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To convert encrypted electronic information to plain text.
References in periodicals archive ?
RC6 and Rijndael generally demonstrate above average encryption and decryption speed for 128 bit keys, with RC6 doing particularly well on 32 bit platforms and Rijndael performing more evenly across platforms.
MARS, RC6, and Serpent exhibit consistent encryption and decryption performance for all three key sizes.
Rijndael has very low RAM and ROM requirements and is very well suited to restricted-space environments when either encryption or decryption is implemented.
Serpent has low RAM and ROM requirements and is well suited to restricted-space environments, when either encryption or decryption is implemented.
Therefore, RC6 is not well suited for implementation on devices with a very restricted amount of available RAM when decryption is required.
Twofish, MARS, and RC6 need very little additional area to implement both encryption and decryption in hardware, as opposed to implementing encryption alone.
Rijndael's encryption and decryption are different--more than for Twofish, MARS, and RC6-although Rijndael can be implemented in such a way as to share some hardware resources.
For Serpent, encryption and decryption are different functions that appear to share only very limited hardware resources.
All of the finalists show very little speed variation, if any, between encryption and decryption functions for a given key size.
Serpent also supports on-the-fly subkey computation for both encryption and decryption; however, the decryption process requires one additional computation.
Software Speeds for Encryption, Decryption, and Key Setup
1-15) that present the encryption, decryption, and key setup performance data from various studies of the five AES finalists.