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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-10 18:20:42 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-10 18:20:42 (GMT) |
commit | f6bccf695431da0e9bd773550ae91b8cb9ffb227 (patch) | |
tree | ff81689bd9bf849b4827da6fbd69fce471842057 /include/crypto/rng.h | |
parent | 3af73d392c9c414ca527bab9c5d4c2a97698acbd (diff) | |
parent | a0f000ec9b61b99111757df138b11144236fc59b (diff) | |
download | linux-f6bccf695431da0e9bd773550ae91b8cb9ffb227.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: skcipher - Use RNG interface instead of get_random_bytes
crypto: rng - RNG interface and implementation
crypto: api - Add fips_enable flag
crypto: skcipher - Move IV generators into their own modules
crypto: cryptomgr - Test ciphers using ECB
crypto: api - Use test infrastructure
crypto: cryptomgr - Add test infrastructure
crypto: tcrypt - Add alg_test interface
crypto: tcrypt - Abort and only log if there is an error
crypto: crc32c - Use Intel CRC32 instruction
crypto: tcrypt - Avoid using contiguous pages
crypto: api - Display larval objects properly
crypto: api - Export crypto_alg_lookup instead of __crypto_alg_lookup
crypto: Kconfig - Replace leading spaces with tabs
Diffstat (limited to 'include/crypto/rng.h')
-rw-r--r-- | include/crypto/rng.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/crypto/rng.h b/include/crypto/rng.h new file mode 100644 index 0000000..c93f9b9 --- /dev/null +++ b/include/crypto/rng.h @@ -0,0 +1,75 @@ +/* + * RNG: Random Number Generator algorithms under the crypto API + * + * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.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. + * + */ + +#ifndef _CRYPTO_RNG_H +#define _CRYPTO_RNG_H + +#include <linux/crypto.h> + +extern struct crypto_rng *crypto_default_rng; + +int crypto_get_default_rng(void); +void crypto_put_default_rng(void); + +static inline struct crypto_rng *__crypto_rng_cast(struct crypto_tfm *tfm) +{ + return (struct crypto_rng *)tfm; +} + +static inline struct crypto_rng *crypto_alloc_rng(const char *alg_name, + u32 type, u32 mask) +{ + type &= ~CRYPTO_ALG_TYPE_MASK; + type |= CRYPTO_ALG_TYPE_RNG; + mask |= CRYPTO_ALG_TYPE_MASK; + + return __crypto_rng_cast(crypto_alloc_base(alg_name, type, mask)); +} + +static inline struct crypto_tfm *crypto_rng_tfm(struct crypto_rng *tfm) +{ + return &tfm->base; +} + +static inline struct rng_alg *crypto_rng_alg(struct crypto_rng *tfm) +{ + return &crypto_rng_tfm(tfm)->__crt_alg->cra_rng; +} + +static inline struct rng_tfm *crypto_rng_crt(struct crypto_rng *tfm) +{ + return &crypto_rng_tfm(tfm)->crt_rng; +} + +static inline void crypto_free_rng(struct crypto_rng *tfm) +{ + crypto_free_tfm(crypto_rng_tfm(tfm)); +} + +static inline int crypto_rng_get_bytes(struct crypto_rng *tfm, + u8 *rdata, unsigned int dlen) +{ + return crypto_rng_crt(tfm)->rng_gen_random(tfm, rdata, dlen); +} + +static inline int crypto_rng_reset(struct crypto_rng *tfm, + u8 *seed, unsigned int slen) +{ + return crypto_rng_crt(tfm)->rng_reset(tfm, seed, slen); +} + +static inline int crypto_rng_seedsize(struct crypto_rng *tfm) +{ + return crypto_rng_alg(tfm)->seedsize; +} + +#endif |