Fix base64 decoding of Ed25519 keys.

diff --git a/src/invitation.c b/src/invitation.c
index 7fb96da..a6996cc 100644 (file)
--- a/src/invitation.c
+++ b/src/invitation.c
@@ -906,7 +906,7 @@ int cmd_join(int argc, char *argv[]) {
        if(!port || !*port)
                port = "655";
 
-       if(!b64decode(slash, hash, 18) || !b64decode(slash + 24, cookie, 18))
+       if(!b64decode(slash, hash, 24) || !b64decode(slash + 24, cookie, 24))
                goto invalid;
 
        // Generate a throw-away key for the invitation.

diff --git a/src/utils.c b/src/utils.c
index 594c91a..0d7bc02 100644 (file)
--- a/src/utils.c
+++ b/src/utils.c
@@ -75,7 +75,7 @@ int b64decode(const char *src, void *dst, int length) {
        uint32_t triplet = 0;
        unsigned char *udst = (unsigned char *)dst;
 
-       for(i = 0; i < length / 3 * 4 && src[i]; i++) {
+       for(i = 0; i < length && src[i]; i++) {
                triplet |= base64_decode[src[i] & 0xff] << (6 * (i & 3));
                if((i & 3) == 3) {
                        if(triplet & 0xff000000U)