202 & histori
223 & cryptographi
564 & begin
795 & thousand
366 & year
2436 & recent
2681 & decad
3204 & stori
380 & call
278 & classic
223 & cryptographi
254 & �
432 & method
2646 & encrypt
49 & us
2687 & pen
632 & paper
494 & simpl
89 & mechan
1391 & aid
2780 & 20th
480 & centuri
76 & invent
33 & complex
89 & mechan
779 & electromechan
79 & machin
185 & enigma
2782 & rotor
79 & machin
682 & sophist
25 & effici
407 & mean
2646 & encrypt
835 & subsequ
1872 & introduct
261 & electron
1 & comput
635 & allow
3355 & elabor
2695 & scheme
142 & greater
33 & complex
974 & entir
1799 & unsuit
2687 & pen
632 & paper
111 & develop
223 & cryptographi
272 & parallel
111 & develop
1588 & cryptanalysi
254 & �
224 & break
799 & code
1587 & cipher
2195 & discoveri
10 & applic
370 & frequenc
307 & analysi
458 & read
2646 & encrypt
189 & commun
2503 & occas
3356 & alter
2974 & cours
202 & histori
1613 & thu
3023 & zimmermann
3229 & telegram
3357 & trigger
532 & unit
374 & state
2119 & entri
186 & world
187 & war
199 & alli
458 & read
3358 & nazi
718 & germani
1587 & cipher
3235 & shorten
186 & world
187 & war
188 & ii
1032 & evalu
366 & year
2899 & 1970
327 & secur
223 & cryptographi
763 & larg
3359 & preserv
1950 & govern
874 & event
1595 & brought
1110 & squar
401 & domain
129 & creation
2646 & encrypt
1357 & standard
2842 & de
76 & invent
2636 & public-kei
223 & cryptographi
463 & content
525 & hide
1494 & 1
278 & classic
2634 & cryptography

1476 & 2
2769 & mediev
2634 & cryptography

1497 & 3
223 & cryptographi
2245 & 1800
186 & world
187 & war
3360 & ii

1503 & 4
186 & world
187 & war
188 & ii
2634 & cryptography

1506 & 5
77 & modern
2634 & cryptography

1506 & 5
1494 & 1
2155 & shannon

1506 & 5
1476 & 2
2646 & encrypt
3361 & standard

1506 & 5
1497 & 3
3362 & key

1506 & 5
1503 & 4
223 & cryptographi
3363 & politics

1506 & 5
1506 & 5
77 & modern
2633 & cryptanalysis

1480 & 6
387 & see
544 & also

1525 & 7
546 & references

1528 & 8
547 & extern
548 & links

278 & classic
2634 & cryptography

387 & see
278 & classic
3364 & cipher

567 & earliest
810 & known
49 & us
223 & cryptographi
349 & found
3365 & non-standard
3366 & hieroglyph
3367 & carv
2932 & monument
3368 & egypt
3150 & old
3369 & kingdom
3370 & ca
3371 & 4500+
366 & year
190 & thought
1409 & seriou
1776 & attempt
191 & secret
189 & commun
1776 & attempt
3372 & mysteri
3373 & intrigu
3374 & amus
3375 & liter
3376 & onlook
39 & exampl
49 & us
223 & cryptographi
1846 & look
3377 & impress
3378 & misleadingli
3379 & clai
1295 & tablet
3380 & mesopotamia
2854 & somewhat
1554 & clearli
653 & meant
2744 & protect
6 & inform
254 & �
2646 & encrypt
3381 & recip
3382 & presum
379 & commerci
2447 & valuabl
2708 & hebrew
3165 & scholar
204 & made
49 & us
494 & simpl
3383 & monoalphabet
2696 & substitut
1587 & cipher
3384 & atbash
1587 & cipher
564 & begin
3385 & 500
3386 & 600
576 & bc
2673 & scytal
158 & devic
2646 & encrypt
2625 & greek
278 & classic
97 & time
3387 & said
810 & known
1587 & cipher
2673 & scytal
2690 & transposit
1587 & cipher
413 & claim
2768 & spartan
184 & militari
1186 & citat
2714 & herodotu
864 & tell
191 & secret
859 & messag
320 & physic
2660 & conceal
3388 & wax
3389 & wooden
1295 & tablet
2715 & tattoo
2716 & slave
2718 & head
2660 & conceal
2719 & regrown
2720 & hair
1544 & properli
39 & exampl
223 & cryptographi
2588 & se
859 & messag
810 & known
657 & readabl
810 & known
2713 & steganographi
2625 & greek
432 & method
111 & develop
3390 & polybiu
380 & call
3390 & polybiu
1110 & squar
3391 & roman
939 & certainli
1685 & know
223 & cryptographi
2702 & caesar
1587 & cipher
2438 & variat
2672 & ancient
2432 & mention
879 & book
3391 & roman
184 & militari
223 & cryptographi
980 & especi
2703 & juliu
2702 & caesar
3392 & unfortun
1877 & lost
2769 & mediev
2634 & cryptography

2911 & page
2728 & al-kindi
3152 & manuscript
3153 & deciph
1586 & cryptograph
859 & messag
840 & contain
1093 & descript
1588 & cryptanalysi
370 & frequenc
307 & analysi
387 & see
3393 & voynich
3394 & manuscript

