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authorParménides GV <parmegv@sdf.org>2014-05-07 13:55:46 +0200
committerParménides GV <parmegv@sdf.org>2014-05-07 13:55:46 +0200
commit69c299b9c891d92ff7e5bc87e32b9acb10901b91 (patch)
treeed99f4c1cd198209331ef374e834f5e388f4fab6 /app/src/main/java/se/leap
parent230ae10fb3a0c08cbd16e91fce041133bdf5ae8e (diff)
Signup protocol coded. UI next.
Diffstat (limited to 'app/src/main/java/se/leap')
-rw-r--r--app/src/main/java/se/leap/bitmaskclient/LeapSRPSession.java34
1 files changed, 16 insertions, 18 deletions
diff --git a/app/src/main/java/se/leap/bitmaskclient/LeapSRPSession.java b/app/src/main/java/se/leap/bitmaskclient/LeapSRPSession.java
index 8d95cdb8..f8279b64 100644
--- a/app/src/main/java/se/leap/bitmaskclient/LeapSRPSession.java
+++ b/app/src/main/java/se/leap/bitmaskclient/LeapSRPSession.java
@@ -16,13 +16,13 @@
*/
package se.leap.bitmaskclient;
+
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Arrays;
-
import org.jboss.security.srp.SRPParameters;
/**
@@ -42,6 +42,7 @@ public class LeapSRPSession {
final public static String M2 = "M2";
final public static String TOKEN = "token";
final public static String AUTHORIZATION_HEADER= "Authorization";
+ final public static String TAG= "Leap SRP session class tag";
private SRPParameters params;
private String username;
@@ -155,15 +156,11 @@ public class LeapSRPSession {
return x_digest_bytes;
}
- public byte[] calculateSaltedPassword() {
+ public byte[] calculateNewSalt() {
try {
- BigInteger salt = new BigInteger(128, SecureRandom.getInstance("SHA1PRNG"));
- MessageDigest salted_password = newDigest();
- salted_password.update(salt.toByteArray());
- salted_password.update(password.getBytes());
- return salted_password.digest();
- } catch (NoSuchAlgorithmException e) {
- // TODO Auto-generated catch block
+ BigInteger salt = new BigInteger(64, SecureRandom.getInstance("SHA1PRNG"));
+ return salt.toByteArray();
+ } catch(NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
@@ -173,11 +170,9 @@ public class LeapSRPSession {
* @return the value of V
*/
public BigInteger calculateV(String username, String password, byte[] salt) {
- String k_string = "bf66c44a428916cad64aa7c679f3fd897ad4c375e9bbb4cbf2f5de241d618ef0";
- BigInteger k = new BigInteger(k_string, 16);
byte[] x_bytes = calculatePasswordHash(username, password, ConfigHelper.trim(salt));
x = new BigInteger(1, x_bytes);
- BigInteger v = k.multiply(g.modPow(x, N)); // g^x % N
+ BigInteger v = g.modPow(x, N); // g^x % N
return v;
}
@@ -224,13 +219,11 @@ public class LeapSRPSession {
* @return the parameter M1
* @throws NoSuchAlgorithmException
*/
- public byte[] response(byte[] salt_bytes, byte[] Bbytes) throws NoSuchAlgorithmException {
+ public byte[] response(byte[] salt_bytes, byte[] Bbytes) throws NoSuchAlgorithmException {
// Calculate x = H(s | H(U | ':' | password))
byte[] M1 = null;
if(new BigInteger(1, Bbytes).mod(new BigInteger(1, N_bytes)) != BigInteger.ZERO) {
- // Calculate v = kg^x mod N
- this.v = calculateV(username, password, salt_bytes);
-
+ this.v = calculateV(username, password, salt_bytes);
// H(N)
byte[] digest_of_n = newDigest().digest(N_bytes);
@@ -294,8 +287,9 @@ public class LeapSRPSession {
BigInteger B = new BigInteger(1, Bbytes);
BigInteger u = new BigInteger(1, u_bytes);
-
- BigInteger B_minus_v = B.subtract(v);
+ String k_string = "bf66c44a428916cad64aa7c679f3fd897ad4c375e9bbb4cbf2f5de241d618ef0";
+ BigInteger k = new BigInteger(k_string, 16);
+ BigInteger B_minus_v = B.subtract(k.multiply(v));
BigInteger a_ux = a.add(u.multiply(x));
BigInteger S = B_minus_v.modPow(a_ux, N);
return S;
@@ -349,4 +343,8 @@ public class LeapSRPSession {
}
return md;
}
+
+ public byte[] getK() {
+ return K;
+ }
}