alt-sha512.cpp@ 106580

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1	/* $Id: alt-sha512.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* IPRT - SHA-512 and SHA-384 hash functions, Alternative Implementation.
4	*/
5
6	/*
7	* Copyright (C) 2009-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Defined Constants And Macros *
40	*********************************************************************************************************************************/
41	/** The SHA-512 block size (in bytes). */
42	#define RTSHA512_BLOCK_SIZE 128U
43
44	/** Enables the unrolled code. */
45	#define RTSHA512_UNROLLED 1
46
47
48	/*********************************************************************************************************************************
49	* Header Files *
50	*********************************************************************************************************************************/
51	#include "internal/iprt.h"
52	#include <iprt/types.h>
53	#include <iprt/assert.h>
54	#include <iprt/asm.h>
55	#include <iprt/string.h>
56
57
58	/** Our private context structure. */
59	typedef struct RTSHA512ALTPRIVATECTX
60	{
61	/** The W array.
62	* Buffering happens in the first 16 words, converted from big endian to host
63	* endian immediately before processing. The amount of buffered data is kept
64	* in the 6 least significant bits of cbMessage. */
65	uint64_t auW[80];
66	/** The message length (in bytes). */
67	RTUINT128U cbMessage;
68	/** The 8 hash values. */
69	uint64_t auH[8];
70	} RTSHA512ALTPRIVATECTX;
71
72	#define RT_SHA512_PRIVATE_ALT_CONTEXT
73	#include <iprt/sha.h>
74
75
76	AssertCompile(RT_SIZEOFMEMB(RTSHA512CONTEXT, abPadding) >= RT_SIZEOFMEMB(RTSHA512CONTEXT, AltPrivate));
77	AssertCompileMemberSize(RTSHA512ALTPRIVATECTX, auH, RTSHA512_HASH_SIZE);
78
79
80	/*********************************************************************************************************************************
81	* Global Variables *
82	*********************************************************************************************************************************/
83	#ifndef RTSHA512_UNROLLED
84	/** The K constants. */
85	static uint64_t const g_auKs[] =
86	{
87	UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
88	UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
89	UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
90	UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
91	UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
92	UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
93	UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
94	UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
95	UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
96	UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
97	UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001), UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
98	UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
99	UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
100	UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
101	UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
102	UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
103	UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
104	UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
105	UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
106	UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817),
107	};
108	#endif /* !RTSHA512_UNROLLED */
109
110
111
112	RTDECL(void) RTSha512Init(PRTSHA512CONTEXT pCtx)
113	{
114	pCtx->AltPrivate.cbMessage.s.Lo = 0;
115	pCtx->AltPrivate.cbMessage.s.Hi = 0;
116	pCtx->AltPrivate.auH[0] = UINT64_C(0x6a09e667f3bcc908);
117	pCtx->AltPrivate.auH[1] = UINT64_C(0xbb67ae8584caa73b);
118	pCtx->AltPrivate.auH[2] = UINT64_C(0x3c6ef372fe94f82b);
119	pCtx->AltPrivate.auH[3] = UINT64_C(0xa54ff53a5f1d36f1);
120	pCtx->AltPrivate.auH[4] = UINT64_C(0x510e527fade682d1);
121	pCtx->AltPrivate.auH[5] = UINT64_C(0x9b05688c2b3e6c1f);
122	pCtx->AltPrivate.auH[6] = UINT64_C(0x1f83d9abfb41bd6b);
123	pCtx->AltPrivate.auH[7] = UINT64_C(0x5be0cd19137e2179);
124	}
125	RT_EXPORT_SYMBOL(RTSha512Init);
