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| Data Encryption Standard An encryption algorithm that uses a 56-bit key and maps a 64-bit input block to a 64-bit output block. The key appears to be a 64-bit key, but one bit in each of the eight bytes is used for odd parity, resulting in 56 bits of usable key | algoritmus DES (Data Encryption Standard) |
| Triple Data Encryption Standard An encryption algorithm based on the Data Encryption Standard (DES) | algoritmus 3DES (Triple Data Encryption Standard) |