id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0021100 | XNWNXUMYFEMVRNVNWREOGASWWSVRIJEFCUYYHVDYUGEUGRJQDHJNUVZNAMTJHBHFILCTSETUURKQUXUFGYBJUNZVERXBRANCZEOIPXHGYXWWMVGBKUCIMXWWIPPNUVBDAHRZOZRVHJLAZUVNL | XNWNXUMYFEMVRNVNWREOGASWWSVRIJEFCUYYHVDYUGEUGRJQDHJNUVZNAMTJHBHFILCTSETUURKQUXUFGYBJUNZVERXBRANCZEOIPXHGYXWWMVGBKUCIMXWWIPPNUVBDAHRZOZRVHJLAZUVNL | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | one_time_pad | one_time_pad | null | {} | hard | en | 145 | 145 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0019232 | PUBLI CINFZ ASTRU CTURE DESEX VESCA REFUZ DESIG NBEAU FORTI STHEX ECIPX OCALZ FVIGE NEREA NDDEC RYPTS ITSEZ FAXXX | PUBLI CINFZ ASTRU CTURE DESEX VESCA REFUZ DESIG NBEAU FORTI STHEX ECIPX OCALZ FVIGE NEREA NDDEC RYPTS ITSEZ FAXXX | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | commercial_code | commercial_code | null | {} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0017816 | BDYM CVMR SJTZ AKSS XDCY LVEO ERYH BHUK SBMO ROJO NXBA ZNLA IQAE MIVE ETQP QYII PEKD QQIY VVFN LZNJ FLNX ABSJ YTMU JADL NZU | BDYM CVMR SJTZ AKSS XDCY LVEO ERYH BHUK SBMO ROJO NXBA ZNLA IQAE MIVE ETQP QYII PEKD QQIY VVFN LZNJ FLNX ABSJ YTMU JADL NZU | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | vernam | vernam | null | {} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0013525 | 40 76 62 48 34 81 33 70 35 58 41 63 25 66 26 15 66 43 99 26 25 67 3 45 80 23 81 67 92 30 22 91 60 23 3 46 34 22 36 14 22 15 87 92 35 96 82 11 43 93 87 27 39 87 93 63 17 33 34 11 91 33 27 35 17 86 88 92 4 26 52 22 58 81 50 33 87 14 3 49 91 92 40 2 68 68 48 58 50 63 27 91 25 23 34 81 86 26 58 64 43 88 33 39 63 67 3 23 27... | 40 76 62 48 34 81 33 70 35 58 41 63 25 66 26 15 66 43 99 26 25 67 3 45 80 23 81 67 92 30 22 91 60 23 3 46 34 22 36 14 22 15 87 92 35 96 82 11 43 93 87 27 39 87 93 63 17 33 34 11 91 33 27 35 17 86 88 92 4 26 52 22 58 81 50 33 87 14 3 49 91 92 40 2 68 68 48 58 50 63 27 91 25 23 34 81 86 26 58 64 43 88 33 39 63 67 3 23 27... | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING CAREFULLY | homophonic | homophonic | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
four-square-v2-0099 | NCEATQBANCQGQAULSKGSOSIBNKTQETRMNSTTGCNFSRLOQNAPPZINTUGNIFQAITFSCEAOBNUTNU | NCEATQBANCQGQAULSKGSOSIBNKTQETRMNSTTGCNFSRLOQNAPPZINTUGNIFQAITFSCEAOBNUTNU | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
affine-v3-0799 | PMSRYP ICS RNM CHHXM VCXX CPD WPRAWRMD RNM ICGM VYZUM RNCR NYXDI RNM HXCPMRI WP RNMWZ HCRNI | PMSRYP ICS RNM CHHXM VCXX CPD WPRAWRMD RNM ICGM VYZUM RNCR NYXDI RNM HXCPMRI WP RNMWZ HCRNI | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 75 | 91 | cipher_museum | 2.0 | public | null | null |
lorenz-254 | EVACEATETHEBASM | EVACEATETHEBASM | EVACUATE THE BASE | lorenz | lorenz | machine | {
"type": "seed",
"value": "ENIGMA"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
caesar-la-060 | Z KGPMDWPN PIPH | Z KGPMDWPN PIPH | E PLURIBUS UNUM | caesar | caesar | substitution | {
"type": "shift",
"value": 21
} | beginner | la | 13 | 15 | cipher_museum | 0.2 | public | null | null |
purple-v3-0109 | RAXIVDKHBUSFZYJT | RAXIVDKHBUSFZYJT | SOUND THE TRUMPETS | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
bazeries-017 | YHPYPFBPJYTGFJE | YHPYPFBPJYTGFJE | MEET AT THE OLD OAK | bazeries | bazeries | transposition | {
"type": "integer",
"value": 42
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-v2-0238 | 7194 7911 7911 8854 7194 8437 7529 7194 8437 7467 7720 8528 7256 7194 8528 7467 7401 8100 8038 7401 7467 7338 7467 8206 8603 7720 8100 8038 7654 7467 8038 7338 7467 8854 7654 7467 8038 7194 7256 7911 7467 8603 8100 7194 8603 8603 7194 7338 7849 8854 7467 7974 8685 8528 8603 8528 7467 7467 7974 8685 8038 7194 7256 7911 ... | 7194 7911 7911 8854 7194 8437 7529 7194 8437 7467 7720 8528 7256 7194 8528 7467 7401 8100 8038 7401 7467 7338 7467 8206 8603 7720 8100 8038 7654 7467 8038 7338 7467 8854 7654 7467 8038 7194 7256 7911 7467 8603 8100 7194 8603 8603 7194 7338 7849 8854 7467 7974 8685 8528 8603 8528 7467 7467 7974 8685 8038 7194 7256 7911 ... | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 604 | 754 | cipher_museum | 2.0 | public | null | null |
