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124 lines
3.4 KiB
124 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Glue Code for the AVX assembler implementation of the Cast5 Cipher |
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* |
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* Copyright (C) 2012 Johannes Goetzfried |
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* <[email protected]> |
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*/ |
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#include <crypto/algapi.h> |
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#include <crypto/cast5.h> |
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#include <crypto/internal/simd.h> |
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#include <linux/crypto.h> |
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#include <linux/err.h> |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include "ecb_cbc_helpers.h" |
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#define CAST5_PARALLEL_BLOCKS 16 |
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asmlinkage void cast5_ecb_enc_16way(struct cast5_ctx *ctx, u8 *dst, |
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const u8 *src); |
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asmlinkage void cast5_ecb_dec_16way(struct cast5_ctx *ctx, u8 *dst, |
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const u8 *src); |
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asmlinkage void cast5_cbc_dec_16way(struct cast5_ctx *ctx, u8 *dst, |
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const u8 *src); |
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static int cast5_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key, |
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unsigned int keylen) |
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{ |
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return cast5_setkey(&tfm->base, key, keylen); |
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} |
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static int ecb_encrypt(struct skcipher_request *req) |
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{ |
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ECB_WALK_START(req, CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS); |
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ECB_BLOCK(CAST5_PARALLEL_BLOCKS, cast5_ecb_enc_16way); |
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ECB_BLOCK(1, __cast5_encrypt); |
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ECB_WALK_END(); |
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} |
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static int ecb_decrypt(struct skcipher_request *req) |
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{ |
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ECB_WALK_START(req, CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS); |
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ECB_BLOCK(CAST5_PARALLEL_BLOCKS, cast5_ecb_dec_16way); |
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ECB_BLOCK(1, __cast5_decrypt); |
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ECB_WALK_END(); |
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} |
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static int cbc_encrypt(struct skcipher_request *req) |
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{ |
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CBC_WALK_START(req, CAST5_BLOCK_SIZE, -1); |
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CBC_ENC_BLOCK(__cast5_encrypt); |
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CBC_WALK_END(); |
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} |
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static int cbc_decrypt(struct skcipher_request *req) |
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{ |
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CBC_WALK_START(req, CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS); |
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CBC_DEC_BLOCK(CAST5_PARALLEL_BLOCKS, cast5_cbc_dec_16way); |
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CBC_DEC_BLOCK(1, __cast5_decrypt); |
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CBC_WALK_END(); |
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} |
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static struct skcipher_alg cast5_algs[] = { |
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{ |
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.base.cra_name = "__ecb(cast5)", |
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.base.cra_driver_name = "__ecb-cast5-avx", |
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.base.cra_priority = 200, |
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.base.cra_flags = CRYPTO_ALG_INTERNAL, |
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.base.cra_blocksize = CAST5_BLOCK_SIZE, |
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.base.cra_ctxsize = sizeof(struct cast5_ctx), |
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.base.cra_module = THIS_MODULE, |
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.min_keysize = CAST5_MIN_KEY_SIZE, |
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.max_keysize = CAST5_MAX_KEY_SIZE, |
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.setkey = cast5_setkey_skcipher, |
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.encrypt = ecb_encrypt, |
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.decrypt = ecb_decrypt, |
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}, { |
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.base.cra_name = "__cbc(cast5)", |
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.base.cra_driver_name = "__cbc-cast5-avx", |
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.base.cra_priority = 200, |
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.base.cra_flags = CRYPTO_ALG_INTERNAL, |
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.base.cra_blocksize = CAST5_BLOCK_SIZE, |
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.base.cra_ctxsize = sizeof(struct cast5_ctx), |
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.base.cra_module = THIS_MODULE, |
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.min_keysize = CAST5_MIN_KEY_SIZE, |
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.max_keysize = CAST5_MAX_KEY_SIZE, |
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.ivsize = CAST5_BLOCK_SIZE, |
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.setkey = cast5_setkey_skcipher, |
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.encrypt = cbc_encrypt, |
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.decrypt = cbc_decrypt, |
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} |
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}; |
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static struct simd_skcipher_alg *cast5_simd_algs[ARRAY_SIZE(cast5_algs)]; |
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static int __init cast5_init(void) |
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{ |
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const char *feature_name; |
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if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, |
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&feature_name)) { |
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pr_info("CPU feature '%s' is not supported.\n", feature_name); |
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return -ENODEV; |
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} |
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return simd_register_skciphers_compat(cast5_algs, |
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ARRAY_SIZE(cast5_algs), |
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cast5_simd_algs); |
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} |
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static void __exit cast5_exit(void) |
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{ |
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simd_unregister_skciphers(cast5_algs, ARRAY_SIZE(cast5_algs), |
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cast5_simd_algs); |
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} |
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module_init(cast5_init); |
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module_exit(cast5_exit); |
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MODULE_DESCRIPTION("Cast5 Cipher Algorithm, AVX optimized"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS_CRYPTO("cast5");
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