5cde0af2a9
This patch adds the new type of block ciphers. Unlike current cipher algorithms which operate on a single block at a time, block ciphers operate on an arbitrarily long linear area of data. As it is block-based, it will skip any data remaining at the end which cannot form a block. The block cipher has one major difference when compared to the existing block cipher implementation. The sg walking is now performed by the algorithm rather than the cipher mid-layer. This is needed for drivers that directly support sg lists. It also improves performance for all algorithms as it reduces the total number of indirect calls by one. In future the existing cipher algorithm will be converted to only have a single-block interface. This will be done after all existing users have switched over to the new block cipher type. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
762 lines
22 KiB
C
762 lines
22 KiB
C
/*
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* Scatterlist Cryptographic API.
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*
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
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* Copyright (c) 2002 David S. Miller (davem@redhat.com)
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* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
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*
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* Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
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* and Nettle, by Niels Möller.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef _LINUX_CRYPTO_H
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#define _LINUX_CRYPTO_H
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#include <asm/atomic.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/uaccess.h>
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/*
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* Algorithm masks and types.
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*/
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#define CRYPTO_ALG_TYPE_MASK 0x0000000f
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#define CRYPTO_ALG_TYPE_CIPHER 0x00000001
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#define CRYPTO_ALG_TYPE_DIGEST 0x00000002
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#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000003
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#define CRYPTO_ALG_TYPE_COMPRESS 0x00000004
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#define CRYPTO_ALG_LARVAL 0x00000010
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#define CRYPTO_ALG_DEAD 0x00000020
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#define CRYPTO_ALG_DYING 0x00000040
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#define CRYPTO_ALG_ASYNC 0x00000080
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/*
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* Transform masks and values (for crt_flags).
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*/
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#define CRYPTO_TFM_MODE_MASK 0x000000ff
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#define CRYPTO_TFM_REQ_MASK 0x000fff00
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#define CRYPTO_TFM_RES_MASK 0xfff00000
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#define CRYPTO_TFM_MODE_ECB 0x00000001
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#define CRYPTO_TFM_MODE_CBC 0x00000002
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#define CRYPTO_TFM_MODE_CFB 0x00000004
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#define CRYPTO_TFM_MODE_CTR 0x00000008
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#define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
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#define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
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#define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
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#define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
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#define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
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#define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
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#define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
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/*
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* Miscellaneous stuff.
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*/
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#define CRYPTO_UNSPEC 0
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#define CRYPTO_MAX_ALG_NAME 64
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#define CRYPTO_DIR_ENCRYPT 1
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#define CRYPTO_DIR_DECRYPT 0
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/*
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* The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
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* declaration) is used to ensure that the crypto_tfm context structure is
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* aligned correctly for the given architecture so that there are no alignment
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* faults for C data types. In particular, this is required on platforms such
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* as arm where pointers are 32-bit aligned but there are data types such as
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* u64 which require 64-bit alignment.
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*/
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#if defined(ARCH_KMALLOC_MINALIGN)
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#define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
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#elif defined(ARCH_SLAB_MINALIGN)
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#define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
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#endif
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#ifdef CRYPTO_MINALIGN
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#define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
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#else
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#define CRYPTO_MINALIGN_ATTR
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#endif
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struct scatterlist;
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struct crypto_blkcipher;
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struct crypto_tfm;
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struct crypto_type;
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struct blkcipher_desc {
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struct crypto_blkcipher *tfm;
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void *info;
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u32 flags;
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};
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struct cipher_desc {
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struct crypto_tfm *tfm;
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void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
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unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
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const u8 *src, unsigned int nbytes);
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void *info;
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};
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/*
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* Algorithms: modular crypto algorithm implementations, managed
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* via crypto_register_alg() and crypto_unregister_alg().
