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In cryptography, format-preserving encryption (FPE), refers to encrypting in such a way that the output (the ciphertext) is in the same format as the input (the plaintext). The meaning of "format" varies. Typically only finite sets of characters are used; numeric, alphabetic or alphanumeric. For example:
Similar to format-preserving encryption, FTE can be used to control the format of ciphertexts. The canonical example is a credit card number, such as 1234567812345670 (16 bytes long, digits only). However, FTE does not enforce that the input format must be the same as the output format.
The example is suggesting, that it is ok to encrypt credit card numbers with format-preserving encryption. In reality, storing them should be avoided completely if possible, otherwise one have to follow the PCI standard. I recommend to look for another example, maybe for obfuscating row ids in an url.
FPE may refer to: Factor price equalization; Fire protection engineer; Flash pulmonary edema; Floating-point exception; Format-preserving encryption; Force Protection Europe, a vehicle manufacturer; Fokker–Planck equation; Free-piston engine; Fuchs Petrolub, a German lubricant manufacturer; Fuel Price Escalator, a British fuel duty
FF3 and FF3-1, format-preserving encryption ciphers. Topics referred to by the same term This disambiguation page lists articles associated with the same title formed as a letter–number combination.
A large number of block ciphers use the scheme, including the US Data Encryption Standard, the Soviet/Russian GOST and the more recent Blowfish and Twofish ciphers. In a Feistel cipher, encryption and decryption are very similar operations, and both consist of iteratively running a function called a "round function" a fixed number of times.
Encryption scrambles and unscrambles your data to keep it protected. • A public key scrambles the data. • A private key unscrambles the data. Credit card security. When you make a purchase on AOL, we'll only finish the transaction if your browser supports SSL.
Format-preserving encryption (FPE), refers to encrypting in such a way that the output (the ciphertext) is in the same format as the input (the plaintext) Blinding is a cryptography technique by which an agent can provide a service to a client in an encoded form without knowing either the real input or the real output.
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