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Currently <crypto/sha.h> contains declarations for both SHA-1 and SHA-2, and <crypto/sha3.h> contains declarations for SHA-3. This organization is inconsistent, but more importantly SHA-1 is no longer considered to be cryptographically secure. So to the extent possible, SHA-1 shouldn't be grouped together with any of the other SHA versions, and usage of it should be phased out. Therefore, split <crypto/sha.h> into two headers <crypto/sha1.h> and <crypto/sha2.h>, and make everyone explicitly specify whether they want the declarations for SHA-1, SHA-2, or both. This avoids making the SHA-1 declarations visible to files that don't want anything to do with SHA-1. It also prepares for potentially moving sha1.h into a new insecure/ or dangerous/ directory. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
36 lines
912 B
C
36 lines
912 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Cryptographic API.
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*
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* s390 generic implementation of the SHA Secure Hash Algorithms.
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*
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* Copyright IBM Corp. 2007
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* Author(s): Jan Glauber (jang@de.ibm.com)
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*/
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#ifndef _CRYPTO_ARCH_S390_SHA_H
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#define _CRYPTO_ARCH_S390_SHA_H
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#include <linux/crypto.h>
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#include <crypto/sha1.h>
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#include <crypto/sha2.h>
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#include <crypto/sha3.h>
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/* must be big enough for the largest SHA variant */
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#define SHA3_STATE_SIZE 200
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#define CPACF_MAX_PARMBLOCK_SIZE SHA3_STATE_SIZE
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#define SHA_MAX_BLOCK_SIZE SHA3_224_BLOCK_SIZE
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struct s390_sha_ctx {
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u64 count; /* message length in bytes */
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u32 state[CPACF_MAX_PARMBLOCK_SIZE / sizeof(u32)];
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u8 buf[SHA_MAX_BLOCK_SIZE];
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int func; /* KIMD function to use */
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};
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struct shash_desc;
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int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len);
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int s390_sha_final(struct shash_desc *desc, u8 *out);
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#endif
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