(Java) Extract a File from a .p7m (PKCS7 Signed-Data)

Java example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file. It can be verified and restored by calling VerifyP7M.

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

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[])
  {
    CkCrypt2 crypt = new CkCrypt2();

    //  Any string argument automatically begins the 30-day trial.
    boolean success;
    success = crypt.UnlockComponent("30-day trial");
    if (success != true) {
        System.out.println(crypt.lastErrorText());
        return;
    }

    String outFile;
    outFile = "/Users/chilkat/testData/pdf/sample.pdf";
    String inFile;
    inFile = "/Users/chilkat/testData/p7m/sample.pdf.p7m";

    //  Verify and restore the original file:
    success = crypt.VerifyP7M(inFile,outFile);
    if (success == false) {
        System.out.println(crypt.lastErrorText());
        return;
    }

    System.out.println("Success!");
  }
}