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IEEE 1619.2-2021

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IEEE Standard for Wide-Block Encryption for Shared Storage Media

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Revision Standard - Active. EME2-AES and XCB-AES wide-block encryption with associated data (EAD) modes of the NIST AES block cipher, providing usage guidelines and test vectors, are described. A wide block encryption algorithm behaves as a single block cipher with a large plaintext input and ciphertext output, but uses a narrow block cipher [in this case Advanced Encryption Standard (AES)] internally. These encryption modes are oriented toward random access storage devices that do not provide authentication, but need to reduce the granularity of a potential attack.
This standard specifies an architecture for encryption of data in random access storage devices, oriented toward applications that benefit from wide encryption-block sizes of 512 bytes and above.
This standard specifies an architecture for media security and enabling components. Wide encryption blocks are well suited to environments where the attacker has repeated access to cryptographic communication or ciphertext, or is able to perform traffic analysis of data access patterns. The standard is oriented toward fixed-size encryption blocks without data expansion, but anticipates an optional data expansion mode to resist attacks involving data tampering.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number 1619.2
Publication Date June 16, 2021
Language en - English
Page Count 88
Revision Level
Supercedes
Committee Cybersecurity and Privacy Standards Committee
Publish Date Document Id Type View
June 16, 2021 1619.2-2021 Revision
March 8, 2011 1619.2-2010 Revision