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Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

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Pull crypto fixes from Herbert Xu:
 "This fixes a regression in RSA that was only half-fixed earlier in the
  cycle.  It also fixes an older regression that breaks the keyring
  subsystem"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: rsa-pkcs1pad - Handle leading zero for decryption
  KEYS: Fix skcipher IV clobbering
This commit is contained in:
Linus Torvalds
2016-09-23 11:28:04 -07:00
parent 7d188bad66 0cf43f509f
commit 2ddfdd4289
2 changed files with 31 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
security/keys/encrypted-keys/encrypted.c
+7 -4
View File
@@ -29,6 +29,7 @@
#include <linux/rcupdate.h>
#include <linux/scatterlist.h>
#include <linux/ctype.h>
#include <crypto/aes.h>
#include <crypto/hash.h>
#include <crypto/sha.h>
#include <crypto/skcipher.h>
@@ -478,6 +479,7 @@ static int derived_key_encrypt(struct encrypted_key_payload *epayload,
struct crypto_skcipher *tfm;
struct skcipher_request *req;
unsigned int encrypted_datalen;
u8 iv[AES_BLOCK_SIZE];
unsigned int padlen;
char pad[16];
int ret;
@@ -500,8 +502,8 @@ static int derived_key_encrypt(struct encrypted_key_payload *epayload,
sg_init_table(sg_out, 1);
sg_set_buf(sg_out, epayload->encrypted_data, encrypted_datalen);
skcipher_request_set_crypt(req, sg_in, sg_out, encrypted_datalen,
epayload->iv);
memcpy(iv, epayload->iv, sizeof(iv));
skcipher_request_set_crypt(req, sg_in, sg_out, encrypted_datalen, iv);
ret = crypto_skcipher_encrypt(req);
tfm = crypto_skcipher_reqtfm(req);
skcipher_request_free(req);
@@ -581,6 +583,7 @@ static int derived_key_decrypt(struct encrypted_key_payload *epayload,
struct crypto_skcipher *tfm;
struct skcipher_request *req;
unsigned int encrypted_datalen;
u8 iv[AES_BLOCK_SIZE];
char pad[16];
int ret;
@@ -599,8 +602,8 @@ static int derived_key_decrypt(struct encrypted_key_payload *epayload,
epayload->decrypted_datalen);
sg_set_buf(&sg_out[1], pad, sizeof pad);
skcipher_request_set_crypt(req, sg_in, sg_out, encrypted_datalen,
epayload->iv);
memcpy(iv, epayload->iv, sizeof(iv));
skcipher_request_set_crypt(req, sg_in, sg_out, encrypted_datalen, iv);
ret = crypto_skcipher_decrypt(req);
tfm = crypto_skcipher_reqtfm(req);
skcipher_request_free(req);