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Diffstat (limited to 'crypto/skcipher.c')
-rw-r--r--crypto/skcipher.c230
1 files changed, 9 insertions, 221 deletions
diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index 22753c1c7202..13da43c84b64 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -580,12 +580,6 @@ EXPORT_SYMBOL_GPL(skcipher_walk_aead_decrypt);
static unsigned int crypto_skcipher_extsize(struct crypto_alg *alg)
{
- if (alg->cra_type == &crypto_blkcipher_type)
- return sizeof(struct crypto_blkcipher *);
-
- if (alg->cra_type == &crypto_ablkcipher_type)
- return sizeof(struct crypto_ablkcipher *);
-
return crypto_alg_extsize(alg);
}
@@ -595,205 +589,6 @@ static void skcipher_set_needkey(struct crypto_skcipher *tfm)
crypto_skcipher_set_flags(tfm, CRYPTO_TFM_NEED_KEY);
}
-static int skcipher_setkey_blkcipher(struct crypto_skcipher *tfm,
- const u8 *key, unsigned int keylen)
-{
- struct crypto_blkcipher **ctx = crypto_skcipher_ctx(tfm);
- struct crypto_blkcipher *blkcipher = *ctx;
- int err;
-
- crypto_blkcipher_clear_flags(blkcipher, ~0);
- crypto_blkcipher_set_flags(blkcipher, crypto_skcipher_get_flags(tfm) &
- CRYPTO_TFM_REQ_MASK);
- err = crypto_blkcipher_setkey(blkcipher, key, keylen);
- crypto_skcipher_set_flags(tfm, crypto_blkcipher_get_flags(blkcipher) &
- CRYPTO_TFM_RES_MASK);
- if (unlikely(err)) {
- skcipher_set_needkey(tfm);
- return err;
- }
-
- crypto_skcipher_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
- return 0;
-}
-
-static int skcipher_crypt_blkcipher(struct skcipher_request *req,
- int (*crypt)(struct blkcipher_desc *,
- struct scatterlist *,
- struct scatterlist *,
- unsigned int))
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct crypto_blkcipher **ctx = crypto_skcipher_ctx(tfm);
- struct blkcipher_desc desc = {
- .tfm = *ctx,
- .info = req->iv,
- .flags = req->base.flags,
- };
-
-
- return crypt(&desc, req->dst, req->src, req->cryptlen);
-}
-
-static int skcipher_encrypt_blkcipher(struct skcipher_request *req)
-{
- struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
- struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
- struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
-
- return skcipher_crypt_blkcipher(req, alg->encrypt);
-}
-
-static int skcipher_decrypt_blkcipher(struct skcipher_request *req)
-{
- struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
- struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
- struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
-
- return skcipher_crypt_blkcipher(req, alg->decrypt);
-}
-
-static void crypto_exit_skcipher_ops_blkcipher(struct crypto_tfm *tfm)
-{
- struct crypto_blkcipher **ctx = crypto_tfm_ctx(tfm);
-
- crypto_free_blkcipher(*ctx);
-}
-
-static int crypto_init_skcipher_ops_blkcipher(struct crypto_tfm *tfm)
-{
- struct crypto_alg *calg = tfm->__crt_alg;
- struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
- struct crypto_blkcipher **ctx = crypto_tfm_ctx(tfm);
- struct crypto_blkcipher *blkcipher;
- struct crypto_tfm *btfm;
-
- if (!crypto_mod_get(calg))
- return -EAGAIN;
-
- btfm = __crypto_alloc_tfm(calg, CRYPTO_ALG_TYPE_BLKCIPHER,
- CRYPTO_ALG_TYPE_MASK);
- if (IS_ERR(btfm)) {
- crypto_mod_put(calg);
- return PTR_ERR(btfm);
- }
-
- blkcipher = __crypto_blkcipher_cast(btfm);
- *ctx = blkcipher;
- tfm->exit = crypto_exit_skcipher_ops_blkcipher;
