Mercurial > trustbridge > nss-cmake-static

annotate nss/lib/freebl/ctr.c @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 #ifdef FREEBL_NO_DEPEND
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6 #include "stubs.h"
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7 #endif
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8 #include "prtypes.h"
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9 #include "blapit.h"
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10 #include "blapii.h"
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11 #include "ctr.h"
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12 #include "pkcs11t.h"
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13 #include "secerr.h"
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14
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15 #ifdef USE_HW_AES
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16 #include "intel-aes.h"
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17 #include "rijndael.h"
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18 #endif
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19
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20 SECStatus
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21 CTR_InitContext(CTRContext *ctr, void *context, freeblCipherFunc cipher,
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22 const unsigned char *param, unsigned int blocksize)
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23 {
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24 const CK_AES_CTR_PARAMS *ctrParams = (const CK_AES_CTR_PARAMS *)param;
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25
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26 if (ctrParams->ulCounterBits == 0 ||
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27 ctrParams->ulCounterBits > blocksize * PR_BITS_PER_BYTE) {
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28 PORT_SetError(SEC_ERROR_INVALID_ARGS);
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29 return SECFailure;
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30 }
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31
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32 /* Invariant: 0 < ctr->bufPtr <= blocksize */
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33 ctr->bufPtr = blocksize; /* no unused data in the buffer */
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34 ctr->cipher = cipher;
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35 ctr->context = context;
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36 ctr->counterBits = ctrParams->ulCounterBits;
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37 if (blocksize > sizeof(ctr->counter) ||
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38 blocksize > sizeof(ctrParams->cb)) {
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39 PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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40 return SECFailure;
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41 }
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42 PORT_Memcpy(ctr->counter, ctrParams->cb, blocksize);
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43 return SECSuccess;
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44 }
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45
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46 CTRContext *
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47 CTR_CreateContext(void *context, freeblCipherFunc cipher,
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48 const unsigned char *param, unsigned int blocksize)
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49 {
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50 CTRContext *ctr;
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51 SECStatus rv;
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52
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53 /* first fill in the Counter context */
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54 ctr = PORT_ZNew(CTRContext);
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55 if (ctr == NULL) {
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56 return NULL;
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57 }
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58 rv = CTR_InitContext(ctr, context, cipher, param, blocksize);
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59 if (rv != SECSuccess) {
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60 CTR_DestroyContext(ctr, PR_TRUE);
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61 ctr = NULL;
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62 }
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63 return ctr;
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64 }
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65
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66 void
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67 CTR_DestroyContext(CTRContext *ctr, PRBool freeit)
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68 {
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69 PORT_Memset(ctr, 0, sizeof(CTRContext));
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70 if (freeit) {
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71 PORT_Free(ctr);
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72 }
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73 }
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74
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75 /*
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76 * Used by counter mode. Increment the counter block. Not all bits in the
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77 * counter block are part of the counter, counterBits tells how many bits
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78 * are part of the counter. The counter block is blocksize long. It's a
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79 * big endian value.
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80 *
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81 * XXX Does not handle counter rollover.
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82 */
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83 static void
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84 ctr_GetNextCtr(unsigned char *counter, unsigned int counterBits,
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85 unsigned int blocksize)
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86 {
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87 unsigned char *counterPtr = counter + blocksize - 1;
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88 unsigned char mask, count;
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89
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90 PORT_Assert(counterBits <= blocksize*PR_BITS_PER_BYTE);
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91 while (counterBits >= PR_BITS_PER_BYTE) {
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92 if (++(*(counterPtr--))) {
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93 return;
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94 }
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95 counterBits -= PR_BITS_PER_BYTE;
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96 }
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97 if (counterBits == 0) {
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98 return;
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99 }
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100 /* increment the final partial byte */
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101 mask = (1 << counterBits)-1;
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102 count = ++(*counterPtr) & mask;
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103 *counterPtr = ((*counterPtr) & ~mask) | count;
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104 return;
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105 }
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106
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107 static void
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108 ctr_xor(unsigned char *target, const unsigned char *x,
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109 const unsigned char *y, unsigned int count)
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110 {
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111 unsigned int i;
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112 for (i=0; i < count; i++) {
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113 *target++ = *x++ ^ *y++;
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114 }
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115 }
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116
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117 SECStatus
