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pure Python format preserving encryption

Project description


pyffx is a pure Python implementation of Format-preserving, Feistel-based encryption (FFX).

Only method 2 is implemented.

See also libffx


>>> import pyffx
>>> e = pyffx.Integer(b'secret-key', length=4)
>>> e.encrypt(1234)
>>> e.decrypt(6103)
>>> e = pyffx.String(b'secret-key', alphabet='abc', length=6)
>>> e.encrypt('aaabbb')
>>> e.decrypt('acbacc')

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