diff options
Diffstat (limited to 'arch/x86/crypto')
-rw-r--r-- | arch/x86/crypto/Makefile | 2 | ||||
-rw-r--r-- | arch/x86/crypto/aesni-intel_glue.c | 267 | ||||
-rw-r--r-- | arch/x86/crypto/fpu.c | 166 |
3 files changed, 434 insertions, 1 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index ebe7dee..cfb0010 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -2,6 +2,8 @@ # Arch-specific CryptoAPI modules. # +obj-$(CONFIG_CRYPTO_FPU) += fpu.o + obj-$(CONFIG_CRYPTO_AES_586) += aes-i586.o obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o obj-$(CONFIG_CRYPTO_SALSA20_586) += salsa20-i586.o diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c index 02af0af..4e66339 100644 --- a/arch/x86/crypto/aesni-intel_glue.c +++ b/arch/x86/crypto/aesni-intel_glue.c @@ -21,6 +21,22 @@ #include <asm/i387.h> #include <asm/aes.h> +#if defined(CONFIG_CRYPTO_CTR) || defined(CONFIG_CRYPTO_CTR_MODULE) +#define HAS_CTR +#endif + +#if defined(CONFIG_CRYPTO_LRW) || defined(CONFIG_CRYPTO_LRW_MODULE) +#define HAS_LRW +#endif + +#if defined(CONFIG_CRYPTO_PCBC) || defined(CONFIG_CRYPTO_PCBC_MODULE) +#define HAS_PCBC +#endif + +#if defined(CONFIG_CRYPTO_XTS) || defined(CONFIG_CRYPTO_XTS_MODULE) +#define HAS_XTS +#endif + struct async_aes_ctx { struct cryptd_ablkcipher *cryptd_tfm; }; @@ -137,6 +153,41 @@ static struct crypto_alg aesni_alg = { } }; +static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +{ + struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); + + aesni_enc(ctx, dst, src); +} + +static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +{ + struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); + + aesni_dec(ctx, dst, src); +} + +static struct crypto_alg __aesni_alg = { + .cra_name = "__aes-aesni", + .cra_driver_name = "__driver-aes-aesni", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct crypto_aes_ctx)+AESNI_ALIGN-1, + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(__aesni_alg.cra_list), + .cra_u = { + .cipher = { + .cia_min_keysize = AES_MIN_KEY_SIZE, + .cia_max_keysize = AES_MAX_KEY_SIZE, + .cia_setkey = aes_set_key, + .cia_encrypt = __aes_encrypt, + .cia_decrypt = __aes_decrypt + } + } +}; + static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) @@ -277,8 +328,16 @@ static int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int key_len) { struct async_aes_ctx *ctx = crypto_ablkcipher_ctx(tfm); + struct crypto_ablkcipher *child = &ctx->cryptd_tfm->base; + int err; - return crypto_ablkcipher_setkey(&ctx->cryptd_tfm->base, key, key_len); + crypto_ablkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); + crypto_ablkcipher_set_flags(child, crypto_ablkcipher_get_flags(tfm) + & CRYPTO_TFM_REQ_MASK); + err = crypto_ablkcipher_setkey(child, key, key_len); + crypto_ablkcipher_set_flags(tfm, crypto_ablkcipher_get_flags(child) + & CRYPTO_TFM_RES_MASK); + return err; } static int ablk_encrypt(struct ablkcipher_request *req) @@ -411,6 +470,163 @@ static struct crypto_alg ablk_cbc_alg = { }, }; +#ifdef HAS_CTR +static int ablk_ctr_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("fpu(ctr(__driver-aes-aesni))", + 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_ctr_alg = { + .cra_name = "ctr(aes)", + .cra_driver_name = "ctr-aes-aesni", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct async_aes_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_ctr_alg.cra_list), + .cra_init = ablk_ctr_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + .geniv = "chainiv", + }, + }, +}; +#endif + +#ifdef HAS_LRW +static int ablk_lrw_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("fpu(lrw(__driver-aes-aesni))", + 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_lrw_alg = { + .cra_name = "lrw(aes)", + .cra_driver_name = "lrw-aes-aesni", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_aes_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_lrw_alg.cra_list), + .cra_init = ablk_lrw_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, + .