format-transforming-encryption

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kpdyer / libfte

Format-transforming encryption in Python: encrypt data to match any regex format, with format-preserving (FF1) and authenticated modes.

python cryptography encryption censorship-circumvention fpe format-preserving-encryption fte format-transforming-encryption

Updated Sep 6, 2026
Python

systemslibrarian / crypto-lab-fte

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Browser-based Format-Transforming Encryption demo — regex compiled to a minimal DFA, exact Goldberg-Sipser ranking over the length-n language slice, FF1 with cycle-walking (NIST SP 800-38G), a live regex DPI classifier, and encryption that comes out as a phone number.

cryptography censorship-circumvention steganography regular-expressions dfa covert-channel aes-ctr deep-packet-inspection format-preserving-encryption ff1 crypto-lab format-transforming-encryption nist-sp-800-38g cycle-walking

Updated Sep 2, 2026
TypeScript

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