+ SHA_Init(&ssh->exhash);
+ sha_string(&ssh->exhash, ssh->v_c, strlen(ssh->v_c));
+ sha_string(&ssh->exhash, ssh->v_s, strlen(ssh->v_s));
+ sha_string(&ssh->exhash, s->our_kexinit, s->our_kexinitlen);
+ sfree(s->our_kexinit);
+ if (pktin->length > 5)
+ sha_string(&ssh->exhash, pktin->data + 5, pktin->length - 5);
+
+