126
127
128	/** Function 4.8. */
129	DECL_FORCE_INLINE(uint64_t) rtSha512Ch(uint64_t uX, uint64_t uY, uint64_t uZ)
130	{
131	#if 1
132	/* Optimization that saves one operation and probably a temporary variable. */
133	uint64_t uResult = uY;
134	uResult ^= uZ;
135	uResult &= uX;
136	uResult ^= uZ;
137	return uResult;
138	#else
139	/* The original. */
140	uint64_t uResult = uX & uY;
141	uResult ^= ~uX & uZ;
142	return uResult;
143	#endif
144	}
145
146
147	/** Function 4.9. */
148	DECL_FORCE_INLINE(uint64_t) rtSha512Maj(uint64_t uX, uint64_t uY, uint64_t uZ)
149	{
150	#if 1
151	/* Optimization that save one operation and probably a temporary variable. */
152	uint64_t uResult = uY;
153	uResult ^= uZ;
154	uResult &= uX;
155	uResult ^= uY & uZ;
156	return uResult;
157	#else
158	/* The original. */
159	uint64_t uResult = uX & uY;
160	uResult ^= uX & uZ;
161	uResult ^= uY & uZ;
162	return uResult;
163	#endif
164	}
165
166
167	/** Function 4.10. */
168	DECL_FORCE_INLINE(uint64_t) rtSha512CapitalSigma0(uint64_t uX)
169	{
170	uint64_t uResult = uX = ASMRotateRightU64(uX, 28);
171	uX = ASMRotateRightU64(uX, 34 - 28);
172	uResult ^= uX;
173	uX = ASMRotateRightU64(uX, 39 - 34);
174	uResult ^= uX;
175	return uResult;
176	}
177
178
179	/** Function 4.11. */
180	DECL_FORCE_INLINE(uint64_t) rtSha512CapitalSigma1(uint64_t uX)
181	{
182	uint64_t uResult = uX = ASMRotateRightU64(uX, 14);
183	uX = ASMRotateRightU64(uX, 18 - 14);
184	uResult ^= uX;
185	uX = ASMRotateRightU64(uX, 41 - 18);
186	uResult ^= uX;
187	return uResult;
188	}
189
190
191	/** Function 4.12. */
192	DECL_FORCE_INLINE(uint64_t) rtSha512SmallSigma0(uint64_t uX)
193	{
194	uint64_t uResult = uX >> 7;
195	uX = ASMRotateRightU64(uX, 1);
196	uResult ^= uX;
197	uX = ASMRotateRightU64(uX, 8 - 1);
198	uResult ^= uX;
199	return uResult;
200	}
201
202
203	/** Function 4.13. */
204	DECL_FORCE_INLINE(uint64_t) rtSha512SmallSigma1(uint64_t uX)
205	{
206	uint64_t uResult = uX >> 6;
207	uX = ASMRotateRightU64(uX, 19);
208	uResult ^= uX;
209	uX = ASMRotateRightU64(uX, 61 - 19);
210	uResult ^= uX;
211	return uResult;
212	}
213
214
215	/**
216	* Initializes the auW array from the specfied input block.
217	*
218	* @param pCtx The SHA-512 context.
219	* @param pbBlock The block. Must be 64-bit aligned.
220	*/
221	DECLINLINE(void) rtSha512BlockInit(PRTSHA512CONTEXT pCtx, uint8_t const *pbBlock)
222	{
223	#ifdef RTSHA512_UNROLLED
224	uint64_t const puSrc = (uint64_t const )pbBlock;
225	uint64_t *puW = &pCtx->AltPrivate.auW[0];
226	Assert(!((uintptr_t)puSrc & 7));
227	Assert(!((uintptr_t)puW & 7));
228
229	/* Copy and byte-swap the block. Initializing the rest of the Ws are done
230	in the processing loop. */
231	# ifdef RT_LITTLE_ENDIAN
232	puW++ = ASMByteSwapU64(puSrc++);
233	puW++ = ASMByteSwapU64(puSrc++);
234	puW++ = ASMByteSwapU64(puSrc++);
235	puW++ = ASMByteSwapU64(puSrc++);
236
237	puW++ = ASMByteSwapU64(puSrc++);
238	puW++ = ASMByteSwapU64(puSrc++);
239	puW++ = ASMByteSwapU64(puSrc++);
240	puW++ = ASMByteSwapU64(puSrc++);
241
242	puW++ = ASMByteSwapU64(puSrc++);
243	puW++ = ASMByteSwapU64(puSrc++);
244	puW++ = ASMByteSwapU64(puSrc++);
245	puW++ = ASMByteSwapU64(puSrc++);
246
247	puW++ = ASMByteSwapU64(puSrc++);
248	puW++ = ASMByteSwapU64(puSrc++);
249	puW++ = ASMByteSwapU64(puSrc++);
250	puW++ = ASMByteSwapU64(puSrc++);
251	# else
252	memcpy(puW, puSrc, RTSHA512_BLOCK_SIZE);
253	# endif
254
255	#else /* !RTSHA512_UNROLLED */
256
257	uint64_t const pu32Block = (uint64_t const )pbBlock;
258	Assert(!((uintptr_t)pu32Block & 3));
259
260	unsigned iWord;
261	for (iWord = 0; iWord < 16; iWord++)
262	pCtx->AltPrivate.auW[iWord] = RT_BE2H_U64(pu32Block[iWord]);
263
264	for (; iWord < RT_ELEMENTS(pCtx->AltPrivate.auW); iWord++)
265	{
266	uint64_t u64 = rtSha512SmallSigma1(pCtx->AltPrivate.auW[iWord - 2]);
267	u64 += rtSha512SmallSigma0(pCtx->AltPrivate.auW[iWord - 15]);
268	u64 += pCtx->AltPrivate.auW[iWord - 7];
269	u64 += pCtx->AltPrivate.auW[iWord - 16];
270	pCtx->AltPrivate.auW[iWord] = u64;
271	}
272	#endif /* !RTSHA512_UNROLLED */
273	}
274
275
276	/**
277	* Initializes the auW array from data buffered in the first part of the array.
