diff options
Diffstat (limited to 'crypto/sm4_generic.c')
| -rw-r--r-- | crypto/sm4_generic.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/crypto/sm4_generic.c b/crypto/sm4_generic.c index 71ffb343709a..016dbc595705 100644 --- a/crypto/sm4_generic.c +++ b/crypto/sm4_generic.c @@ -143,29 +143,23 @@ int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key, EXPORT_SYMBOL_GPL(crypto_sm4_expand_key); /** - * crypto_sm4_set_key - Set the AES key. + * crypto_sm4_set_key - Set the SM4 key. * @tfm: The %crypto_tfm that is used in the context. * @in_key: The input key. * @key_len: The size of the key. * - * Returns 0 on success, on failure the %CRYPTO_TFM_RES_BAD_KEY_LEN flag in tfm - * is set. The function uses crypto_sm4_expand_key() to expand the key. + * This function uses crypto_sm4_expand_key() to expand the key. * &crypto_sm4_ctx _must_ be the private data embedded in @tfm which is * retrieved with crypto_tfm_ctx(). + * + * Return: 0 on success; -EINVAL on failure (only happens for bad key lengths) */ int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key, unsigned int key_len) { struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm); - u32 *flags = &tfm->crt_flags; - int ret; - - ret = crypto_sm4_expand_key(ctx, in_key, key_len); - if (!ret) - return 0; - *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; - return -EINVAL; + return crypto_sm4_expand_key(ctx, in_key, key_len); } EXPORT_SYMBOL_GPL(crypto_sm4_set_key); |