-
- skcipher->setkey = skcipher_setkey_blkcipher;
- skcipher->encrypt = skcipher_encrypt_blkcipher;
- skcipher->decrypt = skcipher_decrypt_blkcipher;
-
- skcipher->ivsize = crypto_blkcipher_ivsize(blkcipher);
- skcipher->keysize = calg->cra_blkcipher.max_keysize;
-
- skcipher_set_needkey(skcipher);
-
- return 0;
-}
-
-static int skcipher_setkey_ablkcipher(struct crypto_skcipher *tfm,
- const u8 *key, unsigned int keylen)
-{
- struct crypto_ablkcipher **ctx = crypto_skcipher_ctx(tfm);
- struct crypto_ablkcipher *ablkcipher = *ctx;
- int err;
-
- crypto_ablkcipher_clear_flags(ablkcipher, ~0);
- crypto_ablkcipher_set_flags(ablkcipher,
- crypto_skcipher_get_flags(tfm) &
- CRYPTO_TFM_REQ_MASK);
- err = crypto_ablkcipher_setkey(ablkcipher, key, keylen);
- crypto_skcipher_set_flags(tfm,
- crypto_ablkcipher_get_flags(ablkcipher) &
- CRYPTO_TFM_RES_MASK);
- if (unlikely(err)) {
- skcipher_set_needkey(tfm);
- return err;
- }
-
- crypto_skcipher_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
- return 0;
-}
-
-static int skcipher_crypt_ablkcipher(struct skcipher_request *req,
- int (*crypt)(struct ablkcipher_request *))
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct crypto_ablkcipher **ctx = crypto_skcipher_ctx(tfm);
- struct ablkcipher_request *subreq = skcipher_request_ctx(req);
-
- ablkcipher_request_set_tfm(subreq, *ctx);
- ablkcipher_request_set_callback(subreq, skcipher_request_flags(req),
- req->base.complete, req->base.data);
- ablkcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
- req->iv);
-
- return crypt(subreq);
-}
-
-static int skcipher_encrypt_ablkcipher(struct skcipher_request *req)
-{
- struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
- struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
- struct ablkcipher_alg *alg = &tfm->__crt_alg->cra_ablkcipher;
-
- return skcipher_crypt_ablkcipher(req, alg->encrypt);
-}
-
-static int skcipher_decrypt_ablkcipher(struct skcipher_request *req)
-{
- struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
- struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
- struct ablkcipher_alg *alg = &tfm->__crt_alg->cra_ablkcipher;
-
- return skcipher_crypt_ablkcipher(req, alg->decrypt);
-}
-
-static void crypto_exit_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
-{
- struct crypto_ablkcipher **ctx = crypto_tfm_ctx(tfm);
-
- crypto_free_ablkcipher(*ctx);
-}
-
-static int crypto_init_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
-{
- struct crypto_alg *calg = tfm->__crt_alg;
- struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
- struct crypto_ablkcipher **ctx = crypto_tfm_ctx(tfm);
- struct crypto_ablkcipher *ablkcipher;
- struct crypto_tfm *abtfm;
-
- if (!crypto_mod_get(calg))
- return -EAGAIN;
-
- abtfm = __crypto_alloc_tfm(calg, 0, 0);
- if (IS_ERR(abtfm)) {
- crypto_mod_put(calg);
- return PTR_ERR(abtfm);
- }
-
- ablkcipher = __crypto_ablkcipher_cast(abtfm);
- *ctx = ablkcipher;
- tfm->exit = crypto_exit_skcipher_ops_ablkcipher;
-
- skcipher->setkey = skcipher_setkey_ablkcipher;
- skcipher->encrypt = skcipher_encrypt_ablkcipher;
- skcipher->decrypt = skcipher_decrypt_ablkcipher;
-
- skcipher->ivsize = crypto_ablkcipher_ivsize(ablkcipher);
- skcipher->reqsize = crypto_ablkcipher_reqsize(ablkcipher) +
- sizeof(struct ablkcipher_request);
- skcipher->keysize = calg->cra_ablkcipher.max_keysize;
-