3395 & religi
1750 & motiv
3396 & textual
307 & analysi
3397 & qur
1235 & led
76 & invent
370 & frequenc
307 & analysi
8 & techniqu
224 & break
3383 & monoalphabet
2696 & substitut
1587 & cipher
2728 & al-kindi
3398 & sometim
579 & ad
3399 & 800
3160 & ibrahim
3161 & al-kadi
3400 & -1992
22 & fundament
2785 & cryptanalyt
226 & advanc
201 & wwii
806 & essenti
1587 & cipher
693 & remain
1787 & vulner
2785 & cryptanalyt
8 & techniqu
111 & develop
2734 & polyalphabet
1587 & cipher
2735 & leon
2736 & battista
2737 & alberti
3370 & ca
3401 & 1465
693 & remain
821 & thereaft
2737 & alberti
380 & call
688 & father
1914 & western
2624 & cryptolog
2771 & johann
2772 & trithemiu
159 & work
3402 & poligraphia
76 & invent
2773 & tabula
2774 & recta
2269 & critic
1066 & compon
2740 & vigen�r
1587 & cipher
3177 & french
1586 & cryptograph
3178 & blais
2842 & de
3403 & vigener
3404 & devis
7 & practic
3405 & poli
2701 & alphabet
11 & system
3406 & bear
334 & name
2740 & vigen�r
1587 & cipher
2735 & leon
2736 & battista
2737 & alberti
263 & consid
688 & father
2734 & polyalphabet
1587 & cipher
3407 & prof
3161 & al-kadi
1859 & 1990
632 & paper
3408 & ref-
1497 & 3
3409 & review
2726 & arab
198 & contribut
223 & cryptographi
813 & report
1791 & knowledg
2734 & polyalphabet
1587 & cipher
3385 & 500
366 & year
2737 & alberti
180 & base
2436 & recent
2391 & discov
3152 & manuscript
2728 & al-kindi
1186 & citat
2726 & arab
394 & mathematician
2728 & al-kindi
3410 & wrote
879 & book
3411 & crytographi
3412 & entitl
3413 & risalah
3414 & fi
3415 & istikhraj
3416 & al-mu
3417 & amma
3152 & manuscript
3153 & deciph
1586 & cryptograph
859 & messag
579 & ad
3399 & 800
13 & describ
1588 & cryptanalysi
8 & techniqu
206 & includ
2734 & polyalphabet
1587 & cipher
1587 & cipher
1970 & classif
2726 & arab
3418 & phonet
3419 & syntax
3420 & importantli
13 & describ
49 & us
8 & techniqu
1588 & cryptanalysi
1951 & gave
1093 & descript
370 & frequenc
307 & analysi
1262 & cover
432 & method
3421 & encipher
1588 & cryptanalysi
3421 & encipher
243 & statist
307 & analysi
162 & letter
162 & letter
1253 & combin
2726 & arab
3422 & ahmad
3423 & al-qalqashandi
3424 & 1355-1418
3410 & wrote
3425 & subh
3426 & al-a
3427 & sha
3428 & 14-volum
3429 & encyclopedia
206 & includ
884 & section
2624 & cryptolog
6 & inform
2201 & attribut
3430 & taj
3431 & ad-din
3432 & ali
3433 & ibn
3434 & ad-duraihim
3435 & ben
3436 & muhammad
3437 & ath-tha
3438 & alibi
3439 & al-mausili
3440 & live
3441 & 1312
3442 & 1361
937 & write
223 & cryptographi
1877 & lost
509 & list
1587 & cipher
159 & work
206 & includ
2696 & substitut
2690 & transposit
97 & time
1587 & cipher
1122 & multipl
2696 & substitut
1775 & plaintext
162 & letter
2297 & trace
3433 & ibn
3443 & al-duraihim
3444 & exposit
159 & work
39 & exampl
1588 & cryptanalysi
206 & includ
49 & us
713 & tabl
162 & letter
370 & frequenc
477 & set
162 & letter
1206 & occur
557 & word
369 & europ
223 & cryptographi
117 & becam
2886 & secretli
2796 & consequ
419 & polit
2873 & competit
3395 & religi
149 & revolut
992 & instanc
369 & europ
621 & renaiss
3445 & citizen
220 & variou
3164 & italian
374 & state
254 & �
3446 & papal
374 & state
3391 & roman
3447 & cathol
2802 & church
206 & includ
254 & �
1134 & respons
3448 & rapid
2246 & prolifer
1586 & cryptograph
8 & techniqu
343 & reflect
69 & understand
1791 & knowledg
2737 & alberti
2734 & polyalphabet
226 & advanc
226 & advanc
1587 & cipher
2737 & alberti
3449 & weren
226 & advanc
699 & inventor
1668 & /
111 & develop
1668 & /
179 & user
413 & claim
134 & believ
1259 & regularli
2850 & broken
3450 & over-optim
1760 & inher
223 & cryptographi
693 & remain
22 & fundament
768 & difficult
3451 & accur
1685 & know
1787 & vulner
11 & system
136 & actual
3452 & absenc
1791 & knowledg
1790 & guess
1756 & hope
1666 & expect
848 & common
223 & cryptographi
1588 & cryptanalysi
191 & secret
3453 & agent/couri
3251 & betray
431 & featur
3454 & babington
3455 & plot
3456 & reign
3457 & queen
3458 & elizabeth
1235 & led
508 & execut
628 & mari
3457 & queen
3459 & scot
2646 & encrypt
859 & messag
97 & time
3460 & man
3461 & iron
3462 & mask
193 & decrypt
659 & prior
101 & 1900
3463 & �tienn
2778 & bazeri
3464 & regrett
3465 & non-definit
1015 & light
2684 & ident
3466 & legendari
3392 & unfortun
3467 & prison
369 & europ
561 & end
3468 & muslim
3469 & golden
208 & ag
900 & hand
3470 & mongol
223 & cryptographi
693 & remain
892 & compar
3471 & undevelop
223 & cryptographi
3472 & japan
2367 & seem
3473 & 1510
226 & advanc
8 & techniqu
810 & known
696 & open
354 & countri
3474 & west
564 & begin
3475 & 1860
2742 & 1920
2933 & polish
3476 & naval
1381 & offic
1188 & assist
3236 & japanes
184 & militari
799 & code
1587 & cipher
111 & develop
223 & cryptographi
2245 & 1800
186 & world
187 & war
3360 & ii

