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* Cryptographic API.
* Copyright (c) 2002 James Morris <>
* 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 <linux/crypto.h>
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/kmod.h>
#include <asm/kmap_types.h>
extern enum km_type crypto_km_types[];
static inline enum km_type crypto_kmap_type(int out)
return crypto_km_types[(in_softirq() ? 2 : 0) + out];
static inline void *crypto_kmap(struct page *page, int out)
return kmap_atomic(page, crypto_kmap_type(out));
static inline void crypto_kunmap(void *vaddr, int out)
kunmap_atomic(vaddr, crypto_kmap_type(out));
static inline void crypto_yield(struct crypto_tfm *tfm)
if (!in_atomic())
static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
return (void *)&tfm[1];
struct crypto_alg *crypto_alg_lookup(const char *name);
/* A far more intelligent version of this is planned. For now, just
* try an exact match on the name of the algorithm. */
static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
return try_then_request_module(crypto_alg_lookup(name), name);
int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
void crypto_free_hmac_block(struct crypto_tfm *tfm);
static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
return 0;
static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
{ }
void __init crypto_init_proc(void);
static inline void crypto_init_proc(void)
{ }
int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
int crypto_init_digest_ops(struct crypto_tfm *tfm);
int crypto_init_cipher_ops(struct crypto_tfm *tfm);
int crypto_init_compress_ops(struct crypto_tfm *tfm);
void crypto_exit_digest_ops(struct crypto_tfm *tfm);
void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
void crypto_exit_compress_ops(struct crypto_tfm *tfm);
#endif /* _CRYPTO_INTERNAL_H */
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