cda-0021686 | 66 80 68 29 61 65 69 61 50 66 50 69 29 52 50 65 36 82 80 61 80 82 68 80 80 68 29 25 82 57 82 66 66 82 80 61 89 50 66 36 69 59 66 61 59 20 61 66 50 66 59 66 50 69 29 66 36 82 76 69 59 80 61 72 59 68 80 82 52 50 65 36 82 80 59 61 82 61 66 89 69 55 82 43 89 69 80 11 65 69 57 43 20 50 59 61 61 72 59 68 80 82 61 52 80 43 65... | 66 80 68 29 61 65 69 61 50 66 50 69 29 52 50 65 36 82 80 61 80 82 68 80 80 68 29 25 82 57 82 66 66 82 80 61 89 50 66 36 69 59 66 61 59 20 61 66 50 66 59 66 50 69 29 66 36 82 76 69 59 80 61 72 59 68 80 82 52 50 65 36 82 80 59 61 82 61 66 89 69 55 82 43 89 69 80 11 65 69 57 43 20 50 59 61 61 72 59 68 80 82 61 52 80 43 65... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | wallis_cipher | wallis_cipher | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
red-type-a-v3-0183 | RESDEZNORRUGSYNYPVOYDHONABXYTHUZCOQODQUMCUXNYUDYMNEGEJYHYJUCOGUPTMIHALNUTWOREFENOEDJ | RESDEZNORRUGSYNYPVOYDHONABXYTHUZCOQODQUMCUXNYUDYMNEGEJYHYJUCOGUPTMIHALNUTWOREFENOEDJ | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0400 | GSSIRAATVVAFUDAGWTVSVSMBBUGTIRVEDABDVNVLHAIHNJXKWAIMOAFVLEIIEIBUBAEARUIPOSABRVIFAPBIEIJUFNTBOXFABBI | GSSIRAATVVAFUDAGWTVSVSMBBUGTIRVEDABDVNVLHAIHNJXKWAIMOAFVLEIIEIBUBAEARUIPOSABRVIFAPBIEIJUFNTBOXFABBI | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 99 | 99 | cipher_museum | 2.0 | public | null | null |
kama-sutra-174 | VMY YGYHE JGFRZ VMY ZEZVYH PYZLNG EFAW XLDMYW UXXFWPLGNIE RLVM NWYUV XUWY | VMY YGYHE JGFRZ VMY ZEZVYH PYZLNG EFAW XLDMYW UXXFWPLGNIE RLVM NWYUV XUWY | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 62 | 73 | cipher_museum | 0.2 | public | null | null |
lorenz-v3-0378 | THESJEGEBEGINS | THESJEGEBEGINS | THE SIEGE BEGINS | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0021728 | 855 860 803 855 857 826 859 861 857 825 843 839 999 806 826 847 822 814 853 855 999 837 800 847 999 813 801 808 823 999 835 814 858 859 813 852 999 857 844 999 801 999 811 826 816 817 812 851 813 839 857 999 834 813 859 857 812 851 999 809 824 815 816 825 814 999 802 841 810 999 821 813 835 834 838 801 840 999 826 841 ... | 855 860 803 855 857 826 859 861 857 825 843 839 999 806 826 847 822 814 853 855 999 837 800 847 999 813 801 808 823 999 835 814 858 859 813 852 999 857 844 999 801 999 811 826 816 817 812 851 813 839 857 999 834 813 859 857 812 851 999 809 824 815 816 825 814 999 802 841 810 999 821 813 835 834 838 801 840 999 826 841 ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | culper_ring | culper_ring | null | {} | hard | en | 117 | 117 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cardano-autokey-v3-0395 | OALVZONAHTYALTTSDAPXHYOITPNQEFERRRDEKZHLWYBHUFMVSWZVTKHEZRALJJHHVRLRUJZVEZQRG | OALVZONAHTYALTTSDAPXHYOITPNQEFERRRDEKZHLWYBHUFMVSWZVTKHEZRALJJHHVRLRUJZVEZQRG | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0226 | 09900 09999 09910 09997 09992 09999 09993 09907 09907 09919 09993 09902 09903 09913 09900 09903 09907 09907 09919 09993 09902 09903 09907 09907 09919 09993 09902 09903 09907 09907 09903 09902 09904 09999 09906 09999 09908 09903 09992 09903 09907 09900 09903 09907 09905 09919 09993 09910 09997 09910 09993 09902 09990 09... | 09900 09999 09910 09997 09992 09999 09993 09907 09907 09919 09993 09902 09903 09913 09900 09903 09907 09907 09919 09993 09902 09903 09907 09907 09919 09993 09902 09903 09907 09907 09903 09902 09904 09999 09906 09999 09908 09903 09992 09903 09907 09900 09903 09907 09905 09919 09993 09910 09997 09910 09993 09902 09990 09... | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 345 | 413 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0098 | IHQIUJYMVHRPTSWDGUPULPRUVHAMUSYMSYTRPDXPPWGUJKGLTNVHPDLLMLUKESAOASZUSWMVHCPQAGTLXEHBPDVPGCESXLAXCYEMJKBULPIPCXZTIPTMXVMPVPTRWRLPIPVIVPIWRAZJSCITASZUNCXKAIASODCY | IHQIUJYMVHRPTSWDGUPULPRUVHAMUSYMSYTRPDXPPWGUJKGLTNVHPDLLMLUKESAOASZUSWMVHCPQAGTLXEHBPDVPGCESXLAXCYEMJKBULPIPCXZTIPTMXVMPVPTRWRLPIPVIVPIWRAZJSCITASZUNCXKAIASODCY | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0002052 | SPPZ GOQL BHHU MDIL QLFX VVWF SXMX JVOF EMVK BFFZ VIMG ZVUL FJHU IDZL WITZ XEMF YSBX UKUO WCKI PVFS DLMO MFME JSV | SPPZ GOQL BHHU MDIL QLFX VVWF SXMX JVOF EMVK BFFZ VIMG ZVUL FJHU IDZL WITZ XEMF YSBX UKUO WCKI PVFS DLMO MFME JSV | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | gronsfeld | gronsfeld | null | {
