89:, and a letter conversion alphabet to encode digraphs. The text is written in the grid, starting from a randomly chosen position, row by row, from left to right. The ciphertext is taken column by column, following the numbering of the columns. The first column to be taken is calculated from the minutes of the message time, the letter count of the message text and the randomly chosen column of the start cell. The message key contains the start position of the text in the grid, designated by the column and header digraphs. The digraphs for the message key are encoded with the letter conversion table and then included in the message header. The secret variable start cell and first column ensure a unique transposition for each message, making
1036:
77:
cipher, consisting of a grid with 25 columns and 24 rows. Each row contains 10 randomly placed white cells (to be filled with text) and 15 black cells. The columns are labeled with shuffled
61:(known plaintext) and some two weeks, making the tactical information outdated before it could be exploited. The combination of strength and ease of use made RS 44 an ideal hand cipher.
1016:
846:
43:
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273:
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895:
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1011:
966:
779:
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239:
https://derekbruff.org/blogs/fywscrypto/historical-crypto/rasterschlussel-44-the-stencil-on-steroids/
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821:
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314:
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1021:
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597:
451:
431:
411:
362:
342:
54:
39:
140:
119:
Cowan, Michael J. (2004). "Rasterschlüssel 44 – The
Epitome of Hand Field Ciphers".
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530:
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50:
36:
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615:
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81:
and numbers and the rows with digraphs. The key sheet also contains two letter
910:
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836:
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32:
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24:
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905:
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826:
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416:
290:
20:
520:
515:
456:
186:
155:"TICOM I-20 Interrogation of SonderFuehrer Dr Fricke of OKW/CHI"
681:
255:
233:
194:
Foundation for German communication and related technologies
42:
while working as a conscript in
Section IIb, of Group 2 of
847:
Cryptographically secure pseudorandom number generator
243:
959:
715:
624:
596:
568:
508:
470:
402:
376:
333:
300:
289:
187:"schlüsselanleitung Zum Rasterschlüssel 44 (RS44)"
57:, if successful, generally required a 40 letter
53:had considerable difficulties in breaking it.
693:
267:
8:
700:
686:
678:
297:
274:
260:
252:
248:
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85:alphabets to encode place names, prior to
1080:Research and development in Nazi Germany
1075:History of telecommunications in Germany
102:
114:
112:
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46:and introduced in March 1944 and the
7:
1085:Signals intelligence of World War II
180:
178:
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185:Fellgiebel, Erich (27 March 1944).
14:
31:. The cipher was designed by the
1035:
1034:
896:Information-theoretic security
222:Cipher Machines and Cryptology
1:
1012:Message authentication code
967:Cryptographic hash function
780:Cryptographic hash function
23:system, used by the German
19:(abbr. RS 44) was a manual
1101:
891:Harvest now, decrypt later
1030:
1007:Post-quantum cryptography
677:
251:
247:
133:10.1080/0161-110491892827
997:Quantum key distribution
987:Authenticated encryption
842:Random number generation
1070:History of cryptography
992:Public-key cryptography
982:Symmetric-key algorithm
785:Key derivation function
745:Cryptographic primitive
738:Authentication protocol
728:Outline of cryptography
723:History of cryptography
733:Cryptographic protocol
283:Classical cryptography
886:End-to-end encryption
832:Cryptojacking malware
1002:Quantum cryptography
926:Trusted timestamping
642:Index of coincidence
546:Reservehandverfahren
91:multiple anagramming
765:Cryptographic nonce
661:Kasiski examination
656:Information leakage
234:Interesting Ciphers
161:. NSA. 28 June 1945
17:Rasterschlüssel 44
871:Subliminal channel
855:Pseudorandom noise
802:Key (cryptography)
637:Frequency analysis
536:Rasterschlüssel 44
227:Rasterschlüssel 44
218:Rasterschlüssel 44
1065:Classical ciphers
1052:
1051:
1048:
1047:
931:Key-based routing
921:Trapdoor function
792:Digital signature
673:
672:
669:
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564:
563:
1092:
1038:
1037:
866:Insecure channel
702:
695:
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171:
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159:sites.google.com
151:
145:
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116:
93:very difficult.
69:The cipher is a
29:Second World War
1100:
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335:Polybius square
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1017:Random numbers
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989:
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941:Garlic routing
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861:Secure channel
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822:Key stretching
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770:Cryptovirology
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541:Reihenschieber
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302:Polyalphabetic
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256:
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229:archived from
224:
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212:External links
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127:(2): 115–148.
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1022:Steganography
1020:
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977:Stream cipher
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936:Onion routing
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916:Shared secret
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812:Key generator
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775:Hash function
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750:Cryptanalysis
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625:Cryptanalysis
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598:Steganography
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472:Transposition
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71:transposition
64:
62:
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55:Cryptanalysis
52:
49:
48:Allied forces
45:
41:
40:Walter Fricke
38:
37:cryptographer
35:and sometime
34:
30:
26:
22:
18:
972:Block cipher
817:Key schedule
807:Key exchange
797:Kleptography
760:Cryptosystem
709:Cryptography
535:
531:One-time pad
404:Substitution
199:19 September
197:. Retrieved
193:
165:19 September
163:. Retrieved
158:
149:
124:
120:
83:substitution
68:
51:codebreakers
16:
15:
960:Mathematics
951:Mix network
583:Code talker
462:Running key
394:Four-square
121:Cryptologia
27:during the
1059:Categories
911:Ciphertext
881:Decryption
876:Encryption
837:Ransomware
632:Cryptogram
526:Kama Sutra
495:Rail fence
490:Myszkowski
437:Chaocipher
389:Two-square
368:VIC cipher
320:Trithemius
97:References
87:encryption
33:astronomer
901:Plaintext
556:Solitaire
294:by family
25:Wehrmacht
1040:Category
946:Kademlia
906:Codetext
849:(CSPRNG)
644:(Units:
480:Columnar
427:Beaufort
384:Playfair
358:Tap code
353:Nihilist
325:Vigenère
141:29679478
79:digraphs
716:General
422:Autokey
310:Alberti
291:Ciphers
44:OKW/Chi
827:Keygen
611:Grille
551:Slidex
485:Double
452:Pigpen
432:Caesar
417:Atbash
412:Affine
377:Square
363:Trifid
343:ADFGVX
315:Enigma
139:
75:grille
73:based
65:Design
21:cipher
857:(PRN)
606:Bacon
570:Codes
521:DRYAD
516:BATCO
509:Other
500:Route
457:ROT13
442:Great
348:Bifid
190:(PDF)
137:S2CID
648:and
616:Null
588:Poem
578:Book
447:Hill
201:2017
167:2017
59:crib
650:Nat
646:Ban
232:on
220:on
129:doi
1061::
192:.
175:^
157:.
135:.
125:28
123:.
105:^
701:e
694:t
687:v
652:)
275:e
268:t
261:v
203:.
169:.
143:.
131::
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.