(Go) Write PKCS1 or PKCS8 Public Key PEM

Demonstrates how to write either PKCS1 or PKCS8 format PEM files. PKCS1 public keys have this PEM format:

-----BEGIN RSA PUBLIC KEY-----
BASE64 ENCODED DATA
-----END RSA PUBLIC KEY-----

-----BEGIN PUBLIC KEY-----
BASE64 ENCODED DATA
-----END PUBLIC KEY-----

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    // Unlock the Chilkat API.
    // Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
    // by calling UnlockBundle.  It requires a Bundle unlock code.
    chilkatGlob := chilkat.NewGlobal()
    success := chilkatGlob.UnlockBundle("Anything for 30-day trial.")
    if success != true {
        fmt.Println(chilkatGlob.LastErrorText())
        chilkatGlob.DisposeGlobal()
        return
    }

    pem := chilkat.NewPem()

    // Load a public key from a PEM file.
    // (Assume the PEM contains at least one public key..)
    success = pem.LoadPemFile("/Users/chilkat/testData/pem/myPublicKey.pem")
    if success != true {
        fmt.Println(pem.LastErrorText())
        chilkatGlob.DisposeGlobal()
        pem.DisposePem()
        return
    }

    var i int
    numPublicKeys := pem.NumPublicKeys()
    if numPublicKeys == 0 {
        fmt.Println(("Error: Expected the PEM to contain public keys."))
        chilkatGlob.DisposeGlobal()
        pem.DisposePem()
        return
    }

    // Get each public key as PEM, first in PKCS1 format, then in PKCS8.
    for i = 1; i <= numPublicKeys; i++ {

        // First output to PKCS1 PEM format:
        fmt.Println("This is PKCS1 format:")
        pem.SetPublicKeyFormat("pkcs1")
        fmt.Println(*pem.ToPem())

        // Now PKCS8 PEM format:
        fmt.Println("This is PKCS8 format:")
        pem.SetPublicKeyFormat("pkcs8")
        fmt.Println(*pem.ToPem())

    }


    chilkatGlob.DisposeGlobal()
    pem.DisposePem()