"key": "31416"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
m209-v3-0390 | JWZXXEBCMQPDSSRJMDZYRIJLPYGAWDQYATRASMQDMXPPHVIWPKKQAYKWPZZDBZLQYCCYYQQIASVB | JWZXXEBCMQPDSSRJMDZYRIJLPYGAWDQYATRASMQDMXPPHVIWPKKQAYKWPZZDBZLQYCCYYQQIASVB | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
m94-v2-0092 | ADTDZFCXEVKKZXIKFAMVVBEQKNSNUGFQWTLDJVSUQFVQIXXIPHRQOYZUXDEXMJRFXSIXFDVKGROPZQ | ADTDZFCXEVKKZXIKFAMVVBEQKNSNUGFQWTLDJVSUQFVQIXXIPHRQOYZUXDEXMJRFXSIXFDVKGROPZQ | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0388 | TZUSTBUTVERIFY | TZUSTBUTVERIFY | TRUST BUT VERIFY | lorenz | lorenz | machine | {
"type": "seed",
"value": "BLETCHLEY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0826 | RVQWMUIGUFWFPQJWFTPTSFVKJCJTGXBUQQYIFDXXUPHSFMMCVOVTVDGPWGPDDICPGFSFRTS | RVQWMUIGUFWFPQJWFTPTSFVKJCJTGXBUQQYIFDXXUPHSFMMCVOVTVDGPWGPDDICPGFSFRTS | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "11235"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0020104 | 3.5.8 10.28.9 20.42.15 2.2.10 2.35.6 7.43.7 10.10.9 10.39.11 14.19.9 8.13.12 15.23.8 6.1.2 12.22.1 20.32.8 8.43.11 12.14.1 13.1.11 17.47.6 17.10.15 7.30.2 14.47.13 19.38.9 2.15.6 8.19.2 15.25.13 18.25.5 2.33.3 11.36.11 3.1.5 9.16.11 14.11.15 8.42.11 16.44.4 2.47.1 10.31.5 7.34.11 7.10.1 16.23.11 5.49.4 5.15.5 8.9.6 6.3... | 3.5.8 10.28.9 20.42.15 2.2.10 2.35.6 7.43.7 10.10.9 10.39.11 14.19.9 8.13.12 15.23.8 6.1.2 12.22.1 20.32.8 8.43.11 12.14.1 13.1.11 17.47.6 17.10.15 7.30.2 14.47.13 19.38.9 2.15.6 8.19.2 15.25.13 18.25.5 2.33.3 11.36.11 3.1.5 9.16.11 14.11.15 8.42.11 16.44.4 2.47.1 10.31.5 7.34.11 7.10.1 16.23.11 5.49.4 5.15.5 8.9.6 6.3... | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX FAIL CLOSED IS A POSTURE NOT A SLOGAN | book_cipher | book_cipher | null | {} | hard | en | 97 | 97 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
alberti-disk-119 | AHUWNZLTXVARBMSXQCULKMZACDTAIJWBELQWVIVKNFNVJCJUGOFWNXBNNPEMNALSCOHUMZBDJDYIQHJADXKNIQPIKOUIUERDVTMTMDMAEIUVZLTILNYRZEDRQTJTGNANAZTSIBEZEIQBKLZKQFPK | AHUWNZLTXVARBMSXQCULKMZACDTAIJWBELQWVIVKNFNVJCJUGOFWNXBNNPEMNALSCOHUMZBDJDYIQHJADXKNIQPIKOUIUERDVTMTMDMAEIUVZLTILNYRZEDRQTJTGNANAZTSIBEZEIQBKLZKQFPK | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 7
} | expert | en | 148 | 148 | cipher_museum | 0.2 | public | null | null |
adfgvx-v2-0209 | ADDFDGFVAFDGAGFXAXDFAGFVFDAFAAAVFAAXADDFAGDVGAAXAXAVGDDVAADGADAAGGAFAAAAADADDDDXAXDGDVAXFAAGFAGAXDDDGAXAGDDFDFDFDGDVAAAVAAAGGAAVDDDVDXDXAGAVGGAXFDFDFVAXGAAVAX | ADDFDGFVAFDGAGFXAXDFAGFVFDAFAAAVFAAXADDFAGDVGAAXAXAVGDDVAADGADAAGGAFAAAAADADDDDXAXDGDVAXFAAGFAGAXDDDGAXAGDDFDFDFDGDVAAAVAAAGGAAVDDDVDXDXAGAVGGAXFDFDFVAXGAAVAX | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 158 | 158 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0395 | VUIXAVGHLKHTHXTCQYYRXYCPPSQLARIFNQCDBYPFPITWVLNWNGDYKAGTJIFLOPOSTYMSGFZSWEKOL | VUIXAVGHLKHTHXTCQYYRXYCPPSQLARIFNQCDBYPFPITWVLNWNGDYKAGTJIFLOPOSTYMSGFZSWEKOL | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0014138 | 66 36 82 11 82 66 82 52 66 50 95 82 61 66 59 11 50 82 61 65 68 66 66 82 80 29 61 20 82 76 69 80 82 77 68 55 50 29 25 52 57 68 50 77 61 | 66 36 82 11 82 66 82 52 66 50 95 82 61 66 59 11 50 82 61 65 68 66 66 82 80 29 61 20 82 76 69 80 82 77 68 55 50 29 25 52 57 68 50 77 61 | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | wallis_cipher | wallis_cipher | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
