_alg *alg) -{ - alg->base.cra_type = &crypto_skcipher_type2; - - return crypto_register_alg(&alg->base); -} - -/* shash: */ - -#include <crypto/hash.h> - -static int shash_finup(struct shash_desc *desc, const u8 *data, - unsigned len, u8 *out) -{ - return crypto_shash_update(desc, data, len) ?: - crypto_shash_final(desc, out); -} - -static int shash_digest(struct shash_desc *desc, const u8 *data, - unsigned len, u8 *out) -{ - return crypto_shash_init(desc) ?: - crypto_shash_finup(desc, data, len, out); -} - -static const struct crypto_type crypto_shash_type = { -}; - -struct crypto_shash *crypto_alloc_shash(const char *name, - u32 type, u32 mask) -{ - return crypto_alloc_tfm(name, &crypto_shash_type); -} - -int crypto_register_shash(struct shash_alg *alg) -{ - alg->base.cra_type = &crypto_shash_type; - - if (!alg->finup) - alg->finup = shash_finup; - if (!alg->digest) - alg->digest = shash_digest; - - return crypto_register_alg(&alg->base); -} diff --git a/linux/crypto/chacha20_generic.c b/linux/crypto/chacha20_generic.c deleted file mode 100644 index 914189e7..00000000 --- a/linux/crypto/chacha20_generic.c +++ /dev/null @@ -1,111 +0,0 @@ -/* - * ChaCha20 256-bit cipher algorithm, RFC7539 - * - * Copyright (C) 2015 Martin Willi - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/byteorder.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/scatterlist.h> -#include <asm/unaligned.h> - -#include <linux/crypto.h> -#include <crypto/algapi.h> -#include <crypto/chacha.h> -#include <crypto/skcipher.h> - -#include <sodium/crypto_stream_chacha20.h> - -static struct skcipher_alg alg; - -struct chacha20_tfm { - struct crypto_skcipher tfm; - u32 key[8]; -}; - -static int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key, - unsigned int keysize) -{ - struct chacha20_tfm *ctx = - container_of(tfm, struct chacha20_tfm, tfm); - int i; - - if (keysize != CHACHA_KEY_SIZE) - return -EINVAL; - - for (i = 0; i < ARRAY_SIZE(ctx->key); i++) - ctx->key[i] = get_unaligned_le32(key + i * sizeof(u32)); - - return 0; -} - -static int crypto_chacha20_crypt(struct skcipher_request *req) -{ - struct chacha20_tfm *ctx = - container_of(req->tfm, struct chacha20_tfm, tfm.base); - struct scatterlist *sg = req->src; - unsigned nbytes = req->cryptlen; - u32 iv[4]; - int ret; - - BUG_ON(req->src != req->dst); - - memcpy(iv, req->iv, sizeof(iv)); - - while (1) { - ret = crypto_stream_chacha20_xor_ic(sg_virt(sg), - sg_virt(sg), - sg->length, - (void *) &iv[2], - iv[0] | ((u64) iv[1] << 32), - (void *) ctx->key); - BUG_ON(ret); - - nbytes -= sg->length; - - if (sg_is_last(sg)) - break; - - BUG_ON(sg->length % CHACHA_BLOCK_SIZE); - iv[0] += sg->length / CHACHA_BLOCK_SIZE; - sg = sg_next(sg); - }; - - BUG_ON(nbytes); - - return 0; -} - -static void *crypto_chacha20_alloc_tfm(void) -{ - struct chacha20_tfm *tfm = kzalloc(sizeof(*tfm), GFP_KERNEL); - - if (!tfm) - return NULL; - - tfm->tfm.base.alg = &alg.base; - tfm->tfm.setkey = crypto_chacha20_setkey; - tfm->tfm.encrypt = crypto_chacha20_crypt; - tfm->tfm.decrypt = crypto_chacha20_crypt; - tfm->tfm.ivsize = CHACHA_IV_SIZE; - tfm->tfm.keysize = CHACHA_KEY_SIZE; - - return tfm; -} - -static struct skcipher_alg alg = { - .base.cra_name = "chacha20", - .base.alloc_tfm = crypto_chacha20_alloc_tfm, -}; - -__attribute__((constructor(110))) -static int chacha20_generic_mod_init(void) -{ - return crypto_register_skcipher(&alg); -} diff --git a/linux/crypto/poly1305_generic.c b/linux/crypto/poly1305_generic.c deleted file mode 100644 index acb554c0..00000000 --- a/linux/crypto/poly1305_generic.c +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Poly1305 authenticator algorithm, RFC7539 - * - * Copyright (C) 2015 Martin Willi - * - * Based on public domain code by Andrew Moon and Daniel J. Bernstein. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/byteorder.