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*/
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struct blkcipher_alg {
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int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
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unsigned int keylen);
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int (*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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int (*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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unsigned int min_keysize;
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unsigned int max_keysize;
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unsigned int ivsize;
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};
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struct cipher_alg {
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unsigned int cia_min_keysize;
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unsigned int cia_max_keysize;
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int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
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unsigned int keylen);
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void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
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void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
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unsigned int (*cia_encrypt_ecb)(const struct cipher_desc *desc,
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u8 *dst, const u8 *src,
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unsigned int nbytes);
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unsigned int (*cia_decrypt_ecb)(const struct cipher_desc *desc,
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u8 *dst, const u8 *src,
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unsigned int nbytes);
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unsigned int (*cia_encrypt_cbc)(const struct cipher_desc *desc,
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u8 *dst, const u8 *src,
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unsigned int nbytes);
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unsigned int (*cia_decrypt_cbc)(const struct cipher_desc *desc,
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u8 *dst, const u8 *src,
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unsigned int nbytes);
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};
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struct digest_alg {
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unsigned int dia_digestsize;
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void (*dia_init)(struct crypto_tfm *tfm);
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void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
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unsigned int len);
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void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
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int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
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unsigned int keylen);
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};
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struct compress_alg {
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int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
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unsigned int slen, u8 *dst, unsigned int *dlen);
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int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
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unsigned int slen, u8 *dst, unsigned int *dlen);
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};
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#define cra_blkcipher cra_u.blkcipher
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#define cra_cipher cra_u.cipher
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#define cra_digest cra_u.digest
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#define cra_compress cra_u.compress
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struct crypto_alg {
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struct list_head cra_list;
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struct list_head cra_users;
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u32 cra_flags;
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unsigned int cra_blocksize;
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unsigned int cra_ctxsize;
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unsigned int cra_alignmask;
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int cra_priority;
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atomic_t cra_refcnt;
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char cra_name[CRYPTO_MAX_ALG_NAME];
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char cra_driver_name[CRYPTO_MAX_ALG_NAME];
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const struct crypto_type *cra_type;
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union {
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struct blkcipher_alg blkcipher;
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struct cipher_alg cipher;
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struct digest_alg digest;
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struct compress_alg compress;
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} cra_u;
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int (*cra_init)(struct crypto_tfm *tfm);
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void (*cra_exit)(struct crypto_tfm *tfm);
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void (*cra_destroy)(struct crypto_alg *alg);
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struct module *cra_module;
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};
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/*
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* Algorithm registration interface.
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*/
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int crypto_register_alg(struct crypto_alg *alg);
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int crypto_unregister_alg(struct crypto_alg *alg);
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/*
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* Algorithm query interface.
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*/
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#ifdef CONFIG_CRYPTO
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int crypto_alg_available(const char *name, u32 flags);
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#else
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static inline int crypto_alg_available(const char *name, u32 flags)
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{
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return 0;
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}
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#endif
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/*
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* Transforms: user-instantiated objects which encapsulate algorithms
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* and core processing logic. Managed via crypto_alloc_*() and
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* crypto_free_*(), as well as the various helpers below.
