diff options
Diffstat (limited to 'kernel/crypto/ansi_cprng.c')
| -rw-r--r-- | kernel/crypto/ansi_cprng.c | 88 |
1 files changed, 41 insertions, 47 deletions
diff --git a/kernel/crypto/ansi_cprng.c b/kernel/crypto/ansi_cprng.c index 765fe7609..eff337ce9 100644 --- a/kernel/crypto/ansi_cprng.c +++ b/kernel/crypto/ansi_cprng.c @@ -20,8 +20,6 @@ #include <linux/moduleparam.h> #include <linux/string.h> -#include "internal.h" - #define DEFAULT_PRNG_KEY "0123456789abcdef" #define DEFAULT_PRNG_KSZ 16 #define DEFAULT_BLK_SZ 16 @@ -281,11 +279,11 @@ static void free_prng_context(struct prng_context *ctx) } static int reset_prng_context(struct prng_context *ctx, - unsigned char *key, size_t klen, - unsigned char *V, unsigned char *DT) + const unsigned char *key, size_t klen, + const unsigned char *V, const unsigned char *DT) { int ret; - unsigned char *prng_key; + const unsigned char *prng_key; spin_lock_bh(&ctx->prng_lock); ctx->flags |= PRNG_NEED_RESET; @@ -353,8 +351,9 @@ static void cprng_exit(struct crypto_tfm *tfm) free_prng_context(crypto_tfm_ctx(tfm)); } -static int cprng_get_random(struct crypto_rng *tfm, u8 *rdata, - unsigned int dlen) +static int cprng_get_random(struct crypto_rng *tfm, + const u8 *src, unsigned int slen, + u8 *rdata, unsigned int dlen) { struct prng_context *prng = crypto_rng_ctx(tfm); @@ -367,11 +366,12 @@ static int cprng_get_random(struct crypto_rng *tfm, u8 *rdata, * V and KEY are required during reset, and DT is optional, detected * as being present by testing the length of the seed */ -static int cprng_reset(struct crypto_rng *tfm, u8 *seed, unsigned int slen) +static int cprng_reset(struct crypto_rng *tfm, + const u8 *seed, unsigned int slen) { struct prng_context *prng = crypto_rng_ctx(tfm); - u8 *key = seed + DEFAULT_BLK_SZ; - u8 *dt = NULL; + const u8 *key = seed + DEFAULT_BLK_SZ; + const u8 *dt = NULL; if (slen < DEFAULT_PRNG_KSZ + DEFAULT_BLK_SZ) return -EINVAL; @@ -387,18 +387,20 @@ static int cprng_reset(struct crypto_rng *tfm, u8 *seed, unsigned int slen) } #ifdef CONFIG_CRYPTO_FIPS -static int fips_cprng_get_random(struct crypto_rng *tfm, u8 *rdata, - unsigned int dlen) +static int fips_cprng_get_random(struct crypto_rng *tfm, + const u8 *src, unsigned int slen, + u8 *rdata, unsigned int dlen) { struct prng_context *prng = crypto_rng_ctx(tfm); return get_prng_bytes(rdata, dlen, prng, 1); } -static int fips_cprng_reset(struct crypto_rng *tfm, u8 *seed, unsigned int slen) +static int fips_cprng_reset(struct crypto_rng *tfm, + const u8 *seed, unsigned int slen) { u8 rdata[DEFAULT_BLK_SZ]; - u8 *key = seed + DEFAULT_BLK_SZ; + const u8 *key = seed + DEFAULT_BLK_SZ; int rc; struct prng_context *prng = crypto_rng_ctx(tfm); @@ -424,40 +426,32 @@ out: } #endif -static struct crypto_alg rng_algs[] = { { - .cra_name = "stdrng", - .cra_driver_name = "ansi_cprng", - .cra_priority = 100, - .cra_flags = CRYPTO_ALG_TYPE_RNG, - .cra_ctxsize = sizeof(struct prng_context), - .cra_type = &crypto_rng_type, - .cra_module = THIS_MODULE, - .cra_init = cprng_init, - .cra_exit = cprng_exit, - .cra_u = { - .rng = { - .rng_make_random = cprng_get_random, - .rng_reset = cprng_reset, - .seedsize = DEFAULT_PRNG_KSZ + 2*DEFAULT_BLK_SZ, - } +static struct rng_alg rng_algs[] = { { + .generate = cprng_get_random, + .seed = cprng_reset, + .seedsize = DEFAULT_PRNG_KSZ + 2 * DEFAULT_BLK_SZ, + .base = { + .cra_name = "stdrng", + .cra_driver_name = "ansi_cprng", + .cra_priority = 100, + .cra_ctxsize = sizeof(struct prng_context), + .cra_module = THIS_MODULE, + .cra_init = cprng_init, + .cra_exit = cprng_exit, } #ifdef CONFIG_CRYPTO_FIPS }, { - .cra_name = "fips(ansi_cprng)", - .cra_driver_name = "fips_ansi_cprng", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_RNG, - .cra_ctxsize = sizeof(struct prng_context), - .cra_type = &crypto_rng_type, - .cra_module = THIS_MODULE, - .cra_init = cprng_init, - .cra_exit = cprng_exit, - .cra_u = { - .rng = { - .rng_make_random = fips_cprng_get_random, - .rng_reset = fips_cprng_reset, - .seedsize = DEFAULT_PRNG_KSZ + 2*DEFAULT_BLK_SZ, - } + .generate = fips_cprng_get_random, + .seed = fips_cprng_reset, + .seedsize = DEFAULT_PRNG_KSZ + 2 * DEFAULT_BLK_SZ, + .base = { + .cra_name = "fips(ansi_cprng)", + .cra_driver_name = "fips_ansi_cprng", + .cra_priority = 300, + .cra_ctxsize = sizeof(struct prng_context), + .cra_module = THIS_MODULE, + .cra_init = cprng_init, + .cra_exit = cprng_exit, } #endif } }; @@ -465,12 +459,12 @@ static struct crypto_alg rng_algs[] = { { /* Module initalization */ static int __init prng_mod_init(void) { - return crypto_register_algs(rng_algs, ARRAY_SIZE(rng_algs)); + return crypto_register_rngs(rng_algs, ARRAY_SIZE(rng_algs)); } static void __exit prng_mod_fini(void) { - crypto_unregister_algs(rng_algs, ARRAY_SIZE(rng_algs)); + crypto_unregister_rngs(rng_algs, ARRAY_SIZE(rng_algs)); } MODULE_LICENSE("GPL"); |