Problem - Kevin Tafuro

Recommendations

Info

Note that we check to ensure strings are properly padded. If the string isn’t properly padded or otherwise terminates prematurely, we return an error. #include #include static char b64revtb[256] = { -3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*0-15*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*16-31*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, /*32-47*/ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -2, -1, -1, /*48-63*/ -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /*64-79*/ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, /*80-95*/ -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, /*96-111*/ 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, /*112-127*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*128-143*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*144-159*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*160-175*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*176-191*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*192-207*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*208-223*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*224-239*/ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /*240-255*/ }; static unsigned int raw_base64_decode(unsigned char *in, unsigned char *out, int strict, int *err) { unsigned int result = 0, x; unsigned char buf[3], *p = in, pad = 0; *err = 0; while (!pad) { switch ((x = b64revtb[*p++])) { case -3: /* NULL TERMINATOR */ if (((p - 1) - in) % 4) *err = 1; return result; case -2: /* PADDING CHARACTER. INVALID HERE */ if (((p - 1) - in) % 4 < 2) { *err = 1; return result; } else if (((p - 1) - in) % 4 = = 2) { /* Make sure there's appropriate padding */ if (*p != '=') { *err = 1; return result; } buf[2] = 0; pad = 2; result++; break; } else { pad = 1; result += 2; break; 126 | Chapter 4: Symmetric Cryptography Fundamentals This is the Title of the Book, eMatter Edition Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.
} return result; case -1: if (strict) { *err = 2; return result; } break; default: switch (((p - 1) - in) % 4) { case 0: buf[0] = x > 4); buf[1] = x > 2); buf[2] = x
Page 3 and 4:
Secure Programming Cookbook ΤΜ fo
Page 5 and 6:
Secure Programming CookbookΤΜ for
Page 7 and 8:
Table of Contents Foreword . . . .
Page 9 and 10:
5.8 Using a Generic OFB Mode Implem
Page 11 and 12:
8.10 Performing Password-Based Auth
Page 13:
12.10 Restructuring Arrays 672 12.1
Page 16 and 17:
they are in the top 50% of safe dri
Page 18 and 19:
think you are in, you will probably
Page 20 and 21:
the C programming language, with so
Page 22 and 23:
igger risks than anticipated. You s
Page 24 and 25:
Recipe Compatibility Most of the re
Page 26 and 27:
The O’Reilly web site for the boo
Page 29 and 30:
Chapter 1 CHAPTER 1 Safe Initializa
Page 31 and 32:
using the code in this recipe on Wi
Page 33 and 34:
variables you preserve, be sure to
Page 35 and 36:
ptr = (char *)new_environ + (arr_si
Page 37 and 38:
an impersonation token for a thread
Page 39 and 40:
Creating a new process with a restr
Page 41 and 42:
array that is the Privileges field.
Page 43 and 44:
eturn 0; } if (!LookupAccountName(0
Page 45 and 46:
privileges. We strongly advise agai
Page 47 and 48:
#include #include #include #incl
Page 49 and 50:
sockets provide a means by which fi
Page 51 and 52:
The privman library provides a numb
Page 53 and 54:
The potential for security vulnerab
Page 55 and 56:
It’s important to remember that t
Page 57 and 58:
Discussion execve( ) is the system
Page 59 and 60:
should call pclose( ) to clean up t
Page 61 and 62:
dup2(stdout_pipe[1], 1); close(stdo
Page 63 and 64:
lpCommandLine Any command-line argu
Page 65 and 66:
#include #include #include void
Page 67 and 68:
and a saved user ID. * The effectiv
Page 69 and 70:
See Also Recipes 1.3, 1.4, 2.8 2.2
Page 71 and 72:
of the object, regardless of what t
Page 73 and 74:
There are many other situations whe
Page 75 and 76:
if (!(fd = opendir("."))) break; if
Page 77 and 78:
spc_file_wipe( ) A wrapper around t
Page 79 and 80:
if (pattern_pass(fd, buf, sizeof(bu
Page 81 and 82:
CryptReleaseContext(hProvider, 0);
Page 83 and 84:
2.7 Restricting Access Permissions
Page 85 and 86:
eset the umask between your adjustm
Page 87 and 88:
Locking files on Windows Where Unix
Page 89 and 90:
NFS older than Version 3 in particu
Page 91 and 92:
a loop until all the data is read.