278	*
279	* @param pCtx The SHA-512 context.
280	*/
281	DECLINLINE(void) rtSha512BlockInitBuffered(PRTSHA512CONTEXT pCtx)
282	{
283	#ifdef RTSHA512_UNROLLED
284	uint64_t *puW = &pCtx->AltPrivate.auW[0];
285	Assert(!((uintptr_t)puW & 7));
286
287	/* Do the byte swap if necessary. Initializing the rest of the Ws are done
288	in the processing loop. */
289	# ifdef RT_LITTLE_ENDIAN
290	puW = ASMByteSwapU64(puW); puW++;
291	puW = ASMByteSwapU64(puW); puW++;
292	puW = ASMByteSwapU64(puW); puW++;
293	puW = ASMByteSwapU64(puW); puW++;
294
295	puW = ASMByteSwapU64(puW); puW++;
296	puW = ASMByteSwapU64(puW); puW++;
297	puW = ASMByteSwapU64(puW); puW++;
298	puW = ASMByteSwapU64(puW); puW++;
299
300	puW = ASMByteSwapU64(puW); puW++;
301	puW = ASMByteSwapU64(puW); puW++;
302	puW = ASMByteSwapU64(puW); puW++;
303	puW = ASMByteSwapU64(puW); puW++;
304
305	puW = ASMByteSwapU64(puW); puW++;
306	puW = ASMByteSwapU64(puW); puW++;
307	puW = ASMByteSwapU64(puW); puW++;
308	puW = ASMByteSwapU64(puW); puW++;
309	# endif
310
311	#else /* !RTSHA512_UNROLLED */
312
313	unsigned iWord;
314	for (iWord = 0; iWord < 16; iWord++)
315	pCtx->AltPrivate.auW[iWord] = RT_BE2H_U64(pCtx->AltPrivate.auW[iWord]);
316
317	for (; iWord < RT_ELEMENTS(pCtx->AltPrivate.auW); iWord++)
318	{
319	uint64_t u64 = rtSha512SmallSigma1(pCtx->AltPrivate.auW[iWord - 2]);
320	u64 += rtSha512SmallSigma0(pCtx->AltPrivate.auW[iWord - 15]);
321	u64 += pCtx->AltPrivate.auW[iWord - 7];
322	u64 += pCtx->AltPrivate.auW[iWord - 16];
323	pCtx->AltPrivate.auW[iWord] = u64;
324	}
325	#endif /* !RTSHA512_UNROLLED */
326	}
327
328
329	/**
330	* Process the current block.
331	*
332	* Requires one of the rtSha512BlockInit functions to be called first.
333	*
334	* @param pCtx The SHA-512 context.
