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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
confederate-vigenere-v2-0122 | FIZGZEJXFRPCUKSHJXREALBPNIJHFVKTUGPVHTVVZTFCUHWOIIKOAGPWOKMKUNTCISGDMKEEROZXGFIKTAGVOIQHYESHNXLEDPEPEAAFDMDEECIALUIISGYEDUYANIFXVRFIBPMYDESWROBNPWZGIJE | FIZGZEJXFRPCUKSHJXREALBPNIJHFVKTUGPVHTVVZTFCUHWOIIKOAGPWOKMKUNTCISGDMKEEROZXGFIKTAGVOIQHYESHNXLEDPEPEAAFDMDEECIALUIISGYEDUYANIFXVRFIBPMYDESWROBNPWZGIJE | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
cda-0006657 | UVYY PVCURE HFRF YVARNE NYTROEN GB RAPELCG OYBPXF BS YRGGREF GUR NEPUVGRPGHER FUBHYQ ZNXR ZVFHFR UNEQRE | UVYY PVCURE HFRF YVARNE NYTROEN GB RAPELCG OYBPXF BS YRGGREF GUR NEPUVGRPGHER FUBHYQ ZNXR ZVFHFR UNEQRE | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0005227 | HUR RRGSQGVIR FFIRVSF COHGREAF PSSBER ZOYVAU PYOWZF OA OTNVAS PWBVNE OCCZWNF O YWNSOE THAQHVBA GB SOQU YRGFSE CSRE DSIVSJ ONR ERCEBRIQVPVYWHL ZOGGSF VA ERFSOEPV GEOBFCBFWFWBA QVCVSEF ERODFOAUR YSHGREF JWHUBHG FGPFGWGHFWBA | HUR RRGSQGVIR FFIRVSF COHGREAF PSSBER ZOYVAU PYOWZF OA OTNVAS PWBVNE OCCZWNF O YWNSOE THAQHVBA GB SOQU YRGFSE CSRE DSIVSJ ONR ERCEBRIQVPVYWHL ZOGGSF VA ERFSOEPV GEOBFCBFWFWBA QVCVSEF ERODFOAUR YSHGREF JWHUBHG FGPFGWGHFWBA | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | porta | porta | null | {
"key": "LIBRARY"
} | hard | en | 192 | 192 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0009006 | NZZGT FETRN WRFKN AGKQG EPIVQ UTAGL GNTIF HOVHZ RPCYZ PVQOF BLKBL RZWIG BKROM DWHTI EPELN VVXCI JNIEH PHYMX EKZXB AHELJ AKIDU DVJKR XNRNS AWZKH UTUHZ IIYBC QAIKM JEZWG AXTTC WEITZ EIKJI JLEUL OMFET KTIIT MNAHS IXQML PKMSC G | NZZGT FETRN WRFKN AGKQG EPIVQ UTAGL GNTIF HOVHZ RPCYZ PVQOF BLKBL RZWIG BKROM DWHTI EPELN VVXCI JNIEH PHYMX EKZXB AHELJ AKIDU DVJKR XNRNS AWZKH UTUHZ IIYBC QAIKM JEZWG AXTTC WEITZ EIKJI JLEUL OMFET KTIIT MNAHS IXQML PKMSC G | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | autokey | autokey | null | {
"primer": "LIBRARY"
} | hard | en | 186 | 186 | synthetic_educational | null | null | [] | |
cda-0021268 | 859 822 813 999 833 826 804 852 800 852 872 999 847 853 812 855 813 853 864 814 855 999 832 841 843 868 834 814 810 818 813 999 817 842 851 999 858 822 812 999 806 843 837 837 862 840 825 859 872 999 842 845 813 840 999 855 844 860 852 806 813 999 859 844 843 835 854 999 801 834 834 843 866 999 825 840 810 812 847 814 ... | 859 822 813 999 833 826 804 852 800 852 872 999 847 853 812 855 813 853 864 814 855 999 832 841 843 868 834 814 810 818 813 999 817 842 851 999 858 822 812 999 806 843 837 837 862 840 825 859 872 999 842 845 813 840 999 855 844 860 852 806 813 999 859 844 843 835 854 999 801 834 834 843 866 999 825 840 810 812 847 814 ... | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | culper_ring | culper_ring | null | {} | hard | en | 204 | 204 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
autokey-246 | TEWIQESRGRPEQNWS | TEWIQESRGRPEQNWS | PROCEED AS PLANNED | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
trifid-v2-0290 | CLRKBATHWILORWBEIM+VOD | CLRKBATHWILORWBEIM+VOD | FLEET ASSEMBLES AT HARBOR | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0017 | VHFYAMFCTUVPMHHCANLR | VHFYAMFCTUVPMHHCANLR | THE KING DEMANDS FEALTY | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0006999 | NEVSQZOB NFGVZOHNQ XRL ZSATGU TDCZ FGNGWGGVQF | NEVSQZOB NFGVZOHNQ XRL ZSATGU TDCZ FGNGWGGVQF | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | porta | porta | null | {
"key": "LIBRARY"
} | medium | en | 40 | 40 | synthetic_educational | null | null | [] | |
wallis-cipher-v2-0209 | 90 15 44 63 91 90 88 55 54 75 76 91 90 85 61 91 90 30 84 12 63 20 45 89 91 90 54 53 91 90 76 15 63 55 81 18 77 91 90 37 84 82 54 30 47 66 73 76 91 90 18 81 41 91 90 45 58 63 91 90 67 84 77 30 91 90 15 25 91 161 90 54 45 91 90 47 11 18 84 66 40 15 91 90 47 77 30 91 90 35 85 76 53 91 90 18 81 33 91 90 45 44 20 63 47 15 4... | 90 15 44 63 91 90 88 55 54 75 76 91 90 85 61 91 90 30 84 12 63 20 45 89 91 90 54 53 91 90 76 15 63 55 81 18 77 91 90 37 84 82 54 30 47 66 73 76 91 90 18 81 41 91 90 45 58 63 91 90 67 84 77 30 91 90 15 25 91 161 90 54 45 91 90 47 11 18 84 66 40 15 91 90 47 77 30 91 90 35 85 76 53 91 90 18 81 33 91 90 45 44 20 63 47 15 4... | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 217 | 324 | cipher_museum | 2.0 | public | null | null |
