Hashing is an algorithm used to produce a hash value of some piece of data, such as a message or session key. Typical hashing algorithms include MD2, MD4, MD5, SHA-1 and SHA-2. This tutorial will guide you through the steps to create a Win32 console based sample application, which consists of cryptographic hashing function, by using Microsoft Cryptographic Service Providers (CSP).

The following diagram illustrate how the hash value is being generated in the sample project.

The sample project in this tutorial will cover the following hashing method:

1. MD5 – I know it’s very old, but i will cover this. :D
2. SHA1 – Again, I know it’s old, but i still will cover this. :)
3. SHA256
4. SHA382
5. SHA512

Let’s start the tutorial with the following steps:

1. Create a VC++ Win32 console application.

2. Add cryptoyb.h and cryptoyb.cpp to the sample project. Try to compile the sample project now and it should compile successfully. In case it failed, please make sure that Advapi32.lib is included in your project property pages under the following section: [Linker -> Input -> Additional Dependencies]

3. Enter the following code into the project main cpp file.

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#include "stdafx.h"
#include <iostream>
#include <string>
#include <tchar.h>
#include "cryptoyb.h"

int _tmain(int argc, _TCHAR* argv[])
{
  CryptoYB askyb;
  std::string hash;

  // MD5 String
  hash = askyb.MD5("HelloWorld");
  printf("MD5:\n%s\n\n",hash.c_str());

  // MD5 File
  hash = askyb.MD5_File("C:\\doc1.txt");
  printf("MD5 File:\n%s\n\n", hash.c_str());

  // SHA1 String
  hash = askyb.SHA1("HelloWorld");
  printf("SHA1:\n%s\n\n", hash.c_str());

  // SHA1 File
  hash = askyb.SHA1_File("C:\\doc1.txt");
  printf("SHA1 File:\n%s\n\n", hash.c_str());

  // SHA256 String
  hash = askyb.SHA256("HelloWorld");
  printf("SHA256:\n%s\n\n", hash.c_str());

  // SHA256 File
  hash = askyb.SHA256_File("C:\\doc1.txt");
  printf("SHA256 File:\nt%s\n\n", hash.c_str());

  // SHA384 String
  hash = askyb.SHA384("HelloWorld");
  printf("SHA384:\n%s\n\n", hash.c_str());

  // SHA384 File
  hash = askyb.SHA384_File("C:\\doc1.txt");
  printf("SHA384 File:\n%s\n\n", hash.c_str());

  // SHA515 String
  hash = askyb.SHA512("HelloWorld");
  printf("SHA512:\n%s\n\n", hash.c_str());

  // SHA512 File
  hash = askyb.SHA512_File("C:\\doc1.txt");
  printf("SHA512 File:\n%s\n\n", hash.c_str());

  getchar();

  return 0;
}

4. Compile the sample project and you should see the following result from the console application.

MD5:
68e109f0f40ca72a15e05cc22786f8e6

MD5 File:
9a1593445593a57aa897b7bc9da1abdc

SHA1:
db8ac1c259eb89d4a131b253bacfca5f319d54f2

SHA1 File:
9e5ab66092bd39b99566fa251faeddc1df96236e

SHA256:
872e4e50ce9990d8b041330c47c9ddd11bec6b503ae9386a99da8584e9bb12c4

SHA256 File:
t32a938096165c66c8d92dd03d9b80542ae43637bde3b39a72096e183007aeb30

SHA384:
293cd96eb25228a6fb09bfa86b9148ab69940e68903cbc0527a4fb150eec1ebe0f1ffce0bc5e3df3
12377e0a68f1950a

SHA384 File:
b56355b76bb7644aa79407e189bb3448b28d5669a6c7a6c5b1c81c16f3ce28d3ba87a72a751f0fec
454378e510ad12ec

SHA512:
8ae6ae71a75d3fb2e0225deeb004faf95d816a0a58093eb4cb5a3aa0f197050d7a4dc0a2d5c6fbae
5fb5b0d536a0a9e6b686369fa57a027687c3630321547596

SHA512 File:
97e0836f35877cc5a2fb82cf39584e65aad44b0cd617f36020042e4b705c8d740f231f0a2c071e45
77c5547b6efeb985d2aa7853541d938558cbd426e97f25c5

Download sample project: MSHashSample.zip