General purpose crypto utilities

Lead Maintainer - C J Silverio

Returns a cryptographically strong pseudo-random data string. Takes a size argument for the length of the string.

Returns a cryptographically strong pseudo-random data string consisting of only numerical digits (0-9). Takes a size argument for the length of the string.

Compare two strings using fixed time algorithm (to prevent time-based analysis of MAC digest match). Returns true if the strings match, false if they differ.