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48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
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* Block chaining cipher operations.
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*
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* Generic encrypt/decrypt wrapper for ciphers, handles operations across
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* multiple page boundaries by using temporary blocks. In user context,
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* the kernel is given a chance to schedule us once per page.
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*
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* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
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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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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <crypto/algapi.h>
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#include "internal.h"
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static unsigned crypto_blkcipher_ctxsize(struct crypto_alg *alg,
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u32 type, u32 mask)
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{
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return alg->cra_ctxsize;
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}
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static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
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{
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struct blkcipher_tfm *crt = &tfm->crt_blkcipher;
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struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
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BUG_ON((mask & CRYPTO_ALG_TYPE_MASK) != CRYPTO_ALG_TYPE_MASK);
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crt->setkey = alg->setkey;
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crt->encrypt = alg->encrypt;
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crt->decrypt = alg->decrypt;
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return 0;
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}
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const struct crypto_type crypto_blkcipher_type = {
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.ctxsize = crypto_blkcipher_ctxsize,
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.init = crypto_init_blkcipher_ops,
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};
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