4581e38971
This implements SHA-512/256, which generates a 256 bit hash by calculating the SHA-512 then truncating the result. A different initial value is used, making the result different from the first 256 bits of the SHA-512 of the same input. SHA-512 is ~50% faster than SHA-256 on 64bit platforms, so the result is a faster 256 bit hash. The main goal of this implementation is to enable support for this faster hashing algorithm in ZFS. The feature was introduced into ZFS in r289422, but is disconnected because SHA-512/256 support was missing. A further commit will enable it in ZFS. This is the follow on to r292782 Reviewed by: cem Sponsored by: ScaleEngine Inc. Differential Revision: https://reviews.freebsd.org/D6061
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/* SHADRIVER.C - test driver for SHA-1 (and SHA-2) */
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/* Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All rights
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* reserved.
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*
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* RSA Data Security, Inc. makes no representations concerning either the
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* merchantability of this software or the suitability of this software for
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* any particular purpose. It is provided "as is" without express or implied
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* warranty of any kind.
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*
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* These notices must be retained in any copies of any part of this
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* documentation and/or software. */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#include "sha.h"
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#include "sha256.h"
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#include "sha384.h"
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#include "sha512.h"
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#include "sha512t.h"
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/* The following makes SHA default to SHA-1 if it has not already been
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* defined with C compiler flags. */
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#ifndef SHA
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#define SHA 1
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#endif
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#if SHA == 1
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#undef SHA_Data
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#define SHA_Data SHA1_Data
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#elif SHA == 256
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#undef SHA_Data
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#define SHA_Data SHA256_Data
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#elif SHA == 384
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#undef SHA_Data
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#define SHA_Data SHA384_Data
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#elif SHA == 512
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#undef SHA_Data
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#define SHA_Data SHA512_Data
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#elif SHA == 512256
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#undef SHA_Data
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#define SHA_Data SHA512_256_Data
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#endif
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/* Digests a string and prints the result. */
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static void
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SHAString(char *string)
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{
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char buf[2*64 + 1];
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printf("SHA-%d (\"%s\") = %s\n",
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SHA, string, SHA_Data(string, strlen(string), buf));
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}
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/* Digests a reference suite of strings and prints the results. */
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int
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main(void)
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{
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printf("SHA-%d test suite:\n", SHA);
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SHAString("");
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SHAString("abc");
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SHAString("message digest");
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SHAString("abcdefghijklmnopqrstuvwxyz");
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SHAString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"abcdefghijklmnopqrstuvwxyz0123456789");
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SHAString("1234567890123456789012345678901234567890"
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"1234567890123456789012345678901234567890");
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return 0;
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}
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