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crypto: Add userspace report for cipher type algorithms 

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Steffen Klassert 2011-09-27 07:48:01 +02:00 committed by Herbert Xu
parent 792608e9c2
commit 07a5fa4abd
2 changed files with 37 additions and 0 deletions
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29
crypto/crypto_user.c
View File

@ -70,6 +70,25 @@ static struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)
return alg;
}
static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_cipher rcipher;
snprintf(rcipher.type, CRYPTO_MAX_ALG_NAME, "%s", "cipher");
rcipher.blocksize = alg->cra_blocksize;
rcipher.min_keysize = alg->cra_cipher.cia_min_keysize;
rcipher.max_keysize = alg->cra_cipher.cia_max_keysize;
NLA_PUT(skb, CRYPTOCFGA_REPORT_CIPHER,
sizeof(struct crypto_report_cipher), &rcipher);
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static int crypto_report_one(struct crypto_alg *alg,
struct crypto_user_alg *ualg, struct sk_buff *skb)
{
@ -98,6 +117,16 @@ static int crypto_report_one(struct crypto_alg *alg,
if (alg->cra_type && alg->cra_type->report) {
if (alg->cra_type->report(skb, alg))
goto nla_put_failure;
goto out;
}
switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
case CRYPTO_ALG_TYPE_CIPHER:
if (crypto_report_cipher(skb, alg))
goto nla_put_failure;
break;
}
out:

8
include/linux/cryptouser.h
View File

@ -42,6 +42,7 @@ enum crypto_attr_type_t {
CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */
CRYPTOCFGA_REPORT_COMPRESS, /* struct crypto_report_comp */
CRYPTOCFGA_REPORT_RNG, /* struct crypto_report_rng */
CRYPTOCFGA_REPORT_CIPHER, /* struct crypto_report_cipher */
__CRYPTOCFGA_MAX
#define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
@ -67,6 +68,13 @@ struct crypto_report_hash {
unsigned int digestsize;
};
struct crypto_report_cipher {
char type[CRYPTO_MAX_ALG_NAME];
unsigned int blocksize;
unsigned int min_keysize;
unsigned int max_keysize;
};
struct crypto_report_blkcipher {
char type[CRYPTO_MAX_NAME];
char geniv[CRYPTO_MAX_NAME];