- skcipher_set_needkey(skcipher);
-
- return 0;
-}
-
static int skcipher_setkey_unaligned(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
@@ -888,12 +683,6 @@ static int crypto_skcipher_init_tfm(struct crypto_tfm *tfm)
struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
struct skcipher_alg *alg = crypto_skcipher_alg(skcipher);
- if (tfm->__crt_alg->cra_type == &crypto_blkcipher_type)
- return crypto_init_skcipher_ops_blkcipher(tfm);
-
- if (tfm->__crt_alg->cra_type == &crypto_ablkcipher_type)
- return crypto_init_skcipher_ops_ablkcipher(tfm);
-
skcipher->setkey = skcipher_setkey;
skcipher->encrypt = alg->encrypt;
skcipher->decrypt = alg->decrypt;
@@ -964,7 +753,7 @@ static int crypto_skcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
}
#endif
-static const struct crypto_type crypto_skcipher_type2 = {
+static const struct crypto_type crypto_skcipher_type = {
.extsize = crypto_skcipher_extsize,
.init_tfm = crypto_skcipher_init_tfm,
.free = crypto_skcipher_free_instance,
@@ -973,7 +762,7 @@ static const struct crypto_type crypto_skcipher_type2 = {
#endif
.report = crypto_skcipher_report,
.maskclear = ~CRYPTO_ALG_TYPE_MASK,
- .maskset = CRYPTO_ALG_TYPE_BLKCIPHER_MASK,
+ .maskset = CRYPTO_ALG_TYPE_MASK,
.type = CRYPTO_ALG_TYPE_SKCIPHER,
.tfmsize = offsetof(struct crypto_skcipher, base),
};
@@ -981,7 +770,7 @@ static const struct crypto_type crypto_skcipher_type2 = {
int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn,
const char *name, u32 type, u32 mask)
{
- spawn->base.frontend = &crypto_skcipher_type2;
+ spawn->base.frontend = &crypto_skcipher_type;
return crypto_grab_spawn(&spawn->base, name, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_grab_skcipher);
@@ -989,7 +778,7 @@ EXPORT_SYMBOL_GPL(crypto_grab_skcipher);
struct crypto_skcipher *crypto_alloc_skcipher(const char *alg_name,
u32 type, u32 mask)
{
- return crypto_alloc_tfm(alg_name, &crypto_skcipher_type2, type, mask);
+ return crypto_alloc_tfm(alg_name, &crypto_skcipher_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_alloc_skcipher);
@@ -1001,7 +790,7 @@ struct crypto_sync_skcipher *crypto_alloc_sync_skcipher(
/* Only sync algorithms allowed. */
mask |= CRYPTO_ALG_ASYNC;
- tfm = crypto_alloc_tfm(alg_name, &crypto_skcipher_type2, type, mask);
+ tfm = crypto_alloc_tfm(alg_name, &crypto_skcipher_type, type, mask);
/*
* Make sure we do not allocate something that might get used with
@@ -1017,12 +806,11 @@ struct crypto_sync_skcipher *crypto_alloc_sync_skcipher(
}
EXPORT_SYMBOL_GPL(crypto_alloc_sync_skcipher);
-int crypto_has_skcipher2(const char *alg_name, u32 type, u32 mask)
+int crypto_has_skcipher(const char *alg_name, u32 type, u32 mask)
{
- return crypto_type_has_alg(alg_name, &crypto_skcipher_type2,
- type, mask);
+ return crypto_type_has_alg(alg_name, &crypto_skcipher_type, type, mask);
}
-EXPORT_SYMBOL_GPL(crypto_has_skcipher2);
+EXPORT_SYMBOL_GPL(crypto_has_skcipher);
static int skcipher_prepare_alg(struct skcipher_alg *alg)
{
@@ -1037,7 +825,7 @@ static int skcipher_prepare_alg(struct skcipher_alg *alg)
if (!alg->walksize)
alg->walksize = alg->chunksize;
- base->cra_type = &crypto_skcipher_type2;
+ base->cra_type = &crypto_skcipher_type;
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
base->cra_flags |= CRYPTO_ALG_TYPE_SKCIPHER;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-13 00:24:56 +0000