diff options
| -rw-r--r-- | crypto/rng.c | 57 | ||||
| -rw-r--r-- | include/crypto/internal/rng.h | 3 | ||||
| -rw-r--r-- | include/crypto/rng.h | 10 | ||||
| -rw-r--r-- | include/linux/crypto.h | 30 |
4 files changed, 8 insertions, 92 deletions
diff --git a/crypto/rng.c b/crypto/rng.c index e98ce1ca527d..055e276427b1 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -4,6 +4,7 @@ * RNG operations. * * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com> + * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au> * * 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 @@ -36,39 +37,6 @@ static inline struct crypto_rng *__crypto_rng_cast(struct crypto_tfm *tfm) return container_of(tfm, struct crypto_rng, base); } -static inline struct old_rng_alg *crypto_old_rng_alg(struct crypto_rng *tfm) -{ - return &crypto_rng_tfm(tfm)->__crt_alg->cra_rng; -} - -static int generate(struct crypto_rng *tfm, const u8 *src, unsigned int slen, - u8 *dst, unsigned int dlen) -{ - return crypto_old_rng_alg(tfm)->rng_make_random(tfm, dst, dlen); -} - -static int rngapi_reset(struct crypto_rng *tfm, const u8 *seed, - unsigned int slen) -{ - u8 *buf = NULL; - u8 *src = (u8 *)seed; - int err; - - if (slen) { - buf = kmalloc(slen, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - memcpy(buf, seed, slen); - src = buf; - } - - err = crypto_old_rng_alg(tfm)->rng_reset(tfm, src, slen); - - kzfree(buf); - return err; -} - int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen) { u8 *buf = NULL; @@ -83,7 +51,7 @@ int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen) seed = buf; } - err = tfm->seed(tfm, seed, slen); + err = crypto_rng_alg(tfm)->seed(tfm, seed, slen); kfree(buf); return err; @@ -92,21 +60,6 @@ EXPORT_SYMBOL_GPL(crypto_rng_reset); static int crypto_rng_init_tfm(struct crypto_tfm *tfm) { - struct crypto_rng *rng = __crypto_rng_cast(tfm); - struct rng_alg *alg = crypto_rng_alg(rng); - struct old_rng_alg *oalg = crypto_old_rng_alg(rng); - - if (oalg->rng_make_random) { - rng->generate = generate; - rng->seed = rngapi_reset; - rng->seedsize = oalg->seedsize; - return 0; - } - - rng->generate = alg->generate; - rng->seed = alg->seed; - rng->seedsize = alg->seedsize; - return 0; } @@ -114,8 +67,7 @@ static unsigned int seedsize(struct crypto_alg *alg) { struct rng_alg *ralg = container_of(alg, struct rng_alg, base); - return alg->cra_rng.rng_make_random ? - alg->cra_rng.seedsize : ralg->seedsize; + return ralg->seedsize; } #ifdef CONFIG_NET @@ -150,7 +102,7 @@ static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg) seq_printf(m, "seedsize : %u\n", seedsize(alg)); } -const struct crypto_type crypto_rng_type = { +static const struct crypto_type crypto_rng_type = { .extsize = crypto_alg_extsize, .init_tfm = crypto_rng_init_tfm, #ifdef CONFIG_PROC_FS @@ -162,7 +114,6 @@ const struct crypto_type crypto_rng_type = { .type = CRYPTO_ALG_TYPE_RNG, .tfmsize = offsetof(struct crypto_rng, base), }; -EXPORT_SYMBOL_GPL(crypto_rng_type); struct crypto_rng *crypto_alloc_rng(const char *alg_name, u32 type, u32 mask) { diff --git a/include/crypto/internal/rng.h b/include/crypto/internal/rng.h index 2c9a865c66e2..263f1a5eebc7 100644 --- a/include/crypto/internal/rng.h +++ b/include/crypto/internal/rng.h @@ -2,6 +2,7 @@ * RNG: Random Number Generator algorithms under the crypto API * * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com> + * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au> * * 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 @@ -16,8 +17,6 @@ #include <crypto/algapi.h> #include <crypto/rng.h> -extern const struct crypto_type crypto_rng_type; - int crypto_register_rng(struct rng_alg *alg); void crypto_unregister_rng(struct rng_alg *alg); int crypto_register_rngs(struct rng_alg *algs, int count); diff --git a/include/crypto/rng.h b/include/crypto/rng.h index cc22e52a129a..c5d4684429f5 100644 --- a/include/crypto/rng.h +++ b/include/crypto/rng.h @@ -2,6 +2,7 @@ * RNG: Random Number Generator algorithms under the crypto API * * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com> + * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au> * * 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 @@ -56,11 +57,6 @@ struct rng_alg { }; struct crypto_rng { - int (*generate)(struct crypto_rng *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int dlen); - int (*seed)(struct crypto_rng *tfm, const u8 *seed, unsigned int slen); - unsigned int seedsize; struct crypto_tfm base; }; @@ -144,7 +140,7 @@ static inline int crypto_rng_generate(struct crypto_rng *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int dlen) { - return tfm->generate(tfm, src, slen, dst, dlen); + return crypto_rng_alg(tfm)->generate(tfm, src, slen, dst, dlen); } /** @@ -198,7 +194,7 @@ int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, */ static inline int crypto_rng_seedsize(struct crypto_rng *tfm) { - return tfm->seedsize; + return crypto_rng_alg(tfm)->seedsize; } #endif diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 2fa9b05360f7..ee14140f8893 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -138,7 +138,6 @@ struct crypto_async_request; struct crypto_aead; struct crypto_blkcipher; struct crypto_hash; -struct crypto_rng; struct crypto_tfm; struct crypto_type; struct aead_givcrypt_request; @@ -426,40 +425,12 @@ struct compress_alg { unsigned int slen, u8 *dst, unsigned int *dlen); }; -/** - * struct old_rng_alg - random number generator definition - * @rng_make_random: The function defined by this variable obtains a random - * number. The random number generator transform must generate - * the random number out of the context provided with this - * call. - * @rng_reset: Reset of the random number generator by clearing the entire state. - * With the invocation of this function call, the random number - * generator shall completely reinitialize its state. If the random - * number generator requires a seed for setting up a new state, - * the seed must be provided by the consumer while invoking this - * function. The required size of the seed is defined with - * @seedsize . - * @seedsize: The seed size required for a random number generator - * initialization defined with this variable. Some random number - * generators like the SP800-90A DRBG does not require a seed as the - * seeding is implemented internally without the need of support by - * the consumer. In this case, the seed size is set to zero. - */ -struct old_rng_alg { - int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata, - unsigned int dlen); - int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen); - - unsigned int seedsize; -}; - #define cra_ablkcipher cra_u.ablkcipher #define cra_aead cra_u.aead #define cra_blkcipher cra_u.blkcipher #define cra_cipher cra_u.cipher #define cra_compress cra_u.compress -#define cra_rng cra_u.rng /** * struct crypto_alg - definition of a cryptograpic cipher algorithm @@ -559,7 +530,6 @@ struct crypto_alg { struct blkcipher_alg blkcipher; struct cipher_alg cipher; struct compress_alg compress; - struct old_rng_alg rng; } cra_u; int (*cra_init)(struct crypto_tfm *tfm); |