Also as a base for optimal hashing in Unique Permutation Hashing. The RADIUS protocol transmits obfuscated passwords using a shared secret and the MD5 hashing algorithm. Several hash table implementations are based on universal hashing. The SHA-1 algorithm is the base hashing function for consistent hashing. There are several common algorithms for hashing integers. Inputted data is manipulated by a hashing algorithm. Secondly, hashing algorithms are not reversible. HMACs are substantially less affected by collisions than their underlying hashing algorithms alone. He is also one of the originators of the Locality-sensitive hashing algorithm. It is different from proof-of-work systems that run difficult hashing algorithms to validate electronic transactions. He developed spamsum, based on locality-sensitive hashing algorithms. Radix conversion hashing of strings minimizes the number of collisions. It contains several database implementations, including a B-tree and one built around extensible hashing. Version-3 and version-5 UUIDs are generated by hashing a namespace identifier and name.