vic-v2-0346 | 5843841915884688828046895880888361917275503888294159123594338758488913948488867853808881391787815848891394848824378558438682884393346916915386813931913812678092878718783387801898434347897513875804689578770691584791828892878178635848881588439337015919138043591 | 5843841915884688828046895880888361917275503888294159123594338758488913948488867853808881391787815848891394848824378558438682884393346916915386813931913812678092878718783387801898434347897513875804689578770691584791828892878178635848881588439337015919138043591 | THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 259 | 259 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0449 | ENLMFXFAVEAEPLRBSWUFSXOTSAPAPIBLRALEFVBLLMIGTVTWAWNDSPXAIRBLKTEEFSEIAEF | ENLMFXFAVEAEPLRBSWUFSXOTSAPAPIBLRALEFVBLLMIGTVTWAWNDSPXAIRBLKTEEFSEIAEF | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0846 | QFAIUHTJUVEZPDNUKI | QFAIUHTJUVEZPDNUKI | LOWER THE DRAWBRIDGE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0013707 | . ... ... . . . .... ... .... ... .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .... . ..... . . . ... .. ... ..... .. .. ... ..... .... ... .. ... .... . .... . ..... .... .. ... ... .... ... . ..... . ... .... ..... .... .. .. .... .... .... ... | . ... ... . . . .... ... .... ... .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .... . ..... . . . ... .. ... ..... .. .. ... ..... .... ... .. ... .... . .... . ..... .... .. ... ... .... ... . ..... . ... .... ..... .... .. .. .... .... .... ... | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | tap_code | tap_code | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
cda-0015223 | 34 35 15 33 43 34 45 42 13 15 44 34 34 31 43 11 31 31 34 52 24 33 14 15 35 15 33 14 15 33 44 51 15 42 24 21 24 13 11 44 24 34 33 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 | 34 35 15 33 43 34 45 42 13 15 44 34 34 31 43 11 31 31 34 52 24 33 14 15 35 15 33 14 15 33 44 51 15 42 24 21 24 13 11 44 24 34 33 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | polybius | polybius | null | {} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
voynich-render-v2-0044 | yijoqex ekd loru gkldx adsiqd gcdkq edogcx gcd vofkorg rdvdq goxgd edogc azg iryd | yijoqex ekd loru gkldx adsiqd gcdkq edogcx gcd vofkorg rdvdq goxgd edogc azg iryd | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 68 | 81 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0242 | RTAQVRVPQHHAEWPGA | RTAQVRVPQHHAEWPGA | OLD IRONSIDES HOLDS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
diana-v2-0562 | SNJAMGZMKAZVKBCDZXJCMSPQRYDEDYIELWYTXCXPSICQGMPCMSTLQLAHBVDNDTINDKTL | SNJAMGZMKAZVKBCDZXJCMSPQRYDEDYIELWYTXCXPSICQGMPCMSTLQLAHBVDNDTINDKTL | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0583 | QLBFQBEDCBCLIKTCEDKZUGNDUNDEEGDXPLRKFQIAOKUTGIODXFDWGURKQXAQQLUNBCEZENLQXBFBTUFGDSIMSYPLDXGZUNIMXFCIRIXTGIRYKNICIYCWXKRBUZIOTNZCOKDECQNRHOTNNDEVRFDNKQIHBXXE | QLBFQBEDCBCLIKTCEDKZUGNDUNDEEGDXPLRKFQIAOKUTGIODXFDWGURKQXAQQLUNBCEZENLQXBFBTUFGDSIMSYPLDXGZUNIMXFCIRIXTGIRYKNICIYCWXKRBUZIOTNZCOKDECQNRHOTNNDEVRFDNKQIHBXXE | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 156 | 156 | cipher_museum | 2.0 | public | null | null |
cda-0021873 | 2876 04479 1343 1604 7589 4716 01942 0953 4797 02920 4442 0996 2894 1354 1646 4476 0958 01587 4104 01608 00384 6053 6645 5686 01608 5988 3821 01650 06290 06280 01607 05745 1965 5712 01597 05424 6688 01603 04435 00997 7928 1310 2834 05967 6327 5656 02830 00648 06621 06305 2858 4759 4432 01026 0408 01619 6023 0334 05674 ... | 2876 04479 1343 1604 7589 4716 01942 0953 4797 02920 4442 0996 2894 1354 1646 4476 0958 01587 4104 01608 00384 6053 6645 5686 01608 5988 3821 01650 06290 06280 01607 05745 1965 5712 01597 05424 6688 01603 04435 00997 7928 1310 2834 05967 6327 5656 02830 00648 06621 06305 2858 4759 4432 01026 0408 01619 6023 0334 05674 ... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | zimmermann | zimmermann | null | {} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
