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|00000000| 5c 63 68 61 70 74 65 72 | 7b 43 72 79 70 74 6f 67 |\chapter|{Cryptog|
|00000010| 72 61 70 68 69 63 20 53 | 65 72 76 69 63 65 73 7d |raphic S|ervices}|
|00000020| 0a 5c 69 6e 64 65 78 7b | 63 72 79 70 74 6f 67 72 |.\index{|cryptogr|
|00000030| 61 70 68 79 7d 0a 0a 54 | 68 65 20 6d 6f 64 75 6c |aphy}..T|he modul|
|00000040| 65 73 20 64 65 73 63 72 | 69 62 65 64 20 69 6e 20 |es descr|ibed in |
|00000050| 74 68 69 73 20 63 68 61 | 70 74 65 72 20 69 6d 70 |this cha|pter imp|
|00000060| 6c 65 6d 65 6e 74 20 76 | 61 72 69 6f 75 73 20 61 |lement v|arious a|
|00000070| 6c 67 6f 72 69 74 68 6d | 73 20 6f 66 0a 61 20 63 |lgorithm|s of.a c|
|00000080| 72 79 70 74 6f 67 72 61 | 70 68 69 63 20 6e 61 74 |ryptogra|phic nat|
|00000090| 75 72 65 2e 20 20 54 68 | 65 79 20 61 72 65 20 61 |ure.  Th|ey are a|
|000000a0| 76 61 69 6c 61 62 6c 65 | 20 61 74 20 74 68 65 20 |vailable| at the |
|000000b0| 64 69 73 63 72 65 74 69 | 6f 6e 20 6f 66 20 74 68 |discreti|on of th|
|000000c0| 65 0a 69 6e 73 74 61 6c | 6c 61 74 69 6f 6e 2e 20 |e.instal|lation. |
|000000d0| 20 48 65 72 65 27 73 20 | 61 6e 20 6f 76 65 72 76 | Here's |an overv|
|000000e0| 69 65 77 3a 0a 0a 5c 62 | 65 67 69 6e 7b 64 65 73 |iew:..\b|egin{des|
|000000f0| 63 72 69 70 74 69 6f 6e | 7d 0a 0a 5c 69 74 65 6d |cription|}..\item|
|00000100| 5b 6d 64 35 5d 0a 2d 2d | 2d 20 52 53 41 27 73 20 |[md5].--|- RSA's |
|00000110| 4d 44 35 20 6d 65 73 73 | 61 67 65 20 64 69 67 65 |MD5 mess|age dige|
|00000120| 73 74 20 61 6c 67 6f 72 | 69 74 68 6d 2e 0a 0a 5c |st algor|ithm...\|
|00000130| 69 74 65 6d 5b 6d 70 7a | 5d 0a 2d 2d 2d 20 49 6e |item[mpz|].--- In|
|00000140| 74 65 72 66 61 63 65 20 | 74 6f 20 74 68 65 20 47 |terface |to the G|
|00000150| 4e 55 20 4d 50 20 6c 69 | 62 72 61 72 79 20 66 6f |NU MP li|brary fo|
|00000160| 72 20 61 72 62 69 74 72 | 61 72 79 20 70 72 65 63 |r arbitr|ary prec|
|00000170| 69 73 69 6f 6e 20 61 72 | 69 74 68 6d 65 74 69 63 |ision ar|ithmetic|
|00000180| 2e 0a 0a 5c 69 74 65 6d | 5b 72 6f 74 6f 72 5d 0a |...\item|[rotor].|
|00000190| 2d 2d 2d 20 45 6e 69 67 | 6d 61 2d 6c 69 6b 65 20 |--- Enig|ma-like |
|000001a0| 65 6e 63 72 79 70 74 69 | 6f 6e 20 61 6e 64 20 64 |encrypti|on and d|
|000001b0| 65 63 72 79 70 74 69 6f | 6e 2e 0a 0a 5c 65 6e 64 |ecryptio|n...\end|
|000001c0| 7b 64 65 73 63 72 69 70 | 74 69 6f 6e 7d 0a 0a 48 |{descrip|tion}..H|
|000001d0| 61 72 64 63 6f 72 65 20 | 63 79 70 68 65 72 70 75 |ardcore |cypherpu|
|000001e0| 6e 6b 73 20 77 69 6c 6c | 20 70 72 6f 62 61 62 6c |nks will| probabl|
