cryptography for developers 2006 phần 9 potx

... error; 2 89 } 290 CTRlen = 0; 291 } 292 293 /* if we encrypt we add the bytes to the MAC first */ 294 if (direction == CCM_ENCRYPT) { 295 b = pt[y]; 296 ct[y] = b ^ CTRPAD[CTRlen++]; 297 } else { 298 ... CBC-MAC pad performs the required MAC operation for this 16-byte block of plaintext. 247 } else { 248 for (; y < (ptlen & ~15); y += 16) { 2 49 /* increment the ctr? */...

Ngày tải lên: 12/08/2014, 20:22

... SERIAL NUMBER 001 HJIRTCV764 002 PO9873D5FG 003 829KM8NJH2 004 GPPQQW722M 005 CVPLQ6WQ23 006 VBP965T5T5 007 HJJJ863WD3E 008 298 7GVTWMK 0 09 629MP5SDJT 010 IMWQ 295 T6T PUBLISHED BY Syngress Publishing, ... executed in a computer system, but they may not be reproduced for publication. 1 2 3 4 5 6 7 8 9 0 ISBN-10: 1- 597 49- 104-7 ISBN-13: 97 8-1- 597 49- 104-4 Publisher: Andrew William...

Ngày tải lên: 12/08/2014, 20:22

... ASN1_DER_SEQUENCE: 0 89 x = *outlen; 090 err = der_sequence_encode(list[i].data, 091 list[i].length, 092 out, &x); 093 if (err < 0) return err; 094 out += x; 095 break; 096 default: 097 return -1; 098 } 099 ... & 0xFF]; 088 0 89 /* credit the bits */ 090 bit_count += entropy; 091 092 /* we use a .4 fixed point representation for entropy */ 093 if (bit_count >=...

Ngày tải lên: 12/08/2014, 20:22

... CONST64(0x80deb1fe3b1 696 b1), 0 59 CONST64(0x9bdc06a725c71235), CONST64(0xc19bf174cf 692 694 ), 060 CONST64(0xe49b69c19ef14ad2), CONST64(0xefbe4786384f25e3), 061 CONST64(0x0fc19dc68b8cd5b5), CONST64(0x240ca1cc77ac9c65), 062 ... 112) { 1 89 while (md->buflen < 128) { 190 md->buf[md->buflen++] = 0x00; 191 } 192 sha512_compress(md); 193 md->buflen = 0; 194 } 195 196 /* now...

Ngày tải lên: 12/08/2014, 20:22

... page for the Blog application is shown in Listing 11-2. The code- behind file for this Master Page has no methods, so it isn’t shown here. 390 Part V: Building Community Applications 19_ 597 760 ... /> </SelectParameters> (continued) 357 Chapter 10: Building a Web Forum 18_ 597 760 ch10.qxp 1/11/06 9: 59 PM Page 357 EventArgs e) { string con = WebConfigurationManager ➝ 5 .C...

Ngày tải lên: 05/08/2014, 10:20

... is large enough before calling this.The function maintains an internal copy of the output pointer in ptr and copies it out before exiting.This was performed not strictly for performance reasons, ... opens an exception for numbers of the form –(256 k )/2, which would be redun- dantly encoded with leading 0xFF 80 bytes, which is forbidden by the ASN.1 DER specifi- cation. 0 39 unsigned long...

Ngày tải lên: 12/08/2014, 20:22

... Standard 14 11 13 9 a 9 14 11 13 a 13 9 14 11 a 11 13 9 14 a 0 1 2 3 404_CRYPTO_04.qxd 10/30/06 9: 42 AM Page 154 Figure 4.4 AES SubBytes Function Figure 4.5 AES Affine Transformation There are several ... clocked twice to re-key itself for the next usage. In the design of Fortuna they use an AES candidate cipher; we can just use AES for this (Fortuna was described before the AES...

Ngày tải lên: 12/08/2014, 20:22

... 0xdfdfdfdfUL, 144 0x8c8c8c8cUL, 0xa1a1a1a1UL, 0x 898 9 898 9UL, 0x0d0d0d0dUL, 145 0xbfbfbfbfUL, 0xe6e6e6e6UL, 0x42424242UL, 0x68686868UL, 146 0x41414141UL, 0x 999 999 99UL, 0x2d2d2d2dUL, 0x0f0f0f0fUL, 147 0xb0b0b0b0UL, ... 0x77, 194 0x88, 0x 99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff }, 195 { 0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, 196 0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d, 0x71, 0x91 }...

Ngày tải lên: 12/08/2014, 20:22

... block. 090 } else { 091 /* no, xor K1 */ 092 for (i = 0; i < 16; i++) { 093 cmac->C[i] ^= cmac->L[0][i]; 094 } 095 } Otherwise, if we had a complete block we XOR K1 against the block. 097 ... and Larger “ 1 49 “Than One Block-Size Data”, 73, 150 {0xe8, 0xe9, 0x9d, 0x0f, 0x45, 0x23, 0x7d, 0x78, 151 0x6d, 0x6b, 0xba, 0xa7, 0x96, 0x5c, 0x78, 0x08, 152 0xbb, 0xff, 0x1a, 0x91}...

Ngày tải lên: 12/08/2014, 20:22

... */ 188 /* for each nibble */ 1 89 for (i = (BPD/4)-1; i >= 0; i ) { 190 /* for each word */ 191 for (j = 0; j < (int)(WPV-1); j++) { 192 /* grab the 4 bits recall the nibbles are 193 backwards ... CTRLEN); 1 89 memcpy(stream->channels[1].PktCTR, in, CTRLEN); 190 191 /* set IV */ 192 if ((err = ctr_setiv(IV, 16, 193 &stream->channels[1].skey)) != CRYPT_OK) {...

Ngày tải lên: 12/08/2014, 20:22