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-rw-r--r--src/se/leap/leapclient/ConfigHelper.java2
-rw-r--r--src/se/leap/leapclient/ProviderAPI.java110
2 files changed, 51 insertions, 61 deletions
diff --git a/src/se/leap/leapclient/ConfigHelper.java b/src/se/leap/leapclient/ConfigHelper.java
index 41364e9..b263c53 100644
--- a/src/se/leap/leapclient/ConfigHelper.java
+++ b/src/se/leap/leapclient/ConfigHelper.java
@@ -37,7 +37,7 @@ public class ConfigHelper {
final public static String eip_service_api_path = "/config/eip-service.json";
final public static String NG_1024 =
- "EEAF0AB9ADB38DD69C33F80AFA8FC5E86072618775FF3C0B9EA2314C9C256576D674DF7496EA81D3383B4813D692C6E0E0D5D8E250B98BE48E495C1D6089DAD15DC7D7B46154D6B6CE8EF4AD69B15D4982559B297BCF1885C529F566660E57EC68EDBC3C05726CC02FD4CBF4976EAA9AFD5138FE8376435B9FC61D2FC0EB06E3";
+ "eeaf0ab9adb38dd69c33f80afa8fc5e86072618775ff3c0b9ea2314c9c256576d674df7496ea81d3383b4813d692c6e0e0d5d8e250b98be48e495c1d6089dad15dc7d7b46154d6b6ce8ef4ad69b15d4982559b297bcf1885c529f566660e57ec68edbc3c05726cc02fd4cbf4976eaa9afd5138fe8376435b9fc61d2fc0eb06e3";
final public static BigInteger g = BigInteger.valueOf(2);
final public static int CUSTOM_PROVIDER_ADDED = 0;
diff --git a/src/se/leap/leapclient/ProviderAPI.java b/src/se/leap/leapclient/ProviderAPI.java
index 41612d1..e2af08e 100644
--- a/src/se/leap/leapclient/ProviderAPI.java
+++ b/src/se/leap/leapclient/ProviderAPI.java
@@ -21,6 +21,7 @@ import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
+import org.apache.http.client.methods.HttpPut;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
@@ -123,7 +124,7 @@ public class ProviderAPI extends IntentService {
verifier_generator.init(ng_1024, ConfigHelper.g, new SHA256Digest());
BigInteger verifier = verifier_generator.generateVerifier(salt_in_bytes, username.getBytes(), password.getBytes());
- return sendRegisterMessage(authentication_server, salt.toString(16), verifier.toString(), username);
+ return sendRegisterMessage(authentication_server, salt.toString(16), verifier.toString(16), username);
}
private boolean sendRegisterMessage(String server_url, String password_salt, String password_verifier, String login) {
@@ -137,10 +138,11 @@ public class ProviderAPI extends IntentService {
HttpEntity responseEntity = getResponse.getEntity();
String plain_response = new Scanner(responseEntity.getContent()).useDelimiter("\\A").next();
JSONObject json_response = new JSONObject(plain_response);
- if(!json_response.getString("errors").isEmpty()) {
+ if(!json_response.isNull("errors") || json_response.has("errors")) {
return false;
}
- else if(json_response.getString("password_salt").equalsIgnoreCase(password_salt) && json_response.getString("login").equalsIgnoreCase(login))
+ //else if(json_response.getString("password_salt").equalsIgnoreCase(password_salt) && json_response.getString("login").equalsIgnoreCase(login))
+ else if(json_response.getBoolean("ok") && json_response.getString("login").equalsIgnoreCase(login))
return true;
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
@@ -163,30 +165,31 @@ public class ProviderAPI extends IntentService {
String username = (String) task.get(ConfigHelper.username_key);
String password = (String) task.get(ConfigHelper.password_key);
String authentication_server = (String) task.get(ConfigHelper.srp_server_url_key);
+
SRP6Client srp_client = new SRP6Client();
- srp_client.init(new BigInteger(ConfigHelper.NG_1024, 16), ConfigHelper.g, new SHA256Digest(), new SecureRandom());
- // Receive salt from server
- Random random_number_generator = new Random();
- BigInteger ng_1024 = new BigInteger(ConfigHelper.NG_1024, 16);
- byte[] salt_in_bytes = ng_1024.probablePrime(1024, null).toByteArray();
- //int salt = random_number_generator.nextInt(Integer.parseInt(ConfigHelper.NG_1024, 16));
- //byte[] salt_in_bytes = ByteBuffer.allocate(4).putInt(salt).array();
- BigInteger clientA = srp_client.generateClientCredentials(salt_in_bytes, username.getBytes(), password.getBytes());
- //Send A to the server. Doing a http response with cookies?