alberti-disk-v2-0407 | NFYJSMTSTYKNQXEPIWBXT | NFYJSMTSTYKNQXEPIWBXT | PATIENCE BRINGS VICTORY | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0046 | FALJFCVHFPPFORJ | FALJFCVHFPPFORJ | THE FACTORY ROARS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0431 | LKTKAGXAJTHSFVEBWNINXYVFUCSJGBPUJOWBGRPSHYGPKZSPAGGYGXGBAZTMCITMYDZEJSQEBRM | LKTKAGXAJTHSFVEBWNINXYVFUCSJGBPUJOWBGRPSHYGPKZSPAGGYGXGBAZTMCITMYDZEJSQEBRM | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0567 | HSXOOFWUTOXIJBHGAUZLFXNITJIMIVGLOAOPPEAOPXNITYLUMVGVHMLKIBMSULGTLPSZXETMYP | HSXOOFWUTOXIJBHGAUZLFXNITJIMIVGLOAOPPEAOPXNITYLUMVGVHMLKIBMSULGTLPSZXETMYP | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
red-type-a-047 | MYDUCAGILACYEPINYIGURYFUBWEYBYWUVWYDONURXQYFAPCPE | MYDUCAGILACYEPINYIGURYFUBWEYBYWUVWYDONURXQYFAPCPE | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYORED"
} | advanced | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
diana-v2-0258 | MHNNEANGZVAHC | MHNNEANGZVAHC | THE PASS IS HELD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0013191 | GLDV DLUR PYJC ASDZ ROSI ONDG GDQD FLBO GXPD LCTE CVEL UQOO UZKQ BGLM UFIO RERF TCIJ LSYA AVET PLXJ VKLS DHWK VOIN TDIO AJYG VMZM OZKB GCPG FSJE EPSW GTQT BIWZ CRZZ AOPO IYNV UMIK YAEV IMHY YZH | GLDV DLUR PYJC ASDZ ROSI ONDG GDQD FLBO GXPD LCTE CVEL UQOO UZKQ BGLM UFIO RERF TCIJ LSYA AVET PLXJ VKLS DHWK VOIN TDIO AJYG VMZM OZKB GCPG FSJE EPSW GTQT BIWZ CRZZ AOPO IYNV UMIK YAEV IMHY YZH | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | vernam | vernam | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
wheatstone-v3-0043 | FROOTPRNRLRYURGLDRTNDX | FROOTPRNRLRYURGLDRTNDX | MESSAGE RECEIVED CLEARLY | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
porta-v3-0473 | EJPFUOEXBEVLWXTGHFSAQTXKGLARTMHNWBVPIRFMDUTVNZRTUNAMGTTYWYYFTLWENHFPHNH | EJPFUOEXBEVLWXTGHFSAQTXKGLARTMHNWBVPIRFMDUTVNZRTUNAMGTTYWYYFTLWENHFPHNH | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
vic-134 | 49348391801909182390879073902 | 49348391801909182390879073902 | AWAIT FURTHER ORDERS | vic | vic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 29 | 29 | cipher_museum | 0.2 | public | null | null |
beaufort-de-001 | TCTTXBNLODWDUGEPK | TCTTXBNLODWDUGEPK | ICH BIN EIN BERLINER | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | de | 17 | 17 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v3-0246 | DQESMLVXPEKGGWNHBPG | DQESMLVXPEKGGWNHBPG | MEASURE TWICE CUT ONCE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0262 | MLSJUQBFNPBBGHUSFYPYBTEUKIAKEWLYWEPPNMHPBJPGYIPQBBLPGJQAGJVNBKAAVNBJUVNPBBGHQWTEYD | MLSJUQBFNPBBGHUSFYPYBTEUKIAKEWLYWEPPNMHPBJPGYIPQBBLPGJQAGJVNBKAAVNBJUVNPBBGHQWTEYD | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
two-square-128 | SEQSRELGARCDTIENSF | SEQSRELGARCDTIENSF | SEND REINFORCEMENTS | two_square | two_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v3-0371 | LZWLZAFJWVDAFWKLGGVXAJESLTSDSUDSNSSKLZWJMKKASFUSNSDJQUZSJYWVSUJGKKLZWHDSAF | LZWLZAFJWVDAFWKLGGVXAJESLTSDSUDSNSSKLZWJMKKASFUSNSDJQUZSJYWVSUJGKKLZWHDSAF | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vic-v2-0132 | 67858890608093190838088693 | 67858890608093190838088693 | ABORT AND WITHDRAW | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
typex-v3-0146 | AKDQMOOJTK | AKDQMOOJTK | DOT DASH DOT | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0906 | PLLTDZFGMUDFLGKQPLBGAZGUFMGKTLWHIEPULQKQPLLTDZFGEOAZDRPLGSUFYNTULNZRGIAV | PLLTDZFGMUDFLGKQPLBGAZGUFMGKTLWHIEPULQKQPLLTDZFGEOAZDRPLGSUFYNTULNZRGIAV | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1044 | HEARPSY KP ORVSD | HEARPSY KP ORVSD | LIBERTY OR DEATH | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0275 | ZIQASQEBPEYMCWYQLQPIVBOCGWCOMSILKIEQLFBMVIAWYETBPIOQUWJEZBIXKBXSMQOYMEXBV | ZIQASQEBPEYMCWYQLQPIVBOCGWCOMSILKIEQLFBMVIAWYETBPIOQUWJEZBIXKBXSMQOYMEXBV | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1226 | XOYUIZSDGYVLWARFEYCCVWCSJKENHZIGLBVNTLPCDSSAVITZTIZLTUZJNZFGMOSWSDTTBXOHPTIZEPLVMCTGV | XOYUIZSDGYVLWARFEYCCVWCSJKENHZIGLBVNTLPCDSSAVITZTIZLTUZJNZFGMOSWSDTTBXOHPTIZEPLVMCTGV | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "VALOR"
