On Sunday, 3 December 2023 at 13:42:53 UTC, zoujiaqing wrote: > Use botan so easy: Well, what about: ```D import std.digest.sha; import std.stdio; void main() { string appKey = "11111111111111111111111111111111111111111111111111111"; appKey.sha256Of.toHexString.writeln; } ``` Not sure if it's really more complicated than Botan 🤷♂️️