3 ms·

This reminds me of the one time someone tried to get me to implement TOTP in an environment without an implementation of HMAC-SHA1 (or SHA1 itself for that matt

This reminds me of the one time someone tried to get me to implement TOTP in an environment without an implementation of HMAC-SHA1 (or SHA1 itself for that matter). There was also no easy way of implementing HMAC-SHA1. While protesting the insanity of the situation I produced a hacked together implementation using MD5 (which was, somehow, available).

ignoramous 4y ago
> While protesting the insanity of the situation I produced a hacked together implementation using MD5 (which was, somehow, available). Not sure of its cryptographic guarantees but one can sponge MD5 for more goodness: https://archive.is/pqFnv https://archive.is/pqFnv