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The TDEA is made available for use by federal agencies within the context of a total security program consisting of physical security procedures, good information management practices, and computer system/network access controls.
Authorized users of computer data cryptographically protected using TDEA must have the key that was used to protect the data in order to process the protected data. The cryptographic algorithm specified in this recommendation is assumed to be commonly known among its users. The cryptographic security of the data depends on the security provided for the key used to protect the data.
- NIST, Recommendation for the Triple Data Encryption Algorithm (TDEA) Block Cipher, Special Publication 800-67 (May 2004).