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-rw-r--r--crypto/aead.c161
1 files changed, 48 insertions, 113 deletions
diff --git a/crypto/aead.c b/crypto/aead.c
index d6ad0c66ee83..717b2f6ec9bb 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -26,6 +26,9 @@
#include "internal.h"
+static int aead_null_givencrypt(struct aead_givcrypt_request *req);
+static int aead_null_givdecrypt(struct aead_givcrypt_request *req);
+
static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
unsigned int keylen)
{
@@ -48,63 +51,63 @@ static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
return ret;
}
-static int setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
+int crypto_aead_setkey(struct crypto_aead *tfm,
+ const u8 *key, unsigned int keylen)
{
struct aead_alg *aead = crypto_aead_alg(tfm);
unsigned long alignmask = crypto_aead_alignmask(tfm);
+ tfm = tfm->child;
+
if ((unsigned long)key & alignmask)
return setkey_unaligned(tfm, key, keylen);
return aead->setkey(tfm, key, keylen);
}
+EXPORT_SYMBOL_GPL(crypto_aead_setkey);
int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
{
- struct aead_tfm *crt = crypto_aead_crt(tfm);
int err;
if (authsize > crypto_aead_alg(tfm)->maxauthsize)
return -EINVAL;
if (crypto_aead_alg(tfm)->setauthsize) {
- err = crypto_aead_alg(tfm)->setauthsize(crt->base, authsize);
+ err = crypto_aead_alg(tfm)->setauthsize(tfm->child, authsize);
if (err)
return err;
}
- crypto_aead_crt(crt->base)->authsize = authsize;
- crt->authsize = authsize;
+ tfm->child->authsize = authsize;
+ tfm->authsize = authsize;
return 0;
}
EXPORT_SYMBOL_GPL(crypto_aead_setauthsize);
-static unsigned int crypto_aead_ctxsize(struct crypto_alg *alg, u32 type,
- u32 mask)
-{
- return alg->cra_ctxsize;
-}
-
static int no_givcrypt(struct aead_givcrypt_request *req)
{
return -ENOSYS;
}
-static int crypto_init_aead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+static int crypto_aead_init_tfm(struct crypto_tfm *tfm)
{
struct aead_alg *alg = &tfm->__crt_alg->cra_aead;
- struct aead_tfm *crt = &tfm->crt_aead;
+ struct crypto_aead *crt = __crypto_aead_cast(tfm);
if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8)
return -EINVAL;
- crt->setkey = tfm->__crt_alg->cra_flags & CRYPTO_ALG_GENIV ?
- alg->setkey : setkey;
crt->encrypt = alg->encrypt;
crt->decrypt = alg->decrypt;
- crt->givencrypt = alg->givencrypt ?: no_givcrypt;
- crt->givdecrypt = alg->givdecrypt ?: no_givcrypt;
- crt->base = __crypto_aead_cast(tfm);
+ if (alg->ivsize) {
+ crt->givencrypt = alg->givencrypt ?: no_givcrypt;
+ crt->givdecrypt = alg->givdecrypt ?: no_givcrypt;
+ } else {
+ crt->givencrypt = aead_null_givencrypt;
+ crt->givdecrypt = aead_null_givdecrypt;
+ }
+ crt->child = __crypto_aead_cast(tfm);
crt->ivsize = alg->ivsize;
crt->authsize = alg->maxauthsize;
@@ -155,12 +158,17 @@ static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
}
const struct crypto_type crypto_aead_type = {
- .ctxsize = crypto_aead_ctxsize,
- .init = crypto_init_aead_ops,
+ .extsize = crypto_alg_extsize,
+ .init_tfm = crypto_aead_init_tfm,
#ifdef CONFIG_PROC_FS
.show = crypto_aead_show,
#endif
.report = crypto_aead_report,
+ .lookup = crypto_lookup_aead,
+ .maskclear = ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV),
+ .maskset = CRYPTO_ALG_TYPE_MASK,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .tfmsize = offsetof(struct crypto_aead, base),
};
EXPORT_SYMBOL_GPL(crypto_aead_type);
@@ -174,28 +182,6 @@ static int aead_null_givdecrypt(struct aead_givcrypt_request *req)
return crypto_aead_decrypt(&req->areq);
}
-static int crypto_init_nivaead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
-{
- struct aead_alg *alg = &tfm->__crt_alg->cra_aead;
- struct aead_tfm *crt = &tfm->crt_aead;
-
- if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8)
- return -EINVAL;
-
- crt->setkey = setkey;
- crt->encrypt = alg->encrypt;
- crt->decrypt = alg->decrypt;
- if (!alg->ivsize) {
- crt->givencrypt = aead_null_givencrypt;
