X-Git-Url: https://www.tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fsptps.c;h=e9ce94aef85ef361a706de4322a1117d5475160e;hb=ddd0cd47bc0bb3478b7d250192248a1e3aa2a243;hp=3fbd8540e88dccc27256718dfc5c539cb6841aaa;hpb=7bf61575fe1009ecb93b3f6b8f5145525874e470;p=tinc

diff --git a/src/sptps.c b/src/sptps.c
index 3fbd8540..e9ce94ae 100644
--- a/src/sptps.c
+++ b/src/sptps.c
@@ -431,13 +431,12 @@ bool sptps_verify_datagram(sptps_t *s, const char *data, size_t len) {
 	uint32_t seqno;
 	memcpy(&seqno, data, 4);
 	seqno = ntohl(seqno);
+	if (!sptps_check_seqno(s, seqno, false))
+		return false;
 
 	char buffer[len];
 	size_t outlen;
-	if(!chacha_poly1305_decrypt(s->incipher, seqno, data + 4, len - 4, buffer, &outlen))
-		return false;
-
-	return sptps_check_seqno(s, seqno, false);
+	return chacha_poly1305_decrypt(s->incipher, seqno, data + 4, len - 4, buffer, &outlen);
 }
 
 // Receive incoming data, datagram version.