Substitution Cipher Helper

Automated solving of substitution ciphers using frequency analysis and pattern recognition.

Statistical tool for cipher analysis to determine if text is encrypted and likely cipher type.

Statistical test to determine if text is encrypted and likely cipher type with key length analysis.

Count and analyze letter frequencies in text for cryptogram solving.

Find repeated sequences to determine cipher key length for polyalphabetic ciphers.

Polyalphabetic substitution cipher using a keyword for enhanced encryption.