Java

Load a Public Key from BinData

Demonstrates the Chilkat PublicKey.LoadBd method, which loads a public key from the bytes in a BinData. The only argument is the BinData, which may contain binary DER or any textual representation recognized by LoadFromString.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: When key bytes are already in memory — downloaded, extracted from a container, or pulled from a database — this loads them directly with no temporary file. It applies the same content inspection as the string and file loaders, so it accepts both binary DER and any recognized text form. It is the in-memory counterpart to LoadFromFile.

Chilkat Java Downloads

Download Chilkat for Java

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Demonstrates the PublicKey.LoadBd method, which loads a public key from the bytes in a BinData.
    //  The only argument is the BinData, which may contain binary DER or any textual representation
    //  recognized by LoadFromString.

    CkBinData bd = new CkBinData();
    success = bd.LoadFile("qa_data/public.der");
    if (success == false) {
        System.out.println(bd.lastErrorText());
        return;
        }

    CkPublicKey pubKey = new CkPublicKey();
    success = pubKey.LoadBd(bd);
    if (success == false) {
        System.out.println(pubKey.lastErrorText());
        return;
        }

    System.out.println("Loaded a " + pubKey.keyType() + " public key.");
  }
}