Last change
on this file since 453 was 453, checked in by coas-nagasima, 4 years ago |
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[453] | 1 | // Copyright (c) Microsoft. All rights reserved.
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| 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
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| 3 |
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| 4 | /*************************** sha-private.h ***************************/
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| 5 | /********************** See RFC 4634 for details *********************/
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| 6 | #ifndef _SHA_PRIVATE__H
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| 7 | #define _SHA_PRIVATE__H
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| 8 | /*
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| 9 | * These definitions are defined in FIPS-180-2, section 4.1.
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| 10 | * Ch() and Maj() are defined identically in sections 4.1.1,
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| 11 | * 4.1.2 and 4.1.3.
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| 12 | *
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| 13 | * The definitions used in FIPS-180-2 are as follows:
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| 14 | */
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| 15 |
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| 16 | #ifndef USE_MODIFIED_MACROS
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| 17 | #define SHA_Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
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| 18 | #define SHA_Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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| 19 |
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| 20 | #else /* USE_MODIFIED_MACROS */
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| 21 | /*
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| 22 | * The following definitions are equivalent and potentially faster.
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| 23 | */
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| 24 |
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| 25 | #define SHA_Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z))
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| 26 | #define SHA_Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
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| 27 |
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| 28 | #endif /* USE_MODIFIED_MACROS */
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| 29 |
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| 30 | #define SHA_Parity(x, y, z) ((x) ^ (y) ^ (z))
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| 31 |
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| 32 | #endif /* _SHA_PRIVATE__H */
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| 33 |
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