What and Why Use TDES or Triple DES?
Symmetric encryption standard. Using 156-bit keys. It repeats the DES algorithm three times (thrice). Put simply, this is three-times security standard use of DES (FIPS 46-2). It eliminates the use or need for/of a new, switch to, or having an alternative algorithm. It adds the use or introduction of ‘three steps’ DES, levels or groups of protection. Varying the number and order/sequencing of the keys, EEE (DES key variants), middle-step EDE. Largely being replaces by AES or Advanced Encryption Standard, up to six times faster and more secure on modern processors. Best-suited for hardware applications (if/where still used).
Worded slightly differently, it has to do with cryptography and security, where the block cipher is effectively formed from the Data Encryption Standard (DES) cipher, done so by using it three times for added security, protection and decryption integrity of data, system, information, access, restriction and vulnerabilities. This is typically used for protection against hacking and threats from the outside.
Key Exam Points
- Use Triple TDES for C# and VB, hardware applications (or see also AES)
- For the exam study examples for TDES, that help you to gain a better understanding in this topic
- Don't give up.
AES, Advanced Encryption Standard.
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