Symmetric Encryption
Key Length for symmetric is 56-256 bits
DES
Data Encryption Standard
56 bit key encryption (16 cycles of 48 bit subkeys)
3DES
Triple DES 168 bit key encryption (48 cycles)
AES
Advanced Encryption Standard A block of cipher uses a 128 bit block size and a 128-, 129, or 256 bit key size.
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