549 & main
457 & articl
186 & world
187 & war
2634 & cryptography

223 & cryptographi
33 & complex
202 & histori
3477 & wasn
2755 & 19th
480 & centuri
111 & develop
579 & ad
2988 & hoc
42 & approach
2646 & encrypt
1588 & cryptanalysi
2 & scienc
1455 & find
2935 & weak
3478 & crypto
11 & system
39 & exampl
1555 & latter
206 & includ
91 & charl
92 & babbag
3479 & crimean
187 & war
1200 & era
159 & work
119 & mathemat
1588 & cryptanalysi
2734 & polyalphabet
1587 & cipher
3480 & redevelop
1383 & publish
2854 & somewhat
3481 & prussian
3186 & friedrich
3187 & kasiski
69 & understand
223 & cryptographi
97 & time
63 & typic
935 & consist
3482 & hard-won
571 & rule
3483 & thumb
387 & see
39 & exampl
2760 & august
2761 & kerckhoff
1586 & cryptograph
937 & write
1555 & latter
2755 & 19th
480 & centuri
3484 & edgar
3485 & allan
3486 & poe
14 & systemat
432 & method
44 & solv
1587 & cipher
3487 & 1840
991 & particular
868 & place
1098 & notic
506 & abil
3488 & philadelphia
632 & paper
3489 & alexand
3490 & weekli
218 & express
3491 & messeng
3492 & invit
3493 & submiss
1587 & cipher
1926 & proceed
44 & solv
760 & success
17 & creat
3494 & stir
362 & month
3410 & wrote
3495 & essai
432 & method
223 & cryptographi
669 & prove
49 & us
1872 & introduct
3496 & novic
793 & british
2748 & cryptanalyst
1776 & attempt
224 & break
183 & german
799 & code
1587 & cipher
186 & world
187 & war
300 & famou
3204 & stori
3497 & gold
941 & bug
1588 & cryptanalysi
3498 & promin
267 & element
223 & cryptographi
3499 & misus
64 & involv
3455 & plot
1235 & led
508 & execut
3500 & mata
3501 & hari
3502 & conniv
1235 & led
3503 & travesti
3504 & dreyfu
3505 & convict
3506 & imprison
2780 & 20th
480 & centuri
3507 & fortun
1586 & cryptograph
64 & involv
3508 & expos
79 & machin
1235 & led
3504 & dreyfu
36 & problem
3500 & mata
3501 & hari
2851 & contrast
3509 & shot
186 & world
187 & war
3510 & admiralti
482 & room
3511 & 40
3512 & broke
183 & german
3476 & naval
799 & code
581 & plai
691 & role
3476 & naval
2468 & engag
187 & war
769 & notabl
1465 & detect
181 & major
183 & german
3513 & sorti
3514 & north
3515 & sea
1235 & led
3339 & battl
3516 & dogger
3517 & bank
3518 & jutland
793 & british
3519 & fleet
1681 & sent
3209 & intercept
198 & contribut
193 & decrypt
3023 & zimmermann
3229 & telegram
734 & cabl
183 & german
3520 & foreign
1381 & offic
1681 & sent
1924 & washington
3521 & ambassador
3522 & heinrich
770 & von
3523 & eckardt
3524 & mexico
581 & plai
181 & major
148 & part
3233 & bring
532 & unit
374 & state
187 & war
3525 & 1917
3526 & gilbert
3527 & vernam
336 & propos
3528 & teletyp
1587 & cipher
3529 & previously-prepar
466 & kei
976 & kept
632 & paper
662 & tape
1253 & combin
2790 & charact
2790 & charact
1775 & plaintext
859 & messag
643 & produc
3530 & cyphertext
1235 & led
111 & develop
779 & electromechan
158 & devic
1587 & cipher
79 & machin
119 & mathemat
432 & method
2246 & prolifer
157 & period
659 & prior
186 & world
187 & war
188 & ii
769 & notabl
744 & william
3155 & friedman
10 & applic
243 & statist
8 & techniqu
1588 & cryptanalysi
1587 & cipher
111 & develop
3336 & marian
3531 & rejewski
133 & initi
224 & break
183 & german
3532 & armi
2056 & version
185 & enigma
11 & system
3533 & 1932
186 & world
187 & war
188 & ii
2634 & cryptography

