What is ISO-IEC 9797-2:2014

ISO-IEC 9797-2:2014 is an international standard that provides guidelines for the implementation of Message Authentication Codes (MACs). These codes are used to verify the integrity and authenticity of messages sent between two parties. The standard defines various MAC algorithms, their inputs and outputs, as well as the steps required for their generation and verification.

Benefits of Using ISO-IEC 9797-2:2014

Implementing ISO-IEC 9797-2:2014 brings several advantages. Firstly, it ensures that messages transmitted over a network remain unaltered during transit. By generating and verifying unique MACs, this standard helps detect any modifications made to the message content, providing data integrity. Additionally, it supports authentication by confirming the identity of the sender. The recipient can trust that the message is indeed from the claimed source, as it will be able to verify the MAC provided by the sender. ISO-IEC 9797-2:2014 also enhances confidentiality as a compromised MAC key cannot be used to derive the original message.

Implementation of ISO-IEC 9797-2:2014

To implement ISO-IEC 9797-2:2014, the first step is to choose a suitable MAC algorithm from the options provided by the standard. Common algorithms include CMAC, CBC-MAC, and HMAC. Once the algorithm is selected, the next step is to define the key size and the padding method. It is crucial to use a secure key, ensuring that it is kept secret and protected against unauthorized access. The message, along with the key, is then processed through the selected algorithm to generate the MAC. On the recipient side, the same MAC algorithm and key are used to verify the integrity and authenticity of the message. If the computed MAC matches the received MAC, the message is considered valid. Otherwise, it indicates tampering or an authentication failure.

Conclusion

ISO-IEC 9797-2:2014 plays a vital role in ensuring secure communication by protecting against data tampering and verifying the authenticity of messages. By implementing this standard, organizations can safeguard their networks, ensuring the confidentiality, integrity, and authenticity of transmitted data. It is important for companies that handle sensitive information to adopt ISO-IEC 9797-2:2014 as part of their security measures.