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1c83a9aab8
The "half md4" transform should not be used by any new code. And fortunately, it's only used now by ext4. Since ext4 supports several hashing methods, at some point it might be desirable to move to something like SipHash. As an intermediate step, remove half md4 from cryptohash.h and lib, and make it just a local function in ext4's hash.c. There's precedent for doing this; the other function ext can use for its hashes -- TEA -- is also implemented in the same place. Also, by being a local function, this might allow gcc to perform some additional optimizations. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by: Andreas Dilger <adilger@dilger.ca> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
18 lines
388 B
C
18 lines
388 B
C
#ifndef __CRYPTOHASH_H
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#define __CRYPTOHASH_H
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#include <uapi/linux/types.h>
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#define SHA_DIGEST_WORDS 5
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#define SHA_MESSAGE_BYTES (512 /*bits*/ / 8)
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#define SHA_WORKSPACE_WORDS 16
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void sha_init(__u32 *buf);
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void sha_transform(__u32 *digest, const char *data, __u32 *W);
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#define MD5_DIGEST_WORDS 4
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#define MD5_MESSAGE_BYTES 64
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void md5_transform(__u32 *hash, __u32 const *in);
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#endif
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