Working on a toy implementation of time lock encryption, and discovering the joys of libgcrypt. !ilovefs https://gnupg.org/documentation/manuals/gcrypt/ They should have taught us this stuff in Network Security class, but they didn't. Instead they simply made us memorize various encryption (DES, AES, RSA, etc.) and hashing algorithms (MD5, SHA, etc.) without providing the slightest insight. :-/ I barely passed the course!