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-rw-r--r--src/main/java/eu/siacs/conversations/crypto/sasl/ScramSha1.java14
1 files changed, 9 insertions, 5 deletions
diff --git a/src/main/java/eu/siacs/conversations/crypto/sasl/ScramSha1.java b/src/main/java/eu/siacs/conversations/crypto/sasl/ScramSha1.java
index 3a05446c..f40eec55 100644
--- a/src/main/java/eu/siacs/conversations/crypto/sasl/ScramSha1.java
+++ b/src/main/java/eu/siacs/conversations/crypto/sasl/ScramSha1.java
@@ -185,13 +185,17 @@ public class ScramSha1 extends SaslMechanism {
state = State.RESPONSE_SENT;
return Base64.encodeToString(clientFinalMessage.getBytes(), Base64.NO_WRAP);
case RESPONSE_SENT:
- final String clientCalculatedServerFinalMessage = "v=" +
- Base64.encodeToString(serverSignature, Base64.NO_WRAP);
- if (challenge == null || !clientCalculatedServerFinalMessage.equals(new String(Base64.decode(challenge, Base64.DEFAULT)))) {
+ try {
+ final String clientCalculatedServerFinalMessage = "v=" +
+ Base64.encodeToString(serverSignature, Base64.NO_WRAP);
+ if (!clientCalculatedServerFinalMessage.equals(new String(Base64.decode(challenge, Base64.DEFAULT)))) {
+ throw new Exception();
+ };
+ state = State.VALID_SERVER_RESPONSE;
+ return "";
+ } catch(Exception e) {
throw new AuthenticationException("Server final message does not match calculated final message");
}
- state = State.VALID_SERVER_RESPONSE;
- return "";
default:
throw new InvalidStateException(state);
}