Page 93 and 94:
if (!(hResourceLock = CreateMutex(0
Page 95 and 96:
generator. The code presented here
Page 97 and 98:
access to the filesystem, the poten
Page 99 and 100:
Chapter 3 CHAPTER 3 Input Validatio
Page 101 and 102:
components of the system are truste
Page 103 and 104: try to use them. For example, what
Page 105 and 106: To combat malicious uses of “%n
Page 107 and 108: Discussion Buffer overflows get a l
Page 109 and 110: Unfortunately, strlcpy( ) and strlc
Page 111 and 112: The second problem area occurs when
Page 113 and 114: (see Recipe 3.2). The format-string
Page 115 and 116: safestr_release( ) or safestr_free(
Page 117 and 118: Solution Unfortunately, integer coe
Page 119 and 120: which the records begin. Generally,
Page 121 and 122: pointer or a different value altoge
Page 123 and 124: if (!(new_environ = (char **)malloc
Page 125 and 126: if (spc_environ) free(environ); env
Page 127 and 128: GetFullPathName( ) requires the len
Page 129 and 130: if (*c != '%' || !isxdigit(c[1]) ||
Page 131 and 132: 3.10 Preventing Cross-Site Scriptin
Page 133 and 134: * These are HTML tags that do not t
Page 135 and 136: *ptr++ = *c; } while (*++c != ’>
Page 137 and 138: Finally, if you are using the LIKE
Page 139 and 140: Table 3-2. UTF-8 encoding byte sequ
Page 141 and 142: the connections to the server. The
Page 143 and 144: SPC_FD_SET read_mask; for (;;) { sp
Page 145 and 146: To ensure that you choose the right
Page 147 and 148: See Also Recipe 13.2 4.2 Generating
Page 149 and 150: This function takes the following a
Page 151 and 152: } break; default: if (isspace(p[0])
Page 153: *p = 0; return output; } } } The pu
Page 157 and 158: #define MAX_WORDLEN 4 /* len parame
Page 159 and 160: Discussion This function spc_words2
Page 161 and 162: 4.9 Using Salts, Nonces, and Initia
Page 163 and 164: the lifetime of the key; the counte
Page 165 and 166: #include #include #include #incl
Page 167 and 168: #include #include /* This value n
Page 169 and 170: } CryptReleaseContext(hProvider, hK
Page 171 and 172: cryptographic one-way hash from a t
Page 173 and 174: HMAC_CTX c; unsigned long ctr = 0,
Page 175 and 176: database does not support binary st
Page 177 and 178: Remember to use a MAC anytime you e
Page 179 and 180: For many different reasons, it can
Page 181 and 182: A more portable but less accurate w
Page 183 and 184: Chapter 5 CHAPTER 5 Symmetric Encry
Page 185 and 186: Discussion Be sure to read this dis
Page 187 and 188: Pentium III, which should give a go
Page 189 and 190: locations where 40-bit keys or 56-b
Page 191 and 192: can arise. For general-purpose use,
Page 193 and 194: or similar mechanism is used. As wi
Page 195 and 196: shares many properties with CTR mod
Page 197 and 198: case, the faster of the two algorit
Page 199 and 200: parison to standard modes. As of th
Page 201 and 202: work, which severely limits portabi
Page 203 and 204: Table 5-4. Implementations for the
Page 205 and 206:
Plaintext block 1 Plaintext block 2
Page 207 and 208:
typedef struct { SPC_KEY_SCHED ks;
Page 209 and 210:
If you are using padding and you kn
Page 211 and 212:
This function has the following arg
Page 213 and 214:
if (ol) *ol = out - start; return 1
Page 215 and 216:
that the state function is always r
Page 217 and 218:
Note that this code depends on the
Page 219 and 220:
if (!il--) return 1; ctx->nonce[ctx
Page 221 and 222:
one block at a time, by encrypting
Page 223 and 224:
spc_memset(key,0, kl); memcpy(ctx->
Page 225 and 226:
5.9 Using a Generic CTR Mode Implem
Page 227 and 228:
These two functions also erase the
Page 229 and 230:
we ignore that because it will alwa
Page 231 and 232:
Once those bindings are made, the Z
Page 233 and 234:
output Buffer into which the plaint
Page 235 and 236:
eturn the number of valid bytes in
Page 237 and 238:
In CBC, CFB, and OFB modes, encrypt
Page 239 and 240:
void spc_pctr_do_odd(SPC_CTR2_CTX *
Page 241 and 242:
5.15 Performing File or Disk Encryp
Page 243 and 244:
Therefore, we’ll show you LION, b
Page 245 and 246:
} RC4_set_key(&k, HASH_SZ, (char *)
Page 247 and 248:
techniques from Chapter 8), the key
Page 249 and 250:
communicate asynchronously (that is
Page 251 and 252:
key Pointer to the encryption key t
Page 253 and 254:
Table 5-6. Cipher instantiation ref
Page 255 and 256:
While RC2, RC4, and RC5 support abs
Page 257 and 258:
The function EVP_CIPHER_CTX_ctrl( )
Page 259 and 260:
Discussion As a reminder, use a raw
Page 261 and 262:
ol = 0; if (!(ret = (char *)malloc(
Page 263 and 264:
The “official” RC4 key setup fu
Page 265 and 266:
Discussion One-time pads are provab
Page 267 and 268:
Once a provider context has been su
Page 269 and 270:
Table 5-8. Symmetric ciphers suppor
Page 271 and 272:
hKey Key to use for performing the
Page 273 and 274:
if (!CryptAcquireContext(&hProvider
Page 275 and 276:
exportable from key objects, but th
Page 277 and 278:
Chapter 6 CHAPTER 6 Hashes and Mess
Page 279 and 280:
Generally, you should prefer an enc
Page 281 and 282:
See Also Recipes 6.7, 6.8, 6.12 6.2
Page 283 and 284:
Noncorrelation It should also be co
Page 285 and 286:
Let’s look briefly at the pros an
Page 287 and 288:
Solution In most cases, instead of
Page 289 and 290:
MAC (which we recommend), we strong
Page 291 and 292:
Libraries with cryptographic hash f
Page 293 and 294:
#include int main(int argc, char *
Page 295 and 296:
See Also Implementations of SHA-256
Page 297 and 298:
CryptAcquireContext(&hProvider, 0,
Page 299 and 300:
To ensure the best security, we str
Page 301 and 302:
if (!(vfy = (unsigned char *)malloc
Page 303 and 304:
you might use a library such as Ope
Page 305 and 306:
Otherwise, you can use the HMAC imp
Page 307 and 308:
if (klen inner[i] ^= key[i]; ctx->o
Page 309 and 310:
OMAC has been explicitly specified
Page 311 and 312:
unsigned char c1[SPC_BLOCK_SZ]; /*
Page 313 and 314:
ing the all-zero data block. Each p
Page 315 and 316:
CMAC is the message-integrity compo
Page 317 and 318:
To postprocess, we encrypt the hash
Page 319 and 320:
6.15 Constructing a Hash Function f
Page 321 and 322:
unsigned char b[SPC_KEY_SZ]; size_t
Page 323 and 324:
Figure 6-2. The Mayas-Meyer-Oseas c
Page 325 and 326:
c->ix = 0; c->tl = 0; } static void
Page 327 and 328:
modes such as CWC and CCM are start
Page 329 and 330:
authentication in a straightforward
Page 331 and 332:
SPC_HMAC_Reset(&ctx); SPC_HMAC_Upda
Page 333 and 334:
divide up the data stream between t
Page 335 and 336:
Chapter 7 CHAPTER 7 Public Key Cryp
Page 337 and 338:
The code presented in this chapter
Page 339 and 340:
Because public key encryption is so
Page 341 and 342:
Solution There’s some debate on t
Page 343 and 344:
7.4 Manipulating Big Numbers Proble
Page 345 and 346:
There’s a similar function for as
Page 347 and 348:
Additionally, you can ask for a ran
Page 349 and 350:
In addition, you might wish to test
Page 351 and 352:
Table 7-2. Math operations supporte
Page 353 and 354:
313, 317, 331, 337, 347, 349, 353,
Page 355 and 356:
for (b = 0; !BN_is_odd(x); b++) BN_
Page 357 and 358:
BIGNUM *dP, *dQ, *qInv; } RSA_PRIVA
Page 359 and 360:
This would map to the hexadecimal v
Page 361 and 362:
compute d. Without those two primes
Page 363 and 364:
The constants that may be used to s
Page 365 and 366:
When using OpenSSL, decryption can
Page 367 and 368:
ecommend using it, unless you are c
Page 369 and 370:
ture is valid. A successful check w
Page 371 and 372:
et = RSA_verify(NID_sha1, hash, 20,
Page 373 and 374:
#define MIN(x,y) ((x) > (y) ? (y) :
Page 375 and 376:
memcpy(signedtext, decrypt, 16); if
Page 377 and 378:
h_ret Optional argument that, if no
Page 379 and 380:
siglen The number of bytes written
Page 381 and 382:
data ready to go into the certifica
Page 383 and 384:
ut it requires you to pass in the l
Page 385 and 386:
LjKQ2r1Yt9foxbHdLKZeClqZuzN7PoEmy+b
Page 387 and 388:
ing in data, pass in a pointer to a
Page 389 and 390:
Table 7-6 lists the FILE object-bas
Page 391 and 392:
Solution The correct method depends
Page 393 and 394:
Use across applications For some pe
Page 395 and 396:
key agreement protocol, where both
Page 397 and 398:
consider slightly more sophisticate
Page 399 and 400:
Kerberos does assume that the envir
Page 401 and 402:
The function used to look up user i
Page 403 and 404:
The group structure that is returne
Page 405 and 406:
found, NULL will be returned, and G
Page 407 and 408:
ReferencedDomainName = (LPTSTR)Loca
Page 409 and 410:
if (errno != EINTR && errno != EAGA
Page 411 and 412:
if (!(spc_host_rulecount % 256)) {
Page 413 and 414:
} else { if (inet_addr(tmp) = = INA
Page 415 and 416:
8.5 Generating Random Passwords and
Page 417 and 418:
for this list is not insignificant.