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*/
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struct blkcipher_tfm {
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void *iv;
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int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
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unsigned int keylen);
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int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
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struct scatterlist *src, unsigned int nbytes);
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int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
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struct scatterlist *src, unsigned int nbytes);
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};
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struct cipher_tfm {
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void *cit_iv;
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unsigned int cit_ivsize;
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u32 cit_mode;
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int (*cit_setkey)(struct crypto_tfm *tfm,
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const u8 *key, unsigned int keylen);
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int (*cit_encrypt)(struct crypto_tfm *tfm,
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struct scatterlist *dst,
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struct scatterlist *src,
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unsigned int nbytes);
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int (*cit_encrypt_iv)(struct crypto_tfm *tfm,
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struct scatterlist *dst,
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struct scatterlist *src,
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unsigned int nbytes, u8 *iv);
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int (*cit_decrypt)(struct crypto_tfm *tfm,
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struct scatterlist *dst,
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struct scatterlist *src,
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unsigned int nbytes);
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int (*cit_decrypt_iv)(struct crypto_tfm *tfm,
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struct scatterlist *dst,
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struct scatterlist *src,
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unsigned int nbytes, u8 *iv);
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void (*cit_xor_block)(u8 *dst, const u8 *src);
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void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
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void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
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};
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struct digest_tfm {
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void (*dit_init)(struct crypto_tfm *tfm);
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void (*dit_update)(struct crypto_tfm *tfm,
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struct scatterlist *sg, unsigned int nsg);
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void (*dit_final)(struct crypto_tfm *tfm, u8 *out);
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void (*dit_digest)(struct crypto_tfm *tfm, struct scatterlist *sg,
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unsigned int nsg, u8 *out);
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int (*dit_setkey)(struct crypto_tfm *tfm,
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const u8 *key, unsigned int keylen);
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#ifdef CONFIG_CRYPTO_HMAC
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void *dit_hmac_block;
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#endif
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};
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struct compress_tfm {
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int (*cot_compress)(struct crypto_tfm *tfm,
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const u8 *src, unsigned int slen,
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u8 *dst, unsigned int *dlen);
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int (*cot_decompress)(struct crypto_tfm *tfm,
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const u8 *src, unsigned int slen,
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u8 *dst, unsigned int *dlen);
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};
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#define crt_blkcipher crt_u.blkcipher
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#define crt_cipher crt_u.cipher
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#define crt_digest crt_u.digest
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#define crt_compress crt_u.compress
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struct crypto_tfm {
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u32 crt_flags;
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union {
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struct blkcipher_tfm blkcipher;
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struct cipher_tfm cipher;
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struct digest_tfm digest;
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struct compress_tfm compress;
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} crt_u;
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struct crypto_alg *__crt_alg;
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void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
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};
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#define crypto_cipher crypto_tfm
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struct crypto_blkcipher {
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struct crypto_tfm base;
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};
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enum {
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CRYPTOA_UNSPEC,
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CRYPTOA_ALG,
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};
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struct crypto_attr_alg {
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char name[CRYPTO_MAX_ALG_NAME];
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};
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/*
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* Transform user interface.
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*/
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struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
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struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
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void crypto_free_tfm(struct crypto_tfm *tfm);
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/*
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* Transform helpers which query the underlying algorithm.
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*/
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static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
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{
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return tfm->__crt_alg->cra_name;
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}
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static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
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{
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return tfm->__crt_alg->cra_driver_name;
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}
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static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
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{
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return tfm->__crt_alg->cra_priority;
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}
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static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
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{
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return module_name(tfm->__crt_alg->cra_module);
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}
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static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
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{
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return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
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}
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static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
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{
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BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
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return tfm->__crt_alg->cra_cipher.cia_min_keysize;
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}
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static inline unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
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{
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BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
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return tfm->__crt_alg->cra_cipher.cia_max_keysize;
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}
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static inline unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm)
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{
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BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
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return tfm->crt_cipher.cit_ivsize;
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}
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static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
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{
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return tfm->__crt_alg->cra_blocksize;
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}
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static inline unsigned int crypto_tfm_alg_digestsize(struct crypto_tfm *tfm)
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{
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BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
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return tfm->__crt_alg->cra_digest.dia_digestsize;
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}
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static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
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{
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return tfm->__crt_alg->cra_alignmask;
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}
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static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
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{
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return tfm->crt_flags;
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}
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static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
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{
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tfm->crt_flags |= flags;
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}
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static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
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{
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tfm->crt_flags &= ~flags;
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}
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static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
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{
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return tfm->__crt_ctx;
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}
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static inline unsigned int crypto_tfm_ctx_alignment(void)
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{
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struct crypto_tfm *tfm;
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return __alignof__(tfm->__crt_ctx);
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}
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/*
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* API wrappers.