bifid-149 | DVMKBRYPNMUMQMIORIKSTWEEPETOTBOQTVNDGYCHTR | DVMKBRYPNMUMQMIORIKSTWEEPETOTBOQTVNDGYCHTR | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
voynich-render-v3-0075 | gcd tizqrdu is o gcizxore lkfdx adhkrx jkgc o xkrhfd xgdn ox foi gwz jqigd firh ohi kr yckro | gcd tizqrdu is o gcizxore lkfdx adhkrx jkgc o xkrhfd xgdn ox foi gwz jqigd firh ohi kr yckro | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 74 | 92 | cipher_museum | 2.0 | public | null | null |
cda-0015059 | 11 50 25 80 68 65 36 68 29 11 66 80 50 25 80 68 65 36 76 80 82 72 59 82 29 52 50 82 61 82 73 65 69 61 82 61 50 77 65 57 82 52 50 65 36 82 80 61 11 50 76 76 50 82 68 29 11 36 82 57 57 77 68 29 50 29 66 80 69 11 59 52 82 11 65 59 20 57 50 52 55 82 43 52 80 43 65 66 69 25 80 68 65 36 43 50 29 29 50 29 82 66 82 82 29 61 82... | 11 50 25 80 68 65 36 68 29 11 66 80 50 25 80 68 65 36 76 80 82 72 59 82 29 52 50 82 61 82 73 65 69 61 82 61 50 77 65 57 82 52 50 65 36 82 80 61 11 50 76 76 50 82 68 29 11 36 82 57 57 77 68 29 50 29 66 80 69 11 59 52 82 11 65 59 20 57 50 52 55 82 43 52 80 43 65 66 69 25 80 68 65 36 43 50 29 29 50 29 82 66 82 82 29 61 82... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | wallis_cipher | wallis_cipher | null | {} | hard | en | 115 | 115 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
double-transposition-v2-0092 | STRRGTSTYSEFEOXNSEPMONOTSTTIEETIHOIHYEOCEEHCRIGUTIILYNOEMAHOTCNOMOBUFNAICTINAD | STRRGTSTYSEFEOXNSEPMONOTSTTIEETIHOIHYEOCEEHCRIGUTIILYNOEMAHOTCNOMOBUFNAICTINAD | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0009591 | A NQGIQ IHV LVLEFWUO GSMNZNKQ AUU KW GFT HTBY MQ JFDDX | A NQGIQ IHV LVLEFWUO GSMNZNKQ AUU KW GFT HTBY MQ JFDDX | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | trithemius | trithemius | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [] | |
great-cipher-057 | 155 177 139 164 129 168 112 108 169 103 140 171 111 149 119 113 166 167 132 109 115 164 152 110 149 167 147 178 175 149 144 100 100 110 171 112 108 152 169 103 157 168 147 112 153 107 164 154 152 135 148 108 132 119 161 159 113 182 152 147 125 159 175 152 100 130 149 178 132 119 180 140 147 121 114 140 164 167 179 169 ... | 155 177 139 164 129 168 112 108 169 103 140 171 111 149 119 113 166 167 132 109 115 164 152 110 149 167 147 178 175 149 144 100 100 110 171 112 108 152 169 103 157 168 147 112 153 107 164 154 152 135 148 108 132 119 161 159 113 182 152 147 125 159 175 152 100 130 149 178 132 119 180 140 147 121 114 140 164 167 179 169 ... | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "LOUIS"
} | expert | en | 321 | 427 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-v3-0018 | 461209251676834251957264 | 461209251676834251957264 | TREACHERY IN THE COURT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0016138 | AAAA ABAA BAAA AABA AAAA BAAA BAAB BBAA BAAA BBAA AAAB AABB ABAA ABBA ABAA BAAA BAAA ABBA BBAB AAAA AABA ABAA BBAA BAAB AAAA BAAA BABA AAAB BAAA ABBA BAAB AAAB BBAA BAAA AAAA ABAB AABB BAAA BBBA AAAA AAAA BAAB AABA ABAB AAAB BAAB BAAA ABBA AABB AABA ABAA ABAA BABA ABBB AABA ABAA AABB ABAB BAAA AABA ABAA AABB BAAA BBBA ... | AAAA ABAA BAAA AABA AAAA BAAA BAAB BBAA BAAA BBAA AAAB AABB ABAA ABBA ABAA BAAA BAAA ABBA BBAB AAAA AABA ABAA BBAA BAAB AAAA BAAA BABA AAAB BAAA ABBA BAAB AAAB BBAA BAAA AAAA ABAB AABB BAAA BBBA AAAA AAAA BAAB AABA ABAB AAAB BAAB BAAA ABBA AABB AABA ABAA ABAA BABA ABBB AABA ABAA AABB ABAB BAAA AABA ABAA AABB BAAA BBBA ... | ATBASH ENCODES BY REVERSING THE ALPHABET SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | bacon_cipher | bacon_cipher | null | {} | hard | en | 425 | 425 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