335	*/
336	static void rtSha512BlockProcess(PRTSHA512CONTEXT pCtx)
337	{
338	uint64_t uA = pCtx->AltPrivate.auH[0];
339	uint64_t uB = pCtx->AltPrivate.auH[1];
340	uint64_t uC = pCtx->AltPrivate.auH[2];
341	uint64_t uD = pCtx->AltPrivate.auH[3];
342	uint64_t uE = pCtx->AltPrivate.auH[4];
343	uint64_t uF = pCtx->AltPrivate.auH[5];
344	uint64_t uG = pCtx->AltPrivate.auH[6];
345	uint64_t uH = pCtx->AltPrivate.auH[7];
346
347	#ifdef RTSHA512_UNROLLED
348	uint64_t *puW = &pCtx->AltPrivate.auW[0];
349	# define RTSHA512_BODY(a_iWord, a_uK, a_uA, a_uB, a_uC, a_uD, a_uE, a_uF, a_uG, a_uH) \
350	do { \
351	if ((a_iWord) < 16) \
352	a_uH += *puW++; \
353	else \
354	{ \
355	uint64_t u64 = puW[-16]; \
356	u64 += rtSha512SmallSigma0(puW[-15]); \
357	u64 += puW[-7]; \
358	u64 += rtSha512SmallSigma1(puW[-2]); \
359	if (a_iWord < 80-2) *puW++ = u64; else puW++; \
360	a_uH += u64; \
361	} \
362	\
363	a_uH += rtSha512CapitalSigma1(a_uE); \
364	a_uH += a_uK; \
365	a_uH += rtSha512Ch(a_uE, a_uF, a_uG); \
366	a_uD += a_uH; \
367	\
368	a_uH += rtSha512CapitalSigma0(a_uA); \
369	a_uH += rtSha512Maj(a_uA, a_uB, a_uC); \
370	} while (0)
371	# define RTSHA512_EIGHT(a_uK0, a_uK1, a_uK2, a_uK3, a_uK4, a_uK5, a_uK6, a_uK7, a_iFirst) \
372	do { \
373	RTSHA512_BODY(a_iFirst + 0, a_uK0, uA, uB, uC, uD, uE, uF, uG, uH); \
374	RTSHA512_BODY(a_iFirst + 1, a_uK1, uH, uA, uB, uC, uD, uE, uF, uG); \
375	RTSHA512_BODY(a_iFirst + 2, a_uK2, uG, uH, uA, uB, uC, uD, uE, uF); \
376	RTSHA512_BODY(a_iFirst + 3, a_uK3, uF, uG, uH, uA, uB, uC, uD, uE); \
377	RTSHA512_BODY(a_iFirst + 4, a_uK4, uE, uF, uG, uH, uA, uB, uC, uD); \
378	RTSHA512_BODY(a_iFirst + 5, a_uK5, uD, uE, uF, uG, uH, uA, uB, uC); \
379	RTSHA512_BODY(a_iFirst + 6, a_uK6, uC, uD, uE, uF, uG, uH, uA, uB); \
380	RTSHA512_BODY(a_iFirst + 7, a_uK7, uB, uC, uD, uE, uF, uG, uH, uA); \
381	} while (0)
382	RTSHA512_EIGHT(UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
383	UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
384	0);
385	RTSHA512_EIGHT(UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
386	UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
387	8);
388	RTSHA512_EIGHT(UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
389	UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
390	16);
391	RTSHA512_EIGHT(UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
392	UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
393	24);
394	RTSHA512_EIGHT(UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
395	UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
396	32);
397	RTSHA512_EIGHT(UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001), UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
398	UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
399	40);
400	RTSHA512_EIGHT(UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
401	UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
402	48);
403	RTSHA512_EIGHT(UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
404	UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
405	56);
406	RTSHA512_EIGHT(UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
407	UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
408	64);
409	RTSHA512_EIGHT(UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
410	UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817),
411	72);
412	#else
413	for (unsigned iWord = 0; iWord < RT_ELEMENTS(pCtx->AltPrivate.auW); iWord++)
414	{
415	uint64_t uT1 = uH;
416	uT1 += rtSha512CapitalSigma1(uE);
417	uT1 += rtSha512Ch(uE, uF, uG);
418	uT1 += g_auKs[iWord];
419	uT1 += pCtx->AltPrivate.auW[iWord];
420
421	uint64_t uT2 = rtSha512CapitalSigma0(uA);
422	uT2 += rtSha512Maj(uA, uB, uC);
423
424	uH = uG;
425	uG = uF;
426	uF = uE;
427	uE = uD + uT1;
428	uD = uC;
429	uC = uB;
430	uB = uA;
431	uA = uT1 + uT2;
432	}
433	#endif
434
435	pCtx->AltPrivate.auH[0] += uA;
436	pCtx->AltPrivate.auH[1] += uB;
437	pCtx->AltPrivate.auH[2] += uC;
438	pCtx->AltPrivate.auH[3] += uD;
439	pCtx->AltPrivate.auH[4] += uE;
440	pCtx->AltPrivate.auH[5] += uF;
441	pCtx->AltPrivate.auH[6] += uG;
442	pCtx->AltPrivate.auH[7] += uH;
443	}
444
445
446	RTDECL(void) RTSha512Update(PRTSHA512CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
447	{
448	Assert(pCtx->AltPrivate.cbMessage.s.Hi < UINT64_MAX / 8);
449	uint8_t const pbBuf = (uint8_t const )pvBuf;
450
451	/*
452	* Deal with buffered bytes first.