} | intermediate | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
typex-v3-0249 | AAHJYRWWDEURZETPFIFYM | AAHJYRWWDEURZETPFIFYM | THE TELEGRAPH TRANSMITS | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0509 | WEETIUTBHEBSMNATERNNAAIEFAHOELAHHHCIAHMLROPOTLLRTETRALTOETTPLSFAELYYETISNFYIIDHETCAABARETGIAUNTTVARURDTENHTLNSEHUIHEQEEOCAGHEDRSERDTAEEWRHBIERTUSSTETTDNOWTLRSAHPENEDIEEE | WEETIUTBHEBSMNATERNNAAIEFAHOELAHHHCIAHMLROPOTLLRTETRALTOETTPLSFAELYYETISNFYIIDHETCAABARETGIAUNTTVARURDTENHTLNSEHUIHEQEEOCAGHEDRSERDTAEEWRHBIERTUSSTETTDNOWTLRSAHPENEDIEEE | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
m94-v2-0087 | IGUVGSGWPONSLVIFYMFAXEBNUIVJFLYQQGIFNBDWEXCQBGPRVMLENDZGZCPNULYBZDSHPLGPFKHL | IGUVGSGWPONSLVIFYMFAXEBNUIVJFLYQQGIFNBDWEXCQBGPRVMLENDZGZCPNULYBZDSHPLGPFKHL | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0286 | THISABOVEALLTOTHINEOWNSELFBETRUEANDITMUSTFOLLOWASNIGHTTHEDAY | THISABOVEALLTOTHINEOWNSELFBETRUEANDITMUSTFOLLOWASNIGHTTHEDAY | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0235 | IYVOTJDGGJMMMOFNYPLO | IYVOTJDGGJMMMOFNYPLO | THE COMPASS POINTS TRUE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0674 | LWDGWMAKOJVIUEYRULYGNNVXJCPLOWMMHZMBBOKAJTPGSCVLBJABHYYNLLGYQJBZTWKL | LWDGWMAKOJVIUEYRULYGNNVXJCPLOWMMHZMBBOKAJTPGSCVLBJABHYYNLLGYQJBZTWKL | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0374 | 87 28 49 65 36 87 47 77 65 56 85 25 69 65 44 85 56 79 | 87 28 49 65 36 87 47 77 65 56 85 25 69 65 44 85 56 79 | LOOSE LIPS SINK SHIPS | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
cda-0011376 | J VXMNU LJW LUJBBROH YJCCNAWB KDC RC LJW JUBX KN FAXWP OANZDNWLH JWJUHBRB LJW ANENJU FNJT LRYQNAB | J VXMNU LJW LUJBBROH YJCCNAWB KDC RC LJW JUBX KN FAXWP OANZDNWLH JWJUHBRB LJW ANENJU FNJT LRYQNAB | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | gronsfeld | gronsfeld | null | {
"key": "99999"
} | hard | en | 81 | 81 | synthetic_educational | null | null | [] | |
cda-0020480 | GFSRD WCTKO SOVQO TCNIN ILQXQ JCXGS LYPEE KIMPE VWHVQ JPEOZ KBZTZ EGOXX AWXES EKQME ADAGI IWVOX AMDKC NIXRC XRHCB VGIVP VGUDC VSWDO LFLWW CSQKV TNTDE HFBWJ LXPNZ YSIUX KJVIU XJPLT SLMUJ QYNXO ZRDRK FVKSD EURF | GFSRD WCTKO SOVQO TCNIN ILQXQ JCXGS LYPEE KIMPE VWHVQ JPEOZ KBZTZ EGOXX AWXES EKQME ADAGI IWVOX AMDKC NIXRC XRHCB VGIVP VGUDC VSWDO LFLWW CSQKV TNTDE HFBWJ LXPNZ YSIUX KJVIU XJPLT SLMUJ QYNXO ZRDRK FVKSD EURF | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | one_time_pad | one_time_pad | null | {} | hard | en | 174 | 174 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0004117 | IHXD EJVL RMOX SUAX IXFO ZNVN WAFR UMNW WUXG MGKE PLZV IZPT WZGG FINV FGWC XRUI FWXE OLAA XKET CKVV WEIN LRTI PWTA MEKZ IYMZ NTCT MLZT VGCQ AXAM FFTM PYVR FXIL VKTR XWHM MASL LOCU ZHCM MNJG GXTN MMFA LOKW WYRH DSUW HOXD OFEL ZTOO STTR ZUCW MQVM NJGG | IHXD EJVL RMOX SUAX IXFO ZNVN WAFR UMNW WUXG MGKE PLZV IZPT WZGG FINV FGWC XRUI FWXE OLAA XKET CKVV WEIN LRTI PWTA MEKZ IYMZ NTCT MLZT VGCQ AXAM FFTM PYVR FXIL VKTR XWHM MASL LOCU ZHCM MNJG GXTN MMFA LOKW WYRH DSUW HOXD OFEL ZTOO STTR ZUCW MQVM NJGG | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | autokey | autokey | null | {
"primer": "PATTERN"
} | hard | en | 200 | 200 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
chaocipher-191 | RWNZOIWLVNYLD | RWNZOIWLVNYLD | CHANGE OF PLANS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0016234 | YTED YCHO ROKA INCH EDYR CHEO LOXE DYPC HOLQ OTED YCTA IINS HAII NOKE DYYT EDYA IIIN OTAI INSH EDYO TAIN SHAL SHED YQOK EDYO KSHY RAII NQOK EDYC HEOL | YTED YCHO ROKA INCH EDYR CHEO LOXE DYPC HOLQ OTED YCTA IINS HAII NOKE DYYT EDYA IIIN OTAI INSH EDYO TAIN SHAL SHED YQOK EDYO KSHY RAII NQOK EDYC HEOL | FAIL CLOSED IS A POSTURE NOT A SLOGAN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | voynich_render | voynich_render | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
venona-pad-reuse-021 | ELGL27PEODF6GI7GIB | ELGL27PEODF6GI7GIB | THE BRIDGE IS SECURED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "XMCKL"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