alberti-disk-v2-0648 | HFHLEZTWMLYIB | HFHLEZTWMLYIB | AWAIT MY SIGNAL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0112 | I3 M4 D5 K7 N9 C0 A4 G4 F0 O7 N9 V8 D4 P5 P0 M9 | I3 M4 D5 K7 N9 C0 A4 G4 F0 O7 N9 V8 D4 P5 P0 M9 | THE SENATE DECREES | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0030 | HWCQYVAADUHDJZCRUFX | HWCQYVAADUHDJZCRUFX | WISDOM GUARDS THE GATE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0303 | ZJJQCXRSTSDZZFKBLWFBWTPVXDMPUSYZSGOMQNTRPQKENOIUDCUYWCRCNCWVHXNPHJFZJJDCETVASNV | ZJJQCXRSTSDZZFKBLWFBWTPVXDMPUSYZSGOMQNTRPQKENOIUDCUYWCRCNCWVHXNPHJFZJJDCETVASNV | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0014933 | 6352 02521 01618 04159 01607 05987 06010 0382 02235 01573 07310 0404 05993 2527 2835 01295 01262 1614 4422 00661 06626 6358 4449 4763 6361 6025 01593 0943 6618 5665 1661 | 6352 02521 01618 04159 01607 05987 06010 0382 02235 01573 07310 0404 05993 2527 2835 01295 01262 1614 4422 00661 06626 6358 4449 4763 6361 6025 01593 0943 6618 5665 1661 | THE MESSAGE WAS HIDDEN BUT NOT SECURE | zimmermann | zimmermann | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
playfair-es-036 | NEIKAQPTNUAEAIQTRBARUGTHNEUHTEGSWMFRZGNMIPSZGZTEDS | NEIKAQPTNUAEAIQTRBARUGTHNEUHTEGSWMFRZGNMIPSZGZTEDS | LA HISTORIA ES UN PROFETA CON LA MIRADA VUELTA HACIA ATRAS | playfair | playfair | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | es | 50 | 50 | cipher_museum | 0.2 | public | null | null |
cda-0018701 | 16.5.4 9.4.10 5.2.9 4.6.4 7.5.1 13.2.10 17.5.8 13.2.4 1.3.9 3.5.5 3.1.7 10.6.9 9.2.6 18.3.6 17.2.3 18.6.8 2.4.6 19.4.10 8.5.6 5.4.8 10.1.3 5.1.10 13.3.5 17.4.6 20.5.8 8.1.6 16.2.7 7.6.3 17.4.5 3.3.6 7.5.1 15.4.10 4.2.4 17.4.2 11.1.3 15.3.5 10.2.6 10.5.2 1.2.10 17.4.10 2.4.9 9.3.6 19.5.8 2.5.3 8.2.9 16.4.3 9.5.6 9.1.9 1... | 16.5.4 9.4.10 5.2.9 4.6.4 7.5.1 13.2.10 17.5.8 13.2.4 1.3.9 3.5.5 3.1.7 10.6.9 9.2.6 18.3.6 17.2.3 18.6.8 2.4.6 19.4.10 8.5.6 5.4.8 10.1.3 5.1.10 13.3.5 17.4.6 20.5.8 8.1.6 16.2.7 7.6.3 17.4.5 3.3.6 7.5.1 15.4.10 4.2.4 17.4.2 11.1.3 15.3.5 10.2.6 10.5.2 1.2.10 17.4.10 2.4.9 9.3.6 19.5.8 2.5.3 8.2.9 16.4.3 9.5.6 9.1.9 1... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | arnold_andre | arnold_andre | null | {} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0017763 | 13.11.3 12.20.4 20.44.13 11.39.3 15.22.2 12.39.11 1.46.8 19.10.7 7.44.10 8.14.15 6.34.11 15.21.10 16.1.13 19.33.10 4.40.15 13.7.14 20.1.12 6.5.5 1.4.5 6.10.12 2.19.14 15.30.9 4.40.4 20.28.6 1.43.4 20.31.8 8.42.11 8.43.10 14.5.13 4.40.6 17.1.4 12.18.6 20.45.15 15.37.6 4.32.12 2.33.8 5.42.9 16.45.9 4.23.13 17.36.10 4.2.7... | 13.11.3 12.20.4 20.44.13 11.39.3 15.22.2 12.39.11 1.46.8 19.10.7 7.44.10 8.14.15 6.34.11 15.21.10 16.1.13 19.33.10 4.40.15 13.7.14 20.1.12 6.5.5 1.4.5 6.10.12 2.19.14 15.30.9 4.40.4 20.28.6 1.43.4 20.31.8 8.42.11 8.43.10 14.5.13 4.40.6 17.1.4 12.18.6 20.45.15 15.37.6 4.32.12 2.33.8 5.42.9 16.45.9 4.23.13 17.36.10 4.2.7... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | book_cipher | book_cipher | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
solitaire-v2-0367 | TRSMJWTELMSSZBJWXSLWUSWFWCHUQWWQEUVGVEZIGKGFRZTEJJZZWMLIXWCCXMUBAMRNLBLJMHNRWQEXMMRWVRPDRDJCBEUZVCOOSZOQUIOZDLCUVBHHZXEKYQKNWLPZORFYDNUKOEOSVLZUMNVUYSMJRKZTCKWJX | TRSMJWTELMSSZBJWXSLWUSWFWCHUQWWQEUVGVEZIGKGFRZTEJJZZWMLIXWCCXMUBAMRNLBLJMHNRWQEXMMRWVRPDRDJCBEUZVCOOSZOQUIOZDLCUVBHHZXEKYQKNWLPZORFYDNUKOEOSVLZUMNVUYSMJRKZTCKWJX | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0069 | OTYQMNQTYQHTEIIOPHPIIBNTFNUSGSCESGLUAIPHKSETSGCPGMNBTRHTIOLICUTFNRHTDSIESGSX | OTYQMNQTYQHTEIIOPHPIIBNTFNUSGSCESGLUAIPHKSETSGCPGMNBTRHTIOLICUTFNRHTDSIESGSX | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
vic-079 | 90348318682189804680 | 90348318682189804680 | THE KING IS DEAD | vic | vic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
typex-v3-0073 | NRQTUQKNHQUXFAQXMZSCSQKQBOMCVSYPYVZUDWAFGMFTVOTNOJFAQXOIYXXDEVZDVJYYJBVKCQFNVA | NRQTUQKNHQUXFAQXMZSCSQKQBOMCVSYPYVZUDWAFGMFTVOTNOJFAQXOIYXXDEVZDVJYYJBVKCQFNVA | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0019022 | THAN-ZIE / LIN / DZEH / MA-E / GAH / TKIN / DZEH / BE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / THAN-ZIE / DZEH / DIBEH / THAN-ZIE / NO-DA-IH / DIBEH / DZEH / DIBEH / THAN-ZIE / LIN / DZEH / TKIN / TSAH / BE / DZEH / AL-... | THAN-ZIE / LIN / DZEH / MA-E / GAH / TKIN / DZEH / BE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / THAN-ZIE / DZEH / DIBEH / THAN-ZIE / NO-DA-IH / DIBEH / DZEH / DIBEH / THAN-ZIE / LIN / DZEH / TKIN / TSAH / BE / DZEH / AL-... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | navajo_code | navajo_code | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