- //Receive server generated serverB
+ BigInteger n = new BigInteger(ConfigHelper.NG_1024, 16);
+ srp_client.init(n, ConfigHelper.g, new SHA256Digest(), new SecureRandom());
+
+ BigInteger salt = BigInteger.probablePrime(1024, null);
+ BigInteger clientA = srp_client.generateClientCredentials(salt.toByteArray(), username.getBytes(), password.getBytes());
try {
BigInteger serverB = sendAToSRPServer(authentication_server, username, clientA);
if(serverB == BigInteger.ZERO)
return false; // TODO Show error: error trying to start authentication with provider
+
BigInteger s = srp_client.calculateSecret(serverB);
- MessageDigest digest_of_S = MessageDigest.getInstance("SHA-256");
- digest_of_S.update(s.toByteArray(), 0, s.toByteArray().length);
- BigInteger k = new BigInteger(digest_of_S.digest());
- BigInteger m1 = generateM1(k, clientA, serverB, username);
- BigInteger m2 = sendM1ToSRPServer(authentication_server, "M1", m1);
+
+ BigInteger k = new BigInteger(1, MessageDigest.getInstance("SHA-256").digest(s.toByteArray()));
+
+ BigInteger m1 = generateM1(k, salt, clientA, serverB, username);
+
+ BigInteger m2 = sendM1ToSRPServer(authentication_server, username, m1);
+
if(m2 == BigInteger.ZERO)
return false; // TODO Show error: error in M1
+
boolean verified = verifyM2(m2, k, clientA, serverB, username);
+
return verified; // TODO If false, Username or password are not correct -> Show a warning and get back to login fragment
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
@@ -218,30 +221,35 @@ public class ProviderAPI extends IntentService {
}
}
- private BigInteger generateM1(BigInteger K, BigInteger clientA, BigInteger serverB, String username) throws NoSuchAlgorithmException {
- /* https://github.com/leapcode/srp_js/blob/master/src/srp_session.js
- var hashN = SHA256(hex2a(N.toString(16)))
- var hashG = SHA256(hex2a(g.toString(16)))
- var hexString = hexXor(hashN, hashG);
- hexString += SHA256(I);
- hexString += salt;
- hexString += Astr;
- hexString += Bstr;
- hexString += K
- M = SHA256(hex2a(hexString));
- //M2 = H(A, M, K)
- M2 = SHA256(hex2a(Astr + M + K));
- */
+ private BigInteger sendAToSRPServer(String server_url, String username, BigInteger clientA) throws ClientProtocolException, IOException, NumberFormatException, JSONException {
+ DefaultHttpClient client = new LeapHttpClient(getApplicationContext());
+ String parameter_chain = "A" + "=" + clientA.toString(16) + "&" + "login" + "=" + username;
+ HttpPost post = new HttpPost(server_url + "/sessions.json" + "?" + parameter_chain);
+
+ HttpResponse getResponse = client.execute(post);
+ HttpEntity responseEntity = getResponse.getEntity();
+ String plain_response = new Scanner(responseEntity.getContent()).useDelimiter("\\A").next();
+ JSONObject json_response = new JSONObject(plain_response);
+ if(!json_response.isNull("errors") || json_response.has("errors")) {
+ return BigInteger.ZERO;
+ }
+ List<Cookie> cookies = client.getCookieStore().getCookies();
+ if(!cookies.isEmpty()) {
+ String session_id = cookies.get(0).getValue();
+ }
+ return new BigInteger(json_response.getString("B"), 16);
+ }
+
+ public BigInteger generateM1(BigInteger K, BigInteger salt, BigInteger clientA, BigInteger serverB, String username) throws NoSuchAlgorithmException {
