Secure Hash Algorithm 1 MAC: The Secure Hash Algorithm 1 has been proven to be vulnerable to chosen-prefix collision attacks as of 2019 (cf. sha-mbles.github.io). While this does not affect its usage as a MAC, safer alternatives such as SHA-256, or SHA-3 should be considered.
The Secure Hash Algorithm 1 has been proven to be vulnerable to collision attacks as of 2017 (cf. shattered.io). While this does not affect its usage as a MAC, safer alternatives such as SHA-256, or SHA-3 should be considered.