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Merge tag 'v6.6-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

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Pull crypto fix from Herbert Xu:
 "Fix a 6.5 regression in crypto/asymmetric_keys"

* tag 'v6.6-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  KEYS: asymmetric: Fix sign/verify on pkcs1pad without a hash
This commit is contained in:
Linus Torvalds
2023-10-21 09:49:13 -07:00
parent 5722119f67 b11950356c
commit f1de9aced8
1 changed files with 2 additions and 3 deletions
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5
crypto/asymmetric_keys/public_key.c
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@@ -81,14 +81,13 @@ software_key_determine_akcipher(const struct public_key *pkey,
* RSA signatures usually use EMSA-PKCS1-1_5 [RFC3447 sec 8.2].
*/
if (strcmp(encoding, "pkcs1") == 0) {
*sig = op == kernel_pkey_sign ||
op == kernel_pkey_verify;
if (!hash_algo) {
*sig = false;
n = snprintf(alg_name, CRYPTO_MAX_ALG_NAME,
"pkcs1pad(%s)",
pkey->pkey_algo);
} else {
*sig = op == kernel_pkey_sign ||
op == kernel_pkey_verify;
n = snprintf(alg_name, CRYPTO_MAX_ALG_NAME,
"pkcs1pad(%s,%s)",
pkey->pkey_algo, hash_algo);