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eeb0899e00
commit 9c1e8836ed upstream.
The crypto glue performed function prototype casting via macros to make
indirect calls to assembly routines. Instead of performing casts at the
call sites (which trips Control Flow Integrity prototype checking), switch
each prototype to a common standard set of arguments which allows the
removal of the existing macros. In order to keep pointer math unchanged,
internal casting between u128 pointers and u8 pointers is added.
Co-developed-by: João Moreira <joao.moreira@intel.com>
Signed-off-by: João Moreira <joao.moreira@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ard Biesheuvel <ardb@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
25 lines
624 B
C
25 lines
624 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _CRYPTO_CAST6_H
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#define _CRYPTO_CAST6_H
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#include <linux/types.h>
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#include <linux/crypto.h>
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#include <crypto/cast_common.h>
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#define CAST6_BLOCK_SIZE 16
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#define CAST6_MIN_KEY_SIZE 16
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#define CAST6_MAX_KEY_SIZE 32
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struct cast6_ctx {
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u32 Km[12][4];
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u8 Kr[12][4];
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};
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int __cast6_setkey(struct cast6_ctx *ctx, const u8 *key,
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unsigned int keylen, u32 *flags);
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int cast6_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen);
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void __cast6_encrypt(const void *ctx, u8 *dst, const u8 *src);
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void __cast6_decrypt(const void *ctx, u8 *dst, const u8 *src);
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#endif
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