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javaencryptionrsapublic

Java RSA Public Key from String Error

I'm trying to convert a string to RSA public key, but I always get errors... Public Key:

    -----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1OzdsHD2yN2USnmgTplY
otoh974+mQ9nw9T3UmxCossD9WjdPJ7UbHXeMVgFrY53x9YfPFmuA5/YNs1eXzSq
Y+GdJIrbdQCHDzWLzNv0mbbAvvv7s706F5HoAPMgjBYV7vZDbiIinupxpx5rns4u
AYJTWOyByCoSsJ9ucVg3kxl3dYrRk9VXH3dHar8CiypvDJPnBCS58xXgh12dPJES
35kvtkDmDsMoBcol3PIK7a8HaMQYmYsAPF+TzhURaUAcVJu/jhOUaDf/4w28JdaW
xykTaDqOZD72RYb1rovK3uFEfgKBJgaAFhPlY2/4m/eNW/SLfwSCR9FvHc88fYpJ
bwIDAQAB
-----END PUBLIC KEY-----

The code:

pub.replace("-----BEGIN PUBLIC KEY-----\n", "").replace("-----END PUBLIC KEY-----", "");
        byte[] publicByte = Base64.getDecoder().decode(pub);
        System.out.println(publicByte.length+"deb");

        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(publicByte);
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");

        PublicKey pkey = keyFactory.generatePublic(keySpec);

Error:

java.lang.IllegalArgumentException: Illegal base64 character 2d

I would be happy for any help.

Solution

  • 0x2d is -. The hyphens etc. are still there. String.replace() returns the new value. It doesn't mutate the string you called it on.