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118 CTR_Update(CTRContext *ctr, unsigned char *outbuf,
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119 unsigned int *outlen, unsigned int maxout,
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120 const unsigned char *inbuf, unsigned int inlen,
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121 unsigned int blocksize)
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122 {
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123 unsigned int tmp;
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124 SECStatus rv;
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125
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126 if (maxout < inlen) {
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127 *outlen = inlen;
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128 PORT_SetError(SEC_ERROR_OUTPUT_LEN);
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129 return SECFailure;
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130 }
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131 *outlen = 0;
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132 if (ctr->bufPtr != blocksize) {
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133 unsigned int needed = PR_MIN(blocksize-ctr->bufPtr, inlen);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
134 ctr_xor(outbuf, inbuf, ctr->buffer + ctr->bufPtr, needed);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
135 ctr->bufPtr += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
136 outbuf += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
137 inbuf += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
138 *outlen += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
139 inlen -= needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
140 if (inlen == 0) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
141 return SECSuccess;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
142 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
143 PORT_Assert(ctr->bufPtr == blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
144 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
145
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
146 while (inlen >= blocksize) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
147 rv = (*ctr->cipher)(ctr->context, ctr->buffer, &tmp, blocksize,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
148 ctr->counter, blocksize, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
149 ctr_GetNextCtr(ctr->counter, ctr->counterBits, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
150 if (rv != SECSuccess) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
151 return SECFailure;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
152 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
153 ctr_xor(outbuf, inbuf, ctr->buffer, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
154 outbuf += blocksize;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
155 inbuf += blocksize;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
156 *outlen += blocksize;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
157 inlen -= blocksize;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
158 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
159 if (inlen == 0) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
160 return SECSuccess;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
161 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
162 rv = (*ctr->cipher)(ctr->context, ctr->buffer, &tmp, blocksize,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
163 ctr->counter, blocksize, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
164 ctr_GetNextCtr(ctr->counter, ctr->counterBits, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
165 if (rv != SECSuccess) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
166 return SECFailure;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
167 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
168 ctr_xor(outbuf, inbuf, ctr->buffer, inlen);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
169 ctr->bufPtr = inlen;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
170 *outlen += inlen;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
171 return SECSuccess;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
172 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
173
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
174 #if defined(USE_HW_AES) && defined(_MSC_VER)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
175 SECStatus
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
176 CTR_Update_HW_AES(CTRContext *ctr, unsigned char *outbuf,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
177 unsigned int *outlen, unsigned int maxout,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
178 const unsigned char *inbuf, unsigned int inlen,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
179 unsigned int blocksize)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
180 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
181 unsigned int fullblocks;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
182 unsigned int tmp;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
183 SECStatus rv;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
184
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
185 if (maxout < inlen) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
186 *outlen = inlen;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
187 PORT_SetError(SEC_ERROR_OUTPUT_LEN);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
188 return SECFailure;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
189 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
190 *outlen = 0;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
191 if (ctr->bufPtr != blocksize) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
192 unsigned int needed = PR_MIN(blocksize-ctr->bufPtr, inlen);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
193 ctr_xor(outbuf, inbuf, ctr->buffer + ctr->bufPtr, needed);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
194 ctr->bufPtr += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
195 outbuf += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
196 inbuf += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
197 *outlen += needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
198 inlen -= needed;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
199 if (inlen == 0) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
200 return SECSuccess;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
201 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
202 PORT_Assert(ctr->bufPtr == blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
203 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
204
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
205 intel_aes_ctr_worker(((AESContext*)(ctr->context))->Nr)(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
206 ctr, outbuf, outlen, maxout, inbuf, inlen, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
207 /* XXX intel_aes_ctr_worker should set *outlen. */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
208 PORT_Assert(*outlen == 0);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
209 fullblocks = (inlen/blocksize)*blocksize;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
210 *outlen += fullblocks;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
211 outbuf += fullblocks;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
212 inbuf += fullblocks;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
213 inlen -= fullblocks;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
214
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
215 if (inlen == 0) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
216 return SECSuccess;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
217 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
218 rv = (*ctr->cipher)(ctr->context, ctr->buffer, &tmp, blocksize,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
219 ctr->counter, blocksize, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
220 ctr_GetNextCtr(ctr->counter, ctr->counterBits, blocksize);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
221 if (rv != SECSuccess) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
222 return SECFailure;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
223 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
224 ctr_xor(outbuf, inbuf, ctr->buffer, inlen);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
225 ctr->bufPtr = inlen;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
226 *outlen += inlen;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
227 return SECSuccess;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
228 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
229 #endif
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