Triple Data Encryption Standard

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Abbreviation(s) and Synonym(s):

3DES

NIST SP 800-45 Version 2, NIST SP 800-77 Rev. 1

TDES

NIST SP 800-203

Definition(s):

An implementation of the data encryption standard (DES) algorithm that uses three passes of the DES algorithm instead of one as used in ordinary DES applications. Triple DES provides much stronger encryption than ordinary DES but it is less secure than advanced encryption standard (AES). Rationale: The terminology has been changed by NIST.
Source(s):
CNSSI 4009-2015 under triple DES (3DES)

Triple Data Encryption Standard specified in FIPS 46-3
Source(s):
NIST SP 800-20 under TDES

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.