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-rw-r--r--crypto/rng.c57
-rw-r--r--include/crypto/internal/rng.h3
-rw-r--r--include/crypto/rng.h10
-rw-r--r--include/linux/crypto.h30
4 files changed, 8 insertions, 92 deletions
diff --git a/crypto/rng.c b/crypto/rng.c
index e98ce1c..055e276 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 2c9a865..263f1a5 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 cc22e52..c5d4684 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 2fa9b05..ee14140 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);
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