PEM for PublicKey on Android

Question

I saw a number of similar questions, but nothing worked for me. I'm just trying to convert the RSA public key, which is in the PEM format that I received from the server, to PublicKeyin Android. Can someone point me in the right direction?

EDIT: I successfully used the following code to convert PEM to PublicKey, but after encoding the message, I get unexpected output ...

 public PublicKey getFromString(String keystr) throws Exception
    {
        // Remove the first and last lines

        String pubKeyPEM = keystr.replace("-----BEGIN PUBLIC KEY-----\n", "");
        pubKeyPEM = pubKeyPEM.replace("-----END PUBLIC KEY-----", "");

        // Base64 decode the data

        byte [] encoded = Base64.decode(pubKeyPEM);
        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encoded);
        KeyFactory kf = KeyFactory.getInstance("RSA");
        PublicKey pubkey = kf.generatePublic(keySpec);

        return pubkey;
    }

    public String RSAEncrypt(final String plain) throws NoSuchAlgorithmException, NoSuchPaddingException,
            InvalidKeyException, IllegalBlockSizeException, BadPaddingException, IOException {

        if (pubKey!=null) {
            cipher = Cipher.getInstance("RSA");
            cipher.init(Cipher.ENCRYPT_MODE, pubKey);
            encryptedBytes = cipher.doFinal(plain.getBytes());
            Log.d("BYTES", new String(encryptedBytes));
            return Hex.encodeHexString(encryptedBytes);
        }
        else
            return null;
    }

The result is as follows:

b6813f8791d67c0fa82890d005c8ff554b57143b752b34784ad271ec01bfaa9a6a31e7ae08444baef1585a6f78f3f848eecb1706bf7b2868fccefc9d728c30480f3aabc9ac5c3a9b4b3c74c2f7d6f0da235234953ea24b644112e04a2ec619f6bf95306ef30563c4608ec4b53ed7c15736d5f79c7fa1e35f2444beb366ae4c71

when I expect something closer to:

JfoSJGo1qELUbpzH8d4QXtafup+J2F9wLxHCop00BQ4YS0cRdRCKDfHpFPZQYjNeyQj00HwHbz+vj8haTPbpdqT94AHAl+VZ+TPAiUw1U5EXLLyy4tzbmfVI7CwvMm26lwB4REzYUZdedha1caxMEfxQ5duB+x4ol9eRZM/savg=

Is there any formatting or file type that I am missing?

Answer 1

... , - 64. return return new String(Base64.encode(encryptedBytes)); !