C#

Hash Binary Data (SHA256 and other hash algorithms)

Demonstrates how to hash binary bytes using SHA256, SHA384, SHA512, MD2, MD5, HAVAL, RIPEMD, etc. C#

bool success = false;

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

//  Let's load a binary file to get the bytes..
Chilkat.BinData jpgData = new Chilkat.BinData();
success = jpgData.LoadFile("qa_data/jpg/starfish.jpg");
if (success != true) {
    Debug.WriteLine("Failed to load file.");
    return;
}

byte[] jpgBytes = null;
jpgBytes = jpgData.GetBinary();

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

//  Choose the hash algorithm.
//  Can be  "sha1", "sha256", "sha384", "sha512", "md2", "md5", "haval", "ripemd128", "ripemd160","ripemd256", or "ripemd320".
crypt.HashAlgorithm = "sha256";

byte[] hashBytes = null;
hashBytes = crypt.HashBytes(jpgBytes);

//  Let's examine the hash as a hex string.
Chilkat.StringBuilder sb = new Chilkat.StringBuilder();
sb.AppendEncoded(hashBytes,"hex");
Debug.WriteLine("SHA256 hash = " + sb.GetAsString());

//  We could alternatively hash the bytes and receive the hex result directly:
crypt.EncodingMode = "hex";
string hashHexStr = crypt.HashBytesENC(jpgBytes);
Debug.WriteLine("SHA256 hash = " + hashHexStr);