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <asm/unaligned.h> - -#include <linux/crypto.h> -#include <crypto/algapi.h> -#include <crypto/hash.h> -#include <crypto/poly1305.h> - -static struct shash_alg poly1305_alg; - -struct poly1305_desc_ctx { - bool key_done; - crypto_onetimeauth_poly1305_state s; -}; - -static int poly1305_init(struct shash_desc *desc) -{ - struct poly1305_desc_ctx *state = (void *) desc->ctx; - - state->key_done = false; - return 0; -} - -static int poly1305_update(struct shash_desc *desc, - const u8 *src, unsigned len) -{ - struct poly1305_desc_ctx *state = (void *) desc->ctx; - - if (!state->key_done) { - BUG_ON(len != crypto_onetimeauth_poly1305_KEYBYTES); - - state->key_done = true; - return crypto_onetimeauth_poly1305_init(&state->s, src); - } - - return crypto_onetimeauth_poly1305_update(&state->s, src, len); -} - -static int poly1305_final(struct shash_desc *desc, u8 *out) -{ - struct poly1305_desc_ctx *state = (void *) desc->ctx; - - return crypto_onetimeauth_poly1305_final(&state->s, out); -} - -static void *poly1305_alloc_tfm(void) -{ - struct crypto_shash *tfm = kzalloc(sizeof(*tfm), GFP_KERNEL); - - if (!tfm) - return NULL; - - tfm->base.alg = &poly1305_alg.base; - tfm->descsize = sizeof(struct poly1305_desc_ctx); - return tfm; -} - -static struct shash_alg poly1305_alg = { - .digestsize = crypto_onetimeauth_poly1305_BYTES, - .init = poly1305_init, - .update = poly1305_update, - .final = poly1305_final, - .descsize = sizeof(struct poly1305_desc_ctx), - - .base.cra_name = "poly1305", - .base.alloc_tfm = poly1305_alloc_tfm, -}; - -__attribute__((constructor(110))) -static int poly1305_mod_init(void) -{ - return crypto_register_shash(&poly1305_alg); -} diff --git a/linux/crypto/sha256_generic.c b/linux/crypto/sha256_generic.c deleted file mode 100644 index 9326bfe7..00000000 --- a/linux/crypto/sha256_generic.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * Cryptographic API. - * - * SHA-256, as specified in - * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf - * - * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>. - * - * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> - * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> - * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> - * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - */ - -#include <linux/bitops.h> -#include <linux/byteorder.h> -#include <linux/types.h> -#include <asm/unaligned.h> - -#include <linux/crypto.h> -#include <crypto/hash.h> - -#include <sodium/crypto_hash_sha256.h> - -static struct shash_alg sha256_alg; - -static int sha256_init(struct shash_desc *desc) -{ - crypto_hash_sha256_state *state = (void *) desc->ctx; - - return crypto_hash_sha256_init(state); -} - -static int sha256_update(struct shash_desc *desc, const u8 *data, - unsigned int len) -{ - crypto_hash_sha256_state *state = (void *) desc->ctx; - - return crypto_hash_sha256_update(state, data, len); -} - -static int sha256_final(struct shash_desc *desc, u8 *out) -{ - crypto_hash_sha256_state *state = (void *) desc->ctx; - - return crypto_hash_sha256_final(state, out); -} - -static void *sha256_alloc_tfm(void) -{ - struct crypto_shash *tfm = kzalloc(sizeof(*tfm), GFP_KERNEL); - - if (!tfm) - return NULL; - - tfm->base.alg = &sha256_alg.base; - tfm->descsize = sizeof(crypto_hash_sha256_state); - return tfm; -} - -static struct shash_alg sha256_alg = { - .digestsize = crypto_hash_sha256_BYTES, - .init = sha256_init, - .update = sha256_update, - .final = sha256_final, - .descsize = sizeof(crypto_hash_sha256_state), - .base.cra_name = "sha256", - .base.alloc_tfm = sha256_alloc_tfm, -}; - -__attribute__((constructor(110))) -static int __init sha256_generic_mod_init(void) -{ - return crypto_register_shash(&sha256_alg); -} |