summaryrefslogtreecommitdiffstats
path: root/kernel/arch/arm64/crypto/aes-ce-ccm-glue.c
diff options
context:
space:
mode:
authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm64/crypto/aes-ce-ccm-glue.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm64/crypto/aes-ce-ccm-glue.c')
-rw-r--r--kernel/arch/arm64/crypto/aes-ce-ccm-glue.c70
1 files changed, 43 insertions, 27 deletions
diff --git a/kernel/arch/arm64/crypto/aes-ce-ccm-glue.c b/kernel/arch/arm64/crypto/aes-ce-ccm-glue.c
index 6c348df5b..f4bf2f2a0 100644
--- a/kernel/arch/arm64/crypto/aes-ce-ccm-glue.c
+++ b/kernel/arch/arm64/crypto/aes-ce-ccm-glue.c
@@ -13,7 +13,7 @@
#include <crypto/aes.h>
#include <crypto/algapi.h>
#include <crypto/scatterwalk.h>
-#include <linux/crypto.h>
+#include <crypto/internal/aead.h>
#include <linux/module.h>
#include "aes-ce-setkey.h"
@@ -124,7 +124,7 @@ static void ccm_calculate_auth_mac(struct aead_request *req, u8 mac[])
ce_aes_ccm_auth_data(mac, (u8 *)&ltag, ltag.len, &macp, ctx->key_enc,
num_rounds(ctx));
- scatterwalk_start(&walk, req->assoc);
+ scatterwalk_start(&walk, req->src);
do {
u32 n = scatterwalk_clamp(&walk, len);
@@ -151,6 +151,10 @@ static int ccm_encrypt(struct aead_request *req)
struct crypto_aes_ctx *ctx = crypto_aead_ctx(aead);
struct blkcipher_desc desc = { .info = req->iv };
struct blkcipher_walk walk;
+ struct scatterlist srcbuf[2];
+ struct scatterlist dstbuf[2];
+ struct scatterlist *src;
+ struct scatterlist *dst;
u8 __aligned(8) mac[AES_BLOCK_SIZE];
u8 buf[AES_BLOCK_SIZE];
u32 len = req->cryptlen;
@@ -168,7 +172,12 @@ static int ccm_encrypt(struct aead_request *req)
/* preserve the original iv for the final round */
memcpy(buf, req->iv, AES_BLOCK_SIZE);
- blkcipher_walk_init(&walk, req->dst, req->src, len);
+ src = scatterwalk_ffwd(srcbuf, req->src, req->assoclen);
+ dst = src;
+ if (req->src != req->dst)
+ dst = scatterwalk_ffwd(dstbuf, req->dst, req->assoclen);
+
+ blkcipher_walk_init(&walk, dst, src, len);
err = blkcipher_aead_walk_virt_block(&desc, &walk, aead,
AES_BLOCK_SIZE);
@@ -194,7 +203,7 @@ static int ccm_encrypt(struct aead_request *req)
return err;
/* copy authtag to end of dst */
- scatterwalk_map_and_copy(mac, req->dst, req->cryptlen,
+ scatterwalk_map_and_copy(mac, dst, req->cryptlen,
crypto_aead_authsize(aead), 1);
return 0;
@@ -207,6 +216,10 @@ static int ccm_decrypt(struct aead_request *req)
unsigned int authsize = crypto_aead_authsize(aead);
struct blkcipher_desc desc = { .info = req->iv };
struct blkcipher_walk walk;
+ struct scatterlist srcbuf[2];
+ struct scatterlist dstbuf[2];
+ struct scatterlist *src;
+ struct scatterlist *dst;
u8 __aligned(8) mac[AES_BLOCK_SIZE];
u8 buf[AES_BLOCK_SIZE];
u32 len = req->cryptlen - authsize;
@@ -224,7 +237,12 @@ static int ccm_decrypt(struct aead_request *req)
/* preserve the original iv for the final round */
memcpy(buf, req->iv, AES_BLOCK_SIZE);
- blkcipher_walk_init(&walk, req->dst, req->src, len);
+ src = scatterwalk_ffwd(srcbuf, req->src, req->assoclen);
+ dst = src;
+ if (req->src != req->dst)
+ dst = scatterwalk_ffwd(dstbuf, req->dst, req->assoclen);
+
+ blkcipher_walk_init(&walk, dst, src, len);
err = blkcipher_aead_walk_virt_block(&desc, &walk, aead,
AES_BLOCK_SIZE);
@@ -250,44 +268,42 @@ static int ccm_decrypt(struct aead_request *req)
return err;
/* compare calculated auth tag with the stored one */
- scatterwalk_map_and_copy(buf, req->src, req->cryptlen - authsize,
+ scatterwalk_map_and_copy(buf, src, req->cryptlen - authsize,
authsize, 0);
- if (memcmp(mac, buf, authsize))
+ if (crypto_memneq(mac, buf, authsize))
return -EBADMSG;
return 0;
}
-static struct crypto_alg ccm_aes_alg = {
- .cra_name = "ccm(aes)",
- .cra_driver_name = "ccm-aes-ce",
- .cra_priority = 300,
- .cra_flags = CRYPTO_ALG_TYPE_AEAD,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct crypto_aes_ctx),
- .cra_alignmask = 7,
- .cra_type = &crypto_aead_type,
- .cra_module = THIS_MODULE,
- .cra_aead = {
- .ivsize = AES_BLOCK_SIZE,
- .maxauthsize = AES_BLOCK_SIZE,
- .setkey = ccm_setkey,
- .setauthsize = ccm_setauthsize,
- .encrypt = ccm_encrypt,
- .decrypt = ccm_decrypt,
- }
+static struct aead_alg ccm_aes_alg = {
+ .base = {
+ .cra_name = "ccm(aes)",
+ .cra_driver_name = "ccm-aes-ce",
+ .cra_priority = 300,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct crypto_aes_ctx),
+ .cra_alignmask = 7,
+ .cra_module = THIS_MODULE,
+ },
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ .setkey = ccm_setkey,
+ .setauthsize = ccm_setauthsize,
+ .encrypt = ccm_encrypt,
+ .decrypt = ccm_decrypt,
};
static int __init aes_mod_init(void)
{
if (!(elf_hwcap & HWCAP_AES))
return -ENODEV;
- return crypto_register_alg(&ccm_aes_alg);
+ return crypto_register_aead(&ccm_aes_alg);
}
static void __exit aes_mod_exit(void)
{
- crypto_unregister_alg(&ccm_aes_alg);
+ crypto_unregister_aead(&ccm_aes_alg);
}
module_init(aes_mod_init);