CryptoUtils.java

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package model.security;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.GCMParameterSpec;
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import java.nio.charset.StandardCharsets;
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import java.security.GeneralSecurityException;
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import java.security.SecureRandom;
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import java.util.Base64;
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public class CryptoUtils {
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    private static final SecureRandom random = new SecureRandom();
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    private static final int IV_LENGTH = 12;
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    private static final int TAG_LENGTH = 128;
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    private CryptoUtils() {
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        // static class
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    }
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    public static String encrypt(SecretKey key, String plaintext) throws GeneralSecurityException {
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        byte[] iv = new byte[IV_LENGTH];
23 1 1. encrypt : removed call to java/security/SecureRandom::nextBytes → KILLED
 
        random.nextBytes(iv);
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        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
26 1 1. encrypt : removed call to javax/crypto/Cipher::init → KILLED
 
        cipher.init(Cipher.ENCRYPT_MODE, key, new GCMParameterSpec(TAG_LENGTH, iv));
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        byte[] ciphertext = cipher.doFinal(plaintext.getBytes(StandardCharsets.UTF_8));
29 1 1. encrypt : Replaced integer addition with subtraction → KILLED
 
        byte[] result = new byte[iv.length + ciphertext.length];
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31 1 1. encrypt : removed call to java/lang/System::arraycopy → KILLED
 
        System.arraycopy(iv, 0, result, 0, iv.length);
32 1 1. encrypt : removed call to java/lang/System::arraycopy → KILLED
 
        System.arraycopy(ciphertext, 0, result, iv.length, ciphertext.length);
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34 1 1. encrypt : replaced return value with "" for model/security/CryptoUtils::encrypt → KILLED
 
        return Base64.getEncoder().encodeToString(result);
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    }
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    public static String decrypt(SecretKey key, String encoded) throws GeneralSecurityException {
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        byte[] input = Base64.getDecoder().decode(encoded);
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        byte[] iv = new byte[IV_LENGTH];
41 1 1. decrypt : removed call to java/lang/System::arraycopy → KILLED
 
        System.arraycopy(input, 0, iv, 0, IV_LENGTH);
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43 1 1. decrypt : Replaced integer subtraction with addition → KILLED
 
        byte[] ciphertext = new byte[input.length - IV_LENGTH];
44 1 1. decrypt : removed call to java/lang/System::arraycopy → KILLED
 
        System.arraycopy(input, IV_LENGTH, ciphertext, 0, ciphertext.length);
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        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
47 1 1. decrypt : removed call to javax/crypto/Cipher::init → KILLED
 
        cipher.init(Cipher.DECRYPT_MODE, key, new GCMParameterSpec(TAG_LENGTH, iv));
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        byte[] plain = cipher.doFinal(ciphertext);
50 1 1. decrypt : replaced return value with "" for model/security/CryptoUtils::decrypt → KILLED
 
        return new String(plain, StandardCharsets.UTF_8);
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    }
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}
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Mutations

23

1.1
Location : encrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encrypt_dueEncryptDiversi_generanoCipherDiversi()] removed call to java/security/SecureRandom::nextBytes → KILLED

26

1.1
Location : encrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encrypt_dueEncryptDiversi_generanoCipherDiversi()] removed call to javax/crypto/Cipher::init → KILLED

29

1.1
Location : encrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encrypt_dueEncryptDiversi_generanoCipherDiversi()] Replaced integer addition with subtraction → KILLED

31

1.1
Location : encrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] removed call to java/lang/System::arraycopy → KILLED

32

1.1
Location : encrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] removed call to java/lang/System::arraycopy → KILLED

34

1.1
Location : encrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encrypt_dueEncryptDiversi_generanoCipherDiversi()] replaced return value with "" for model/security/CryptoUtils::encrypt → KILLED

41

1.1
Location : decrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] removed call to java/lang/System::arraycopy → KILLED

43

1.1
Location : decrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] Replaced integer subtraction with addition → KILLED

44

1.1
Location : decrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] removed call to java/lang/System::arraycopy → KILLED

47

1.1
Location : decrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] removed call to javax/crypto/Cipher::init → KILLED

50

1.1
Location : decrypt
Killed by : model.security.CryptoUtilsTest.[engine:junit-jupiter]/[class:model.security.CryptoUtilsTest]/[method:encryptDecrypt_roundTrip_testoNonVuoto()] replaced return value with "" for model/security/CryptoUtils::decrypt → KILLED

Active mutators

Tests examined


Report generated by PIT 1.22.0