confederate-vigenere-v2-0350 | OIIQFHZQMKXQAIRWTBXIXXIMZHZPCRDDBVMUUBQPOMRZIWXICWMCPBISWRZXRCPTIVPLUQHAIQFUMP | OIIQFHZQMKXQAIRWTBXIXXIMZHZPCRDDBVMUUBQPOMRZIWXICWMCPBISWRZXRCPTIVPLUQHAIQFUMP | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0012203 | KIUCJ FSDTO HTMBS NGPYA WPJAM ZLCJR OFZBB PARSH GPMPY MGOCK WZEMI ETNLI ZXMJF OQUDM NCKHL LSHWG ODVJB AJULL WJTYE LNUCC ZYZAB HPYUB YMATE HCLWR JQNGJ UCOID KWSCS PVDUE DWSXL TXDHS YNIVS BXCXR ECIMV QQAUI IVUIC AKZQW ODEBR AGXCH RCIUC LCHTB JESTT KHUTW KTEFN | KIUCJ FSDTO HTMBS NGPYA WPJAM ZLCJR OFZBB PARSH GPMPY MGOCK WZEMI ETNLI ZXMJF OQUDM NCKHL LSHWG ODVJB AJULL WJTYE LNUCC ZYZAB HPYUB YMATE HCLWR JQNGJ UCOID KWSCS PVDUE DWSXL TXDHS YNIVS BXCXR ECIMV QQAUI IVUIC AKZQW ODEBR AGXCH RCIUC LCHTB JESTT KHUTW KTEFN | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | vernam | vernam | null | {} | hard | en | 215 | 215 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0002767 | PUDTP FROIY SSPSR SPPIE MLAIO SEEAN SNVTA EATYS OHCRU EBFLE DRIUF EEARD ROPAL ACSLA ETYNL SRMRT ALOBT ETGYB IUTLT SBCEA SBOOS EDYAN MEAEP SIPSX IOTSO EMFCI USNCE SLTHE PHHX | PUDTP FROIY SSPSR SPPIE MLAIO SEEAN SNVTA EATYS OHCRU EBFLE DRIUF EEARD ROPAL ACSLA ETYNL SRMRT ALOBT ETGYB IUTLT SBCEA SBOOS EDYAN MEAEP SIPSX IOTSO EMFCI USNCE SLTHE PHHX | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | scytale | scytale | null | {
"cols": 6
} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
chinese-telegraph-v2-0368 | 5563 4614 4427 4871 5060 5397 4361 4680 5488 4934 5963 5488 4614 4427 5166 4614 4427 5397 4361 4680 5488 4614 4154 4871 4871 4998 5060 5563 5814 4154 4998 5563 4614 4427 4934 4154 4809 4427 5563 4614 4934 4427 5563 5060 4871 4680 4427 4361 5060 5814 4998 4680 4998 4550 5397 4427 4427 4998 5166 4154 5488 5563 5645 5397 ... | 5563 4614 4427 4871 5060 5397 4361 4680 5488 4934 5963 5488 4614 4427 5166 4614 4427 5397 4361 4680 5488 4614 4154 4871 4871 4998 5060 5563 5814 4154 4998 5563 4614 4427 4934 4154 4809 4427 5563 4614 4934 4427 5563 5060 4871 4680 4427 4361 5060 5814 4998 4680 4998 4550 5397 4427 4427 4998 5166 4154 5488 5563 5645 5397 ... | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 656 | 819 | cipher_museum | 2.0 | public | null | null |
typex-v3-0269 | TGMBYVUAJRTGUIKRNNDNSBISUWZOCYHNVZOGOEKNAQVUWIKYDTYHMBKYWCWRJKGXJEAWAVDZRWUZ | TGMBYVUAJRTGUIKRNNDNSBISUWZOCYHNVZOGOEKNAQVUWIKYDTYHMBKYWCWRJKGXJEAWAVDZRWUZ | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0108 | I3 M4 D5 G3 N9 Q3 C6 L8 O4 F6 F6 E1 D6 F7 N3 D4 D5 D6 N3 X3 | I3 M4 D5 G3 N9 Q3 C6 L8 O4 F6 F6 E1 D6 F7 N3 D4 D5 D6 N3 X3 | THE LEGIONS STAND READY | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 40 | 59 | cipher_museum | 2.0 | public | null | null |
cda-0011315 | ZBQREA RAPELCGVBA VF ABG OEBXRA OL YRGGRE SERDHRAPL | ZBQREA RAPELCGVBA VF ABG OEBXRA OL YRGGRE SERDHRAPL | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 44 | 44 | synthetic_educational | null | null | [] | |
confederate-vigenere-v3-0146 | UWVKMGUGFB | UWVKMGUGFB | DOT DASH DOT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0350 | UTTOLLFOILRIFPTTCTALGNNHYIHIETYTOGTNGOSLTUNQOLCOETYIYYIECPLFPAIIETQQLYEPNTDTGQVTIILRGLNICESSYSRDXSAEVSWEIDFWLCTVPEUHEEVHRSVYVTWXOENRFSFPBDOLDVIBSQPITASFYLDILXHZEQSS | UTTOLLFOILRIFPTTCTALGNNHYIHIETYTOGTNGOSLTUNQOLCOETYIYYIECPLFPAIIETQQLYEPNTDTGQVTIILRGLNICESSYSRDXSAEVSWEIDFWLCTVPEUHEEVHRSVYVTWXOENRFSFPBDOLDVIBSQPITASFYLDILXHZEQSS | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
cda-0009055 | CNGG REAJ BEQF URYC OERN XZBA BNYC UNOR GVPF HOFG VGHG VBAG URYV OENE LCER FREI RFXA BJYR QTRS BEGU RPBZ ZHAV GLGU RQRG RPGV IRFG HQVR FCNG GREA FORS BERZ NXVA TPYN VZF | CNGG REAJ BEQF URYC OERN XZBA BNYC UNOR GVPF HOFG VGHG VBAG URYV OENE LCER FREI RFXA BJYR QTRS BEGU RPBZ ZHAV GLGU RQRG RPGV IRFG HQVR FCNG GREA FORS BERZ NXVA TPYN VZF | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 135 | 135 | synthetic_educational | null | null | [] | |
