本文介绍了Drupal的密码的Java autentication的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我尝试模仿的Drupal 7正在检查在Java中正确的密码的方式。
发现了一些code如下指导：https://github.com/CraftFire/AuthDB-Legacy/blob/master/src/main/java/com/authdb/scripts/cms/Drupal.java并提取了code我需要的。
I try to mimic the way Drupal 7 is checking for a correct password in Java.Found some code as a guideline here: https://github.com/CraftFire/AuthDB-Legacy/blob/master/src/main/java/com/authdb/scripts/cms/Drupal.java and extracted the code i needed.
问题是不过，当我给的密码和哈希版本（以提取所需的迭代盐和金额），我得到不同的结果。
The thing is however that when i give the password and the hashed version (in order to extract the salt and amount of iterations needed), i get different results.
使用Drupal的密码哈希脚本生成的密码
导致：
The passwords are generated using the Drupal password-hash scriptresulting in:
Expected value = $S$DxVn7wubSRzoK9X2pkGx4njeDRkLEgdqPphc2ZXkkb8Viy8JEGf3
Calculated value = $S$DxVn7wubSpQ1CpUnBZZHNqIXMp2XMVZHMYBqAs24NsUHMY7HBkYn
Expected value = $S$DOASeKfBzZoqgSRl/mBnK06GlLESyMHZ81jyUueEBiCrkkxxArpR
Calculated value = $S$DOASeKfBzs.XMVZ1NkYXNmIqMpEHAoEaMYJ1NmUHCZJaBZFnAZFX
任何人能帮助我/告诉我什么，我做错了什么？
谢谢你。
Anyone able to help me / tell me what i'm doing wrong here?Thanks.
code：
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
class test {
public static void main(String args[]) {
// Passwords and hashes generated by Drupal.
checkPassword("test" , "$S$DxVn7wubSRzoK9X2pkGx4njeDRkLEgdqPphc2ZXkkb8Viy8JEGf3");
checkPassword("barbaz", "$S$DOASeKfBzZoqgSRl/mBnK06GlLESyMHZ81jyUueEBiCrkkxxArpR");
}
private static String itoa64 = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
private static final int DRUPAL_HASH_LENGTH = 55;
private static int password_get_count_log2(String setting) { return itoa64.indexOf(setting.charAt(3)); }
/**
* Note: taken from the default Drupal 7 password algorithm
* @param candidate
* the clear text password
* @param saltedEncryptedPassword
* the salted encrypted password string to check => NEEDS TO BE THE DEFAULT DRUPAL 7 PASSWORD HASH.
* @return true if the candidate matches, false otherwise.
*/
public static boolean checkPassword(String candidate, String saltedEncryptedPassword) {
if (candidate == null) {
return false;
}
if (saltedEncryptedPassword == null) {
return false;
}
String hash = password_crypt(candidate, saltedEncryptedPassword);
System.out.println("Tested value = " + saltedEncryptedPassword);
System.out.println("Calced value = " + hash);
return hash == saltedEncryptedPassword;
}
public static String SHA512(String text) {
byte[] sha1hash = new byte[40];
try {
MessageDigest md = MessageDigest.getInstance("SHA-512");
md.update(text.getBytes("UTF-8"), 0, text.length());
sha1hash = md.digest();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return convertToHex(sha1hash);
}
private static String convertToHex(byte[] data) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
int halfbyte = (data[i] >>> 4) & 0x0F;
int two_halfs = 0;
do {
if ((0 <= halfbyte) && (halfbyte <= 9))
buf.append((char) ('0' + halfbyte));
else
buf.append((char) ('a' + (halfbyte - 10)));
halfbyte = data[i] & 0x0F;
}
while(two_halfs++ < 1);
}
return buf.toString();
}
private static String password_crypt(String password, String setting) {
// The first 12 characters of an existing hash are its setting string.
setting = setting.substring(0, 12);
int count_log2 = password_get_count_log2(setting);
String salt = setting.substring(4, 12);
// Hashes must have an 8 character salt.
if (salt.length() != 8) {
return null;
}
// Convert the base 2 logarithm into an integer.