geez-monastic-042 | DMZBOEQMPBCZHKOCTBMPDOHDTEJKTDYMHSQDEVVYSHDPOHESKJMEVPARTMKPMHTK | DMZBOEQMPBCZHKOCTBMPDOHDTEJKTDYMHSQDEVVYSHDPOHESKJMEVPARTMKPMHTK | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "GEEZ"
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
cda-0020503 | YHMMK QWVGL XZEGQ GFVZR RGTPG WMHIH VAWLA GLWVW AKZGE SEVXZ XYIRG JMFAJ FSQAT ZMDRZ QDQCL WRHCM QFZPS TBYEM MZMGJ XTOZW HPWNH ZSPHU JJLJV FGKGF TKQUD BXUCJ ELOCB TXULA UHCVE JLVHK VFHDI VAVDQ BT | YHMMK QWVGL XZEGQ GFVZR RGTPG WMHIH VAWLA GLWVW AKZGE SEVXZ XYIRG JMFAJ FSQAT ZMDRZ QDQCL WRHCM QFZPS TBYEM MZMGJ XTOZW HPWNH ZSPHU JJLJV FGKGF TKQUD BXUCJ ELOCB TXULA UHCVE JLVHK VFHDI VAVDQ BT | FAIL CLOSED IS A POSTURE NOT A SLOGAN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | running_key | running_key | null | {} | hard | en | 162 | 162 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
alberti-disk-v2-0344 | DLBNPRZZJMOJIVNXHQAAXRDZHIIJCEOEMEVCPHFEJKUUAOQNMWTNGVWLAYCVAZFZFLVDGYRJHTEDEK | DLBNPRZZJMOJIVNXHQAAXRDZHIIJCEOEMEVCPHFEJKUUAOQNMWTNGVWLAYCVAZFZFLVDGYRJHTEDEK | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0116 | TEDULUVS | TEDULUVS | DEUS VULT | double_transposition | double_transposition | transposition | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0433 | SKALSBNZCLASERRICRAGWNWQRCPFWSEWWTLAHHANXPOINGNFGLKUDPLASJENIYEZXSNWPIDZNXF | SKALSBNZCLASERRICRAGWNWQRCPFWSEWWTLAHHANXPOINGNFGLKUDPLASJENIYEZXSNWPIDZNXF | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0016493 | 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 11 44 42 11 33 43 35 11 42 15 33 44 44 34 34 31 43 23 34 45 31 14 43 23 34 52 24 44 43 42 15 11 43 34 33 24 33 22 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54... | 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 11 44 42 11 33 43 35 11 42 15 33 44 44 34 34 31 43 23 34 45 31 14 43 23 34 52 24 44 43 42 15 11 43 34 33 24 33 22 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | polybius | polybius | null | {} | hard | en | 122 | 122 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
rail-fence-v2-0168 | TEUHHULRNGAERODSUGCTVIMOEOFEDORSUONROHREEETTSVH | TEUHHULRNGAERODSUGCTVIMOEOFEDORSUONROHREEETTSVH | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0011286 | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL BJJBQSLZ | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL BJJBQSLZ | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS HONESTLY | trithemius | trithemius | null | {} | medium | en | 54 | 54 | synthetic_educational | null | null | [] | |
adfgx-v3-0312 | DXGDGGGGFDGGAFAGGAFFFFDDAGAAGFAAGDFXGXGX | DXGDGGGGFDGGAFAGGAFFFFDDAGAAGFAAGDFXGXGX | THE COMPASS POINTS TRUE | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 40 | 40 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0040 | 90 56 49 63 54 38 81 91 | 90 56 49 63 54 38 81 91 | EUREKA | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 16 | 23 | cipher_museum | 2.0 | public | null | null |
bifid-208 | KPAHHLWVEEAWBRWGHMTBURNENVLTNFUYBAVCGBCHZDGOREDR | KPAHHLWVEEAWBRWGHMTBURNENVLTNFUYBAVCGBCHZDGOREDR | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0527 | LOOSSEPLIIHPSSKSNI | LOOSSEPLIIHPSSKSNI | LOOSE LIPS SINK SHIPS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0361 | CGZSTATHMZHYJSBSZYICRADTWLVJWYKEOKFYNFPKFUJUOUWMKDMUYOPYVBAVZHOEAGUCIYRRAJJCTBGXXBRRWYHURFOJMGVOAPOFQUIZUHGLHBITDMZPHINBXQIYRSDPWERJYKYVWMYVPCFNDXFPWUWCMDWXQFSLWCHY | CGZSTATHMZHYJSBSZYICRADTWLVJWYKEOKFYNFPKFUJUOUWMKDMUYOPYVBAVZHOEAGUCIYRRAJJCTBGXXBRRWYHURFOJMGVOAPOFQUIZUHGLHBITDMZPHINBXQIYRSDPWERJYKYVWMYVPCFNDXFPWUWCMDWXQFSLWCHY | WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0125 | YODYMVIXYHALBBQDFZHQRQAFVM | YODYMVIXYHALBBQDFZHQRQAFVM | THE PRINTING PRESS CHANGES ALL | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0124 | OENDUFNYYPFD | OENDUFNYYPFD | GOLD FROM LEAD | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
