| 1 | package com.renomad.minum.utils; | |
| 2 | ||
| 3 | import javax.crypto.SecretKeyFactory; | |
| 4 | import javax.crypto.spec.PBEKeySpec; | |
| 5 | import java.nio.charset.StandardCharsets; | |
| 6 | import java.security.spec.KeySpec; | |
| 7 | ||
| 8 | /** | |
| 9 | * Handy helpers for dealing with cryptographic functions | |
| 10 | */ | |
| 11 | public final class CryptoUtils { | |
| 12 | ||
| 13 | private CryptoUtils() { | |
| 14 | // cannot construct | |
| 15 | } | |
| 16 | ||
| 17 | /** | |
| 18 | * Converts an array of bytes to their corresponding hex string | |
| 19 | * @param bytes an array of bytes | |
| 20 | * @return a hex string of that array | |
| 21 | */ | |
| 22 | public static String bytesToHex(byte[] bytes) { | |
| 23 | StringBuilder hexString = new StringBuilder(); | |
| 24 | for (byte b : bytes) { | |
| 25 |
1
1. bytesToHex : Replaced bitwise AND with OR → KILLED |
String hex = Integer.toHexString(0xff & b); |
| 26 |
1
1. bytesToHex : negated conditional → KILLED |
if (hex.length() == 1) hexString.append('0'); |
| 27 | hexString.append(hex); | |
| 28 | } | |
| 29 |
1
1. bytesToHex : replaced return value with "" for com/renomad/minum/utils/CryptoUtils::bytesToHex → KILLED |
return hexString.toString(); |
| 30 | } | |
| 31 | ||
| 32 | /** | |
| 33 | * Hash the input string with the provided PBKDF2 algorithm, and return a string representation | |
| 34 | * Note that the PBKDF2WithHmacSHA1 algorithm is specifically designed to take a long time, | |
| 35 | * to slow down an attacker. | |
| 36 | * <p> | |
| 37 | * See docs/http_protocol/password_storage_cheat_sheet | |
| 38 | * </p> | |
| 39 | */ | |
| 40 | public static String createPasswordHash(String password, String salt) { | |
| 41 |
1
1. createPasswordHash : replaced return value with "" for com/renomad/minum/utils/CryptoUtils::createPasswordHash → KILLED |
return createPasswordHash(password, salt, "PBKDF2WithHmacSHA1"); |
| 42 | } | |
| 43 | ||
| 44 | static String createPasswordHash(String password, String salt, String algorithm) { | |
| 45 | final KeySpec spec = new PBEKeySpec(password.toCharArray(), salt.getBytes(StandardCharsets.UTF_8), 65536, 128); | |
| 46 | final SecretKeyFactory factory; | |
| 47 | ||
| 48 | try { | |
| 49 | factory = SecretKeyFactory.getInstance(algorithm); | |
| 50 | final byte[] hashed = factory.generateSecret(spec).getEncoded(); | |
| 51 |
1
1. createPasswordHash : replaced return value with "" for com/renomad/minum/utils/CryptoUtils::createPasswordHash → KILLED |
return bytesToHex(hashed); |
| 52 | } catch (Exception e) { | |
| 53 | throw new UtilsException(e); | |
| 54 | } | |
| 55 | } | |
| 56 | ||
| 57 | } | |
Mutations | ||
| 25 |
1.1 |
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| 26 |
1.1 |
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| 29 |
1.1 |
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| 41 |
1.1 |
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| 51 |
1.1 |