549 & main
457 & articl
186 & world
187 & war
188 & ii
223 & cryptographi
509 & list
3534 & cryptographers

185 & enigma
79 & machin
155 & wide
3358 & nazi
718 & germani
1588 & cryptanalysi
199 & alli
766 & vital
1772 & ultra
241 & intellig
186 & world
187 & war
188 & ii
89 & mechan
779 & electromechan
1587 & cipher
79 & machin
155 & wide
49 & us
254 & �
1173 & where
79 & machin
2795 & impract
254 & �
2241 & manual
11 & system
399 & continu
49 & us
816 & great
226 & advanc
204 & made
1587 & cipher
93 & design
1588 & cryptanalysi
1514 & secreci
6 & inform
157 & period
671 & begun
3080 & declassifi
2846 & offici
793 & british
3535 & 50-year
1514 & secreci
157 & period
1152 & come
561 & end
2530 & archiv
1203 & slowli
696 & open
3536 & assort
3537 & memoir
457 & articl
672 & appear
183 & german
204 & made
2040 & heavi
49 & us
2741 & variant
779 & electromechan
2782 & rotor
79 & machin
810 & known
185 & enigma
394 & mathematician
3336 & marian
3531 & rejewski
3538 & poland
1587 & cipher
1972 & bureau
2028 & decemb
3533 & 1932
3248 & deduc
1920 & detail
266 & structur
183 & german
3532 & armi
185 & enigma
49 & us
119 & mathemat
249 & limit
1819 & document
1265 & suppli
3539 & captain
3540 & gustav
3541 & bertrand
3177 & french
184 & militari
241 & intellig
2390 & greatest
3281 & breakthrough
1588 & cryptanalysi
795 & thousand
366 & year
19 & accord
2887 & historian
409 & david
2888 & kahn
3531 & rejewski
119 & mathemat
1587 & cipher
1972 & bureau
1918 & colleagu
3542 & jerzi
3543 & r�zycki
3544 & henryk
3545 & zygalski
399 & continu
458 & read
185 & enigma
1088 & keep
3292 & pace
847 & evolut
183 & german
3532 & armi
79 & machin
1066 & compon
3421 & encipher
2656 & procedur
3546 & pole
291 & resourc
117 & becam
3547 & strain
620 & chang
103 & introduc
183 & german
187 & war
551 & loom
1587 & cipher
1972 & bureau
2933 & polish
54 & gener
3548 & staff
163 & instruct
741 & juli
3549 & 25
3550 & 1939
3551 & warsaw
133 & initi
3177 & french
793 & british
241 & intellig
255 & repres
191 & secret
185 & enigma
193 & decrypt
186 & world
187 & war
188 & ii
3512 & broke
1494 & 1
749 & septemb
3550 & 1939
466 & kei
1587 & cipher
1972 & bureau
2806 & personnel
3552 & evacu
3553 & southeastward
749 & septemb
3554 & 17
1795 & soviet
1796 & union
1782 & attack
3538 & poland
385 & cross
3555 & romania
2956 & reach
3556 & pari
2998 & franc
486 & pc
3557 & bruno
3556 & pari
399 & continu
224 & break
185 & enigma
3558 & collabor
793 & british
2670 & cryptologist
195 & bletchlei
196 & park
793 & british
3559 & got
837 & speed
224 & break
185 & enigma
938 & due
2974 & cours
793 & british
1586 & cryptograph
254 & �
2079 & rank
206 & includ
1674 & chess
1910 & master
119 & mathemat
1990 & don
3560 & gordon
3561 & welchman
3562 & max
3563 & newman
397 & alan
398 & ture
645 & conceptu
3564 & founder
77 & modern
1 & comput
254 & �
1629 & substanti
226 & advanc
244 & scale
59 & technolog
185 & enigma
193 & decrypt
561 & end
187 & war
3565 & 19
2312 & april
1858 & 1945
817 & britain
2080 & top
184 & militari
1381 & offic
914 & told
2725 & reveal
183 & german
185 & enigma
1587 & cipher
2850 & broken
1135 & give
3566 & defeat
2764 & enemi
2957 & chanc
391 & sai
3567 & fairli
3568 & beaten
3569 & navi
1586 & cryptograph
3570 & cooper
793 & british
3571 & dutch
1586 & cryptograph
108 & 1940
3512 & broke
3236 & japanes
3569 & navi
3478 & crypto
11 & system
224 & break
3572 & jn-25
2783 & famous
1235 & led
200 & victori
3339 & battl
3573 & midwai
1599 & public
344 & fact
1992 & chicago
3574 & tribun
820 & shortli
3339 & battl
3236 & japanes
2367 & seem
1098 & notic
976 & kept
49 & us
3572 & jn-25
11 & system
3532 & armi
1069 & group
1683 & si
1084 & manag
224 & break
3575 & highest
327 & secur
3236 & japanes
2707 & diplomat
1587 & cipher
11 & system
779 & electromechan
639 & step
735 & switch
79 & machin
380 & call
3237 & purpl
3576 & american
201 & wwii
122 & began
3576 & american
114 & refer
241 & intellig
31 & result
1588 & cryptanalysi
980 & especi
3237 & purpl
79 & machin
2202 & magic
793 & british
1916 & eventu
663 & settl
1772 & ultra
241 & intellig
31 & result
1588 & cryptanalysi
2476 & particularli
859 & messag
194 & traffic
2744 & protect
220 & variou
185 & enigma
881 & earlier
793 & british
112 & term
1772 & ultra
3577 & bonifac
1776 & attempt
341 & suggest
3578 & betrai
965 & individu
1388 & agent
1493 & sourc
183 & german
184 & militari
2865 & deploi
89 & mechan
1776 & attempt
1785 & one-tim
1786 & pad
195 & bletchlei
196 & park
380 & call
3579 & fish
1587 & cipher
3562 & max
3563 & newman
1918 & colleagu
93 & design
2865 & deploi
3580 & heath
3581 & robinson
186 & world
556 & programm
78 & digit
261 & electron
1 & comput
729 & colossu
98 & help
1588 & cryptanalysi
183 & german
3520 & foreign
1381 & offic
122 & began
49 & us
1785 & one-tim
1786 & pad
3582 & 1919
194 & traffic
458 & read
201 & wwii
568 & partli
31 & result
3583 & recoveri
466 & kei
1314 & materi
3584 & south
3585 & america
3586 & discard
1806 & suffici
1678 & care
183 & german
3587 & courier
3236 & japanes
3520 & foreign
1381 & offic
2686 & local
111 & develop
260 & electr
639 & step
735 & switch
180 & base
11 & system
380 & call
3237 & purpl
1618 & similar
79 & machin
614 & attach
3236 & japanes
3588 & embassi
380 & call
3589 & m-machin
114 & refer
1038 & red
2850 & broken
131 & degre
199 & alli
3590 & sigaba
13 & describ
2781 & patent
1480 & 6
3591 & 175
3592 & 625
1365 & file
1630 & 1944
168 & issu
3225 & 2001
199 & alli
1587 & cipher
79 & machin
201 & wwii
206 & includ
793 & british
3593 & typex
3590 & sigaba
779 & electromechan
2782 & rotor
93 & design
1618 & similar
3594 & spirit
185 & enigma
181 & major
71 & improv
810 & known
2850 & broken
187 & war
3546 & pole
3595 & lacida
79 & machin
327 & secur
349 & found
1045 & intend
2933 & polish
3532 & armi
1586 & cryptograph
731 & uk
49 & us
2558 & discontinu
3596 & troop
120 & field
3597 & m-209
327 & secur
3598 & m-94
2867 & famili
79 & machin
793 & british
3599 & soe
1388 & agent
133 & initi
3600 & poem
1587 & cipher
3601 & memor
3600 & poem
2779 & encryption/decrypt
466 & kei
187 & war
122 & began
735 & switch
1785 & one-tim
1786 & pad
3602 & vic
1587 & cipher
3603 & 1957
1044 & connect
3604 & rudolf
3605 & abel
3606 & ny
3607 & spy
3608 & ring
33 & complex
900 & hand
1587 & cipher
413 & claim
981 & complic
810 & known
1795 & soviet
19 & accord
409 & david
2888 & kahn
2888 & kahn
799 & code
193 & decrypt
1795 & soviet
1587 & cipher
2476 & particularli
1785 & one-tim
1786 & pad
1798 & reus
387 & see
1793 & venona
230 & project
77 & modern
2634 & cryptography