453	*/
454	size_t cbBuffered = (size_t)pCtx->AltPrivate.cbMessage.s.Lo & (RTSHA512_BLOCK_SIZE - 1U);
455	if (cbBuffered)
456	{
457	size_t cbMissing = RTSHA512_BLOCK_SIZE - cbBuffered;
458	if (cbBuf >= cbMissing)
459	{
460	memcpy((uint8_t *)&pCtx->AltPrivate.auW[0] + cbBuffered, pbBuf, cbMissing);
461	pCtx->AltPrivate.cbMessage.s.Lo += cbMissing;
462	if (!pCtx->AltPrivate.cbMessage.s.Lo)
463	pCtx->AltPrivate.cbMessage.s.Hi++;
464	pbBuf += cbMissing;
465	cbBuf -= cbMissing;
466
467	rtSha512BlockInitBuffered(pCtx);
468	rtSha512BlockProcess(pCtx);
469	}
470	else
471	{
472	memcpy((uint8_t *)&pCtx->AltPrivate.auW[0] + cbBuffered, pbBuf, cbBuf);
473	pCtx->AltPrivate.cbMessage.s.Lo += cbBuf;
474	return;
475	}
476	}
477
478	if (!((uintptr_t)pbBuf & 7))
479	{
480	/*
481	* Process full blocks directly from the input buffer.
482	*/
483	while (cbBuf >= RTSHA512_BLOCK_SIZE)
484	{
485	rtSha512BlockInit(pCtx, pbBuf);
486	rtSha512BlockProcess(pCtx);
487
488	pCtx->AltPrivate.cbMessage.s.Lo += RTSHA512_BLOCK_SIZE;
489	if (!pCtx->AltPrivate.cbMessage.s.Lo)
490	pCtx->AltPrivate.cbMessage.s.Hi++;
491	pbBuf += RTSHA512_BLOCK_SIZE;
492	cbBuf -= RTSHA512_BLOCK_SIZE;
493	}
494	}
495	else
496	{
497	/*
498	* Unaligned input, so buffer it.
499	*/
500	while (cbBuf >= RTSHA512_BLOCK_SIZE)
501	{
502	memcpy((uint8_t *)&pCtx->AltPrivate.auW[0], pbBuf, RTSHA512_BLOCK_SIZE);
503	rtSha512BlockInitBuffered(pCtx);
504	rtSha512BlockProcess(pCtx);
505
506	pCtx->AltPrivate.cbMessage.s.Lo += RTSHA512_BLOCK_SIZE;
507	if (!pCtx->AltPrivate.cbMessage.s.Lo)
508	pCtx->AltPrivate.cbMessage.s.Hi++;
509	pbBuf += RTSHA512_BLOCK_SIZE;
510	cbBuf -= RTSHA512_BLOCK_SIZE;
511	}
512	}
513
514	/*
515	* Stash any remaining bytes into the context buffer.
516	*/
517	if (cbBuf > 0)
518	{
519	memcpy((uint8_t *)&pCtx->AltPrivate.auW[0], pbBuf, cbBuf);
520	pCtx->AltPrivate.cbMessage.s.Lo += cbBuf;
521	if (!pCtx->AltPrivate.cbMessage.s.Lo)
522	pCtx->AltPrivate.cbMessage.s.Hi++;
523	}
524	}
525	RT_EXPORT_SYMBOL(RTSha512Update);
526
527
528	/**
529	* Internal worker for RTSha512Final and RTSha384Final that finalizes the
530	* computation but does not copy out the hash value.
531	*
532	* @param pCtx The SHA-512 context.
533	*/
534	static void rtSha512FinalInternal(PRTSHA512CONTEXT pCtx)
535	{
536	Assert(pCtx->AltPrivate.cbMessage.s.Hi < UINT64_MAX / 8);
537
538	/*
539	* Complete the message by adding a single bit (0x80), padding till
540	* the next 448-bit boundrary, the add the message length.