- crt->givdecrypt = aead_null_givdecrypt;
- }
- crt->base = __crypto_aead_cast(tfm);
- crt->ivsize = alg->ivsize;
- crt->authsize = alg->maxauthsize;
-
- return 0;
-}
-
#ifdef CONFIG_NET
static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg)
{
@@ -241,32 +227,24 @@ static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg)
}
const struct crypto_type crypto_nivaead_type = {
- .ctxsize = crypto_aead_ctxsize,
- .init = crypto_init_nivaead_ops,
+ .extsize = crypto_alg_extsize,
+ .init_tfm = crypto_aead_init_tfm,
#ifdef CONFIG_PROC_FS
.show = crypto_nivaead_show,
#endif
.report = crypto_nivaead_report,
+ .maskclear = ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV),
+ .maskset = CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .tfmsize = offsetof(struct crypto_aead, base),
};
EXPORT_SYMBOL_GPL(crypto_nivaead_type);
static int crypto_grab_nivaead(struct crypto_aead_spawn *spawn,
const char *name, u32 type, u32 mask)
{
- struct crypto_alg *alg;
- int err;
-
- type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
- type |= CRYPTO_ALG_TYPE_AEAD;
- mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV;
-
- alg = crypto_alg_mod_lookup(name, type, mask);
- if (IS_ERR(alg))
- return PTR_ERR(alg);
-
- err = crypto_init_spawn(&spawn->base, alg, spawn->base.inst, mask);
- crypto_mod_put(alg);
- return err;
+ spawn->base.frontend = &crypto_nivaead_type;
+ return crypto_grab_spawn(&spawn->base, name, type, mask);
}
struct crypto_instance *aead_geniv_alloc(struct crypto_template *tmpl,
@@ -374,14 +352,17 @@ EXPORT_SYMBOL_GPL(aead_geniv_free);
int aead_geniv_init(struct crypto_tfm *tfm)
{
struct crypto_instance *inst = (void *)tfm->__crt_alg;
+ struct crypto_aead *child;
struct crypto_aead *aead;
- aead = crypto_spawn_aead(crypto_instance_ctx(inst));
- if (IS_ERR(aead))
- return PTR_ERR(aead);
+ aead = __crypto_aead_cast(tfm);
- tfm->crt_aead.base = aead;
- tfm->crt_aead.reqsize += crypto_aead_reqsize(aead);
+ child = crypto_spawn_aead(crypto_instance_ctx(inst));
+ if (IS_ERR(child))
+ return PTR_ERR(child);
+
+ aead->child = child;
+ aead->reqsize += crypto_aead_reqsize(child);
return 0;
}
@@ -389,7 +370,7 @@ EXPORT_SYMBOL_GPL(aead_geniv_init);
void aead_geniv_exit(struct crypto_tfm *tfm)
{
- crypto_free_aead(tfm->crt_aead.base);
+ crypto_free_aead(__crypto_aead_cast(tfm)->child);
}
EXPORT_SYMBOL_GPL(aead_geniv_exit);
@@ -505,60 +486,14 @@ EXPORT_SYMBOL_GPL(crypto_lookup_aead);
int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
u32 type, u32 mask)
{
- struct crypto_alg *alg;
- int err;
-
- type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
- type |= CRYPTO_ALG_TYPE_AEAD;
- mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
- mask |= CRYPTO_ALG_TYPE_MASK;
-
- alg = crypto_lookup_aead(name, type, mask);
- if (IS_ERR(alg))
- return PTR_ERR(alg);
-
- err = crypto_init_spawn(&spawn->base, alg, spawn->base.inst, mask);
- crypto_mod_put(alg);
- return err;
+ spawn->base.frontend = &crypto_aead_type;
+ return crypto_grab_spawn(&spawn->base, name, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_grab_aead);
struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask)
{
- struct crypto_tfm *tfm;
- int err;
-
- type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
- type |= CRYPTO_ALG_TYPE_AEAD;
- mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
- mask |= CRYPTO_ALG_TYPE_MASK;
-
- for (;;) {
- struct crypto_alg *alg;
-
- alg = crypto_lookup_aead(alg_name, type, mask);
- if (IS_ERR(alg)) {
- err = PTR_ERR(alg);
- goto err;
- }
-
- tfm = __crypto_alloc_tfm(alg, type, mask);
- if (!IS_ERR(tfm))
- return __crypto_aead_cast(tfm);
-
- crypto_mod_put(alg);
- err = PTR_ERR(tfm);
-
-err:
- if (err != -EAGAIN)
- break;
- if (signal_pending(current)) {
- err = -EINTR;
- break;
- }
- }
-
- return ERR_PTR(err);
+ return crypto_alloc_tfm(alg_name, &crypto_aead_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_alloc_aead);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 03:02:28 +0000