Visual Decipher Calculators
Each decipher method has a separate reverse page; solver and analysis tools are included where a key may be unknown.
Substitution
Decipher Caesar ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorShift Decipher CalculatorDecipher Shift ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
AnalysisAtbash Cipher CalculatorA dedicated Atbash Cipher tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
Visual calculatorAffine Decipher CalculatorDecipher Affine ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorKeyword Decipher CalculatorDecipher Keyword ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorMonoalphabetic Substitution Decipher CalculatorDecipher Monoalphabetic Substitution ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorHomophonic Substitution Decipher CalculatorDecipher Homophonic Substitution ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Rotation
A dedicated ROT13 Cipher tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisROT47 Cipher CalculatorA dedicated ROT47 Cipher tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
Polyalphabetic
Decipher Vigenère ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorBeaufort Decipher CalculatorDecipher Beaufort ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorVariant Beaufort Decipher CalculatorDecipher Variant Beaufort ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorAutokey Decipher CalculatorDecipher Autokey ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorGronsfeld Decipher CalculatorDecipher Gronsfeld ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorPorta Decipher CalculatorDecipher Porta ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorRunning Key Decipher CalculatorDecipher Running Key ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Number
Fractionation
Decipher Baconian ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorPolybius Square Decipher CalculatorDecipher Polybius Square ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorBifid Decipher CalculatorDecipher Bifid ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorTrifid Decipher CalculatorDecipher Trifid ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorADFGX Decipher CalculatorDecipher ADFGX ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorADFGVX Decipher CalculatorDecipher ADFGVX ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorNihilist Decipher CalculatorDecipher Nihilist ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorStraddling Checkerboard Decipher CalculatorDecipher Straddling Checkerboard ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Polygraphic
Decipher Playfair ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorTwo-Square Decipher CalculatorDecipher Two-Square ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorFour-Square Decipher CalculatorDecipher Four-Square ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Matrix
Decipher Hill Cipher 2×2 ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorHill Cipher 3×3 Decipher CalculatorDecipher Hill Cipher 3×3 ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Transposition
Decipher Rail Fence ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorColumnar Transposition Decipher CalculatorDecipher Columnar Transposition ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorDouble Transposition Decipher CalculatorDecipher Double Transposition ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorMyszkowski Transposition Decipher CalculatorDecipher Myszkowski Transposition ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorRoute Decipher CalculatorDecipher Route ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorScytale Decipher CalculatorDecipher Scytale ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Signal
Symbol
Decipher Pigpen ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorMasonic Decipher CalculatorDecipher Masonic ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Reference
Decipher Book ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorOttendorf Decipher CalculatorDecipher Ottendorf ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Steganographic
Transform
Binary
Decipher XOR ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorVernam Decipher CalculatorDecipher Vernam ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Visual calculatorOne-Time Pad Decipher CalculatorDecipher One-Time Pad ciphertext on a dedicated page with the correct reverse algorithm, method-specific key inputs, visual reconstruction and result checks.
Stream
Block
Public-key
Machine
Deck
Solver
A dedicated Caesar Cipher Brute Force Solver tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisVigenère Cipher SolverA dedicated Vigenère Cipher Solver tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisSubstitution Cipher SolverA dedicated Substitution Cipher Solver tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisInteractive Cryptogram SolverA dedicated Interactive Cryptogram Solver tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisAristocrat Cipher SolverA dedicated Aristocrat Cipher Solver tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisPatristocrat Cipher SolverA dedicated Patristocrat Cipher Solver tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
Analysis
A dedicated Vigenère Key Length tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisCipher Identifier CalculatorA dedicated Cipher Identifier tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisCipher Frequency Analysis CalculatorA dedicated Cipher Frequency Analysis tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisIndex of Coincidence CalculatorA dedicated Index of Coincidence tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisKasiski Examination CalculatorA dedicated Kasiski Examination tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisN-Gram Cipher Analysis CalculatorA dedicated N-Gram Cipher Analysis tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisCiphertext Entropy CalculatorA dedicated Ciphertext Entropy tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisRepeated Sequence Cipher AnalyzerA dedicated Repeated Sequence Cipher Analyzer tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisCipher Letter Pattern CalculatorA dedicated Cipher Letter Pattern tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
Historical
A dedicated Zodiac Cipher Analysis Helper tool with method-specific inputs, validation, cipher/decipher output, and calculation details.
AnalysisBeale Cipher Analysis HelperA dedicated Beale Cipher Analysis Helper tool with method-specific inputs, validation, cipher/decipher output, and calculation details.