541	*/
542	RTUINT128U cMessageBits = pCtx->AltPrivate.cbMessage;
543	cMessageBits.s.Hi <<= 3;
544	cMessageBits.s.Hi \|= cMessageBits.s.Lo >> 61;
545	cMessageBits.s.Lo <<= 3;
546
547	unsigned cbMissing = RTSHA512_BLOCK_SIZE - ((unsigned)pCtx->AltPrivate.cbMessage.s.Lo & (RTSHA512_BLOCK_SIZE - 1U));
548	static uint8_t const s_abSingleBitAndSomePadding[20] =
549	{ 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
550	if (cbMissing < 1U + 16U)
551	/* Less than 64+16 bits left in the current block, force a new block. */
552	RTSha512Update(pCtx, &s_abSingleBitAndSomePadding, sizeof(s_abSingleBitAndSomePadding));
553	else
554	RTSha512Update(pCtx, &s_abSingleBitAndSomePadding, 1);
555
556	unsigned cbBuffered = (unsigned)pCtx->AltPrivate.cbMessage.s.Lo & (RTSHA512_BLOCK_SIZE - 1U);
557	cbMissing = RTSHA512_BLOCK_SIZE - cbBuffered;
558	Assert(cbMissing >= 16);
559	memset((uint8_t *)&pCtx->AltPrivate.auW[0] + cbBuffered, 0, cbMissing - 16);
560
561	pCtx->AltPrivate.auW[14] = RT_H2BE_U64(cMessageBits.s.Hi);
562	pCtx->AltPrivate.auW[15] = RT_H2BE_U64(cMessageBits.s.Lo);
563
564	/*
565	* Process the last buffered block constructed/completed above.
566	*/
567	rtSha512BlockInitBuffered(pCtx);
568	rtSha512BlockProcess(pCtx);
569
570	/*
571	* Convert the byte order of the hash words and we're done.
572	*/
573	pCtx->AltPrivate.auH[0] = RT_H2BE_U64(pCtx->AltPrivate.auH[0]);
574	pCtx->AltPrivate.auH[1] = RT_H2BE_U64(pCtx->AltPrivate.auH[1]);
575	pCtx->AltPrivate.auH[2] = RT_H2BE_U64(pCtx->AltPrivate.auH[2]);
576	pCtx->AltPrivate.auH[3] = RT_H2BE_U64(pCtx->AltPrivate.auH[3]);
577	pCtx->AltPrivate.auH[4] = RT_H2BE_U64(pCtx->AltPrivate.auH[4]);
578	pCtx->AltPrivate.auH[5] = RT_H2BE_U64(pCtx->AltPrivate.auH[5]);
579	pCtx->AltPrivate.auH[6] = RT_H2BE_U64(pCtx->AltPrivate.auH[6]);
580	pCtx->AltPrivate.auH[7] = RT_H2BE_U64(pCtx->AltPrivate.auH[7]);
581
582	RT_ZERO(pCtx->AltPrivate.auW);
583	pCtx->AltPrivate.cbMessage.s.Lo = UINT64_MAX;
584	pCtx->AltPrivate.cbMessage.s.Hi = UINT64_MAX;
585	}
586	RT_EXPORT_SYMBOL(RTSha512Final);
587
588
589	RTDECL(void) RTSha512Final(PRTSHA512CONTEXT pCtx, uint8_t pabDigest[RTSHA512_HASH_SIZE])
590	{
591	rtSha512FinalInternal(pCtx);
592	memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA512_HASH_SIZE);
593	RT_ZERO(pCtx->AltPrivate.auH);
594	}
595	RT_EXPORT_SYMBOL(RTSha512Final);
596
597
598	RTDECL(void) RTSha512(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA512_HASH_SIZE])
599	{
600	RTSHA512CONTEXT Ctx;
601	RTSha512Init(&Ctx);
602	RTSha512Update(&Ctx, pvBuf, cbBuf);
603	RTSha512Final(&Ctx, pabDigest);
604	}
605	RT_EXPORT_SYMBOL(RTSha512);
606
607
608	RTDECL(bool) RTSha512Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA512_HASH_SIZE])
609	{
610	RTSHA512CONTEXT Ctx;
611	RTSha512Init(&Ctx);
612	RTSha512Update(&Ctx, pvBuf, cbBuf);
613	rtSha512FinalInternal(&Ctx);
614
615	bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA512_HASH_SIZE) == 0;
616
617	RT_ZERO(Ctx.AltPrivate.auH);
618	return fRet;
619	}
620	RT_EXPORT_SYMBOL(RTSha512Check);
621
622
623
624	/*
625	* SHA-384 is just SHA-512 with different initial values an a truncated result.