223 & cryptographi
1588 & cryptanalysi
74 & becom
119 & mathemat
186 & world
187 & war
188 & ii
1679 & taken
155 & wide
132 & avail
1 & comput
209 & internet
189 & commun
658 & medium
3233 & bring
172 & effect
223 & cryptographi
848 & common
49 & us
1863 & nation
1950 & govern
886 & similarli
2405 & enterpris
2155 & shannon

1200 & era
77 & modern
223 & cryptographi
564 & begin
764 & claud
765 & shannon
572 & arguabl
688 & father
119 & mathemat
223 & cryptographi
159 & work
201 & wwii
189 & commun
327 & secur
3609 & 1949
1383 & publish
189 & commun
34 & theori
1514 & secreci
11 & system
707 & bell
11 & system
1600 & technic
363 & journal
879 & book
119 & mathemat
34 & theori
189 & commun
3610 & warren
3611 & weaver
206 & includ
31 & result
201 & wwii
159 & work
269 & addit
159 & work
6 & inform
189 & commun
34 & theori
123 & establish
3612 & solid
4 & theoret
684 & basi
223 & cryptographi
1588 & cryptanalysi
223 & cryptographi
3613 & disappear
191 & secret
1950 & govern
189 & commun
1222 & organ
2642 & nsa
2898 & gchq
2963 & equival
3614 & elsewher
159 & work
204 & made
3615 & 70
620 & chang
2646 & encrypt
3361 & standard

