Lua

SHA256 Hash the Bytes Represented in a Hex String

Demonstrates how to compute the SHA256 hash of the bytes represented by a hexidecimal encoded string, and return the hash bytes as an hex encoded string. Lua

local chilkat = require("chilkat")

-- This example assumes the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

-- We wish to compute the SHA256 hash of the bytes 0x6C 0xF8 0xEA 0x51 0xE4 0xE0 0xF5 0x99 0xCF ...
local src = "6CF8EA51E4E0F599CF03EC8D58C3DCBC9C889A77FB2816B40DE25C2EC54E98A67EA517B"

local bd = chilkat.BinData.new()
local success = bd:append_encoded(src, "hex")

-- The bd now contains the bytes 0x6C 0xF8 0xEA 0x51 0xE4 0xE0 0xF5 0x99 0xCF ...

local crypt = chilkat.Crypt2.new()
crypt.hash_algorithm = "sha256"
crypt.encoding_mode = "hex"

-- Hash the bytes contained in bd, and return the 32-byte SHA256 hash as a hexidecimal encoded string.
local result = crypt:hash_bd_enc(bd)
print(result)