626	*/
627
628	RTDECL(void) RTSha384Init(PRTSHA384CONTEXT pCtx)
629	{
630	pCtx->AltPrivate.cbMessage.s.Lo = 0;
631	pCtx->AltPrivate.cbMessage.s.Hi = 0;
632	pCtx->AltPrivate.auH[0] = UINT64_C(0xcbbb9d5dc1059ed8);
633	pCtx->AltPrivate.auH[1] = UINT64_C(0x629a292a367cd507);
634	pCtx->AltPrivate.auH[2] = UINT64_C(0x9159015a3070dd17);
635	pCtx->AltPrivate.auH[3] = UINT64_C(0x152fecd8f70e5939);
636	pCtx->AltPrivate.auH[4] = UINT64_C(0x67332667ffc00b31);
637	pCtx->AltPrivate.auH[5] = UINT64_C(0x8eb44a8768581511);
638	pCtx->AltPrivate.auH[6] = UINT64_C(0xdb0c2e0d64f98fa7);
639	pCtx->AltPrivate.auH[7] = UINT64_C(0x47b5481dbefa4fa4);
640	}
641	RT_EXPORT_SYMBOL(RTSha384Init);
642
643
644	RTDECL(void) RTSha384Update(PRTSHA384CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
645	{
646	RTSha512Update(pCtx, pvBuf, cbBuf);
647	}
648	RT_EXPORT_SYMBOL(RTSha384Update);
649
650
651	RTDECL(void) RTSha384Final(PRTSHA384CONTEXT pCtx, uint8_t pabDigest[RTSHA384_HASH_SIZE])
652	{
653	rtSha512FinalInternal(pCtx);
654	memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA384_HASH_SIZE);
655	RT_ZERO(pCtx->AltPrivate.auH);
656	}
657	RT_EXPORT_SYMBOL(RTSha384Final);
658
659
660	RTDECL(void) RTSha384(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA384_HASH_SIZE])
661	{
662	RTSHA384CONTEXT Ctx;
663	RTSha384Init(&Ctx);
664	RTSha384Update(&Ctx, pvBuf, cbBuf);
665	RTSha384Final(&Ctx, pabDigest);
666	}
667	RT_EXPORT_SYMBOL(RTSha384);
668
669
670	RTDECL(bool) RTSha384Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA384_HASH_SIZE])
671	{
672	RTSHA384CONTEXT Ctx;
673	RTSha384Init(&Ctx);
674	RTSha384Update(&Ctx, pvBuf, cbBuf);
675	rtSha512FinalInternal(&Ctx);
676
677	bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA384_HASH_SIZE) == 0;
678
679	RT_ZERO(Ctx.AltPrivate.auH);
680	return fRet;
681	}
682	RT_EXPORT_SYMBOL(RTSha384Check);
683
684
685	/*
686	* SHA-512/224 is just SHA-512 with different initial values an a truncated result.
687	*/
688
689	RTDECL(void) RTSha512t224Init(PRTSHA512T224CONTEXT pCtx)
690	{
691	pCtx->AltPrivate.cbMessage.s.Lo = 0;
692	pCtx->AltPrivate.cbMessage.s.Hi = 0;
693	pCtx->AltPrivate.auH[0] = UINT64_C(0x8c3d37c819544da2);
694	pCtx->AltPrivate.auH[1] = UINT64_C(0x73e1996689dcd4d6);
695	pCtx->AltPrivate.auH[2] = UINT64_C(0x1dfab7ae32ff9c82);
696	pCtx->AltPrivate.auH[3] = UINT64_C(0x679dd514582f9fcf);
697	pCtx->AltPrivate.auH[4] = UINT64_C(0x0f6d2b697bd44da8);
698	pCtx->AltPrivate.auH[5] = UINT64_C(0x77e36f7304c48942);
699	pCtx->AltPrivate.auH[6] = UINT64_C(0x3f9d85a86a1d36c8);
700	pCtx->AltPrivate.auH[7] = UINT64_C(0x1112e6ad91d692a1);
701	}
702	RT_EXPORT_SYMBOL(RTSha512t224Init);
703
704
705	RTDECL(void) RTSha512t224Update(PRTSHA512T224CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
706	{
707	RTSha512Update(pCtx, pvBuf, cbBuf);
708	}
709	RT_EXPORT_SYMBOL(RTSha512t224Update);
710
711
712	RTDECL(void) RTSha512t224Final(PRTSHA512T224CONTEXT pCtx, uint8_t pabDigest[RTSHA512T224_HASH_SIZE])
713	{
714	rtSha512FinalInternal(pCtx);
715	memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA512T224_HASH_SIZE);
716	RT_ZERO(pCtx->AltPrivate.auH);
717	}
718	RT_EXPORT_SYMBOL(RTSha512t224Final);
719
720
721	RTDECL(void) RTSha512t224(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA512T224_HASH_SIZE])
722	{
723	RTSHA512T224CONTEXT Ctx;
724	RTSha512t224Init(&Ctx);
725	RTSha512t224Update(&Ctx, pvBuf, cbBuf);
726	RTSha512t224Final(&Ctx, pabDigest);
727	}
728	RT_EXPORT_SYMBOL(RTSha512t224);
729
730
731	RTDECL(bool) RTSha512t224Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA512T224_HASH_SIZE])
732	{
733	RTSHA512T224CONTEXT Ctx;
734	RTSha512t224Init(&Ctx);
735	RTSha512t224Update(&Ctx, pvBuf, cbBuf);
736	rtSha512FinalInternal(&Ctx);
737
738	bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA512T224_HASH_SIZE) == 0;
739
740	RT_ZERO(Ctx.AltPrivate.auH);
741	return fRet;
742	}
743	RT_EXPORT_SYMBOL(RTSha512t224Check);
744
745
746	/*
747	* SHA-512/256 is just SHA-512 with different initial values an a truncated result.