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; +#endif + +#ifdef HAS_PCBC +static int ablk_pcbc_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("fpu(pcbc(__driver-aes-aesni))", + 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_pcbc_alg = { + .cra_name = "pcbc(aes)", + .cra_driver_name = "pcbc-aes-aesni", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_aes_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_pcbc_alg.cra_list), + .cra_init = ablk_pcbc_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; +#endif + +#ifdef HAS_XTS +static int ablk_xts_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("fpu(xts(__driver-aes-aesni))", + 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_xts_alg = { + .cra_name = "xts(aes)", + .cra_driver_name = "xts-aes-aesni", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_aes_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_xts_alg.cra_list), + .cra_init = ablk_xts_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = 2 * AES_MIN_KEY_SIZE, + .max_keysize = 2 * AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; +#endif + static int __init aesni_init(void) { int err; @@ -421,6 +637,8 @@ static int __init aesni_init(void) } if ((err = crypto_register_alg(&aesni_alg))) goto aes_err; + if ((err = crypto_register_alg(&__aesni_alg))) + goto __aes_err; if ((err = crypto_register_alg(&blk_ecb_alg))) goto blk_ecb_err; if ((err = crypto_register_alg(&blk_cbc_alg))) @@ -429,9 +647,41 @@ static int __init aesni_init(void) goto ablk_ecb_err; if ((err = crypto_register_alg(&ablk_cbc_alg))) goto ablk_cbc_err; +#ifdef HAS_CTR + if ((err = crypto_register_alg(&ablk_ctr_alg))) + goto ablk_ctr_err; +#endif +#ifdef HAS_LRW + if ((err = crypto_register_alg(&ablk_lrw_alg))) + goto ablk_lrw_err; +#endif +#ifdef HAS_PCBC + if ((err = crypto_register_alg(&ablk_pcbc_alg))) + goto ablk_pcbc_err; +#endif +#ifdef HAS_XTS + if ((err = crypto_register_alg(&ablk_xts_alg))) + goto ablk_xts_err; +#endif return err; +#ifdef HAS_XTS +ablk_xts_err: +#endif +#ifdef HAS_PCBC + crypto_unregister_alg(&ablk_pcbc_alg); +ablk_pcbc_err: +#endif +#ifdef HAS_LRW + crypto_unregister_alg(&ablk_lrw_alg); +ablk_lrw_err: +#endif +#ifdef HAS_CTR + crypto_unregister_alg(&ablk_ctr_alg); +ablk_ctr_err: +#endif + crypto_unregister_alg(&ablk_cbc_alg); ablk_cbc_err: crypto_unregister_alg(&ablk_ecb_alg); ablk_ecb_err: @@ -439,6 +689,8 @@ ablk_ecb_err: blk_cbc_err: crypto_unregister_alg(&blk_ecb_alg); blk_ecb_err: + crypto_unregister_alg(&__aesni_alg); +__aes_err: crypto_unregister_alg(&aesni_alg); aes_err: return err; @@ -446,10 +698,23 @@ aes_err: static void __exit aesni_exit(void) { +#ifdef HAS_XTS + crypto_unregister_alg(&ablk_xts_alg); +#endif +#ifdef HAS_PCBC + crypto_unregister_alg(&ablk_pcbc_alg); +#endif +#ifdef HAS_LRW + crypto_unregister_alg(&ablk_lrw_alg); +#endif +#ifdef HAS_CTR + crypto_unregister_alg(&ablk_ctr_alg); +#endif crypto_unregister_alg(&ablk_cbc_alg); crypto_unregister_alg(&ablk_ecb_alg); crypto_unregister_alg(&blk_cbc_alg); crypto_unregister_alg(&blk_ecb_alg); + crypto_unregister_alg(&__aesni_alg); crypto_unregister_alg(&aesni_alg); } diff --git a/arch/x86/crypto/fpu.c b/arch/x86/crypto/fpu.c new file mode 100644 index 0000000..5f9781a --- /dev/null +++ b/arch/x86/crypto/fpu.c @@ -0,0 +1,166 @@ +/* + * FPU: Wrapper for blkcipher touching fpu + * + * Copyright (c) Intel Corp. + * Author: Huang Ying <ying.huang@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 <crypto/algapi.