diff options
Diffstat (limited to 'src/se/leap/leapclient/LeapSRPSession.java')
| -rw-r--r-- | src/se/leap/leapclient/LeapSRPSession.java | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/se/leap/leapclient/LeapSRPSession.java b/src/se/leap/leapclient/LeapSRPSession.java index 0a8e735f..beb286da 100644 --- a/src/se/leap/leapclient/LeapSRPSession.java +++ b/src/se/leap/leapclient/LeapSRPSession.java @@ -9,6 +9,14 @@ import java.util.Arrays; import org.jboss.security.Util; import org.jboss.security.srp.SRPParameters; +/** + * Implements all SRP algorithm logic. + * + * It's derived from JBoss implementation, with adjustments to make it work with LEAP platform. + * + * @author parmegv + * + */ public class LeapSRPSession { private SRPParameters params; @@ -133,7 +141,14 @@ public class LeapSRPSession { return v; } - public byte[] xor(byte[] b1, byte[] b2, int length) + /** + * Calculates the trimmed xor from two BigInteger numbers + * @param b1 the positive source to build first BigInteger + * @param b2 the positive source to build second BigInteger + * @param length + * @return + */ + public byte[] xor(byte[] b1, byte[] b2) { //TODO Check if length matters in the order, when b2 is smaller than b1 or viceversa byte[] xor_digest = new BigInteger(1, b1).xor(new BigInteger(1, b2)).toByteArray(); @@ -185,7 +200,7 @@ public class LeapSRPSession { byte[] digest_of_g = newDigest().digest(params.g); // clientHash = H(N) xor H(g) - byte[] xor_digest = xor(digest_of_n, digest_of_g, digest_of_g.length); + byte[] xor_digest = xor(digest_of_n, digest_of_g); clientHash.update(xor_digest); // clientHash = H(N) xor H(g) | H(U) |