2801 & mid-1970
622 & saw
181 & major
3616 & non-secret
226 & advanc
1599 & public
812 & draft
265 & data
2646 & encrypt
1357 & standard
2807 & feder
1077 & regist
3554 & 17
3617 & march
2029 & 1975
336 & propos
2842 & de
1587 & cipher
3618 & submit
384 & research
1069 & group
145 & ibm
3492 & invit
1863 & nation
1972 & bureau
1357 & standard
1864 & nist
293 & effort
111 & develop
327 & secur
261 & electron
189 & commun
1248 & facil
151 & busi
3517 & bank
238 & financi
1222 & organ
3619 & advic
3620 & modif
2642 & nsa
3090 & act
3621 & scene
2421 & adopt
1383 & publish
2807 & feder
6 & inform
16 & process
1357 & standard
1599 & public
3622 & 1977
207 & current
3623 & fip
3624 & 46-3
2842 & de
2833 & publicli
52 & access
1587 & cipher
3625 & bless
1863 & nation
2520 & agenc
2642 & nsa
152 & releas
30 & specif
3626 & nb
3627 & stimul
2501 & explos
125 & academ
885 & interest
223 & cryptographi
208 & ag
2842 & de
2846 & offici
829 & replac
226 & advanc
2646 & encrypt
1357 & standard
2843 & ae
3225 & 2001
1864 & nist
2818 & announc
3623 & fip
3628 & 197
2873 & competit
1864 & nist
1461 & select
3629 & rijndael
3618 & submit
3630 & belgian
1586 & cryptograph
2843 & ae
2842 & de
327 & secur
2741 & variant
3631 & tripl
2842 & de
387 & see
3623 & fip
3624 & 46-3
3632 & incorpor
1863 & nation
3633 & organiz
1357 & standard
3047 & 56-bit
3634 & key-siz
1758 & shown
2200 & insuffici
3635 & guard
1780 & brute
1781 & forc
1782 & attack
1782 & attack
3636 & undertaken
3637 & cyber
3638 & civil-right
1069 & group
261 & electron
3639 & frontier
5 & foundat
2067 & 1997
3189 & succeed
3640 & 56
608 & hour
254 & �
3204 & stori
1794 & crack
2842 & de
1383 & publish
3641 & reilli
256 & associ
31 & result
49 & us
2881 & straight
2842 & de
2646 & encrypt
3642 & doubt
2936 & insecur
49 & us
2841 & cryptosystem
93 & design
859 & messag
2744 & protect
3156 & older
2841 & cryptosystem
49 & us
2842 & de
1101 & inde
859 & messag
1681 & sent
2834 & 1976
49 & us
2842 & de
2442 & risk
2972 & regardless
2842 & de
1760 & inher
1558 & qualiti
2842 & de
466 & kei
481 & size
3047 & 56-bit
190 & thought
2834 & 1976
2833 & publicli
2809 & whitfield
2810 & diffi
3643 & suspicion
1950 & govern
1222 & organ
1806 & suffici
1 & comput
110 & power
224 & break
2842 & de
859 & messag
1554 & clearli
32 & other
415 & achiev
491 & capabl
3362 & key

