cryptography for developers 2006 phần 1 potx
cryptography for developers 2006 phần 1 potx
... Chapter 1 17
404_CRYPTO_ 01. qxd 10 /27/06 4:40 PM Page 17
as 2
nd
pre-image resistance (Figure 1. 4) is the inability to find two messages M1 (given) and
M2 (chosen at random) such that hash (M1) = ... 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- 59749 -10 4-7
ISBN -13 : 978 -1- 59749 -10 4-4
Publisher: Andrew Wil...
cryptography for developers 2006 phần 3 potx
... 3.2 Sample Output of the timer_bit Routine
0 010 0 010 1 011 1 010
010 100 011 011 110 0
10 0 010 111 011 111 1
If we continued, we would likely see that there is some form of bias, but at the very
least, the entropy ... 10 /30/06 12 :48 PM Page 96
11 2 sizeof(unsigned long));
11 3 if (list->data == NULL) { goto MEM_ERR; }
11 4
11 5 err = der_oid_decode(in, inlen,
11 6 list->d...
cryptography for developers 2006 phần 6 potx
... == 0) {
11 1 sha1_compress(md, buf);
11 2 buf += 64;
11 3 md->msglen += 64;
11 4 len -= 64;
11 5 }
11 6
11 7 x = (64 - md->buflen) < len ? 64 - md->buflen : len;
11 8 len -= x;
11 9
12 0 /* copy ... proceed.
11 1 /* copy x bytes from buf to the buffer */
11 2 for (y = 0; y < x; y++) {
11 3 md->buf[md->buflen++] = *buf++;
11 4 }
11 5
11 6 if (md->buflen ==...
cryptography for developers 2006 phần 9 potx
... (1& lt;<6) : 0) |
12 3 (((*taglen - 2)>> ;1) <<3) |
12 4 (L -1) ;
12 5
12 6 /* nonce */
12 7 for (y = 0; y < (16 - (L + 1) ); y++) {
12 8 PAD[x++] = nonce[y];
12 9 }
13 0
13 1 /* store len */
13 2 len = ... Authenticate Modes
404_CRYPTO_07.qxd 10 /30/06 11 : 51 AM Page 342
404_CRYPTO_07.qxd 10 /30/06 11 : 51 AM Page 348
19 1 PAD, PAD, skey)) != CRYPT_OK) {...
cryptography for developers 2006 phần 2 pdf
... -1;
010 }
011
012 /* store header and length */
013 der_put_header_length(&out, ASN1_DER_OCTETSTRING,
014 noctets, outlen);
015
016 /* store bytes */
017 memcpy(out, octets, noctets);
018
019 ... return -1;
009 }
010
011 /* store header and length */
012 der_put_header_length(&out, ASN1_DER_BOOLEAN, 1) ;
013
014 /* store payload */
015 *out = (bool == 0) ? 0x00...
cryptography for developers 2006 phần 4 docx
... 1 0 0 0 1 1 x 0
1 1 1 1 0 0 0 1 x 0
1 1 1 1 1 0 0 0 x 0
0 1 1 1 1 1 0 0 x 1
0 0 1 1 1 1 1 0 x 1
0 0 0 1 1 1 1 1 x 0
0
1
2
3
4
5
6
7
+
404_CRYPTO_04.qxd 10 /30/06 9:42 AM Page 14 7
■
USB, PS/2, ... 1, 3
2,0 2 ,1 2,2 2,3
3,0 3 ,1 3,2 3,3
b b b b
b b b b
b b b b
b b b b
0,0 0 ,1 0,2 0,3
1, 0 1, 1 1, 2 1, 3
2,0 2 ,1 2,2 2,3
3,0 3 ,1 3,2 3,3
SubB...
cryptography for developers 2006 phần 5 ppt
... chooses.
11 0 unsigned long s0, s1, s2, s3, t0, t1, t2, t3, *rk;
11 1 int r;
11 2
11 3 rk = skey;
11 4
11 5 /*
11 6 * map byte array block to cipher state
11 7 * and add initial round key:
11 8 */
11 9 LOAD32H(s0, ... 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
2 01 0x10, 0x 11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
202 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
203 { 0x00, 0x 11, 0x22, 0x3...
cryptography for developers 2006 phần 7 doc
... < CTRLEN; x++) {
11 7 IV[x] = stream->channels[0].PktCTR[x];
11 8 }
11 9 for (; x < 16 ; x++) {
12 0 IV[x] = 0;
12 1 }
12 2
12 3 /* set IV */
12 4 if ((err = ctr_setiv(IV, 16 ,
12 5 &stream->channels[0].skey)) ... unsigned long keylen;
10 9 unsigned char data [12 8];
11 0 unsigned long datalen;
11 1 unsigned char tag[20];
11 2 } tests[] = {
11 3 {
11 4 {0x0c...
cryptography for developers 2006 phần 8 ppsx
... 289
404_CRYPTO_06.qxd 10 /30/06 10 :20 AM Page 289
17 7 * 7, 11 , 13 , 14 , 15 */
17 8 B[M(7)][i] = B[M(3)][i] ^ B[M(4)][i];
17 9 B[M (11 )][i] = B[M(3)][i] ^ B[M(8)][i];
18 0 B[M (13 )][i] = B[M (1) ][i] ^ B[M (12 )][i];
18 1 B[M (14 )][i] ... B[M (1) ][0] >> 1;
15 8 B[M(4)][0] = B[M (1) ][0] >> 2;
15 9 B[M(8)][0] = B[M (1) ][0] >> 3;
16 0 for (i = 1; i &l...
cryptography for developers 2006 phần 10 doc
... key schedule, 18 0 18 1
key schedule, 16 9 17 4
macros, 16 8 16 9
optimization, 16 5
performance, 17 4 17 5
performance, ARM, 17 6 17 7
performance, small variant, 17 8 18 0
performance, X86, 17 4 17 6
precomputed ... math, 14 4 14 6
inverse cipher, 15 5
key schedule, 15 5 15 6, 16 5
last round, 15 5
lossy channels, 19 5 19 6
MixColumns function, 15 1 15 4
myths, 19 6
Osvik at...
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