724 lines
19 KiB
C
724 lines
19 KiB
C
/*
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* Support for Intel AES-NI instructions. This file contains glue
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* code, the real AES implementation is in intel-aes_asm.S.
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*
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* Copyright (C) 2008, Intel Corp.
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* Author: Huang Ying <ying.huang@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/hardirq.h>
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#include <linux/types.h>
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#include <linux/crypto.h>
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#include <linux/err.h>
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#include <crypto/algapi.h>
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#include <crypto/aes.h>
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#include <crypto/cryptd.h>
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#include <asm/i387.h>
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#include <asm/aes.h>
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#if defined(CONFIG_CRYPTO_CTR) || defined(CONFIG_CRYPTO_CTR_MODULE)
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#define HAS_CTR
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#endif
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#if defined(CONFIG_CRYPTO_LRW) || defined(CONFIG_CRYPTO_LRW_MODULE)
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#define HAS_LRW
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#endif
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#if defined(CONFIG_CRYPTO_PCBC) || defined(CONFIG_CRYPTO_PCBC_MODULE)
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#define HAS_PCBC
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#endif
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#if defined(CONFIG_CRYPTO_XTS) || defined(CONFIG_CRYPTO_XTS_MODULE)
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#define HAS_XTS
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#endif
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struct async_aes_ctx {
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struct cryptd_ablkcipher *cryptd_tfm;
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};
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#define AESNI_ALIGN 16
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#define AES_BLOCK_MASK (~(AES_BLOCK_SIZE-1))
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asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
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unsigned int key_len);
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asmlinkage void aesni_enc(struct crypto_aes_ctx *ctx, u8 *out,
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const u8 *in);
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asmlinkage void aesni_dec(struct crypto_aes_ctx *ctx, u8 *out,
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const u8 *in);
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asmlinkage void aesni_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out,
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const u8 *in, unsigned int len);
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asmlinkage void aesni_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out,
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const u8 *in, unsigned int len);
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asmlinkage void aesni_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out,
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const u8 *in, unsigned int len, u8 *iv);
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asmlinkage void aesni_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out,
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const u8 *in, unsigned int len, u8 *iv);
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static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx)
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{
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unsigned long addr = (unsigned long)raw_ctx;
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unsigned long align = AESNI_ALIGN;
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if (align <= crypto_tfm_ctx_alignment())
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align = 1;
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return (struct crypto_aes_ctx *)ALIGN(addr, align);
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}
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static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx,
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const u8 *in_key, unsigned int key_len)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx);
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u32 *flags = &tfm->crt_flags;
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int err;
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if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 &&
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key_len != AES_KEYSIZE_256) {
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*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
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return -EINVAL;
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}
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if (!irq_fpu_usable())
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err = crypto_aes_expand_key(ctx, in_key, key_len);
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else {
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kernel_fpu_begin();
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err = aesni_set_key(ctx, in_key, key_len);
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kernel_fpu_end();
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}
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return err;
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}
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static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
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unsigned int key_len)
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{
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return aes_set_key_common(tfm, crypto_tfm_ctx(tfm), in_key, key_len);
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}
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static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm));
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if (!irq_fpu_usable())
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crypto_aes_encrypt_x86(ctx, dst, src);
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else {
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kernel_fpu_begin();
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aesni_enc(ctx, dst, src);
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kernel_fpu_end();
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}
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}
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static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm));
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if (!irq_fpu_usable())
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crypto_aes_decrypt_x86(ctx, dst, src);
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else {
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kernel_fpu_begin();
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aesni_dec(ctx, dst, src);
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kernel_fpu_end();
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}
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}
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static struct crypto_alg aesni_alg = {
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.cra_name = "aes",
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.cra_driver_name = "aes-aesni",
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.cra_priority = 300,
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.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_aes_ctx)+AESNI_ALIGN-1,
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(aesni_alg.cra_list),
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.cra_u = {
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.cipher = {
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.cia_min_keysize = AES_MIN_KEY_SIZE,
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.cia_max_keysize = AES_MAX_KEY_SIZE,
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.cia_setkey = aes_set_key,
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.cia_encrypt = aes_encrypt,
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.cia_decrypt = aes_decrypt
