CODEWITHSUNDEEP
javaencryptionbouncycastlebc
Mike Blackout
Mike Blackout

Reputation: 1

Cannot handle supplied parameter spec: must be passed IES parameters java

I'm trying to use java for encrypt/decrypt text using "secp256r1" But unfortunately I can't it always produce error "Cannot handle supplied parameter spec: must be passed IES parameters"

Here is the full code example

import org.bouncycastle.crypto.generators.ECKeyPairGenerator;
import org.bouncycastle.jce.provider.BouncyCastleProvider;

import javax.crypto.Cipher;
import java.security.Security;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.spec.ECGenParameterSpec;
import java.util.Base64;

public class Generator {


    public static void main(String[] args) throws Exception {
        Security.addProvider(new BouncyCastleProvider());

        // Create KeyPairGenerator for ECC
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC");
        ECGenParameterSpec ecSpec = new ECGenParameterSpec("secp256r1");
        keyPairGenerator.initialize(ecSpec);

        // Generate Key Pair
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        PrivateKey privateKey = keyPair.getPrivate();
        PublicKey publicKey = keyPair.getPublic();

        // Output the keys
        System.out.println("Private Key: " + privateKey);
        System.out.println("Public Key: " + publicKey);
        // Message to encrypt
        String originalMessage = "This is a secret message!";

        // Convert to bytes
        byte[] messageBytes = originalMessage.getBytes();

        // Encrypt the message
        Cipher cipher = Cipher.getInstance("ECIES", "BC");
        cipher.init(Cipher.ENCRYPT_MODE, publicKey);
        byte[] encryptedMessage = cipher.doFinal(messageBytes);

        System.out.println("Encrypted Message: " +     Base64.getEncoder().encodeToString(encryptedMessage));

        byte[] encryptedBytes = Base64.getDecoder().decode(encryptedMessage);

        // Decrypt the message
        Cipher cipher2 = Cipher.getInstance("ECIES", "BC");
        cipher2.init(Cipher.DECRYPT_MODE, privateKey);
        byte[] decryptedMessage = cipher2.doFinal(encryptedBytes);

        System.out.println("Decrypted Message: " + new String(decryptedMessage));
    }

}

I tried to remove BC but no result the full exception :

Exception in thread "main" java.lang.IllegalArgumentException: cannot handle supplied parameter spec: must be passed IES parameters
at org.bouncycastle.jcajce.provider.asymmetric.ec.IESCipher.engineInit(Unknown Source)
at java.base/javax.crypto.Cipher.init(Cipher.java:1296)
at java.base/javax.crypto.Cipher.init(Cipher.java:1236)
at com.example.Main.main(Main.java:42)

Upvotes: 0

Views: 110

Answers (1)

Mike Blackout
Mike Blackout

Reputation: 1

It's the version of bouncycastle. when use bcprov-jdk15on 1.70 it works perfect But when use bcprov-jdk15to18 1.75 it produces the exception.

I used the version 1.77 the problem has gone. It's the latest version now on the time I wrote this answer

Upvotes: 0

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