urity.sdk.crypto-samples.4.4.0-alpha.source-code.AuthenticatedEncryption Maven / Gradle / Ivy
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import com.virgilsecurity.crypto.VirgilBase64;
import com.virgilsecurity.sdk.crypto.Crypto;
import com.virgilsecurity.sdk.crypto.KeyPair;
import com.virgilsecurity.sdk.crypto.VirgilCrypto;
/**
* Authenticated encryption sample.
*
* @author Andrii Iakovenko
*
*/
public class AuthenticatedEncryption {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the text to be signed with alice's Private key: ");
String dataToSign = br.readLine();
byte[] data = dataToSign.getBytes();
System.out.println();
// Initialize Crypto
Crypto crypto = new VirgilCrypto();
// Generate keys for Alice and Bob
KeyPair alice = crypto.generateKeys();
KeyPair bob = crypto.generateKeys();
// Sign then Encrypt
byte[] cipherData = crypto.signThenEncrypt(data, alice.getPrivateKey(), bob.getPublicKey());
System.out.println(String.format("Cipher text in Base64:\n %1$s", VirgilBase64.encode(cipherData)));
// Decrypt then Verify
byte[] decryptedData = crypto.decryptThenVerify(cipherData, bob.getPrivateKey(), alice.getPublicKey());
System.out.println(String.format("Decrypted text:\n %1$s", new String(decryptedData, StandardCharsets.UTF_8)));
}
}