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}
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}
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};
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static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm));
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aesni_enc(ctx, dst, src);
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}
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static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm));
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aesni_dec(ctx, dst, src);
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}
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static struct crypto_alg __aesni_alg = {
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.cra_name = "__aes-aesni",
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.cra_driver_name = "__driver-aes-aesni",
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.cra_priority = 0,
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.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_aes_ctx)+AESNI_ALIGN-1,
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(__aesni_alg.cra_list),
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.cra_u = {
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.cipher = {
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.cia_min_keysize = AES_MIN_KEY_SIZE,
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.cia_max_keysize = AES_MAX_KEY_SIZE,
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.cia_setkey = aes_set_key,
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.cia_encrypt = __aes_encrypt,
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.cia_decrypt = __aes_decrypt
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}
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}
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};
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static int ecb_encrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm));
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struct blkcipher_walk walk;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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kernel_fpu_begin();
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while ((nbytes = walk.nbytes)) {
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aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
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nbytes & AES_BLOCK_MASK);
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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}
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kernel_fpu_end();
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return err;
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}
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static int ecb_decrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm));
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struct blkcipher_walk walk;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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kernel_fpu_begin();
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while ((nbytes = walk.nbytes)) {
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aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr,
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nbytes & AES_BLOCK_MASK);
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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}
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kernel_fpu_end();
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return err;
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}
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static struct crypto_alg blk_ecb_alg = {
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.cra_name = "__ecb-aes-aesni",
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.cra_driver_name = "__driver-ecb-aes-aesni",
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.cra_priority = 0,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_aes_ctx)+AESNI_ALIGN-1,
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.cra_alignmask = 0,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(blk_ecb_alg.cra_list),
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.cra_u = {
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.blkcipher = {
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.setkey = aes_set_key,
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.encrypt = ecb_encrypt,
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.decrypt = ecb_decrypt,
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},
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},
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};
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static int cbc_encrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm));
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struct blkcipher_walk walk;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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kernel_fpu_begin();
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while ((nbytes = walk.nbytes)) {
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aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
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nbytes & AES_BLOCK_MASK, walk.iv);
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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}
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kernel_fpu_end();
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return err;
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}
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static int cbc_decrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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{
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struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm));
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struct blkcipher_walk walk;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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kernel_fpu_begin();
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while ((nbytes = walk.nbytes)) {
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aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr,
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nbytes & AES_BLOCK_MASK, walk.iv);
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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}
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kernel_fpu_end();
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return err;
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}
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static struct crypto_alg blk_cbc_alg = {
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.cra_name = "__cbc-aes-aesni",
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.cra_driver_name = "__driver-cbc-aes-aesni",
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.cra_priority = 0,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_aes_ctx)+AESNI_ALIGN-1,
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.cra_alignmask = 0,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(blk_cbc_alg.cra_list),
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.cra_u = {
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.blkcipher = {
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.setkey = aes_set_key,
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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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};
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static int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key,
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unsigned int key_len)
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{
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struct async_aes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
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struct crypto_ablkcipher *child = &ctx->cryptd_tfm->base;
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int err;
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crypto_ablkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK);
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crypto_ablkcipher_set_flags(child, crypto_ablkcipher_get_flags(tfm)
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& CRYPTO_TFM_REQ_MASK);
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err = crypto_ablkcipher_setkey(child, key, key_len);
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crypto_ablkcipher_set_flags(tfm, crypto_ablkcipher_get_flags(child)
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& CRYPTO_TFM_RES_MASK);
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return err;
