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4.2.2 Symmetric-Key Algorithms used for Encryption and Decryption

NIST platform security: roots of trust, firmware and secure enclaves SP 800-57 Part 1 Rev. 5 against SP 800-57 Part 1 Rev. 4
All changes in this version
removed 4 Cryptographic Algorithms part of 4.2

Title changed

Before · SP 800-57 Part 1 Rev. 4

Symmetric-Key Algorithms used for Encryption and Decryption

After · SP 800-57 Part 1 Rev. 5

Symmetric-Key Algorithms used for Encryption and Decryption

Control changed

Before · SP 800-57 Part 1 Rev. 4

Encryption is used to provide confidentiality for data. The data to be protected is called plaintext when in its original form. Encryption transforms the data into ciphertext. Ciphertext can be transformed back into plaintext using decryption. The approved algorithms for encryption/decryption are symmetric key algorithms: AES and TDEA. Each of these algorithms operates on blocks (chunks) of data during an encryption or decryption operation. For this reason, these algorithms are commonly called block cipher algorithms.

After · SP 800-57 Part 1 Rev. 5

Encryption is used to provide confidentiality for data. The data to be protected is called plaintext when in its original form. Encryption transforms the data into ciphertext. Ciphertext can be transformed back into plaintext using decryption. The approved algorithms for encryption/decryption are symmetric key algorithms: AES and TDEA. Each of these algorithms operates on blocks (chunks) of data during an encryption or decryption operation. For this reason, these algorithms are commonly called block cipher algorithms.