write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/crypto/twofish_common.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Common Twofish algorithm parts shared between the c and assembler
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  * implementations
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@@ -12,20 +13,6 @@
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  * The original author has disclaimed all copyright interest in this
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  * code and thus put it in the public domain. The subsequent authors
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  * have put this under the GNU General Public License.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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- *
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  *
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  * This code is a "clean room" implementation, written from the paper
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  * _Twofish: A 128-Bit Block Cipher_ by Bruce Schneier, John Kelsey,
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@@ -580,7 +567,7 @@
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 /* Perform the key setup. */
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 int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key,
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-		     unsigned int key_len, u32 *flags)
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+		     unsigned int key_len)
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 {
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 	int i, j, k;
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@@ -597,10 +584,7 @@
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 	/* Check key length. */
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 	if (key_len % 8)
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-	{
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-		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
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 		return -EINVAL; /* unsupported key length */
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-	}
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 	/* Compute the first two words of the S vector.  The magic numbers are
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 	 * the entries of the RS matrix, preprocessed through poly_to_exp. The
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@@ -701,8 +685,7 @@
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 int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len)
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 {
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-	return __twofish_setkey(crypto_tfm_ctx(tfm), key, key_len,
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-				&tfm->crt_flags);
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+	return __twofish_setkey(crypto_tfm_ctx(tfm), key, key_len);
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 }
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 EXPORT_SYMBOL_GPL(twofish_setkey);
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