111 & develop
2834 & 1976
22 & fundament
620 & chang
2841 & cryptosystem
159 & work
1599 & public
632 & paper
683 & direct
223 & cryptographi
2809 & whitfield
2810 & diffi
2164 & martin
2811 & hellman
103 & introduc
3139 & radic
432 & method
231 & distribut
1586 & cryptograph
466 & kei
3644 & went
44 & solv
22 & fundament
36 & problem
223 & cryptographi
466 & kei
231 & distribut
74 & becom
810 & known
2889 & diffie-hellman
466 & kei
1178 & exchang
457 & articl
3627 & stimul
1596 & immedi
111 & develop
1104 & class
3645 & enciph
15 & algorithm
1783 & asymmetr
466 & kei
15 & algorithm
659 & prior
97 & time
49 & us
77 & modern
2646 & encrypt
15 & algorithm
1686 & symmetr
466 & kei
15 & algorithm
1586 & cryptograph
466 & kei
24 & underli
15 & algorithm
2832 & sender
3646 & recipi
1088 & keep
191 & secret
779 & electromechan
79 & machin
201 & wwii
279 & logic
1104 & class
2702 & caesar
3384 & atbash
1587 & cipher
806 & essenti
1587 & cipher
11 & system
202 & histori
466 & kei
799 & code
2974 & cours
3647 & codebook
231 & distribut
976 & kept
191 & secret
1197 & share
36 & problem
7 & practic
3648 & necess
466 & kei
11 & system
1178 & exchang
189 & commun
2879 & parti
327 & secur
659 & prior
49 & us
11 & system
112 & term
327 & secur
739 & channel
3649 & trustworthi
3587 & courier
3650 & briefcas
3651 & handcuf
3652 & wrist
3653 & face-to-fac
2378 & contact
3654 & loyal
3655 & carrier
3656 & pigeon
292 & requir
2091 & trivial
1146 & rapidli
74 & becom
3657 & unmanag
205 & number
3658 & particip
236 & increas
327 & secur
739 & channel
3659 & aren
132 & avail
466 & kei
1178 & exchang
2756 & sensibl
1586 & cryptograph
7 & practic
466 & kei
12 & frequent
620 & chang
991 & particular
859 & messag
653 & meant
327 & secur
179 & user
417 & separ
466 & kei
292 & requir
1672 & pair
179 & user
11 & system
1145 & kind
810 & known
191 & secret
466 & kei
1686 & symmetr
466 & kei
2841 & cryptosystem
3660 & d-h
466 & kei
1178 & exchang
3189 & succeed
71 & improv
2741 & variant
204 & made
274 & oper
11 & system
1001 & easier
327 & secur
202 & histori
2851 & contrast
1783 & asymmetr
466 & kei
2646 & encrypt
49 & us
1672 & pair
119 & mathemat
61 & relat
466 & kei
193 & decrypt
2646 & encrypt
105 & perform
49 & us
15 & algorithm
269 & addit
35 & properti
1672 & pair
466 & kei
3248 & deduc
810 & known
432 & method
661 & trial
940 & error
15 & algorithm
1145 & kind
810 & known
466 & kei
1783 & asymmetr
466 & kei
11 & system
49 & us
15 & algorithm
466 & kei
1672 & pair
179 & user
93 & design
466 & kei
1672 & pair
2510 & privat
191 & secret
155 & wide
132 & avail
327 & secur
739 & channel
466 & kei
1178 & exchang
2510 & privat
466 & kei
2793 & stai
191 & secret
466 & kei
155 & wide
810 & known
97 & time
2582 & compromis
327 & secur
48 & make
3661 & safe
1798 & reus
466 & kei
1672 & pair
1161 & indefinit
179 & user
1783 & asymmetr
466 & kei
15 & algorithm
189 & commun
327 & secur
2936 & insecur
739 & channel
179 & user
1685 & know
2510 & privat
466 & kei
179 & user
466 & kei
411 & take
894 & basic
1727 & scenario
3662 & alic
3663 & bob
1672 & pair
466 & kei
3664 & ve
49 & us
366 & year
179 & user
165 & start
859 & messag
1178 & exchang
466 & kei
3665 & unencrypt
2936 & insecur
756 & line
3662 & alic
2646 & encrypt
859 & messag
49 & us
2510 & privat
466 & kei
3666 & re-encrypt
31 & result
49 & us
3663 & bob
466 & kei
3667 & double-encrypt
859 & messag
1681 & sent
78 & digit
265 & data
1070 & wire
3662 & alic
3663 & bob
3663 & bob
1260 & receiv
1072 & bit
2547 & stream
193 & decrypt
49 & us
2510 & privat
466 & kei
193 & decrypt
1072 & bit
2547 & stream
49 & us
3662 & alic
466 & kei
2348 & final
31 & result
644 & recogniz
859 & messag
3663 & bob
3668 & confid
859 & messag
136 & actual
113 & came
1685 & know
3662 & alic
2510 & privat
466 & kei
3382 & presum
136 & actual
1678 & care
2510 & privat
466 & kei
3669 & eavesdrop
739 & channel
3663 & bob
2510 & privat
466 & kei
862 & order
69 & understand
859 & messag
1783 & asymmetr
15 & algorithm
2311 & reli
172 & effect
1104 & class
36 & problem
119 & mathemat
380 & call
2978 & one-wai
751 & function
292 & requir
1682 & rel
1 & comput
110 & power
508 & execut
3670 & vast
290 & amount
110 & power
2650 & revers
2650 & revers
278 & classic
39 & exampl
2978 & one-wai
751 & function
1122 & multipl
3671 & prime
205 & number
3567 & fairli
3672 & quick
969 & multipli
3671 & prime
768 & difficult
1455 & find
197 & factor
838 & product
3671 & prime
119 & mathemat
2978 & one-wai
751 & function
466 & kei
3673 & bad
1128 & choic
1586 & cryptograph
466 & kei
493 & fraction
466 & kei
522 & given
617 & length
2122 & suitabl
1783 & asymmetr
15 & algorithm
292 & requir
466 & kei
2956 & reach
221 & level
327 & secur
1682 & rel
1531 & shorter
1686 & symmetr
466 & kei
54 & gener
466 & kei
1672 & pair
105 & perform
2779 & encryption/decrypt
274 & oper
48 & make
1783 & asymmetr
15 & algorithm
212 & computation
2930 & expens
892 & compar
1686 & symmetr
15 & algorithm
1686 & symmetr
15 & algorithm
49 & us
872 & sequenc
1154 & random
3674 & unpredict
1072 & bit
466 & kei
3675 & dispos
3262 & session
466 & kei
2393 & quickli
54 & gener
3676 & short-term
49 & us
2796 & consequ
848 & common
7 & practic
49 & us
1783 & asymmetr
466 & kei
1178 & exchang
3675 & dispos
1531 & shorter
3677 & strong
1686 & symmetr
466 & kei
1170 & slower
1783 & asymmetr
15 & algorithm
327 & secur
858 & send
1686 & symmetr
3262 & session
466 & kei
832 & faster
1686 & symmetr
15 & algorithm
411 & take
3678 & remaind
859 & messag
1783 & asymmetr
466 & kei
223 & cryptographi
2889 & diffie-hellman
466 & kei
1178 & exchang
810 & known
466 & kei
1668 & /
2510 & privat
466 & kei
15 & algorithm
380 & call
2813 & rsa
15 & algorithm
2367 & seem
1664 & independ
111 & develop
731 & uk
241 & intellig
2520 & agenc
2818 & announc
2810 & diffi
2811 & hellman
2834 & 1976
2898 & gchq
152 & releas
1819 & document
413 & claim
111 & develop
466 & kei
223 & cryptographi
1599 & public
2810 & diffi
2811 & hellman
632 & paper
220 & variou
2338 & classifi
632 & paper
989 & written
2898 & gchq
128 & 1960
2899 & 1970
1916 & eventu
1235 & led
2695 & scheme
806 & essenti
2684 & ident
2813 & rsa
2646 & encrypt
2889 & diffie-hellman
466 & kei
1178 & exchang
3679 & 1973
3680 & 1974
1383 & publish
699 & inventor
2896 & jame
2897 & elli
2903 & clifford
2904 & cock
2901 & malcolm
2902 & williamson
204 & made
159 & work
223 & cryptographi
3363 & politics

