(Go) Blowfish OFB Output Feedback Mode Encryption

Demonstrates how to encrypt using Blowfish OFB (Output Feedback) mode.

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

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

    crypt := chilkat.NewCrypt2()

    // Use "blowfish2" to produce correct results that match published blowfish test vectors.
    crypt.SetCryptAlgorithm("blowfish2")
    // Set the cipher mode to Output Feedback
    crypt.SetCipherMode("ofb")
    crypt.SetKeyLength(256)

    // EncodingMode specifies the encoding of the output for
    // encryption, and the input for decryption.
    // It may be "hex", "url", "base64", "quoted-printable", or many other choices.
    crypt.SetEncodingMode("hex")

    // The block size of the blowfish algoirthm is 8 bytes, therefore the IV is 8 bytes.
    ivHex := "0001020304050607"
    crypt.SetEncodedIV(ivHex,"hex")

    // The secret key must equal the size of the key.  For
    // 256-bit encryption, the binary secret key is 32 bytes.
    keyHex := "603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"
    crypt.SetEncodedKey(keyHex,"hex")

    // Encrypt a string...
    encStr := crypt.EncryptStringENC("Emergencies have always been the pretext on which the safeguards of individual liberty have been eroded. -- Friedrich Hayek")
    fmt.Println(*encStr)

    decrypt := chilkat.NewCrypt2()
    decrypt.SetCryptAlgorithm("blowfish2")
    decrypt.SetCipherMode("ofb")
    decrypt.SetKeyLength(256)
    decrypt.SetEncodingMode("hex")
    decrypt.SetEncodedIV(ivHex,"hex")
    decrypt.SetEncodedKey(keyHex,"hex")

    // Now decrypt:
    decStr := decrypt.DecryptStringENC(*encStr)
    fmt.Println(*decStr)

    crypt.DisposeCrypt2()
    decrypt.DisposeCrypt2()