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| author | Neil Horman <nhorman@tuxdriver.com> | 2008-07-07 22:41:31 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-07-10 20:35:18 +0800 |
| commit | 0548e8a92c3eece837209ec1ba6df1784c0e2eea (patch) | |
| tree | 69630d99115f5b91b0a27d5811f04b977443d5e3 /crypto/prng.h | |
| parent | 1731228ac6792c28eab91c054501b4876a2f580e (diff) | |
| download | linux-crypto-0548e8a92c3eece837209ec1ba6df1784c0e2eea.tar.gz linux-crypto-0548e8a92c3eece837209ec1ba6df1784c0e2eea.zip | |
crypto: prng - Deterministic CPRNG
This patch adds a cryptographic pseudo-random number generator
based on CTR(AES-128). It is meant to be used in cases where a
deterministic CPRNG is required.
One of the first applications will be as an input in the IPsec IV
generation process.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | crypto/prng.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/crypto/prng.h b/crypto/prng.h new file mode 100644 index 00000000..1ac9be50 --- /dev/null +++ b/crypto/prng.h @@ -0,0 +1,27 @@ +/* + * PRNG: Pseudo Random Number Generator + * + * (C) 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 + * any later version. + * + * + */ + +#ifndef _PRNG_H_ +#define _PRNG_H_ +struct prng_context; + +int get_prng_bytes(char *buf, int nbytes, struct prng_context *ctx); +struct prng_context *alloc_prng_context(void); +int reset_prng_context(struct prng_context *ctx, + unsigned char *key, unsigned char *iv, + unsigned char *V, + unsigned char *DT); +void free_prng_context(struct prng_context *ctx); + +#endif + |