alberti-disk-v3-0776 | QRBBCLAFAXQOXGEDNQNPTHLBUFZJBSFDGBDTLUHTWIJXCFKDHZULUJMFGMTZKARVNWSJEVLBBVLGBHHYJSNTIGN | QRBBCLAFAXQOXGEDNQNPTHLBUFZJBSFDGBDTLUHTWIJXCFKDHZULUJMFGMTZKARVNWSJEVLBBVLGBHHYJSNTIGN | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
tap-code-v3-0025 | . .... ... .... ... ... .... .... .. . .. .... .... .. . ..... .... .... .. .... ... . ... . ..... .... ... .... .... ..... .... ... . ..... . ..... .... .... .. ... . ..... ..... .. .. ... .. .... .... .... . ..... .... ... | . .... ... .... ... ... .... .... .. . .. .... .... .. . ..... .... .... .. .... ... . ... . ..... .... ... .... .... ..... .... ... . ..... . ..... .... .... .. ... . ..... ..... .. .. ... .. .... .... .... . ..... .... ... | DONT FIRE TILL YOU SEE THE WHITES | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 171 | 276 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0137 | YDEMXLIBMTTTHLAUCYQHDJOTNUTFSYGNUCZYOFHXGZCRPALPCPZYUNMTAYLLHDOCKJGCHPTQB | YDEMXLIBMTTTHLAUCYQHDJOTNUTFSYGNUCZYOFHXGZCRPALPCPZYUNMTAYLLHDOCKJGCHPTQB | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
autokey-v3-0366 | YYISQZKMOMBTYCVLAFGECHSJLHVRWWLFWLHWMPUAPGKSMOZWVRSEZCRRZSGAWQUNHTST | YYISQZKMOMBTYCVLAFGECHSJLHVRWWLFWLHWMPUAPGKSMOZWVRSEZCRRZSGAWQUNHTST | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
affine-v2-0635 | UGXGFVS GBXGTUIC | UGXGFVS GBXGTUIC | CAVALRY ADVANCES | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 15 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0021394 | - .... . / -... . ... - / .-.. . ... ... --- -. ... / ... .... --- .-- / .-- .... . .-. . / - .... . / -- . - .... --- -.. / ..-. .- .. .-.. ... | - .... . / -... . ... - / .-.. . ... ... --- -. ... / ... .... --- .-- / .-- .... . .-. . / - .... . / -- . - .... --- -.. / ..-. .- .. .-.. ... | THE BEST LESSONS SHOW WHERE THE METHOD FAILS | morse_code | morse_code | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
hill-v2-0369 | ZMNEKINCRCKCHGADXCQLAEYHBXHGFRKPTLXGVODSPQFEJTJHTLAPRTMWBIXGBMECDSINIKBXJHTLYHRTSKAPECPDQLTLYHRTSKTQEASQDSKZAELHQLTLHGGZKPTLNNCKYHBXNPCQLUBKRDHDCXCQOHHHWQVNZHFRKMLTFILNJWPKDAJDGQMX | ZMNEKINCRCKCHGADXCQLAEYHBXHGFRKPTLXGVODSPQFEJTJHTLAPRTMWBIXGBMECDSINIKBXJHTLYHRTSKAPECPDQLTLYHRTSKTQEASQDSKZAELHQLTLHGGZKPTLNNCKYHBXNPCQLUBKRDHDCXCQOHHHWQVNZHFRKMLTFILNJWPKDAJDGQMX | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 180 | 180 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0320 | OALWWRNTXHHGTVIW | OALWWRNTXHHGTVIW | THE SENATE DECREES | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0007808 | OAICE ONTEO EEELL IYNNW ECNFO DBBSL EMOFE FOLTS SXXSP HYROB IRENE ERECS EDRRK WEAMX XACKH SCUEC BEVV | OAICE ONTEO EEELL IYNNW ECNFO DBBSL EMOFE FOLTS SXXSP HYROB IRENE ERECS EDRRK WEAMX XACKH SCUEC BEVV | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | stager_route | stager_route | null | {
"cols": 6
} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
rail-fence-v2-0537 | ANNUITCOESPIT | ANNUITCOESPIT | ANNUIT COEPTIS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0442 | GGWNUWBOEUHHTWOWFA | GGWNUWBOEUHHTWOWFA | TREASURE BURIED HERE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1543 | RMFLJUZQNLQU | RMFLJUZQNLQU | VENI VIDI VICI | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-066 | EAJLVJAVANPEAFTVVUF | EAJLVJAVANPEAFTVVUF | PROCEED AS PLANNED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 19 | 19 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-438 | BENTIFDNEURGAARR | BENTIFDNEURGAARR | BURN AFTER READING | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CRYPTIC"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0066 | LOFYEJRJPQFKXTEIHOZCWGFVVXUXOEATFATFITJLNLSYZSARPQDNSLOZHVUFXBBWMWUYLWFIAD | LOFYEJRJPQFKXTEIHOZCWGFVVXUXOEATFATFITJLNLSYZSARPQDNSLOZHVUFXBBWMWUYLWFIAD | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ABC"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0044 | EPCTQAGHYFWMXQZZU | EPCTQAGHYFWMXQZZU | THE RAILWAY ARRIVES | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0084 | SQEBMTTWNUGNKRPOHLTMNRHTIASGAOCPFLPICGBCFLQOTYIGBBCRKSFNGQHTKUNLSETNGPYKIBRDEOTDOASX | SQEBMTTWNUGNKRPOHLTMNRHTIASGAOCPFLPICGBCFLQOTYIGBBCRKSFNGQHTKUNLSETNGPYKIBRDEOTDOASX | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1675 | PFZRQ MXQOFYRP PFQ ABRP KLYFP | PFZRQ MXQOFYRP PFQ ABRP KLYFP | SICUT PATRIBUS SIT DEUS NOBIS | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 25 | 29 | cipher_museum | 2.0 | public | null | null |