Page 419 and 420:
file, it may allocate a sizable amo
Page 421 and 422:
On Windows, you can use the standar
Page 423 and 424:
Once getpass( ) or readpassphrase(
Page 425 and 426:
ters typed by the user. Instead, th
Page 427 and 428:
compute the future time at which th
Page 429 and 430:
decrypt the encrypted data. To make
Page 431 and 432:
On systems that support MCF through
Page 433 and 434:
for (i = 0; i < 1000; i++) { MD5_In
Page 435 and 436:
CryptHashData(hHash1, lpszKey, dwKe
Page 437 and 438:
Solution Use the PBKDF2 method of c
Page 439 and 440:
Verifying a password encrypted usin
Page 441 and 442:
c Pointer to an integer that will r
Page 443 and 444:
each of these pieces of information
Page 445 and 446:
server-side part of the authenticat
Page 447 and 448:
8.14 Authenticating with HTTP Cooki
Page 449 and 450:
char *spc_cookie_encode(char *cooki
Page 451 and 452:
• Let the salt be public, in whic
Page 453 and 454:
extra Additional application-specif
Page 455 and 456:
xl Pointer into which the length of
Page 457 and 458:
With a valid socket descriptor in h
Page 459 and 460:
11. The client and the server compu
Page 461 and 462:
Some people like to use a fixed mod
Page 463 and 464:
Often, you’ll want to generate a
Page 465 and 466:
Discussion Remember, authentication
Page 467 and 468:
• Provide the user with some way
Page 469 and 470:
if (!fgets(answer, sizeof(answer),
Page 471 and 472:
uffer = (char *)realloc(buffer, buf
Page 473 and 474:
compromise. If our system has such
Page 475 and 476:
When using RSA, if you’re doing o
Page 477 and 478:
see the confirmation request and th
Page 479 and 480:
Upon receipt of a response to a con
Page 481 and 482:
BOOL SpcConfirmationCreate(LPCTSTR
Page 483 and 484:
Additionally, over time, SSPI-speci
Page 485 and 486:
if (!spc_verify_cert_hostname(SSL_g
Page 487 and 488:
The next step is to call spc_accept
Page 489 and 490:
Discussion Session caching is norma
Page 491 and 492:
if (BIO_do_connect(conn)
Page 493 and 494:
The next step is to connect to the
Page 495 and 496:
DWORD dwHeadersLength = 0; LPSTR lp
Page 497 and 498:
attempt to develop and debug SSL-en
Page 499 and 500:
API for encryption and decryption,
Page 501 and 502:
memcpy(in_data.data, inbuf, inlen);
Page 503 and 504:
*outlen = out_data.length - (blksz
Page 505 and 506:
so. Likewise, any process with the
Page 507 and 508:
struct sockaddr_un *addr_unix; *dom
Page 509 and 510:
error_exit: if (sock) spc_socket_cl
Page 511 and 512:
different ways. On FreeBSD systems,
Page 513 and 514:
msg.msg_iov->iov_base = (void *)&sy
Page 515 and 516:
it’s unique and unpredictable! Yo
Page 517 and 518:
if (mysql_real_connect(mysql, host,
Page 519 and 520:
maintenance. Adding or removing ser
Page 521 and 522:
ut they shouldn’t tolerate reorde
Page 523 and 524:
#define SPC_CLIENT_DISTINGUISHER 0x
Page 525 and 526:
} static void spc_ssock_write( int
Page 527 and 528:
while (mlen) { if ((r = read(fd, ms
Page 529 and 530:
In such cases, you need to be able
Page 531 and 532:
Discussion One of the big motivator
Page 533 and 534:
A digital certificate contains info
Page 535 and 536:
Certificate revocation What happens
Page 537 and 538:
cate as long as it still has its pr
Page 539 and 540:
Currently, OCSP is not nearly as wi
Page 541 and 542:
ple is the permissible uses for a c
Page 543 and 544:
automated email to the address you
