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Diffstat (limited to 'xcode/OLMKit/OLMAccount.m')
-rw-r--r--xcode/OLMKit/OLMAccount.m19
1 files changed, 19 insertions, 0 deletions
diff --git a/xcode/OLMKit/OLMAccount.m b/xcode/OLMKit/OLMAccount.m
index 4561a37..77fddac 100644
--- a/xcode/OLMKit/OLMAccount.m
+++ b/xcode/OLMKit/OLMAccount.m
@@ -92,6 +92,25 @@
return keysDictionary;
}
+- (NSString *)signMessage:(NSData *)messageData {
+ size_t signatureLength = olm_account_signature_length(_account);
+ uint8_t *signatureBytes = malloc(signatureLength);
+ if (!signatureBytes) {
+ return nil;
+ }
+
+ size_t result = olm_account_sign(_account, messageData.bytes, messageData.length, signatureBytes, signatureLength);
+ if (result == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"error signing message: %s", error);
+ free(signatureBytes);
+ return nil;
+ }
+
+ NSData *signatureData = [NSData dataWithBytesNoCopy:signatureBytes length:signatureLength freeWhenDone:YES];
+ return [[NSString alloc] initWithData:signatureData encoding:NSUTF8StringEncoding];
+}
+
- (NSDictionary*) oneTimeKeys {
size_t otkLength = olm_account_one_time_keys_length(_account);
uint8_t *otkBytes = malloc(otkLength);