atbash-la-022 | URZG OFC | URZG OFC | FIAT LUX | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | la | 7 | 8 | cipher_museum | 0.2 | public | null | null |
kl7-v3-0053 | OZJEDXGKZQXEOAELOXHRHFPAZFHQUNJLDVIPHJQVUEXAWWFQDUKAULHFTMCHWXCIOTKGCROJX | OZJEDXGKZQXEOAELOXHRHFPAZFHQUNJLDVIPHJQVUEXAWWFQDUKAULHFTMCHWXCIOTKGCROJX | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
rail-fence-it-032 | ATPAROBIRAORVNIOOOLAICSAADEAOSTINEAAPLLSSNRSRF | ATPAROBIRAORVNIOOOLAICSAADEAOSTINEAAPLLSSNRSRF | AVANTI POPOLO ALLA RISCOSSA BANDIERA ROSSA TRIONFERA | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 3
} | intermediate | it | 46 | 46 | cipher_museum | 0.2 | public | null | null |
cda-0020110 | YWLIM AJFGO QOWEF CVKDK VMAUX WYXCK GWCTI PXBGN CBTDE PIEAB GMIOU WJOKZ PXNZB IZEGJ XUAGS PDNSG JGPEN XEWSA OVSLF YDLPX AFXYZ RYEAH HWMNA YXVDT DYPWJ LZXOY TCOEH OMKMG YXUFA NBIIK IGEKH UOYMQ BDNDK ZYHTZ FOWKO DJDHQ Q | YWLIM AJFGO QOWEF CVKDK VMAUX WYXCK GWCTI PXBGN CBTDE PIEAB GMIOU WJOKZ PXNZB IZEGJ XUAGS PDNSG JGPEN XEWSA OVSLF YDLPX AFXYZ RYEAH HWMNA YXVDT DYPWJ LZXOY TCOEH OMKMG YXUFA NBIIK IGEKH UOYMQ BDNDK ZYHTZ FOWKO DJDHQ Q | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION TOMORROW | one_time_pad | one_time_pad | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cardano-autokey-v3-0039 | FALIBMTVZUQRGVQBSNZDE | FALIBMTVZUQRGVQBSNZDE | THE EXPERIMENT CONFIRMS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0776 | KTVWRQFNDXWDZDGPZKWANM | KTVWRQFNDXWDZDGPZKWANM | EXTRACTION POINT CHANGED | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 16
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0116 | 7401 7467 8685 8528 8781 8685 7911 8603 | 7401 7467 8685 8528 8781 8685 7911 8603 | DEUS VULT | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 32 | 39 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0384 | NFUDBLFNWNDWWPAVLEFXFATBLKXKSIMDAGUFNAGVERXENAENFUDBLFNWNDWBLKVBSEMPPLFNSBSEALKTAGVC | NFUDBLFNWNDWWPAVLEFXFATBLKXKSIMDAGUFNAGVERXENAENFUDBLFNWNDWBLKVBSEMPPLFNSBSEALKTAGVC | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-la-062 | TSRRVBIESIBIOETVALA | TSRRVBIESIBIOETVALA | VERITAS VOS LIBERABIT | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | la | 19 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0016800 | ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA ABBAB BAAAA AAABB BAAAB AABBB AABAA ABABA ABBBA AAAAB BAAAA AABAA AAAAA ABAAB ABABB ABBAB ABBAA ABBAB AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA ABBAB AAAAB BAAAB AABAA BAAAA BAABB AA... | ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA ABBAB BAAAA AAABB BAAAB AABBB AABAA ABABA ABBBA AAAAB BAAAA AABAA AAAAA ABAAB ABABB ABBAB ABBAA ABBAB AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA ABBAB AAAAB BAAAB AABAA BAAAA BAABB AA... | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | bacon_cipher | bacon_cipher | null | {} | hard | en | 660 | 660 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
joseon-yeokhak-v3-0238 | ELILETZYHTESZFECPACPDPYELETZY | ELILETZYHTESZFECPACPDPYELETZY | TAXATION WITHOUT REPRESENTATION | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
nihilist-180 | 35 26 66 44 44 54 45 42 67 56 43 34 43 27 44 36 | 35 26 66 44 44 54 45 42 67 56 43 34 43 27 44 36 | CIPHER KEY CHANGED | nihilist | nihilist | fractionation | {
"polybius": "ENIGMA",
"keyword": "NIHIL"
} | advanced | en | 32 | 47 | cipher_museum | 0.2 | public | null | null |