vic-v3-0070 | 9108021938018185186809583909108089119118142280938325929183918390910802193801818211791049185193809091080318927 | 9108021938018185186809583909108089119118142280938325929183918390910802193801818211791049185193809091080318927 | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 109 | 109 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-la-040 | PESSDAAAERTRARPA | PESSDAAAERTRARPA | PER ASPERA AD ASTRA | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | la | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0006179 | NANS SVAR PVCU RENC CYVR FNYV ARNE SHAP GVBA GBRN PUYR GGRE | NANS SVAR PVCU RENC CYVR FNYV ARNE SHAP GVBA GBRN PUYR GGRE | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
fractionated-morse-v2-0560 | SFVWMLGKXIPSCNTWMCTPEWNPSEGJWQVLMNCAJPNQPETWMGLAGSJMWRTEAJRTXFNLTWEEURLASENPS | SFVWMLGKXIPSCNTWMCTPEWNPSEGJWQVLMNCAJPNQPETWMGLAGSJMWRTEAJRTXFNLTWEEURLASENPS | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0082 | IFNJKTDSDLPSLBCDHWTVOVWOHTTOJDLEDVJOFFJBJDLOQPTLLPSLNFFWOCTDTLLKSWQFNCTJCWOPSVLLOFFJOPUADJDUHOTFCSSD | IFNJKTDSDLPSLBCDHWTVOVWOHTTOJDLEDVJOFFJBJDLOQPTLLPSLNFFWOCTDTLLKSWQFNCTJCWOPSVLLOFFJOPUADJDUHOTFCSSD | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 100 | 100 | cipher_museum | 2.0 | public | null | null |
cda-0013744 | ┐· ┘· └ ⌒· ¬ Γ· X· X L ─ r ┘· Γ L Γ └ L K K L ┌· X ⌐ X ┐· ⌐ Γ· ┌· X ┘· ⌐· ─ X· ┌ ¬ L ┌· X ⌐· ┌· ┘· ┌ ┘· ─ L K ┘· ⌐· Γ· K· L K ⌒ ┘· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X Γ Γ· ¬· ┌· ⌐ ┐· r· X ⌒ Γ· K r· K ⌒ ┘· ┐· ┘· └ ⌒· ¬ Γ· X· X ⌐ └ ┐· r· ⌐ ¬ L K X | ┐· ┘· └ ⌒· ¬ Γ· X· X L ─ r ┘· Γ L Γ └ L K K L ┌· X ⌐ X ┐· ⌐ Γ· ┌· X ┘· ⌐· ─ X· ┌ ¬ L ┌· X ⌐· ┌· ┘· ┌ ┘· ─ L K ┘· ⌐· Γ· K· L K ⌒ ┘· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X Γ Γ· ¬· ┌· ⌐ ┐· r· X ⌒ Γ· K r· K ⌒ ┘· ┐· ┘· └ ⌒· ¬ Γ· X· X ⌐ └ ┐· r· ⌐ ¬ L K X | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | pigpen | pigpen | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0017515 | ASTR ONGC LXIM NEED SSTX ONGE VIDE NXEE ZEE | ASTR ONGC LXIM NEED SSTX ONGE VIDE NXEE ZEE | A STRONG CLAIM NEEDS STRONG EVIDENCE | commercial_code | commercial_code | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
beaufort-015 | RZNCIMAONSEIFSW | RZNCIMAONSEIFSW | OPERATION BEGINS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "FORTIFICATION"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
affine-v3-1270 | JCEJ YCR BCFF RK BEFCI | JCEJ YCR BCFF RK BEFCI | DEAD MEN TELL NO TALES | affine | affine | substitution | {
"a": 19,
"b": 4
} | beginner | en | 18 | 22 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0307 | 21235 21242 21247 21259 21249 21230 21248 21249 21242 21244 21232 21239 21242 21248 21256 21233 21242 21231 21233 21248 21233 21235 21243 21255 21242 21242 21239 21248 21238 21239 21242 21243 21235 21244 21235 21240 21240 21249 21247 21235 21244 21244 21249 21258 21237 21249 21255 21242 21244 21232 21249 21255 21243 21... | 21235 21242 21247 21259 21249 21230 21248 21249 21242 21244 21232 21239 21242 21248 21256 21233 21242 21231 21233 21248 21233 21235 21243 21255 21242 21242 21239 21248 21238 21239 21242 21243 21235 21244 21235 21240 21240 21249 21247 21235 21244 21244 21249 21258 21237 21249 21255 21242 21244 21232 21249 21255 21243 21... | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 375 | 449 | cipher_museum | 2.0 | public | null | null |
cda-0013828 | THAN-ZIE / LIN / DZEH / DIBEH-YAZZIE / TKIN / SHUSH / GAH / WOL-LA-CHEE / GAH / TSAH-AS-ZIH / CLA-GI-AIH / GAH / DZEH / DIBEH / DZEH / GAH / A-KEH-DI-GLINI / DZEH / DIBEH / KLIZZIE / TSAH / A-KHA / GLOE-IH / DIBEH-YAZZIE / D... | THAN-ZIE / LIN / DZEH / DIBEH-YAZZIE / TKIN / SHUSH / GAH / WOL-LA-CHEE / GAH / TSAH-AS-ZIH / CLA-GI-AIH / GAH / DZEH / DIBEH / DZEH / GAH / A-KEH-DI-GLINI / DZEH / DIBEH / KLIZZIE / TSAH / A-KHA / GLOE-IH / DIBEH-YAZZIE / D... | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | navajo_code | navajo_code | null | {} | hard | en | 213 | 213 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
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