JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.

Malbolge language interpreter online ( JavaScript ). Malbolge, invented by Ben Olmstead in 1998, is an esoteric programming language designed to be as difficult to program in as possible.

Grom PE's Software

quipqiup - cryptoquip and cryptogram solver

青少年CTF在线工具箱

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