commercial-code-035 | GABAB ZUZUZ DEZUZ BAZUZ WAZUZ XUZUZ BABAB ZUZUZ QAZUZ SAZUZ WAZUZ BAZUZ PAZUZ XUZUZ HABAB FABAB BABAB ZUZUZ TAZUZ KAZUZ GEZUZ XAZUZ LAZUZ DAZUZ BAZUZ PAZUZ XUZUZ NABAB ZUZUZ ZAZUZ KAZUZ WAZUZ GAZUZ GAZUZ XUZUZ HABAB FABAB ZUZUZ SAZUZ RAZUZ GAZUZ XUZUZ | GABAB ZUZUZ DEZUZ BAZUZ WAZUZ XUZUZ BABAB ZUZUZ QAZUZ SAZUZ WAZUZ BAZUZ PAZUZ XUZUZ HABAB FABAB BABAB ZUZUZ TAZUZ KAZUZ GEZUZ XAZUZ LAZUZ DAZUZ BAZUZ PAZUZ XUZUZ NABAB ZUZUZ ZAZUZ KAZUZ WAZUZ GAZUZ GAZUZ XUZUZ HABAB FABAB ZUZUZ SAZUZ RAZUZ GAZUZ XUZUZ | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 210 | 251 | cipher_museum | 0.2 | public | null | null |
null-cipher-v3-0031 | said on new sentence other for like its before each right than your after said some each mean before look each | said on new sentence other for like its before each right than your after said some each mean before look each | SONS OF LIBERTY ASSEMBLE | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "first"
} | advanced | en | 90 | 110 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0270 | AWAITLMAYNSGI | AWAITLMAYNSGI | AWAIT MY SIGNAL | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0006923 | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | trithemius | trithemius | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [] | |
enigma-v2-0206 | MQBPJCWHFVHDGKWVWNKADSQZINTYLJRACYZSNMVJOUDIMCIEEWLAEFYDBCTIZDMYBJUCQWBBURYIBS | MQBPJCWHFVHDGKWVWNKADSQZINTYLJRACYZSNMVJOUDIMCIEEWLAEFYDBCTIZDMYBJUCQWBBURYIBS | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0017150 | TAKE SHEA DSEI GHTE XTRA NIGH TISS UEGU IDEM AJOR AGAI NMAJ ORAL ERTC AUSE HOUR SINT ELNO RTHE XACT UNIT SSHO REEX ACTD ELAY RAID SORD ERTU RNSO PENS RAID S | TAKE SHEA DSEI GHTE XTRA NIGH TISS UEGU IDEM AJOR AGAI NMAJ ORAL ERTC AUSE HOUR SINT ELNO RTHE XACT UNIT SSHO REEX ACTD ELAY RAID SORD ERTU RNSO PENS RAID S | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE ARCHITECTURE SHOULD MAKE MISUSE HARDER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
bazeries-v3-0080 | JDIRCRCOKQJDJSIDHHTQTVJTBTCQSBOBJDOPTDHTOTLJKHSJKPSQJKVNJSQVJSIRCVORKPQJDPTTDATCNH | JDIRCRCOKQJDJSIDHHTQTVJTBTCQSBOBJDOPTDHTOTLJKHSJKPSQJKVNJSQVJSIRCVORKPQJDPTTDATCNH | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
purple-v2-0211 | SONQKUQQZYNXLWSMEZTZBFCWQTZTGTHRBFQDNYWFCCNWXNNQIRWONUAZTYLFFXLHBAYEZJQFULWMTDJUB | SONQKUQQZYNXLWSMEZTZBFCWQTZTGTHRBFQDNYWFCCNWXNNQIRWONUAZTYLFFXLHBAYEZJQFULWMTDJUB | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0513 | VHZLZIBQUMGZUGUOIEWFPFAIDEYMWSCAWKJQVZTSVJQRYTSPEQDRIEYYNLOHTECJEVRERLFWDTSRJNTCYDFSNAIDHZRJAGLEYWOIBHERLFTCEDVUQRYSHYGEHDCZDKCNYTSVCVHDSORWUHVLWSCKNOHTECJEVRE | VHZLZIBQUMGZUGUOIEWFPFAIDEYMWSCAWKJQVZTSVJQRYTSPEQDRIEYYNLOHTECJEVRERLFWDTSRJNTCYDFSNAIDHZRJAGLEYWOIBHERLFTCEDVUQRYSHYGEHDCZDKCNYTSVCVHDSORWUHVLWSCKNOHTECJEVRE | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
affine-v2-0276 | OEV XJQQL EJUV VJIL | OEV XJQQL EJUV VJIL | THE WALLS HAVE EARS | affine | affine | substitution | {
"a": 3,
"b": 9
} | beginner | en | 16 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0013434 | 1 20 18 1 14 19 16 1 18 5 14 20 20 15 15 12 19 8 15 21 12 4 19 8 15 23 9 20 19 18 5 1 19 15 14 9 14 7 3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 13 14 19 9 14 11 5 25 15 18 4 5 18 | 1 20 18 1 14 19 16 1 18 5 14 20 20 15 15 12 19 8 15 21 12 4 19 8 15 23 9 20 19 18 5 1 19 15 14 9 14 7 3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 13 14 19 9 14 11 5 25 15 18 4 5 18 | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
homophonic-037 | 19 47 10 69 41 26 72 39 80 58 10 71 91 | 19 47 10 69 41 26 72 39 80 58 10 71 91 | CHANGE OF PLANS | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 26 | 38 | cipher_museum | 0.2 | public | null | null |
gronsfeld-087 | VOFBTCWJAUGA | VOFBTCWJAUGA | THE TRAP IS SET | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "27182"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
tap-code-v2-0004 | .... ... .... .... ... .... .... .. ... .. .... .... .. ... . ..... . .. .... .. . ..... . . . ... .. ... | .... ... .... .... ... .... .... .. ... .. .... .... .. ... . ..... . .. .... .. . ..... . . . ... .. ... | STORM THE BREACH | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 78 | 131 | cipher_museum | 2.0 | public | null | null |