String digest_of_N_as_string = new BigInteger(MessageDigest.getInstance("SHA-256").digest(ConfigHelper.NG_1024.getBytes())).toString(16);
-
+
String digest_of_G_as_string = new BigInteger(1, MessageDigest.getInstance("SHA-256").digest(ConfigHelper.g.toString(16).getBytes())).toString(16);
- //String digest_of_G_as_string = new BigInteger(MessageDigest.getInstance("SHA-256").digest(ConfigHelper.g.toByteArray())).toString(16);
-
+
String xor_n_and_g = hexXor(digest_of_N_as_string, digest_of_G_as_string);
-
+
String digest_of_username_as_string = new BigInteger(MessageDigest.getInstance("SHA-256").digest(username.getBytes())).toString(16);
- String m1_source_string = xor_n_and_g + digest_of_username_as_string + clientA.toString(16) + serverB.toString(16) + K.toString(16);
+ String m1_source_string = xor_n_and_g + digest_of_username_as_string + salt.toString(16) + clientA.toString(16) + serverB.toString(16) + K.toString(16);
return new BigInteger(1, MessageDigest.getInstance("SHA-256").digest(m1_source_string.getBytes()));
}
@@ -318,33 +326,15 @@ public class ProviderAPI extends IntentService {
}
buffer.append(Integer.toHexString(intValue) + "");
}
- return buffer.toString().toUpperCase();
+ return buffer.toString();
}
- private BigInteger sendAToSRPServer(String server_url, String username, BigInteger clientA) throws ClientProtocolException, IOException, NumberFormatException, JSONException {
+ private BigInteger sendM1ToSRPServer(String server_url, String username, BigInteger m1) throws ClientProtocolException, IOException, JSONException {
DefaultHttpClient client = new LeapHttpClient(getApplicationContext());
- String parameter_chain = "A" + "=" + clientA.toString() + "&" + "login" + "=" + username;
- HttpPost post = new HttpPost(server_url + "/sessions.json" + "?" + parameter_chain);
-
- HttpResponse getResponse = client.execute(post);
- HttpEntity responseEntity = getResponse.getEntity();
- String plain_response = new Scanner(responseEntity.getContent()).useDelimiter("\\A").next();
- JSONObject json_response = new JSONObject(plain_response);
- if(!json_response.isNull("errors")) {
- return BigInteger.ZERO;
- }
- List<Cookie> cookies = client.getCookieStore().getCookies();
- if(!cookies.isEmpty()) {
- String session_id = cookies.get(0).getValue();
- }
- return new BigInteger(json_response.getString("B"), 16);
- }
- private BigInteger sendM1ToSRPServer(String server_url, String parameter_name, BigInteger parameter) throws ClientProtocolException, IOException, JSONException {
- DefaultHttpClient client = new LeapHttpClient(getApplicationContext());
- String parameter_chain = parameter_name + "=" + parameter.toString();
- HttpPost post = new HttpPost(server_url + "/sessions.json" + "?" + parameter_chain);
+ String parameter_chain = "client_auth" + "=" + m1.toString(16);
+ HttpPut put = new HttpPut(server_url + "/sessions/" + username +".json" + "?" + parameter_chain);
- HttpResponse getResponse = client.execute(post);
+ HttpResponse getResponse = client.execute(put);
HttpEntity responseEntity = getResponse.getEntity();
String plain_response = new Scanner(responseEntity.getContent()).useDelimiter("\\A").next();
JSONObject json_response = new JSONObject(plain_response);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 18:38:27 +0000