111 & develop
2899 & 1970
3512 & broke
3681 & monopoli
1558 & qualiti
223 & cryptographi
995 & held
1950 & govern
1222 & organ
387 & see
3071 & levi
3478 & crypto
2598 & journalist
1385 & account
3068 & polici
2559 & controversi
97 & time
97 & time
1950 & govern
1222 & organ
52 & access
223 & cryptographi
2596 & readili
2655 & breakabl
206 & includ
1950 & govern
1000 & consider
2559 & controversi
3011 & conflict
2510 & privat
122 & began
3682 & subsid
354 & countri
39 & exampl
2284 & export
223 & cryptographi
468 & subject
1172 & restrict
3040 & 1996
2284 & export
223 & cryptographi
49 & us
466 & kei
1060 & longer
3511 & 40
1072 & bit
327 & secur
1791 & knowledg
1782 & attack
3683 & sharpli
249 & limit
2436 & recent
2276 & 2004
1647 & former
3029 & fbi
1917 & director
3684 & loui
3685 & freeh
3686 & testifi
3687 & 9/11
3688 & commiss
380 & call
1643 & law
49 & us
2646 & encrypt
171 & signific
53 & peopl
3689 & favor
3677 & strong
2646 & encrypt
49 & us
3690 & phil
3023 & zimmermann
3410 & wrote
3025 & 1991
152 & releas
2835 & pgp
3024 & pretti
1530 & good
2232 & privaci
1558 & qualiti
3478 & crypto
11 & system
231 & distribut
3691 & freewar
2056 & version
2835 & pgp
3692 & felt
3693 & threaten
3694 & legisl
1000 & consider
1950 & govern
292 & requir
3695 & backdoor
206 & includ
1586 & cryptograph
838 & product
111 & develop
11 & system
152 & releas
1597 & worldwid
820 & shortli
152 & releas
122 & began
2990 & crimin
1572 & investig
1950 & govern
3097 & justic
130 & depart
2152 & alleg
2560 & violat
2284 & export
1172 & restrict
3097 & justic
130 & depart
1916 & eventu
3696 & drop
855 & case
3023 & zimmermann
3691 & freewar
231 & distribut
2835 & pgp
399 & continu
186 & world
2835 & pgp
1916 & eventu
117 & becam
209 & internet
1357 & standard
3697 & rfc
3698 & 2440
3699 & openpgp
77 & modern
2633 & cryptanalysis

77 & modern
2748 & cryptanalyst
952 & har
205 & number
487 & integr
488 & circuit
252 & board
148 & part
3700 & eff
2842 & de
3701 & cracker
840 & contain
2245 & 1800
1221 & custom
2798 & chip
1780 & brute
1781 & forc
2842 & de
466 & kei
1557 & matter
355 & dai
77 & modern
1587 & cipher
2843 & ae
3702 & higher
1558 & qualiti
1783 & asymmetr
1587 & cipher
155 & wide
263 & consid
2940 & unbreak
2970 & poor
93 & design
9 & implement
2421 & adopt
2785 & cryptanalyt
224 & break
2865 & deploi
3478 & crypto
11 & system
2436 & recent
366 & year
769 & notabl
39 & exampl
2850 & broken
3478 & crypto
93 & design
206 & includ
2842 & de
3227 & wi-fi
2646 & encrypt
2695 & scheme
3226 & wep
463 & content
3119 & scrambl
11 & system
2646 & encrypt
529 & control
3118 & dvd
49 & us
3220 & a5/1
3221 & a5/2
1587 & cipher
3703 & gsm
1087 & cell
520 & phone
3704 & crypto1
1587 & cipher
155 & wide
2865 & deploi
3705 & mifar
278 & classic
1976 & smart
633 & card
3706 & nxp
1129 & semiconductor
3707 & spun
1721 & divis
1906 & philip
261 & electron
1686 & symmetr
1587 & cipher
1613 & thu
119 & mathemat
382 & idea
24 & underli
466 & kei
223 & cryptographi
2943 & proven
2940 & unbreak
854 & futur
119 & mathemat
307 & analysi
226 & advanc
1227 & render
11 & system
2311 & reli
2936 & insecur
6 & inform
390 & observ
3708 & forese
3281 & breakthrough
466 & kei
481 & size
2593 & recommend
327 & secur
7 & practic
1088 & keep
236 & increas
236 & increas
1 & comput
110 & power
292 & requir
224 & break
799 & code
74 & becom
833 & cheaper
132 & avail
387 & see
544 & also

2642 & nsa
2646 & encrypt
1329 & systems

3709 & steganography

1433 & timelin
2634 & cryptography

248 & topic
2634 & cryptography

3236 & japanes
2624 & cryptolog
3710 & 1500
3711 & meiji

186 & world
187 & war
2634 & cryptography

186 & world
187 & war
188 & ii
2634 & cryptography

509 & list
1586 & cryptograph