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}
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static int ablk_encrypt(struct ablkcipher_request *req)
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{
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struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
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struct async_aes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
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if (!irq_fpu_usable()) {
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struct ablkcipher_request *cryptd_req =
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ablkcipher_request_ctx(req);
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memcpy(cryptd_req, req, sizeof(*req));
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ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base);
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return crypto_ablkcipher_encrypt(cryptd_req);
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} else {
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struct blkcipher_desc desc;
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desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm);
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desc.info = req->info;
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desc.flags = 0;
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return crypto_blkcipher_crt(desc.tfm)->encrypt(
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&desc, req->dst, req->src, req->nbytes);
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}
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}
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static int ablk_decrypt(struct ablkcipher_request *req)
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{
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struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
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struct async_aes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
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if (!irq_fpu_usable()) {
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struct ablkcipher_request *cryptd_req =
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ablkcipher_request_ctx(req);
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memcpy(cryptd_req, req, sizeof(*req));
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ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base);
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return crypto_ablkcipher_decrypt(cryptd_req);
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} else {
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struct blkcipher_desc desc;
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desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm);
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desc.info = req->info;
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desc.flags = 0;
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return crypto_blkcipher_crt(desc.tfm)->decrypt(
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&desc, req->dst, req->src, req->nbytes);
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}
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}
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static void ablk_exit(struct crypto_tfm *tfm)
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{
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struct async_aes_ctx *ctx = crypto_tfm_ctx(tfm);
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cryptd_free_ablkcipher(ctx->cryptd_tfm);
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}
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static void ablk_init_common(struct crypto_tfm *tfm,
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struct cryptd_ablkcipher *cryptd_tfm)
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{
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struct async_aes_ctx *ctx = crypto_tfm_ctx(tfm);
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ctx->cryptd_tfm = cryptd_tfm;
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tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request) +
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crypto_ablkcipher_reqsize(&cryptd_tfm->base);
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}
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static int ablk_ecb_init(struct crypto_tfm *tfm)
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{
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struct cryptd_ablkcipher *cryptd_tfm;
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cryptd_tfm = cryptd_alloc_ablkcipher("__driver-ecb-aes-aesni", 0, 0);
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if (IS_ERR(cryptd_tfm))
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return PTR_ERR(cryptd_tfm);
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ablk_init_common(tfm, cryptd_tfm);
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return 0;
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}
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static struct crypto_alg ablk_ecb_alg = {
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.cra_name = "ecb(aes)",
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.cra_driver_name = "ecb-aes-aesni",
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.cra_priority = 400,
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.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct async_aes_ctx),
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.cra_alignmask = 0,
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.cra_type = &crypto_ablkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(ablk_ecb_alg.cra_list),
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.cra_init = ablk_ecb_init,
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.cra_exit = ablk_exit,
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.cra_u = {
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.ablkcipher = {
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.setkey = ablk_set_key,
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.encrypt = ablk_encrypt,
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.decrypt = ablk_decrypt,
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},
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},
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};
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static int ablk_cbc_init(struct crypto_tfm *tfm)
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{
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struct cryptd_ablkcipher *cryptd_tfm;
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cryptd_tfm = cryptd_alloc_ablkcipher("__driver-cbc-aes-aesni", 0, 0);
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if (IS_ERR(cryptd_tfm))
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return PTR_ERR(cryptd_tfm);
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ablk_init_common(tfm, cryptd_tfm);
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return 0;
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}
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static struct crypto_alg ablk_cbc_alg = {
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.cra_name = "cbc(aes)",
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.cra_driver_name = "cbc-aes-aesni",
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.cra_priority = 400,
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.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct async_aes_ctx),
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.cra_alignmask = 0,
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.cra_type = &crypto_ablkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(ablk_cbc_alg.cra_list),
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.cra_init = ablk_cbc_init,
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.cra_exit = ablk_exit,
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.cra_u = {
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.ablkcipher = {
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.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,
|
|
},
|
|
},
|
|
};
|
|
|
|
#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;
|
|
|
|
if (!cpu_has_aes) {
|
|
printk(KERN_INFO "Intel AES-NI instructions are not detected.\n");
|
|
return -ENODEV;
|
|
}
|
|
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)))
|
|
goto blk_cbc_err;
|
|
if ((err = crypto_register_alg(&ablk_ecb_alg)))
|
|
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:
|
|
crypto_unregister_alg(&blk_cbc_alg);
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
module_init(aesni_init);
|
|
module_exit(aesni_exit);
|
|
|
|
MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("aes");
|