748	*/
749
750	RTDECL(void) RTSha512t256Init(PRTSHA512T256CONTEXT pCtx)
751	{
752	pCtx->AltPrivate.cbMessage.s.Lo = 0;
753	pCtx->AltPrivate.cbMessage.s.Hi = 0;
754	pCtx->AltPrivate.auH[0] = UINT64_C(0x22312194fc2bf72c);
755	pCtx->AltPrivate.auH[1] = UINT64_C(0x9f555fa3c84c64c2);
756	pCtx->AltPrivate.auH[2] = UINT64_C(0x2393b86b6f53b151);
757	pCtx->AltPrivate.auH[3] = UINT64_C(0x963877195940eabd);
758	pCtx->AltPrivate.auH[4] = UINT64_C(0x96283ee2a88effe3);
759	pCtx->AltPrivate.auH[5] = UINT64_C(0xbe5e1e2553863992);
760	pCtx->AltPrivate.auH[6] = UINT64_C(0x2b0199fc2c85b8aa);
761	pCtx->AltPrivate.auH[7] = UINT64_C(0x0eb72ddc81c52ca2);
762	}
763	RT_EXPORT_SYMBOL(RTSha512t256Init);
764
765
766	RTDECL(void) RTSha512t256Update(PRTSHA512T256CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
767	{
768	RTSha512Update(pCtx, pvBuf, cbBuf);
769	}
770	RT_EXPORT_SYMBOL(RTSha512t256Update);
771
772
773	RTDECL(void) RTSha512t256Final(PRTSHA512T256CONTEXT pCtx, uint8_t pabDigest[RTSHA512T256_HASH_SIZE])
774	{
775	rtSha512FinalInternal(pCtx);
776	memcpy(pabDigest, &pCtx->AltPrivate.auH[0], RTSHA512T256_HASH_SIZE);
777	RT_ZERO(pCtx->AltPrivate.auH);
778	}
779	RT_EXPORT_SYMBOL(RTSha512t256Final);
780
781
782	RTDECL(void) RTSha512t256(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA512T256_HASH_SIZE])
783	{
784	RTSHA512T256CONTEXT Ctx;
785	RTSha512t256Init(&Ctx);
786	RTSha512t256Update(&Ctx, pvBuf, cbBuf);
787	RTSha512t256Final(&Ctx, pabDigest);
788	}
789	RT_EXPORT_SYMBOL(RTSha512t256);
790
791
792	RTDECL(bool) RTSha512t256Check(const void *pvBuf, size_t cbBuf, uint8_t const pabHash[RTSHA512T256_HASH_SIZE])
793	{
794	RTSHA512T256CONTEXT Ctx;
795	RTSha512t256Init(&Ctx);
796	RTSha512t256Update(&Ctx, pvBuf, cbBuf);
797	rtSha512FinalInternal(&Ctx);
798
799	bool fRet = memcmp(pabHash, &Ctx.AltPrivate.auH[0], RTSHA512T256_HASH_SIZE) == 0;
800
801	RT_ZERO(Ctx.AltPrivate.auH);
802	return fRet;
803	}
804	RT_EXPORT_SYMBOL(RTSha512t256Check);
805

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source: vbox/trunk/src/VBox/Runtime/common/checksum/alt-sha512.cpp@ 106580

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