/
AesUsingMultiplePartEncryptionTest.java
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/
AesUsingMultiplePartEncryptionTest.java
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package org.thoth.crypto.symmetric;
import java.io.ByteArrayOutputStream;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Optional;
import javax.crypto.SecretKey;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.thoth.crypto.io.ByteArrayReader;
import org.thoth.crypto.io.ByteArrayWriter;
/**
*
* @author Michael Remijan mjremijan@yahoo.com @mjremijan
*/
public class AesUsingMultiplePartEncryptionTest {
static Path secretKeyFile;
@BeforeClass
public static void beforeClass() throws Exception {
// Store the SecretKey bytes in the ./target diretory. Do
// this so it will be ignore by source control. We don't
// want this file committed.
secretKeyFile
= Paths.get("./target/Aes256.key").toAbsolutePath();
// Generate a SecretKey for the test
SecretKey secretKey
= new AesSecretKeyProducer().produce();
// Store the byte[] of the SecretKey. This is the
// "private key file" you want to keep safe.
ByteArrayWriter writer = new ByteArrayWriter(secretKeyFile);
writer.write(secretKey.getEncoded());
}
@Test
public void encrypt_and_decrypt_using_same_Aes256_instance_long() {
// setup
SecretKey secretKey
= new AesSecretKeyProducer().produce(
new ByteArrayReader(secretKeyFile).read()
);
Aes aes
= new AesUsingMultiplePartEncryption(secretKey);
String toEncrypt
= "encrypt me1, encrypt me2, encrypt me3, encrypt me4, encrypt me5, encrypt me6, encrypt me7, encrypt me8, encrypt me9, encrypt me10";
// run
byte[] encryptedBytes
= aes.encrypt(toEncrypt, Optional.empty());
String decrypted
= aes.decrypt(encryptedBytes, Optional.empty());
// assert
Assert.assertEquals(toEncrypt, decrypted);
}
@Test
public void encrypt_and_decrypt_using_same_Aes256_instance_short() {
// setup
SecretKey secretKey
= new AesSecretKeyProducer().produce(
new ByteArrayReader(secretKeyFile).read()
);
Aes aes
= new AesUsingMultiplePartEncryption(secretKey);
String toEncrypt
= "encrypt me";
// run
byte[] encryptedBytes
= aes.encrypt(toEncrypt, Optional.empty());
String decrypted
= aes.decrypt(encryptedBytes, Optional.empty());
// assert
Assert.assertEquals(toEncrypt, decrypted);
}
public void encrypt_and_decrypt_with_aad_using_same_Aes256_instance_short() {
// setup
SecretKey secretKey
= new AesSecretKeyProducer().produce(
new ByteArrayReader(secretKeyFile).read()
);
Aes aes
= new AesUsingMultiplePartEncryption(secretKey);
String toEncrypt
= "encrypt me aad";
// run
byte[] encryptedBytes
= aes.encrypt(toEncrypt, Optional.of("JUnit AAD"));
String decrypted
= aes.decrypt(encryptedBytes, Optional.of("JUnit AAD"));
// assert
Assert.assertEquals(toEncrypt, decrypted);
}
public void encrypt_and_decrypt_with_aad_using_same_Aes256_instance_long() {
// setup
SecretKey secretKey
= new AesSecretKeyProducer().produce(
new ByteArrayReader(secretKeyFile).read()
);
Aes aes
= new AesUsingMultiplePartEncryption(secretKey);
String toEncrypt
= "encrypt me aad 1, encrypt me aad 2, encrypt me aad 3, encrypt me aad 4, encrypt me aad 5, encrypt me aad 6, encrypt me aad 7, encrypt me aad 8, encrypt me aad 9, encrypt me aad 10";
// run
byte[] encryptedBytes
= aes.encrypt(toEncrypt, Optional.of("JUnit AAD"));
String decrypted
= aes.decrypt(encryptedBytes, Optional.of("JUnit AAD"));
// assert
Assert.assertEquals(toEncrypt, decrypted);
}
@Test
public void encrypt_and_decrypt_using_different_Aes256_instance_long()
throws Exception {
// setup
SecretKey secretKey
= new AesSecretKeyProducer().produce(
new ByteArrayReader(secretKeyFile).read()
);
Aes aesForEncrypt
= new AesUsingMultiplePartEncryption(secretKey);
Aes aesForDecrypt
= new AesUsingMultiplePartEncryption(secretKey);
String toEncrypt
= "encrypt me1, encrypt me2, encrypt me3, encrypt me4, encrypt me5, encrypt me6, encrypt me7, encrypt me8, encrypt me9, encrypt me10";
// run
byte[] encryptedBytes
= aesForEncrypt.encrypt(toEncrypt, Optional.empty());
ByteArrayOutputStream baos
= new ByteArrayOutputStream();
baos.write(encryptedBytes);
String decrypted
= aesForDecrypt.decrypt(baos.toByteArray(), Optional.empty());
// assert
Assert.assertEquals(toEncrypt, decrypted);
}
@Test
public void encrypt_and_decrypt_using_different_Aes256_instance_short()
throws Exception {
// setup
SecretKey secretKey
= new AesSecretKeyProducer().produce(
new ByteArrayReader(secretKeyFile).read()
);
Aes aesForEncrypt
= new AesUsingMultiplePartEncryption(secretKey);
Aes aesForDecrypt
= new AesUsingMultiplePartEncryption(secretKey);
String toEncrypt
= "eNcryPt Me";
// run
byte[] encryptedBytes
= aesForEncrypt.encrypt(toEncrypt, Optional.empty());
ByteArrayOutputStream baos
= new ByteArrayOutputStream();
baos.write(encryptedBytes);
String decrypted
= aesForDecrypt.decrypt(baos.toByteArray(), Optional.empty());
// assert
Assert.assertEquals(toEncrypt, decrypted);
}
@Test
public void foo() {
String s = "ABC";
int chunkSize = 5;
String[] chunks = s.split("(?<=\\G.{" + chunkSize + "})");
System.out.println(Arrays.toString(chunks));
}
}