Glossary - 2
PLT-01067, Version: A.7 July 2017
TDES
Triple Data Encryption Standard
Triple DES is the common name for the Triple Data Encryption Algorithm (TDEA or Triple DEA) block
cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to each data
block.
The original DES cipher's key size of 56 bits was generally sufficient when that algorithm was designed,
but the availability of increasing computational power made brute-force attacks feasible. Triple DES
provides a relatively simple method of increasing the key size of DES to protect against such attacks,
without the need to design a completely new block cipher algorithm.
Top up
An amount of credentials, credits, keys, etc., loaded on the encoder to raise or maintain a
desired/required level.
UI
User Interface
UID
Unique Identification Number
Term Description
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