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DES Modes of Operation
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Topics
Date Published: December 2, 1980
Author(s)
National Bureau of Standards
The Federal Data Encryption Standard (DES) (FIPS 46) specifies a cryptographic algorithm to be used for the cryptographic protection of sensitive, but unclassified, computer data. This FIPS defines four modes of operation for the DES which may be used in a wide variety of applications. The modes specify how data will be encrypted (cryptographically protected) and decrypted (returned to original form). The modes included in this standard are the Electronic Codebook (ECB) mode, the Cipher Block Chaining (CBC) mode, the Cipher Feedback (CFB) mode, and the Output Feedback (OFB) mode.
The Federal Data Encryption Standard (DES) (FIPS 46) specifies a cryptographic algorithm to be used for the cryptographic protection of sensitive, but unclassified, computer data. This FIPS defines four modes of operation for the DES which may be used in a wide variety of applications. The modes...
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The Federal Data Encryption Standard (DES) (FIPS 46) specifies a cryptographic algorithm to be used for the cryptographic protection of sensitive, but unclassified, computer data. This FIPS defines four modes of operation for the DES which may be used in a wide variety of applications. The modes specify how data will be encrypted (cryptographically protected) and decrypted (returned to original form). The modes included in this standard are the Electronic Codebook (ECB) mode, the Cipher Block Chaining (CBC) mode, the Cipher Feedback (CFB) mode, and the Output Feedback (OFB) mode.
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Keywords
cryptography; data security; DES; encryption; Federal Information Processing Standards; computer security; modes of operation
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