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Diffstat (limited to 'crypto/chacha20poly1305.c')
-rw-r--r--crypto/chacha20poly1305.c149
1 files changed, 52 insertions, 97 deletions
diff --git a/crypto/chacha20poly1305.c b/crypto/chacha20poly1305.c
index 74e824e537e6..9e4651330852 100644
--- a/crypto/chacha20poly1305.c
+++ b/crypto/chacha20poly1305.c
@@ -16,8 +16,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
-#include "internal.h"
-
struct chachapoly_instance_ctx {
struct crypto_skcipher_spawn chacha;
struct crypto_ahash_spawn poly;
@@ -117,9 +115,9 @@ static int poly_copy_tag(struct aead_request *req)
return 0;
}
-static void chacha_decrypt_done(struct crypto_async_request *areq, int err)
+static void chacha_decrypt_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_verify_tag);
+ async_done_continue(data, err, poly_verify_tag);
}
static int chacha_decrypt(struct aead_request *req)
@@ -163,9 +161,9 @@ static int poly_tail_continue(struct aead_request *req)
return chacha_decrypt(req);
}
-static void poly_tail_done(struct crypto_async_request *areq, int err)
+static void poly_tail_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_tail_continue);
+ async_done_continue(data, err, poly_tail_continue);
}
static int poly_tail(struct aead_request *req)
@@ -193,9 +191,9 @@ static int poly_tail(struct aead_request *req)
return poly_tail_continue(req);
}
-static void poly_cipherpad_done(struct crypto_async_request *areq, int err)
+static void poly_cipherpad_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_tail);
+ async_done_continue(data, err, poly_tail);
}
static int poly_cipherpad(struct aead_request *req)
@@ -222,9 +220,9 @@ static int poly_cipherpad(struct aead_request *req)
return poly_tail(req);
}
-static void poly_cipher_done(struct crypto_async_request *areq, int err)
+static void poly_cipher_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_cipherpad);
+ async_done_continue(data, err, poly_cipherpad);
}
static int poly_cipher(struct aead_request *req)
@@ -252,9 +250,9 @@ static int poly_cipher(struct aead_request *req)
return poly_cipherpad(req);
}
-static void poly_adpad_done(struct crypto_async_request *areq, int err)
+static void poly_adpad_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_cipher);
+ async_done_continue(data, err, poly_cipher);
}
static int poly_adpad(struct aead_request *req)
@@ -281,9 +279,9 @@ static int poly_adpad(struct aead_request *req)
return poly_cipher(req);
}
-static void poly_ad_done(struct crypto_async_request *areq, int err)
+static void poly_ad_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_adpad);
+ async_done_continue(data, err, poly_adpad);
}
static int poly_ad(struct aead_request *req)
@@ -305,9 +303,9 @@ static int poly_ad(struct aead_request *req)
return poly_adpad(req);
}
-static void poly_setkey_done(struct crypto_async_request *areq, int err)
+static void poly_setkey_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_ad);
+ async_done_continue(data, err, poly_ad);
}
static int poly_setkey(struct aead_request *req)
@@ -331,9 +329,9 @@ static int poly_setkey(struct aead_request *req)
return poly_ad(req);
}
-static void poly_init_done(struct crypto_async_request *areq, int err)
+static void poly_init_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_setkey);
+ async_done_continue(data, err, poly_setkey);
}
static int poly_init(struct aead_request *req)
@@ -354,9 +352,9 @@ static int poly_init(struct aead_request *req)
return poly_setkey(req);
}
-static void poly_genkey_done(struct crypto_async_request *areq, int err)
+static void poly_genkey_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_init);
+ async_done_continue(data, err, poly_init);
}
static int poly_genkey(struct aead_request *req)
@@ -393,9 +391,9 @@ static int poly_genkey(struct aead_request *req)
return poly_init(req);
}
-static void chacha_encrypt_done(struct crypto_async_request *areq, int err)
+static void chacha_encrypt_done(void *data, int err)
{
- async_done_continue(areq->data, err, poly_genkey);
+ async_done_continue(data, err, poly_genkey);
}
static int chacha_encrypt(struct aead_request *req)
@@ -477,7 +475,6 @@ static int chachapoly_setkey(struct crypto_aead *aead, const u8 *key,
unsigned int keylen)
{
struct chachapoly_ctx *ctx = crypto_aead_ctx(aead);
- int err;
if (keylen != ctx->saltlen + CHACHA_KEY_SIZE)
return -EINVAL;
@@ -488,11 +485,7 @@ static int chachapoly_setkey(struct crypto_aead *aead, const u8 *key,
crypto_skcipher_clear_flags(ctx->chacha, CRYPTO_TFM_REQ_MASK);
crypto_skcipher_set_flags(ctx->chacha, crypto_aead_get_flags(aead) &
CRYPTO_TFM_REQ_MASK);
-
- err = crypto_skcipher_setkey(ctx->chacha, key, keylen);
- crypto_aead_set_flags(aead, crypto_skcipher_get_flags(ctx->chacha) &