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <asm/i387.h> + +struct crypto_fpu_ctx { + struct crypto_blkcipher *child; +}; + +static int crypto_fpu_setkey(struct crypto_tfm *parent, const u8 *key, + unsigned int keylen) +{ + struct crypto_fpu_ctx *ctx = crypto_tfm_ctx(parent); + struct crypto_blkcipher *child = ctx->child; + int err; + + crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); + crypto_blkcipher_set_flags(child, crypto_tfm_get_flags(parent) & + CRYPTO_TFM_REQ_MASK); + err = crypto_blkcipher_setkey(child, key, keylen); + crypto_tfm_set_flags(parent, crypto_blkcipher_get_flags(child) & + CRYPTO_TFM_RES_MASK); + return err; +} + +static int crypto_fpu_encrypt(struct blkcipher_desc *desc_in, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + int err; + struct crypto_fpu_ctx *ctx = crypto_blkcipher_ctx(desc_in->tfm); + struct crypto_blkcipher *child = ctx->child; + struct blkcipher_desc desc = { + .tfm = child, + .info = desc_in->info, + .flags = desc_in->flags, + }; + + kernel_fpu_begin(); + err = crypto_blkcipher_crt(desc.tfm)->encrypt(&desc, dst, src, nbytes); + kernel_fpu_end(); + return err; +} + +static int crypto_fpu_decrypt(struct blkcipher_desc *desc_in, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + int err; + struct crypto_fpu_ctx *ctx = crypto_blkcipher_ctx(desc_in->tfm); + struct crypto_blkcipher *child = ctx->child; + struct blkcipher_desc desc = { + .tfm = child, + .info = desc_in->info, + .flags = desc_in->flags, + }; + + kernel_fpu_begin(); + err = crypto_blkcipher_crt(desc.tfm)->decrypt(&desc, dst, src, nbytes); + kernel_fpu_end(); + return err; +} + +static int crypto_fpu_init_tfm(struct crypto_tfm *tfm) +{ + struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); + struct crypto_spawn *spawn = crypto_instance_ctx(inst); + struct crypto_fpu_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_blkcipher *cipher; + + cipher = crypto_spawn_blkcipher(spawn); + if (IS_ERR(cipher)) + return PTR_ERR(cipher); + + ctx->child = cipher; + return 0; +} + +static void crypto_fpu_exit_tfm(struct crypto_tfm *tfm) +{ + struct crypto_fpu_ctx *ctx = crypto_tfm_ctx(tfm); + crypto_free_blkcipher(ctx->child); +} + +static struct crypto_instance *crypto_fpu_alloc(struct rtattr **tb) +{ + struct crypto_instance *inst; + struct crypto_alg *alg; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); + if (err) + return ERR_PTR(err); + + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, + CRYPTO_ALG_TYPE_MASK); + if (IS_ERR(alg)) + return ERR_CAST(alg); + + inst = crypto_alloc_instance("fpu", alg); + if (IS_ERR(inst)) + goto out_put_alg; + + inst->alg.cra_flags = alg->cra_flags; + inst->alg.cra_priority = alg->cra_priority; + inst->alg.cra_blocksize = alg->cra_blocksize; + inst->alg.cra_alignmask = alg->cra_alignmask; + inst->alg.cra_type = alg->cra_type; + inst->alg.cra_blkcipher.ivsize = alg->cra_blkcipher.ivsize; + inst->alg.cra_blkcipher.min_keysize = alg->cra_blkcipher.min_keysize; + inst->alg.cra_blkcipher.max_keysize = alg->cra_blkcipher.max_keysize; + inst->alg.cra_ctxsize = sizeof(struct crypto_fpu_ctx); + inst->alg.cra_init = crypto_fpu_init_tfm; + inst->alg.cra_exit = crypto_fpu_exit_tfm; + inst->alg.cra_blkcipher.setkey = crypto_fpu_setkey; + inst->alg.cra_blkcipher.encrypt = crypto_fpu_encrypt; + inst->alg.cra_blkcipher.decrypt = crypto_fpu_decrypt; + +out_put_alg: + crypto_mod_put(alg); + return inst; +} + +static void crypto_fpu_free(struct crypto_instance *inst) +{ + crypto_drop_spawn(crypto_instance_ctx(inst)); + kfree(inst); +} + +static struct crypto_template crypto_fpu_tmpl = { + .name = "fpu", + .alloc = crypto_fpu_alloc, + .free = crypto_fpu_free, + .module = THIS_MODULE, +}; + +static int __init crypto_fpu_module_init(void) +{ + return crypto_register_template(&crypto_fpu_tmpl); +} + +static void __exit crypto_fpu_module_exit(void) +{ + crypto_unregister_template(&crypto_fpu_tmpl); +} + +module_init(crypto_fpu_module_init); +module_exit(crypto_fpu_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("FPU block cipher wrapper"); |