diff options
Diffstat (limited to 'include/crypto/xts.h')
| -rw-r--r-- | include/crypto/xts.h | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/include/crypto/xts.h b/include/crypto/xts.h index 75fd96ff976b..0f8dba69feb4 100644 --- a/include/crypto/xts.h +++ b/include/crypto/xts.h @@ -8,28 +8,19 @@ #define XTS_BLOCK_SIZE 16 -#define XTS_TWEAK_CAST(x) ((void (*)(void *, u8*, const u8*))(x)) - static inline int xts_check_key(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) { - u32 *flags = &tfm->crt_flags; - /* * key consists of keys of equal size concatenated, therefore * the length must be even. */ - if (keylen % 2) { - *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + if (keylen % 2) return -EINVAL; - } /* ensure that the AES and tweak key are not identical */ - if (fips_enabled && - !crypto_memneq(key, key + (keylen / 2), keylen / 2)) { - *flags |= CRYPTO_TFM_RES_WEAK_KEY; + if (fips_enabled && !crypto_memneq(key, key + (keylen / 2), keylen / 2)) return -EINVAL; - } return 0; } @@ -41,18 +32,14 @@ static inline int xts_verify_key(struct crypto_skcipher *tfm, * key consists of keys of equal size concatenated, therefore * the length must be even. */ - if (keylen % 2) { - crypto_skcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); + if (keylen % 2) return -EINVAL; - } /* ensure that the AES and tweak key are not identical */ if ((fips_enabled || (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) && - !crypto_memneq(key, key + (keylen / 2), keylen / 2)) { - crypto_skcipher_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY); + !crypto_memneq(key, key + (keylen / 2), keylen / 2)) return -EINVAL; - } return 0; } |