332 INDEX
relatively prime, 29, 90
Room 40, 8
rotors, 64
RSA, 13, 214, 216
problem, 230
theorem, 229
running key cipher, 120
S-box, 160
Secure Hash Algorithm (SHA)
SHA-1, 225
seed, 140
self-loops, 204
sifr, 4
signature, 21
signatures, 220
simple, 204
sphere packings, 260
Stager cipher, 7
steganography, 13, 20, 269
stego-function, 270
stego-object, 270
still images, 273
Strassen algorithm, 208, 233
stream ciphers, 138
substitution alphabet ciphers, 22
Sudoku puzzles, 275
symmetric ciphers, 171
text extraction, 285
totient function, 215, 236, 305
ToyHash, 222
transmit, 21
transparencies, 283
transposition, 48
trap-door functions, 294
triangle inequality, 253
Turing, Alan, 70
twin primes, 197
Ultra, 11, 52
unit, 29, 192
Universal Product Code (UPC)
symbols, 257
valid encryption scheme, 21, 22
Verhoeff, Jacobus, 259
vertical line shift coding, 272
vertices, 173
Vigen` ere cipher, 34
Kasiski test, 102
keystream, 34
winnowing, 277
XOR, 137
Zimmerman telegram, 8
Previous Page Next Page