Fix byte-order dependency in calculation of initial challenge

Fixes: #7977
Signed-off-by: Dan Mick <dan.mick@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>

diff --git a/src/auth/cephx/CephxProtocol.cc b/src/auth/cephx/CephxProtocol.cc
index 5c17dea712ac2dfbf2a32171f05e40bb592e12ee..6956f453fb747c3c2909b35e06b99eb24108964b 100644 (file)
--- a/src/auth/cephx/CephxProtocol.cc
+++ b/src/auth/cephx/CephxProtocol.cc
@@ -39,7 +39,7 @@ void cephx_calc_client_server_challenge(CephContext *cct, CryptoKey& secret, uin
   uint64_t k = 0;
   const uint64_t *p = (const uint64_t *)enc.c_str();
   for (int pos = 0; pos + sizeof(k) <= enc.length(); pos+=sizeof(k), p++)
-    k ^= *p;
+    k ^= mswab64(*p);
   *key = k;
 }