(Go) Hash Binary Data (SHA256 and other hash algorithms)

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

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    // Let's load a binary file to get the bytes..
    jpgData := chilkat.NewBinData()
    success := jpgData.LoadFile("qa_data/jpg/starfish.jpg")
    if success != true {
        fmt.Println("Failed to load file.")
        jpgData.DisposeBinData()
        return
    }

    var jpgBytes []byte
    jpgBytes = jpgData.GetBinary()

    crypt := chilkat.NewCrypt2()

    // Choose the hash algorithm.
    // Can be  "sha1", "sha256", "sha384", "sha512", "md2", "md5", "haval", "ripemd128", "ripemd160","ripemd256", or "ripemd320".
    crypt.SetHashAlgorithm("sha256")

    var hashBytes []byte
    hashBytes = crypt.HashBytes(jpgBytes)

    // Let's examine the hash as a hex string.
    sb := chilkat.NewStringBuilder()
    sb.AppendEncoded(hashBytes,"hex")
    fmt.Println("SHA256 hash = ", *sb.GetAsString())

    // We could alternatively hash the bytes and receive the hex result directly:
    crypt.SetEncodingMode("hex")
    hashHexStr := crypt.HashBytesENC(jpgBytes)
    fmt.Println("SHA256 hash = ", *hashHexStr)

    jpgData.DisposeBinData()
    crypt.DisposeCrypt2()
    sb.DisposeStringBuilder()