|000001f0| 79 20 66 69 6e 64 20 74 | 68 65 20 63 72 79 70 74 |y find t|he crypt|
|00000200| 6f 67 72 61 70 68 69 63 | 20 6d 6f 64 75 6c 65 73 |ographic| modules|
|00000210| 0a 77 72 69 74 74 65 6e | 20 62 79 20 41 6e 64 72 |.written| by Andr|
|00000220| 65 77 20 4b 75 63 68 6c | 69 6e 67 20 6f 66 20 66 |ew Kuchl|ing of f|
|00000230| 75 72 74 68 65 72 20 69 | 6e 74 65 72 65 73 74 3b |urther i|nterest;|
|00000240| 20 74 68 65 20 70 61 63 | 6b 61 67 65 20 61 64 64 | the pac|kage add|
|00000250| 73 0a 62 75 69 6c 74 2d | 69 6e 20 6d 6f 64 75 6c |s.built-|in modul|
|00000260| 65 73 20 66 6f 72 20 44 | 45 53 20 61 6e 64 20 49 |es for D|ES and I|
|00000270| 44 45 41 20 65 6e 63 72 | 79 70 74 69 6f 6e 2c 20 |DEA encr|yption, |
|00000280| 70 72 6f 76 69 64 65 73 | 20 61 20 50 79 74 68 6f |provides| a Pytho|
|00000290| 6e 20 6d 6f 64 75 6c 65 | 0a 66 6f 72 20 72 65 61 |n module|.for rea|
|000002a0| 64 69 6e 67 20 61 6e 64 | 20 64 65 63 72 79 70 74 |ding and| decrypt|
|000002b0| 69 6e 67 20 50 47 50 20 | 66 69 6c 65 73 2c 20 61 |ing PGP |files, a|
|000002c0| 6e 64 20 74 68 65 6e 20 | 73 6f 6d 65 2e 20 20 54 |nd then |some.  T|
|000002d0| 68 65 73 65 20 6d 6f 64 | 75 6c 65 73 0a 61 72 65 |hese mod|ules.are|
|000002e0| 20 6e 6f 74 20 64 69 73 | 74 72 69 62 75 74 65 64 | not dis|tributed|
|000002f0| 20 77 69 74 68 20 50 79 | 74 68 6f 6e 20 62 75 74 | with Py|thon but|
|00000300| 20 61 76 61 69 6c 61 62 | 6c 65 20 73 65 70 61 72 | availab|le separ|
|00000310| 61 74 65 6c 79 2e 20 20 | 53 65 65 20 74 68 65 20 |ately.  |See the |
|00000320| 55 52 4c 0a 5c 66 69 6c | 65 7b 68 74 74 70 3a 2f |URL.\fil|e{http:/|
|00000330| 2f 77 77 77 2e 6d 61 67 | 6e 65 74 2e 63 6f 6d 2f |/www.mag|net.com/|
|00000340| 7e 61 6d 6b 2f 70 79 74 | 68 6f 6e 2f 70 63 74 2e |~amk/pyt|hon/pct.|
|00000350| 68 74 6d 6c 7d 20 6f 72 | 20 73 65 6e 64 20 65 6d |html} or| send em|
|00000360| 61 69 6c 20 74 6f 0a 5c | 66 69 6c 65 7b 61 6d 6b |ail to.\|file{amk|
|00000370| 40 6d 61 67 6e 65 74 2e | 63 6f 6d 7d 20 66 6f 72 |@magnet.|com} for|
|00000380| 20 6d 6f 72 65 20 69 6e | 66 6f 72 6d 61 74 69 6f | more in|formatio|
|00000390| 6e 2e 0a 5c 69 6e 64 65 | 78 7b 50 47 50 7d 0a 5c |n..\inde|x{PGP}.\|
|000003a0| 69 6e 64 65 78 69 69 7b | 44 45 53 7d 7b 63 69 70 |indexii{|DES}{cip|
|000003b0| 68 65 72 7d 0a 5c 69 6e | 64 65 78 69 69 7b 49 44 |her}.\in|dexii{ID|
|000003c0| 45 41 7d 7b 63 69 70 68 | 65 72 7d 0a 5c 69 6e 64 |EA}{ciph|er}.\ind|
|000003d0| 65 78 7b 63 72 79 70 74 | 6f 67 72 61 70 68 79 7d |ex{crypt|ography}|
|000003e0| 0a                      |                         |.       |        |
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