affine-v3-1373 | QYN KATUQTUD KANVV XYHUDNV HEE | QYN KATUQTUD KANVV XYHUDNV HEE | THE PRINTING PRESS CHANGES ALL | affine | affine | substitution | {
"a": 21,
"b": 7
} | beginner | en | 26 | 30 | cipher_museum | 2.0 | public | null | null |
rail-fence-005 | TEOSICERHCATSLA | TEOSICERHCATSLA | THE COAST IS CLEAR | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
venona-pad-reuse-v3-0021 | 4HPPTMCTDNEL6EZSADPNNEQEEL | 4HPPTMCTDNEL6EZSADPNNEQEEL | THE PRINTING PRESS CHANGES ALL | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0330 | OAOTWYOIMLTRQOLBEMPNHYQXIEVHLWUAPTTXJNZLTKOAEMZGPMFXYGFSAHCICOFULVEMXGEEUDTPY | OAOTWYOIMLTRQOLBEMPNHYQXIEVHLWUAPTTXJNZLTKOAEMZGPMFXYGFSAHCICOFULVEMXGEEUDTPY | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
purple-v2-0067 | SNKMBCVNZKTPKSFRXZPCMZTOXWMMBNWENATAQYUEFXJGMTSOAPHFBPDBOIMFCZSCELCQKIVOKLJ | SNKMBCVNZKTPKSFRXZPCMZTOXWMMBNWENATAQYUEFXJGMTSOAPHFBPDBOIMFCZSCELCQKIVOKLJ | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
bazeries-162 | XPELRMNPBXCMRQDMYCENPEDRALYEYQDPSEBKJJLDKSRNEKLDPAQNJLYUTNQPYDPQ | XPELRMNPBXCMRQDMYCENPEDRALYEYQDPSEBKJJLDKSRNEKLDPAQNJLYUTNQPYDPQ | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | bazeries | bazeries | transposition | {
"type": "integer",
"value": 99
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
cda-0013696 | 857 822 813 999 826 840 809 813 871 999 844 815 999 806 843 824 840 808 824 811 812 840 808 812 999 824 855 999 802 999 860 855 813 815 860 834 999 807 835 862 814 999 818 843 843 809 999 813 811 861 808 802 858 824 844 840 800 834 999 858 842 844 833 856 999 814 869 847 834 800 825 841 999 858 823 813 826 851 999 835 ... | 857 822 813 999 826 840 809 813 871 999 844 815 999 806 843 824 840 808 824 811 812 840 808 812 999 824 855 999 802 999 860 855 813 815 860 834 999 807 835 862 814 999 818 843 843 809 999 813 811 861 808 802 858 824 844 840 800 834 999 858 842 844 833 856 999 814 869 847 834 800 825 841 999 858 823 813 826 851 999 835 ... | THE INDEX OF COINCIDENCE IS A USEFUL CLUE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | culper_ring | culper_ring | null | {} | hard | en | 116 | 116 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
confederate-vigenere-v3-0320 | LASFIJAEPVXQEIAS | LASFIJAEPVXQEIAS | THE SENATE DECREES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0248 | 11 13 77 28 36 63 | 11 13 77 28 36 63 | EUREKA | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 12 | 17 | cipher_museum | 2.0 | public | null | null |
m94-v2-0240 | JRZNMYUYHQBFMULUC | JRZNMYUYHQBFMULUC | COURAGE IN DARKNESS | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-270 | JOFEFEKQSKH | JOFEFEKQSKH | RALLY AT DAWN | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SOUTHERN"
} | intermediate | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
two-square-v3-0230 | EUTAEF | EUTAEF | EUREKA | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0113 | MMFWYFWDEXVXVBXB | MMFWYFWDEXVXVBXB | RENDER UNTO CAESAR | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0021965 | RMWVC LU XLRMXRWVMXV NVZHFIVH OVGGVI UIVJFVMXB WRHGIRYFGRLM GSV NVHHZTV DZH SRWWVM YFG MLG HVXFIV | RMWVC LU XLRMXRWVMXV NVZHFIVH OVGGVI UIVJFVMXB WRHGIRYFGRLM GSV NVHHZTV DZH SRWWVM YFG MLG HVXFIV | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE MESSAGE WAS HIDDEN BUT NOT SECURE | atbash | atbash | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
copiale-v3-0278 | V2 K2 M1 U1 A2 E3 A1 P5 L0 U1 S9 K8 U2 A7 Q1 W9 H3 Y8 B9 A2 S6 O4 J8 O2 P5 B9 D3 H9 W2 Q1 D8 W4 D8 F9 U0 E3 G4 O4 E6 M8 G2 J8 A1 I5 H0 A3 G3 G0 E0 E1 A6 Q1 D6 O7 W2 U9 U8 S6 F9 Y0 W2 U9 I2 V7 I0 U1 Y8 B8 W2 W6 R7 B8 N1 W5 | V2 K2 M1 U1 A2 E3 A1 P5 L0 U1 S9 K8 U2 A7 Q1 W9 H3 Y8 B9 A2 S6 O4 J8 O2 P5 B9 D3 H9 W2 Q1 D8 W4 D8 F9 U0 E3 G4 O4 E6 M8 G2 J8 A1 I5 H0 A3 G3 G0 E0 E1 A6 Q1 D6 O7 W2 U9 U8 S6 F9 Y0 W2 U9 I2 V7 I0 U1 Y8 B8 W2 W6 R7 B8 N1 W5 | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
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