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authorChristian Grothoff <christian@grothoff.org>2022-02-14 23:02:25 +0100
committerChristian Grothoff <christian@grothoff.org>2022-02-14 23:02:25 +0100
commitbd77bcb52dcad4b761f3db0acaa6b71b112a31c2 (patch)
treef519ebc30bf0917d9f2e91667a20beac71284586 /src/exchange/taler-exchange-httpd_withdraw.c
parentf4f40a31efd3028dec36c0b84a49617926b5f9c3 (diff)
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-towards fixing the protocol
Diffstat (limited to 'src/exchange/taler-exchange-httpd_withdraw.c')
-rw-r--r--src/exchange/taler-exchange-httpd_withdraw.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/exchange/taler-exchange-httpd_withdraw.c b/src/exchange/taler-exchange-httpd_withdraw.c
index 7572f85d2..3799187c1 100644
--- a/src/exchange/taler-exchange-httpd_withdraw.c
+++ b/src/exchange/taler-exchange-httpd_withdraw.c
@@ -535,6 +535,10 @@ TEH_handler_withdraw (struct TEH_RequestContext *rc,
/* Clean up and send back final response */
GNUNET_JSON_parse_free (spec);
+ // FIXME: in CS-case, we MUST re-transmit any _existing_ signature
+ // (if database had a record matching the nonce)
+ // instead of sending a 'fresh' one back (as c0/c1 may differ in
+ // a client attack!
{
MHD_RESULT ret;