Java tutorial
import java.security.AlgorithmParameters; import java.security.Security; import javax.crypto.spec.IvParameterSpec; import org.bouncycastle.asn1.ASN1InputStream; import org.bouncycastle.asn1.util.ASN1Dump; public class MainClass { public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); AlgorithmParameters params = AlgorithmParameters.getInstance("AES", "BC"); IvParameterSpec ivSpec = new IvParameterSpec(new byte[16]); params.init(ivSpec); ASN1InputStream aIn = new ASN1InputStream(params.getEncoded("ASN.1")); System.out.println(ASN1Dump.dumpAsString(aIn.readObject())); } }