The HMAC-based one-time password algorithm defined in RFC 4226.

learn more… | top users | synonyms

0
votes
1answer
41 views

How does the HOTP dynamic truncation function generalize to longer hashes?

HOTP, the HMAC-based One-Time Password algorithm from RFC 4226, uses a "dynamic truncation" function to turn the 20 byte HMAC-SHA-1 value into a 31 bit string. The dynamic truncation (from Section ...