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*/
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static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
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struct crypto_tfm *tfm)
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{
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return (struct crypto_blkcipher *)tfm;
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}
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static inline struct crypto_blkcipher *crypto_blkcipher_cast(
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struct crypto_tfm *tfm)
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{
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BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
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return __crypto_blkcipher_cast(tfm);
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}
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static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
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const char *alg_name, u32 type, u32 mask)
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{
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type &= ~CRYPTO_ALG_TYPE_MASK;
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type |= CRYPTO_ALG_TYPE_BLKCIPHER;
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mask |= CRYPTO_ALG_TYPE_MASK;
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return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
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}
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static inline struct crypto_tfm *crypto_blkcipher_tfm(
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struct crypto_blkcipher *tfm)
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{
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return &tfm->base;
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}
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static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
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{
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crypto_free_tfm(crypto_blkcipher_tfm(tfm));
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}
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static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
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{
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return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
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}
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static inline struct blkcipher_tfm *crypto_blkcipher_crt(
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struct crypto_blkcipher *tfm)
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{
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return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
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}
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static inline struct blkcipher_alg *crypto_blkcipher_alg(
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struct crypto_blkcipher *tfm)
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{
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return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
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}
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static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
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{
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return crypto_blkcipher_alg(tfm)->ivsize;
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}
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static inline unsigned int crypto_blkcipher_blocksize(
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struct crypto_blkcipher *tfm)
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{
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return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
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}
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static inline unsigned int crypto_blkcipher_alignmask(
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struct crypto_blkcipher *tfm)
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{
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return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
|
|
}
|
|
|
|
static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
|
|
{
|
|
return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
|
|
}
|
|
|
|
static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
|
|
u32 flags)
|
|
{
|
|
crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
|
|
}
|
|
|
|
static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
|
|
u32 flags)
|
|
{
|
|
crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
|
|
}
|
|
|
|
static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
|
|
key, keylen);
|
|
}
|
|
|
|
static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes)
|
|
{
|
|
desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
|
|
return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
|
|
}
|
|
|
|
static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes)
|
|
{
|
|
return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
|
|
}
|
|
|
|
static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes)
|
|
{
|
|
desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
|
|
return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
|
|
}
|
|
|
|
static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes)