int count = 1 << count_log2;
String hash;
try {
hash = SHA512(salt + password);
do {
hash = SHA512(hash + password);
} while (--count >= 0);
} catch(Exception e) {
return null;
}
int len = hash.length();
String output = setting + password_base64_encode(hash, len);
return (output.length() > 0) ? output.substring(0, DRUPAL_HASH_LENGTH) : null;
}
private static String password_base64_encode(String input, int count) {
StringBuffer output = new StringBuffer();
int i = 0, value;
do {
value = input.charAt(i++);
output.append(itoa64.charAt(value & 0x3f));
if (i < count) {
value |= input.charAt(i) << 8;
}
output.append(itoa64.charAt((value >> 6) & 0x3f));
if (i++ >= count) {
break;
}
if (i < count) {
value |= input.charAt(i) << 16;
}
output.append(itoa64.charAt((value >> 12) & 0x3f));
if (i++ >= count) {
break;
}
output.append(itoa64.charAt((value >> 18) & 0x3f));
} while (i < count);
return output.toString();
}
}
-
PS。
有一件事我已经看到的是以下情况：
考虑以下功能：
--ps.One thing i already see is the following:Consider these functions:
public String convertToHex(byte[] data) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
int halfbyte = (data[i] >>> 4) & 0x0F;
int two_halfs = 0;
do {
if ((0 <= halfbyte) && (halfbyte <= 9))
buf.append((char) ('0' + halfbyte));
else
buf.append((char) ('a' + (halfbyte - 10)));
halfbyte = data[i] & 0x0F;
}
while(two_halfs++ < 1);
}
return buf.toString();
}
和
public String convertToHex(byte [] raw) {
StringBuilder hex = new StringBuilder(2 * raw.length);
for (final byte b : raw) {
int hiVal = (b & 0xF0) >> 4;
int loVal = b & 0x0F;
hex.append((char) ('0' + (hiVal + (hiVal / 10 * 7))));
hex.append((char) ('0' + (loVal + (loVal / 10 * 7))));
}
return hex.toString();
}
第一个函数返回字符串为小写，二是返回更高的情况下字符串。不知道哪个使用，无论是在端返回不同的结果，但也不是令人满意的。
The first function returns the string as a lowercase, the second is returned as higher case string. Don't know which to use, both are returning different results in the end, but neither is satisfying.
- 编辑 -
几乎有??? ...
Almost there???...
来到了一步，改变了这个问题有点...
在Drupal下面的函数：
Came a step further, changes the question a bit...In Drupal the following function is used:
$hash = hash($algo, $salt . $password, TRUE);
返回
'���Y�emb
ӈ3����4��q����h�osab��V�!IS�uC�*[�
如你所见，我们不需要十六进制版本，因为你会得到一个总不同的哈希回来...
所以我改变了code在java中：
As you see, we do not need the hex version, since you get a total different hash back...So i altered the code in java:
public byte[] SHA512(String text) {
byte[] sha1hash = new byte[50];
try {
MessageDigest md = MessageDigest.getInstance("SHA-512");
md.update(text.getBytes("UTF-8"), 0, text.length());
sha1hash = md.digest();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return sha1hash;
}
--snip--
hash = new String(SHA512(salt + password));
System.out.println(hash);
这将返回：
'���Y�emb
ӈ3����4��q���h�osab��V�!IS�uC�*[�
正如你所看到多数民众赞成在几乎相同....
As you see thats ALMOST the same....
php: ӈ3����4��q����h�osab��V�!IS�uC�*[�
java: ӈ3����4��q���h�osab��V�!IS�uC�*[�
任何人有一个线索如何解决最后一部分？
形式新的String（SHA512（盐+密码，不管codeC'））;没帮我...
谢谢！
Anyone got a clue how to fix that last part?The form new String(SHA512(salt + password,'Whatevercodec')); did not help me...Thanks!
