How to resolve the algorithm SHA-256 step by step in the Nim programming language

Published on 12 May 2024 09:40 PM
#Nim

How to resolve the algorithm SHA-256 step by step in the Nim programming language

Table of Contents

Problem Statement

SHA-256 is the recommended stronger alternative to SHA-1. See FIPS PUB 180-4 for implementation details. Either by using a dedicated library or implementing the algorithm in your language, show that the SHA-256 digest of the string "Rosetta code" is: 764faf5c61ac315f1497f9dfa542713965b785e5cc2f707d6468d7d1124cdfcf

Let's start with the solution:

Step by Step solution about How to resolve the algorithm SHA-256 step by step in the Nim programming language

Source code in the nim programming language

import nimcrypto

echo sha256.digest("Rosetta code")


import strutils

const SHA256Len = 32

proc SHA256(d: cstring, n: culong, md: cstring = nil): cstring {.cdecl, dynlib: "libssl.so", importc.}

proc SHA256(s: string): string =
  result = ""
  let s = SHA256(s.cstring, s.len.culong)
  for i in 0 ..< SHA256Len:
    result.add s[i].BiggestInt.toHex(2).toLower

echo SHA256("Rosetta code")

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