X-Git-Url: https://code.wpia.club/?a=blobdiff_plain;ds=sidebyside;f=src%2Forg%2Fcacert%2Fgigi%2Futil%2FPasswordHash.java;h=ed0d4f3c251903a0400552e1db0f6b2a1e75b20e;hb=e04e99de1af984634675056004cd031c0b526505;hp=1baf13700729b2fb9330dcced7f2dbf32db4e31d;hpb=d0b9305527ebb160decee391df1d189988b09655;p=gigi.git

diff --git a/src/org/cacert/gigi/util/PasswordHash.java b/src/org/cacert/gigi/util/PasswordHash.java
index 1baf1370..ed0d4f3c 100644
--- a/src/org/cacert/gigi/util/PasswordHash.java
+++ b/src/org/cacert/gigi/util/PasswordHash.java
@@ -1,26 +1,69 @@
 package org.cacert.gigi.util;
 
+import java.io.UnsupportedEncodingException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 
+import com.lambdaworks.crypto.SCryptUtil;
+
 public class PasswordHash {
-	public static boolean verifyHash(String password, String hash) {
-		String newhash = sha1(password);
-		return newhash.equals(hash);
-	}
 
-	private static String sha1(String password) {
-		try {
-			MessageDigest md = MessageDigest.getInstance("SHA1");
-			byte[] digest = md.digest(password.getBytes());
-			StringBuffer res = new StringBuffer(digest.length * 2);
-			for (int i = 0; i < digest.length; i++) {
-				res.append(Integer.toHexString((digest[i] & 0xF0) >> 4));
-				res.append(Integer.toHexString(digest[i] & 0xF));
-			}
-			return res.toString();
-		} catch (NoSuchAlgorithmException e) {
-			throw new Error(e);
-		}
-	}
+    /**
+     * Verifies a password hash.
+     * 
+     * @param password
+     *            The password that should result in the given hash.
+     * @param hash
+     *            The hash to verify the password against.
+     * @return <ul>
+     *         <li><code>null</code>, if the password was valid</li>
+     *         <li><code>hash</code>, if the password is valid and the hash
+     *         doesn't need to be updated</li>
+     *         <li>a new hash, if the password is valid but the hash in the
+     *         database needs to be updated.</li>
+     *         </ul>
+     */
+    public static String verifyHash(String password, String hash) {
+        if (hash.contains("$")) {
+            if (SCryptUtil.check(password, hash)) {
+                return hash;
+            } else {
+                return null;
+            }
+        }
+        String newhash = sha1(password);
+        boolean match = true;
+        if (newhash.length() != hash.length()) {
+            match = false;
+        }
+        for (int i = 0; i < newhash.length(); i++) {
+            match &= newhash.charAt(i) == hash.charAt(i);
+        }
+        if (match) {
+            return hash(password);
+        } else {
+            return null;
+        }
+    }
+
+    private static String sha1(String password) {
+        try {
+            MessageDigest md = MessageDigest.getInstance("SHA1");
+            byte[] digest = md.digest(password.getBytes("UTF-8"));
+            StringBuffer res = new StringBuffer(digest.length * 2);
+            for (int i = 0; i < digest.length; i++) {
+                res.append(Integer.toHexString((digest[i] & 0xF0) >> 4));
+                res.append(Integer.toHexString(digest[i] & 0xF));
+            }
+            return res.toString();
+        } catch (NoSuchAlgorithmException e) {
+            throw new Error(e);
+        } catch (UnsupportedEncodingException e) {
+            throw new Error(e);
+        }
+    }
+
+    public static String hash(String password) {
+        return SCryptUtil.scrypt(password, 1 << 14, 8, 1);
+    }
 }