推荐答案
我建议你做这样的事情：
I suggest that you do something like this:
import java.security.NoSuchAlgorithmException;
public class hash {
private static final int DRUPAL_HASH_LENGTH = 55;
private static String _password_itoa64() {
return "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
}
public static void main(String args[]) throws Exception {
// Passwords and hashes generated by Drupal.
checkPassword("adrian", "$S$DNbBTrkalsPChLsqajHUQS18pBBxzSTQW0310SzivTy7HDQ.zgyG");
checkPassword("test" , "$S$DxVn7wubSRzoK9X2pkGx4njeDRkLEgdqPphc2ZXkkb8Viy8JEGf3");
checkPassword("barbaz", "$S$DOASeKfBzZoqgSRl/mBnK06GlLESyMHZ81jyUueEBiCrkkxxArpR");
}
private static int password_get_count_log2(String setting) {
return _password_itoa64().indexOf(setting.charAt(3));
}
private static byte[] sha512(String input) {
try {
return java.security.MessageDigest.getInstance("SHA-512").digest(input.getBytes());
} catch (NoSuchAlgorithmException ex) {
ex.printStackTrace();
}
return new byte[0];
}
private static byte[] sha512(byte[] input) {
try {
return java.security.MessageDigest.getInstance("SHA-512").digest(input);
} catch (NoSuchAlgorithmException ex) {
ex.printStackTrace();
}
return new byte[0];
}
/**
* Note: taken from the default Drupal 7 password algorithm
*
* @param candidate the clear text password
* @param saltedEncryptedPassword the salted encrypted password string to check => NEEDS TO BE THE DEFAULT DRUPAL 7 PASSWORD HASH.
* @return true if the candidate matches, false otherwise.
*/
public static boolean checkPassword(String candidate, String saltedEncryptedPassword) throws Exception {
if (candidate == null || saltedEncryptedPassword == null) {
return false;
}
String hash = password_crypt(candidate, saltedEncryptedPassword);
System.out.println("Expected value = " + saltedEncryptedPassword);
System.out.println("Calced value = " + hash);
System.out.println("Result Good? = " + saltedEncryptedPassword.equalsIgnoreCase(hash));
return saltedEncryptedPassword.equalsIgnoreCase(hash);
}
private static String password_crypt(String password, String passwordHash) throws Exception {
// The first 12 characters of an existing hash are its setting string.
passwordHash = passwordHash.substring(0, 12);
int count_log2 = password_get_count_log2(passwordHash);
String salt = passwordHash.substring(4, 12);
// Hashes must have an 8 character salt.
if (salt.length() != 8) {
return null;
}
int count = 1 << count_log2;
byte[] hash;
try {
hash = sha512(salt.concat(password));
do {
hash = sha512(joinBytes(hash, password.getBytes("UTF-8")));
} while (--count > 0);
} catch (Exception e) {
System.out.println("error " + e.toString());
return null;
}
String output = passwordHash + _password_base64_encode(hash, hash.length);
return (output.length() > 0) ? output.substring(0, DRUPAL_HASH_LENGTH) : null;
}
private static byte[] joinBytes(byte[] a, byte[] b) {
byte[] combined = new byte[a.length + b.length];
System.arraycopy(a, 0, combined, 0, a.length);
System.arraycopy(b, 0, combined, a.length, b.length);
return combined;
}
private static String _password_base64_encode(byte[] input, int count) throws Exception {
StringBuffer output = new StringBuffer();
int i = 0;
CharSequence itoa64 = _password_itoa64();
do {
long value = SignedByteToUnsignedLong(input[i++]);
output.append(itoa64.charAt((int) value & 0x3f));
if (i < count) {
value |= SignedByteToUnsignedLong(input[i]) << 8;
}
output.append(itoa64.charAt((int) (value >> 6) & 0x3f));
if (i++ >= count) {
break;
}
if (i < count) {
value |= SignedByteToUnsignedLong(input[i]) << 16;
}
output.append(itoa64.charAt((int) (value >> 12) & 0x3f));
if (i++ >= count) {
break;
}
output.append(itoa64.charAt((int) (value >> 18) & 0x3f));
} while (i < count);
return output.toString();
}
public static long SignedByteToUnsignedLong(byte b) {
return b & 0xFF;
}
}
这篇关于Drupal的密码的Java autentication的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！