cryptography for developers 2006 phần 10 doc

... Chapter 9 385 404_CRYPTO_09.qxd 10/ 30/06 2:57 PM Page 385 Index 417 messages, 188 LFSRs (Linear Feedback Shift Registers) description, 104 105 large, 107 table-based, 105 107 Libraries, public-domain ... is incorrect. PKCS #1 Key Format PKCS #1 specifies two key formats for RSA keys; one is meant for public keys, and the other is meant for private keys.The public key format is th...

Ngày tải lên: 12/08/2014, 20:22

... trading time for memory. (This also will help against certain forms of timing attacks as discussed later.) The inverse of MixColumns is the transform shown in Figure 4 .10. Figure 4 .10 The AES ... 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 algorithm w...

Ngày tải lên: 12/08/2014, 20:22

... Questions 404_CRYPTO_06.qxd 10/ 30/06 10: 19 AM Page 251 104 int main(void) 105 { 106 static const struct { 107 unsigned char key[128]; 108 unsigned long keylen; 109 unsigned char data[128]; 110 unsigned long ... caller. 100 /* copy tag */ 101 for (i = 0; i < 16 && i < taglen; i++) { 102 tag[i] = cmac->C[i]; 103 } 104 } 105 106 void cmac_memory(const unsign...

Ngày tải lên: 12/08/2014, 20:22

... assemblies DLL Hell, 9 docking basic, 94–95 with dock padding, 95 Document Object Model (DOM), 309 document view applications. See MDI DoWork, BackgroundWorker event, 361–362 DrawImage method, for printing, ... event, 108 startup form, 108 StartupNextInstance, Application event, 109 state management overview, 414–415 session state, 411–413 view state, 403 bvbIX_03.fm Page 486 Tuesday...

Ngày tải lên: 13/08/2014, 08:21

... E-BOOKS For readers who can’t wait for hard copy, we offer most of our titles in download- able Adobe PDF form. These e-books are often available weeks before hard copies, and are priced affordably. SYNGRESS ... but merely a requirement for the product to be useful. For example, banking hardly requires cryptography to function; you can easily hand someone $10 without first performin...

Ngày tải lên: 12/08/2014, 20:22

... 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, ... in data packets without forcing the user (or third-party user) to figure out the “magic decoding” of algorithm types. The dotted decimal format is straightforward except for two rules: ■ The fir...

Ngày tải lên: 12/08/2014, 20:22

... 3.2 Sample Output of the timer_bit Routine 0 0100 0101 01 1101 0 0101 000 1101 1 1100 100 0101 1101 11111 If we continued, we would likely see that there is some form of bias, but at the very least, the entropy ... perform the mixing. 099 static void rng_churn_data(void) 100 { 101 unsigned char buf[64]; 102 unsigned long x, y; 103 104 /* update churn count and mix in */ 105 state[0] ^...

Ngày tải lên: 12/08/2014, 20:22

... TE0(,%ebx,4), %esi 109 3 movl %ebp, %ebx 109 4 rorl $24, %eax 109 5 xorl %eax, %esi 109 6 movzbl %bh, %eax 109 7 movl 4(%esp), %ebx 109 8 movl TE0(,%eax,4), %eax 109 9 shrl $24, %ebx 1100 rorl $16, %eax 1101 xorl ... Standard 404_CRYPTO_04.qxd 10/ 30/06 9:42 AM Page 166 108 6 shrl $24, %ebx 108 7 andl $255, %eax 108 8 movl TE0(,%eax,4), %esi 108 9 movzbl %cl,%eax 109 0 movl TE0...

Ngày tải lên: 12/08/2014, 20:22

... M2 Compute Hash 404_CRYPTO_05.qxd 10/ 30/06 10: 35 AM Page 205 105 /* update state */ 106 md->S[0] += a; 107 md->S[1] += b; 108 md->S[2] += c; 109 md->S[3] += d; 110 md->S[4] += e; 111 md->S[5] ... compress them when 64 bytes have accumulated. 105 unsigned long x, y; 106 107 while (len) { 108 x = (64 - md->buflen) < len ? 64 - md->buflen : len; 109 len -...

Ngày tải lên: 12/08/2014, 20:22

... HMAC function for C developers. Crypto++ provides similar functionality for C++ developers. Limited HMAC support is also found in OpenSSL. LibTomCrypt also provides modular support for CMAC. At ... browse to www.syngress.com/solutions and click on the “Ask the Author” form. 404_CRYPTO_06.qxd 10/ 30/06 10: 20 AM Page 293 010 int x, y; 011 XMEMCPY(T, &gcm->PC[0][I[0]][0], 16...

Ngày tải lên: 12/08/2014, 20:22