Page 545 and 546:
The type of code-signing certificat
Page 547 and 548:
10.3 Using Root Certificates Proble
Page 549 and 550:
Table 10-1. CA certificates, their
Page 551 and 552:
ights of the entity tied to that ce
Page 553 and 554:
10.5 Performing X.509 Certificate V
Page 555 and 556:
sk_X509_free(spc_store->crls); sk_X
Page 557 and 558:
X509_LOOKUP *lookup; store = X509_S
Page 559 and 560:
CertGetIssuerCertificateFromStore(
Page 561 and 562:
HCERTSTORE hCertStore; PCCERT_CONTE
Page 563 and 564:
See Also Recipe 10.11 10.7 Verifyin
Page 565 and 566:
SPC_X509STORE_SSL_VERIFY_NONE This
Page 567 and 568:
verify_flags |= SSL_VERIFY_FAIL_IF_
Page 569 and 570:
int spc_verify_cert_hostname(X509 *
Page 571 and 572:
for (i = 0; !bResult && i < pNameIn
Page 573 and 574:
only work you really need to do is
Page 575 and 576:
digest = EVP_sha1( ); fingerprint_l
Page 577 and 578:
if (cert && (uri = get_distribution
Page 579 and 580:
"\xb3\x9c\x25\xb1\xc3\x2e\x32\x53\x
Page 581 and 582:
headerlen -= (*datalen + 2); if (*d
Page 583 and 584:
In this recipe, we have used a numb
Page 585 and 586:
{ "\x8d\x26\xff\x2f\x31\x6d\x59x\29
Page 587 and 588:
LocalFree(pvStructInfo); return 0;
Page 589 and 590:
lpFullBuffer = lpNewBuffer; lpBuffe
Page 591 and 592:
of tunable variables that affect th
Page 593 and 594:
SPC_OCSPRESULT_CERTIFICATE_VALID =
Page 595 and 596:
* All done. Set the return code bas
Page 597 and 598:
Solution There are essentially thre
Page 599 and 600:
the byte is even, he reduces the nu
Page 601 and 602:
See Also Recipes 11.16, 11.18, 11.1
Page 603 and 604:
11.3 Using the Standard Unix Random
Page 605 and 606:
a pointer to data. Instead, they re
Page 607 and 608:
if (errno = = EINTR) continue; perr
Page 609 and 610:
Here we show how to use this functi
Page 611 and 612:
attacks are a realistic threat, you
Page 613 and 614:
This function never fails (save for
Page 615 and 616:
Using a stream cipher as a generato
Page 617 and 618:
One very safe way to use a cryptogr
Page 619 and 620:
out Buffer into which the random da
Page 621 and 622:
1. Figure out how big a seed you ne
Page 623 and 624:
0x00 Query the amount of entropy be
Page 625 and 626:
strncpy(a.sun_path, EGD_SOCKET_PATH
Page 627 and 628:
} } while (nb = = -1); } } } See Al
Page 629 and 630:
nbytes Number of bytes of entropy t
Page 631 and 632:
See Also • EGADS by Secure Softwa
Page 633 and 634:
If the generator is not seeded with
Page 635 and 636:
Discussion In all cases, you will s
Page 637 and 638:
Solution Because of the way that fl
Page 639 and 640:
double spc_rand_cunifvariate(double
Page 641 and 642:
See Also Recipe 11.11 11.16 Compres
Page 643 and 644:
It would be nice if you did not hav
Page 645 and 646:
For this reason, we think the full
Page 647 and 648:
} int cur_val, i, j, runsz; unsigne
Page 649 and 650:
See Also • NIST Cryptographic Mod
Page 651 and 652:
ecause even if a source does fail c
Page 653 and 654:
you use a seed file, you can just c
Page 655 and 656:
• If you have to accept data from
Page 657 and 658:
with a high-resolution clock (i.e.,
Page 659 and 660:
Collecting entropy from the keyboar
Page 661 and 662:
f[c + 2] = '>'; } else snprintf(bf,
Page 663 and 664:
SpcGatherKeyboardEntropy( ) uses th
Page 665 and 666:
} } if (hWndParent) EnableWindow(hW
Page 667 and 668:
number of bits of entropy has been
Page 669 and 670:
} return TRUE; pDlgData->cbRequeste
Page 671 and 672:
See Also Recipes 11.19, 11.20 11.22
Page 673 and 674:
Discussion We strongly recommend th
Page 675 and 676:
Chapter 12 CHAPTER 12 Anti-Tamperin
Page 677 and 678:
tecture-specific checks to determin
Page 679 and 680:
ure or to examine a hardware valida
Page 681 and 682:
• Detecting modification to a com
Page 683 and 684:
for (j = 8; j > 0; j--) { if (crc &
Page 685 and 686:
#include CRC_START_BLOCK(test) int
Page 687 and 688:
Solution Obfuscating compiled code
Page 689 and 690:
" movl 0f( , %%ebx ), %%eax \n\t" \
Page 691 and 692:
Because library functions are loade
Page 693 and 694:
encoded as a series of 32 Obcode bi
Page 695 and 696:
12.5 Performing Constant Transforms
Page 697 and 698:
12.7 Splitting Variables Problem La
Page 699 and 700:
12.9 Using Function Pointers Proble
Page 701 and 702:
arrays. This array type will hide t
Page 703 and 704:
eak; case SPC_ARRAY_FOLD: index = (
Page 705 and 706:
The following example demonstrates
Page 707 and 708:
Discussion The techniques for hidin
Page 709 and 710:
12.12 Detecting Debuggers Problem S
Page 711 and 712:
Discussion The spc_trap_detect( ) f
Page 713 and 714:
12.14 Detecting Windows Debuggers P
Page 715 and 716:
The int3 interface can also be used
Page 717 and 718:
To demonstrate the effect this macr
Page 719 and 720:
08048388 83 db 83h ; â 08048389 7D
Page 721 and 722:
ine the instruction making the refe
Page 723 and 724:
mprotect(buf, buf_len, PROT_READ |
Page 725 and 726:
eturn 4; } /* get entry point : her
Page 727 and 728:
need to use one of the three ring3
Page 729 and 730:
cates failure, it’s likely that n
Page 731 and 732:
tion gets caught. The only ways to
Page 733 and 734:
memory location will generally stil
Page 735 and 736:
eturn dst; } volatile void *spc_mem
Page 737 and 738:
The mlock( ) system call on Unix im
Page 739 and 740:
Discussion Both C and C++ allow the
Page 741 and 742:
Do not share signal handlers. Sever
Page 743 and 744:
#endif } static int signal_was_caug
Page 745 and 746:
paper reached the widest audience,
Page 747 and 748:
The proper way to handle a program
Page 749 and 750:
handles[0] = cond; handles[1] = mut
Page 751 and 752:
#ifndef WIN32 pool->tids = (pthread
Page 753 and 754:
#define SPC_ACQUIRE_MUTEX(mtx) pthr
Page 755 and 756:
if (socketpool_limit > 0 && socketp
Page 757 and 758:
Table 13-1. Resources that may be l
Page 759 and 760:
ability to run. The default limits
Page 761 and 762:
Note that the structures as present
Page 763 and 764:
access to the machine. This makes i
Page 765:
ing log entries. It is possible, ho
Page 768 and 769:
attacks (continued) capture replay
Page 770 and 771:
CFB (Cipher Feedback) mode, 167, 18
Page 772 and 773:
deriving symmetric keys from a pass
Page 774 and 775:
EVP_CIPHER_CTX_set_padding( ), 227
Page 776 and 777:
integrity checking cipher modes, 16
Page 778 and 779:
message digests (continued) desirab
Page 780 and 781:
parallelizing MACs, 304 parent and
Page 782 and 783:
RAND_bytes( ), 604 RAND_load_file(
Page 784 and 785:
session ID context, 461 session IDs
Page 786 and 787:
spc_gather_keyboard_entropy( ), 631
Page 788 and 789:
symmetric cryptography, 116-154 alg
Page 790 and 791:
Windows (continued) Win 2000, restr
Page 792:
oads. They will often travel up to
show all

Problem - Kevin Tafuro

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?