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[CRYPTO] skcipher: Add skcipher_geniv_alloc/skcipher_geniv_free

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This patch creates the infrastructure to help the construction of givcipher
templates that wrap around existing blkcipher/ablkcipher algorithms by adding
an IV generator to them.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2007-12-05 21:08:36 +11:00
parent 927eead52c
commit ecfc43292f
4 changed files with 225 additions and 6 deletions
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18
include/crypto/internal/skcipher.h
View File

@ -15,6 +15,9 @@
#include <crypto/algapi.h>
#include <crypto/skcipher.h>
#include <linux/types.h>
struct rtattr;
struct crypto_skcipher_spawn {
struct crypto_spawn base;
@ -50,6 +53,21 @@ static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
crypto_skcipher_mask(0)));
}
const char *crypto_default_geniv(const struct crypto_alg *alg);
struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
struct rtattr **tb, u32 type,
u32 mask);
void skcipher_geniv_free(struct crypto_instance *inst);
int skcipher_geniv_init(struct crypto_tfm *tfm);
void skcipher_geniv_exit(struct crypto_tfm *tfm);
static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
struct crypto_ablkcipher *geniv)
{
return crypto_ablkcipher_crt(geniv)->base;
}
static inline void *skcipher_givcrypt_reqctx(
struct skcipher_givcrypt_request *req)
{