|
|
{
|
|
return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
|
|
}
|
|
|
|
static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
|
|
const u8 *src, unsigned int len)
|
|
{
|
|
memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
|
|
}
|
|
|
|
static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
|
|
u8 *dst, unsigned int len)
|
|
{
|
|
memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
|
|
}
|
|
|
|
static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
|
|
{
|
|
return (struct crypto_cipher *)tfm;
|
|
}
|
|
|
|
static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
return __crypto_cipher_cast(tfm);
|
|
}
|
|
|
|
static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
|
|
u32 type, u32 mask)
|
|
{
|
|
type &= ~CRYPTO_ALG_TYPE_MASK;
|
|
type |= CRYPTO_ALG_TYPE_CIPHER;
|
|
mask |= CRYPTO_ALG_TYPE_MASK;
|
|
|
|
return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
|
|
}
|
|
|
|
static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
|
|
{
|
|
return tfm;
|
|
}
|
|
|
|
static inline void crypto_free_cipher(struct crypto_cipher *tfm)
|
|
{
|
|
crypto_free_tfm(crypto_cipher_tfm(tfm));
|
|
}
|
|
|
|
static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
|
|
{
|
|
return &crypto_cipher_tfm(tfm)->crt_cipher;
|
|
}
|
|
|
|
static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
|
|
{
|
|
return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
|
|
}
|
|
|
|
static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
|
|
{
|
|
return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
|
|
}
|
|
|
|
static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
|
|
{
|
|
return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
|
|
}
|
|
|
|
static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
|
|
u32 flags)
|
|
{
|
|
crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
|
|
}
|
|
|
|
static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
|
|
u32 flags)
|
|
{
|
|
crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
|
|
}
|
|
|
|
static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
|
|
u8 *dst, const u8 *src)
|
|
{
|
|
crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
|
|
dst, src);
|
|
}
|
|
|
|
static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
|
|
u8 *dst, const u8 *src)
|
|
{
|
|
crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
|
|
dst, src);
|
|
}
|
|
|
|
static inline void crypto_digest_init(struct crypto_tfm *tfm)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
|
|
tfm->crt_digest.dit_init(tfm);
|
|
}
|
|
|
|
static inline void crypto_digest_update(struct crypto_tfm *tfm,
|
|
struct scatterlist *sg,
|
|
unsigned int nsg)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
|
|
tfm->crt_digest.dit_update(tfm, sg, nsg);
|
|
}
|
|
|
|
static inline void crypto_digest_final(struct crypto_tfm *tfm, u8 *out)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
|
|
tfm->crt_digest.dit_final(tfm, out);
|
|
}
|
|
|
|
static inline void crypto_digest_digest(struct crypto_tfm *tfm,
|
|
struct scatterlist *sg,
|
|
unsigned int nsg, u8 *out)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
|
|
tfm->crt_digest.dit_digest(tfm, sg, nsg, out);
|
|
}
|
|
|
|
static inline int crypto_digest_setkey(struct crypto_tfm *tfm,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
|
|
return tfm->crt_digest.dit_setkey(tfm, key, keylen);
|
|
}
|
|
|
|
static inline int crypto_cipher_setkey(struct crypto_tfm *tfm,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
return tfm->crt_cipher.cit_setkey(tfm, key, keylen);
|
|
}
|
|
|
|
static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
|
|
}
|
|
|
|
static inline int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes, u8 *iv)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
return tfm->crt_cipher.cit_encrypt_iv(tfm, dst, src, nbytes, iv);
|
|
}
|
|
|
|
static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
|
|
}
|
|
|
|
static inline int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src,
|
|
unsigned int nbytes, u8 *iv)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
return tfm->crt_cipher.cit_decrypt_iv(tfm, dst, src, nbytes, iv);
|
|
}
|
|
|
|
static inline void crypto_cipher_set_iv(struct crypto_tfm *tfm,
|
|
const u8 *src, unsigned int len)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
memcpy(tfm->crt_cipher.cit_iv, src, len);
|
|
}
|
|
|
|
static inline void crypto_cipher_get_iv(struct crypto_tfm *tfm,
|
|
u8 *dst, unsigned int len)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
|
|
memcpy(dst, tfm->crt_cipher.cit_iv, len);
|
|
}
|
|
|
|
static inline int crypto_comp_compress(struct crypto_tfm *tfm,
|
|
const u8 *src, unsigned int slen,
|
|
u8 *dst, unsigned int *dlen)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_COMPRESS);
|
|
return tfm->crt_compress.cot_compress(tfm, src, slen, dst, dlen);
|
|
}
|
|
|
|
static inline int crypto_comp_decompress(struct crypto_tfm *tfm,
|
|
const u8 *src, unsigned int slen,
|
|
u8 *dst, unsigned int *dlen)
|
|
{
|
|
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_COMPRESS);
|
|
return tfm->crt_compress.cot_decompress(tfm, src, slen, dst, dlen);
|
|
}
|
|
|
|
/*
|
|
* HMAC support.
|
|
*/
|
|
#ifdef CONFIG_CRYPTO_HMAC
|
|
void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen);
|
|
void crypto_hmac_update(struct crypto_tfm *tfm,
|
|
struct scatterlist *sg, unsigned int nsg);
|
|
void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key,
|
|
unsigned int *keylen, u8 *out);
|
|
void crypto_hmac(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen,
|
|
struct scatterlist *sg, unsigned int nsg, u8 *out);
|
|
#endif /* CONFIG_CRYPTO_HMAC */
|
|
|
|
#endif /* _LINUX_CRYPTO_H */
|
|
|