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-rw-r--r--src/se/leap/leapclient/LeapSRPSession.java27
1 files changed, 18 insertions, 9 deletions
diff --git a/src/se/leap/leapclient/LeapSRPSession.java b/src/se/leap/leapclient/LeapSRPSession.java
index 3dacce9c..c0d2d0f9 100644
--- a/src/se/leap/leapclient/LeapSRPSession.java
+++ b/src/se/leap/leapclient/LeapSRPSession.java
@@ -90,15 +90,18 @@ public class LeapSRPSession {
byte[] hg = newDigest().digest(params.g);
// clientHash = H(N) xor H(g)
byte[] hxg = xor(hn, hg, hg.length);
- //hxg = Util.trim(hxg);
- clientHash.update(hxg);
+ String hxg_string = new BigInteger(1, hxg).toString(16);
+ hxg = Util.trim(hxg);
+ clientHash.update(hxg); // OK
// clientHash = H(N) xor H(g) | H(U)
byte[] username_bytes = username.getBytes();
byte[] username_digest = newDigest().digest(username_bytes);
- clientHash.update(username_digest);
+ String username_digest_string = new BigInteger(1, username_digest).toString(16);
+ clientHash.update(username_digest); // OK
// clientHash = H(N) xor H(g) | H(U) | s
byte[] salt_bytes = params.s;
- clientHash.update(salt_bytes);
+ String salt_string = new BigInteger(1, salt_bytes).toString(16);
+ clientHash.update(salt_bytes); // OK
K = null;
}
@@ -123,9 +126,10 @@ public class LeapSRPSession {
}
A = g.modPow(a, N);
Abytes = A.toByteArray();
- //Abytes = Util.trim(Abytes);
+ String Abytes_string = new BigInteger(1, Abytes).toString(16);
+ Abytes = Util.trim(Abytes);
// clientHash = H(N) xor H(g) | H(U) | A
- clientHash.update(Abytes);
+ clientHash.update(Abytes); // Begins with 0: second case
// serverHash = A
serverHash.update(Abytes);
}
@@ -134,16 +138,21 @@ public class LeapSRPSession {
public byte[] response(byte[] Bbytes) throws NoSuchAlgorithmException {
// clientHash = H(N) xor H(g) | H(U) | s | A | B
- //Bbytes = Util.trim(Bbytes);
- clientHash.update(Bbytes);
+ Bbytes = Util.trim(Bbytes); // Begins with 0: first case, second case
+ String Abytes_string = new BigInteger(1, Bbytes).toString(16);
+ clientHash.update(Bbytes); // OK
// Calculate S = (B - kg^x) ^ (a + u * x) % N
BigInteger S = calculateS(Bbytes);
byte[] S_bytes = S.toByteArray();
- //S_bytes = Util.trim(S_bytes);
+ S_bytes = Util.trim(S_bytes); // Begins with 0: first case
+ String S_bytes_string = new BigInteger(1, S_bytes).toString(16);
// K = SessionHash(S)
String hash_algorithm = params.hashAlgorithm;
MessageDigest sessionDigest = MessageDigest.getInstance(hash_algorithm);
K = sessionDigest.digest(S_bytes);
+ //K = Util.trim(K);
+ String K_bytes_string = new BigInteger(1, K).toString(16);
+
// clientHash = H(N) xor H(g) | H(U) | A | B | K
clientHash.update(K);
byte[] M1 = clientHash.digest();