Go

Generate RSA SSH Key

See more SSH Key Examples

Generates an RSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY). Go

    success := false

    key := chilkat.NewSshKey()

    // numBits may range from 384 to 4096.  Typical values are
    // 1024 or 2048.  (must be a multiple of 64)
    // A good choice for the exponent is 65537.  Chilkat recommends
    // always using this value.
    numBits := 2048
    exponent := 65537
    success = key.GenerateRsaKey(numBits,exponent)
    if success != true {
        fmt.Println("Bad params passed to RSA key generation method.")
        key.DisposeSshKey()
        return
    }

    // Note: Generating a public/private key pair is CPU intensive
    // and may take a short amount of time (more than few seconds,
    // but less than a minute).

    var exportedKey *string = new(string)
    var exportEncrypted bool

    // Export the RSA private key to OpenSSH, PuTTY, and XML and save. 
    exportEncrypted = false
    exportedKey = key.ToOpenSshPrivateKey(exportEncrypted)
    // Chilkat provides a SaveText method for convenience...
    success = key.SaveText(*exportedKey,"privkey_openssh_unencrypted.pem")

    // Export with encryption to OpenSSH private key format:
    key.SetPassword("secret")
    exportEncrypted = true
    exportedKey = key.ToOpenSshPrivateKey(exportEncrypted)
    success = key.SaveText(*exportedKey,"privkey_openssh_encrypted.pem")

    // Export the RSA private key to unencrypted PuTTY format:
    exportEncrypted = false
    exportedKey = key.ToPuttyPrivateKey(exportEncrypted)
    success = key.SaveText(*exportedKey,"privkey_putty_unencrypted.ppk")

    // Export the RSA private key to encrypted PuTTY format:
    key.SetPassword("secret")
    exportEncrypted = true
    exportedKey = key.ToPuttyPrivateKey(exportEncrypted)
    success = key.SaveText(*exportedKey,"privkey_putty_encrypted.ppk")

    // Export private key to XML:
    exportedKey = key.ToXml()
    success = key.SaveText(*exportedKey,"privkey.xml")

    // ----------------------------------------------------
    // Now for the public key....
    // ----------------------------------------------------

    // The Secure Shell (SSH) Public Key File Format
    // is documented in RFC 4716.
    exportedKey = key.ToRfc4716PublicKey()
    success = key.SaveText(*exportedKey,"pubkey_rfc4716.pub")

    // OpenSSH has a separate public-key file format, which 
    // is also supported by Chilkat SshKey:
    exportedKey = key.ToOpenSshPublicKey()
    success = key.SaveText(*exportedKey,"pubkey_openSsh.pub")

    fmt.Println("Finished.")

    key.DisposeSshKey()