51 lines
1.8 KiB
Java
51 lines
1.8 KiB
Java
package fr.xephi.authme.security.crypts;
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import fr.xephi.authme.ConsoleLogger;
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import fr.xephi.authme.security.crypts.description.AsciiRestricted;
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import fr.xephi.authme.security.pbkdf2.PBKDF2Engine;
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import fr.xephi.authme.security.pbkdf2.PBKDF2Parameters;
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import javax.xml.bind.DatatypeConverter;
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@AsciiRestricted
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public class CryptPBKDF2Django extends HexSaltedMethod {
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private static final int DEFAULT_ITERATIONS = 24000;
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@Override
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public String computeHash(String password, String salt, String name) {
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String result = "pbkdf2_sha256$" + DEFAULT_ITERATIONS + "$" + salt + "$";
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PBKDF2Parameters params = new PBKDF2Parameters("HmacSHA256", "ASCII", salt.getBytes(), DEFAULT_ITERATIONS);
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PBKDF2Engine engine = new PBKDF2Engine(params);
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return result + String.valueOf(DatatypeConverter.printBase64Binary(engine.deriveKey(password, 32)));
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}
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@Override
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public boolean comparePassword(String password, HashedPassword hashedPassword, String unusedName) {
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String[] line = hashedPassword.getHash().split("\\$");
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if (line.length != 4) {
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return false;
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}
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int iterations;
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try {
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iterations = Integer.parseInt(line[1]);
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} catch (NumberFormatException e) {
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ConsoleLogger.logException("Could not read number of rounds in '" + hashedPassword.getHash()
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+ " for CryptPBKDF2Django", e);
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return false;
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}
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String salt = line[2];
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byte[] derivedKey = DatatypeConverter.parseBase64Binary(line[3]);
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PBKDF2Parameters params = new PBKDF2Parameters("HmacSHA256", "ASCII", salt.getBytes(), iterations, derivedKey);
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PBKDF2Engine engine = new PBKDF2Engine(params);
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return engine.verifyKey(password);
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}
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@Override
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public int getSaltLength() {
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return 12;
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}
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}
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