- CRYPTO_TFM_RES_MASK);
- return err;
+ return crypto_skcipher_setkey(ctx->chacha, key, keylen);
}
static int chachapoly_setauthsize(struct crypto_aead *tfm,
@@ -562,95 +555,66 @@ static void chachapoly_free(struct aead_instance *inst)
static int chachapoly_create(struct crypto_template *tmpl, struct rtattr **tb,
const char *name, unsigned int ivsize)
{
- struct crypto_attr_type *algt;
+ u32 mask;
struct aead_instance *inst;
- struct skcipher_alg *chacha;
- struct crypto_alg *poly;
- struct hash_alg_common *poly_hash;
struct chachapoly_instance_ctx *ctx;
- const char *chacha_name, *poly_name;
+ struct skcipher_alg_common *chacha;
+ struct hash_alg_common *poly;
int err;
if (ivsize > CHACHAPOLY_IV_SIZE)
return -EINVAL;
- algt = crypto_get_attr_type(tb);
- if (IS_ERR(algt))
- return PTR_ERR(algt);
-
- if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
- return -EINVAL;
-
- chacha_name = crypto_attr_alg_name(tb[1]);
- if (IS_ERR(chacha_name))
- return PTR_ERR(chacha_name);
- poly_name = crypto_attr_alg_name(tb[2]);
- if (IS_ERR(poly_name))
- return PTR_ERR(poly_name);
-
- poly = crypto_find_alg(poly_name, &crypto_ahash_type,
- CRYPTO_ALG_TYPE_HASH,
- CRYPTO_ALG_TYPE_AHASH_MASK |
- crypto_requires_sync(algt->type,
- algt->mask));
- if (IS_ERR(poly))
- return PTR_ERR(poly);
- poly_hash = __crypto_hash_alg_common(poly);
-
- err = -EINVAL;
- if (poly_hash->digestsize != POLY1305_DIGEST_SIZE)
- goto out_put_poly;
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
+ if (err)
+ return err;
- err = -ENOMEM;
inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
if (!inst)
- goto out_put_poly;
-
+ return -ENOMEM;
ctx = aead_instance_ctx(inst);
ctx->saltlen = CHACHAPOLY_IV_SIZE - ivsize;
- err = crypto_init_ahash_spawn(&ctx->poly, poly_hash,
- aead_crypto_instance(inst));
+
+ err = crypto_grab_skcipher(&ctx->chacha, aead_crypto_instance(inst),
+ crypto_attr_alg_name(tb[1]), 0, mask);
if (err)
goto err_free_inst;
+ chacha = crypto_spawn_skcipher_alg_common(&ctx->chacha);
- crypto_set_skcipher_spawn(&ctx->chacha, aead_crypto_instance(inst));
- err = crypto_grab_skcipher(&ctx->chacha, chacha_name, 0,
- crypto_requires_sync(algt->type,
- algt->mask));
+ err = crypto_grab_ahash(&ctx->poly, aead_crypto_instance(inst),
+ crypto_attr_alg_name(tb[2]), 0, mask);
if (err)
- goto err_drop_poly;
-
- chacha = crypto_spawn_skcipher_alg(&ctx->chacha);
+ goto err_free_inst;
+ poly = crypto_spawn_ahash_alg(&ctx->poly);
err = -EINVAL;
+ if (poly->digestsize != POLY1305_DIGEST_SIZE)
+ goto err_free_inst;
/* Need 16-byte IV size, including Initial Block Counter value */
- if (crypto_skcipher_alg_ivsize(chacha) != CHACHA_IV_SIZE)
- goto out_drop_chacha;
+ if (chacha->ivsize != CHACHA_IV_SIZE)
+ goto err_free_inst;
/* Not a stream cipher? */
if (chacha->base.cra_blocksize != 1)
- goto out_drop_chacha;
+ goto err_free_inst;
err = -ENAMETOOLONG;
if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
"%s(%s,%s)", name, chacha->base.cra_name,
- poly->cra_name) >= CRYPTO_MAX_ALG_NAME)
- goto out_drop_chacha;
+ poly->base.cra_name) >= CRYPTO_MAX_ALG_NAME)
+ goto err_free_inst;
if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
"%s(%s,%s)", name, chacha->base.cra_driver_name,
- poly->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
- goto out_drop_chacha;
+ poly->base.cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
+ goto err_free_inst;
- inst->alg.base.cra_flags = (chacha->base.cra_flags | poly->cra_flags) &
- CRYPTO_ALG_ASYNC;
inst->alg.base.cra_priority = (chacha->base.cra_priority +
- poly->cra_priority) / 2;
+ poly->base.cra_priority) / 2;
inst->alg.base.cra_blocksize = 1;
- inst->alg.base.cra_alignmask = chacha->base.cra_alignmask |
- poly->cra_alignmask;
+ inst->alg.base.cra_alignmask = chacha->base.cra_alignmask;
inst->alg.base.cra_ctxsize = sizeof(struct chachapoly_ctx) +
ctx->saltlen;
inst->alg.ivsize = ivsize;
- inst->alg.chunksize = crypto_skcipher_alg_chunksize(chacha);
+ inst->alg.chunksize = chacha->chunksize;
inst->alg.maxauthsize = POLY1305_DIGEST_SIZE;
inst->alg.init = chachapoly_init;
inst->alg.exit = chachapoly_exit;
@@ -662,20 +626,11 @@ static int chachapoly_create(struct crypto_template *tmpl, struct rtattr **tb,
inst->free = chachapoly_free;
err = aead_register_instance(tmpl, inst);
- if (err)
- goto out_drop_chacha;
-
-out_put_poly:
- crypto_mod_put(poly);
- return err;
-
-out_drop_chacha:
- crypto_drop_skcipher(&ctx->chacha);
-err_drop_poly:
- crypto_drop_ahash(&ctx->poly);
+ if (err) {
err_free_inst:
- kfree(inst);
- goto out_put_poly;
+ chachapoly_free(inst);
+ }
+ return err;
}
static int rfc7539_create(struct crypto_template *tmpl, struct rtattr **tb)
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-02 23:59:59 +0000