diff --git a/g10/parse-packet.c b/g10/parse-packet.c index 5fea1ac43..e0fe9c0c8 100644 --- a/g10/parse-packet.c +++ b/g10/parse-packet.c @@ -2189,8 +2189,21 @@ parse_signature (IOBUF inp, int pkttype, unsigned long pktlen, && opt.verbose && !glo_ctrl.silence_parse_warnings) log_info ("signature packet without timestamp\n"); - p = parse_sig_subpkt2 (sig, SIGSUBPKT_ISSUER); - if (p) + /* Set the key id. We first try the issuer fingerprint and if + * this is not found fallback to the issuer. Note that + * only the issuer packet is also searched in the unhashed area. */ + p = parse_sig_subpkt (sig->hashed, SIGSUBPKT_ISSUER_FPR, &len); + if (p && len == 21 && p[0] == 4) + { + sig->keyid[0] = buf32_to_u32 (p + 1 + 12); + sig->keyid[1] = buf32_to_u32 (p + 1 + 16); + } + else if (p && len == 33 && p[0] == 5) + { + sig->keyid[0] = buf32_to_u32 (p + 1 ); + sig->keyid[1] = buf32_to_u32 (p + 1 + 4); + } + else if ((p = parse_sig_subpkt2 (sig, SIGSUBPKT_ISSUER))) { sig->keyid[0] = buf32_to_u32 (p); sig->keyid[1] = buf32_to_u32 (p + 4);