Decryption

Reverse of encryption is called decryption. The process of converting encrypted content back into its original form, often the process of converting ciphertext to plaintext.

Deciphering encrypted text can be challenging and time consuming. These programs will reduce some of the hack work allowing you to look for patterns. In most cases there is a form with example text for you to experiment with. Conversely, you can paste your own ciphertext into the form for decryption.

• Caesar shifts - displays all the 26 letter shifts
• Frequency analysis - calculates letter frequencies and other patterns
• Letter substitution - try replacing letters and see the effects
• Affine shift ciphers - letter substitutions follow a mathematical relationship
• Vignère encryption - several coding sequences are used
• Transposition cipher - text is placed in columns and then reordered to encrypt
• ADFGVX cipher - Decrypt a substitution and transposition cipher.
• ADFGVX cipher - Encrypt a substitution and transposition cipher.
• Text test - a simple way of seeing what characters are passed over in a form

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