add support for an incorrect KDF that snuck into Riot 1.0

1 files changed, 16 insertions, 0 deletions

diff --git a/javascript/olm_sas.js b/javascript/olm_sas.js
index d5044ce..a2f82ee 100644
--- a/javascript/olm_sas.js
+++ b/javascript/olm_sas.js
@@ -75,3 +75,19 @@ SAS.prototype['calculate_mac'] = restore_stack(function(input, info) {
     );
     return Pointer_stringify(mac_buffer);
 });
+
+SAS.prototype['calculate_mac_long_kdf'] = restore_stack(function(input, info) {
+    var input_array = array_from_string(input);
+    var input_buffer = stack(input_array);
+    var info_array = array_from_string(info);
+    var info_buffer = stack(info_array);
+    var mac_length = sas_method(Module['_olm_sas_mac_length'])(this.ptr);
+    var mac_buffer = stack(mac_length + NULL_BYTE_PADDING_LENGTH);
+    sas_method(Module['_olm_sas_calculate_mac_long_kdf'])(
+        this.ptr,
+        input_buffer, input_array.length,
+        info_buffer, info_array.length,
+        mac_buffer, mac_length
+    );
+    return Pointer_stringify(mac_buffer);
+});