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crypto: cryptd - process CRYPTO_ALG_INTERNAL

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The cryptd is used as a wrapper around internal ciphers. Therefore, the
cryptd must process the internal cipher by marking cryptd as internal if
the underlying cipher is an internal cipher.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Stephan Mueller 2015-03-30 21:57:06 +02:00 committed by Herbert Xu
parent 425a882991
commit 466a7b9e3e
2 changed files with 43 additions and 9 deletions
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3
crypto/ablk_helper.c
View File

@ -124,7 +124,8 @@ int ablk_init_common(struct crypto_tfm *tfm, const char *drv_name)
struct async_helper_ctx *ctx = crypto_tfm_ctx(tfm);
struct cryptd_ablkcipher *cryptd_tfm;
cryptd_tfm = cryptd_alloc_ablkcipher(drv_name, 0, 0);
cryptd_tfm = cryptd_alloc_ablkcipher(drv_name, CRYPTO_ALG_INTERNAL,
CRYPTO_ALG_INTERNAL);
if (IS_ERR(cryptd_tfm))
return PTR_ERR(cryptd_tfm);

49
crypto/cryptd.c
View File

@ -168,6 +168,20 @@ static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm)
return ictx->queue;
}
static inline void cryptd_check_internal(struct rtattr **tb, u32 *type,
u32 *mask)
{
struct crypto_attr_type *algt;
algt = crypto_get_attr_type(tb);
if (IS_ERR(algt))
return;
if ((algt->type & CRYPTO_ALG_INTERNAL))
*type |= CRYPTO_ALG_INTERNAL;
if ((algt->mask & CRYPTO_ALG_INTERNAL))
*mask |= CRYPTO_ALG_INTERNAL;
}
static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent,
const u8 *key, unsigned int keylen)
{
@ -321,10 +335,13 @@ static int cryptd_create_blkcipher(struct crypto_template *tmpl,
struct cryptd_instance_ctx *ctx;
struct crypto_instance *inst;
struct crypto_alg *alg;
u32 type = CRYPTO_ALG_TYPE_BLKCIPHER;
u32 mask = CRYPTO_ALG_TYPE_MASK;
int err;
alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER,
CRYPTO_ALG_TYPE_MASK);
cryptd_check_internal(tb, &type, &mask);
alg = crypto_get_attr_alg(tb, type, mask);
if (IS_ERR(alg))
return PTR_ERR(alg);
@ -341,7 +358,10 @@ static int cryptd_create_blkcipher(struct crypto_template *tmpl,
if (err)
goto out_free_inst;
inst->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
if (alg->cra_flags & CRYPTO_ALG_INTERNAL)
type |= CRYPTO_ALG_INTERNAL;
inst->alg.cra_flags = type;
inst->alg.cra_type = &crypto_ablkcipher_type;
inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize;
@ -577,9 +597,13 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
struct ahash_instance *inst;
struct shash_alg *salg;
struct crypto_alg *alg;
u32 type = 0;
u32 mask = 0;
int err;
salg = shash_attr_alg(tb[1], 0, 0);
cryptd_check_internal(tb, &type, &mask);
salg = shash_attr_alg(tb[1], type, mask);
if (IS_ERR(salg))
return PTR_ERR(salg);
@ -598,7 +622,10 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
if (err)
goto out_free_inst;
inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC;
type = CRYPTO_ALG_ASYNC;
if (alg->cra_flags & CRYPTO_ALG_INTERNAL)
type |= CRYPTO_ALG_INTERNAL;
inst->alg.halg.base.cra_flags = type;
inst->alg.halg.digestsize = salg->digestsize;
inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
@ -719,10 +746,13 @@ static int cryptd_create_aead(struct crypto_template *tmpl,
struct aead_instance_ctx *ctx;
struct crypto_instance *inst;
struct crypto_alg *alg;
u32 type = CRYPTO_ALG_TYPE_AEAD;
u32 mask = CRYPTO_ALG_TYPE_MASK;
int err;
alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_AEAD,
CRYPTO_ALG_TYPE_MASK);
cryptd_check_internal(tb, &type, &mask);
alg = crypto_get_attr_alg(tb, type, mask);
if (IS_ERR(alg))
return PTR_ERR(alg);
@ -739,7 +769,10 @@ static int cryptd_create_aead(struct crypto_template *tmpl,
if (err)
goto out_free_inst;
inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
if (alg->cra_flags & CRYPTO_ALG_INTERNAL)
type |= CRYPTO_ALG_INTERNAL;
inst->alg.cra_flags = type;
inst->alg.cra_type = alg->cra_type;
inst->alg.cra_ctxsize = sizeof(struct cryptd_aead_ctx);
inst->alg.cra_init = cryptd_aead_init_tfm;