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SUSE:SLE-15-SP4:GA
gpg2.15272
gnupg-2.0.18-files-are-digests.patch
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File gnupg-2.0.18-files-are-digests.patch of Package gpg2.15272
--- g10/gpg.c | 4 +++ g10/options.h | 1 g10/sign.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++------ 3 files changed, 67 insertions(+), 6 deletions(-) Index: gnupg-2.1.23/g10/gpg.c =================================================================== --- gnupg-2.1.23.orig/g10/gpg.c 2017-08-09 15:46:17.000000000 +0200 +++ gnupg-2.1.23/g10/gpg.c 2017-08-10 16:21:26.692847431 +0200 @@ -380,6 +380,7 @@ enum cmd_and_opt_values oTTYtype, oLCctype, oLCmessages, + oFilesAreDigests, oXauthority, oGroup, oUnGroup, @@ -829,6 +830,7 @@ static ARGPARSE_OPTS opts[] = { ARGPARSE_s_s (oWeakDigest, "weak-digest","@"), ARGPARSE_s_n (oUnwrap, "unwrap", "@"), ARGPARSE_s_n (oOnlySignTextIDs, "only-sign-text-ids", "@"), + ARGPARSE_s_n (oFilesAreDigests, "files-are-digests", "@"), /* Aliases. I constantly mistype these, and assume other people do as well. */ @@ -2388,6 +2390,7 @@ main (int argc, char **argv) opt.def_cert_expire = "0"; gnupg_set_homedir (NULL); opt.passphrase_repeat = 1; + opt.files_are_digests=0; opt.emit_version = 0; opt.weak_digests = NULL; @@ -2952,6 +2955,7 @@ main (int argc, char **argv) opt.verify_options&=~VERIFY_SHOW_PHOTOS; break; case oPhotoViewer: opt.photo_viewer = pargs.r.ret_str; break; + case oFilesAreDigests: opt.files_are_digests = 1; break; case oForceMDC: opt.force_mdc = 1; break; case oNoForceMDC: opt.force_mdc = 0; break; Index: gnupg-2.1.23/g10/options.h =================================================================== --- gnupg-2.1.23.orig/g10/options.h 2017-08-09 15:46:17.000000000 +0200 +++ gnupg-2.1.23/g10/options.h 2017-08-10 16:21:26.692847431 +0200 @@ -213,6 +213,7 @@ struct int no_auto_check_trustdb; int preserve_permissions; int no_homedir_creation; + int files_are_digests; struct groupitem *grouplist; int mangle_dos_filenames; int enable_progress_filter; Index: gnupg-2.1.23/g10/sign.c =================================================================== --- gnupg-2.1.23.orig/g10/sign.c 2017-07-28 19:39:06.000000000 +0200 +++ gnupg-2.1.23/g10/sign.c 2017-08-10 16:21:26.692847431 +0200 @@ -43,6 +43,8 @@ #include "../common/mbox-util.h" #include "../common/compliance.h" +#include "../common/host2net.h" + #ifdef HAVE_DOSISH_SYSTEM #define LF "\r\n" #else @@ -727,6 +729,8 @@ write_signature_packets (ctrl_t ctrl, if (duration || opt.sig_policy_url || opt.sig_notations || opt.sig_keyserver_url) sig->version = 4; + else if (opt.files_are_digests) + sig->version = 3; else sig->version = pk->version; @@ -750,8 +754,12 @@ write_signature_packets (ctrl_t ctrl, mk_notation_policy_etc (sig, NULL, pk); } + if (!opt.files_are_digests) { hash_sigversion_to_magic (md, sig); gcry_md_final (md); + } else if (sig->version >= 4) { + log_bug("files-are-digests doesn't work with v4 sigs\n"); + } rc = do_sign (ctrl, pk, sig, md, hash_for (pk), cache_nonce); gcry_md_close (md); @@ -813,6 +821,8 @@ sign_file (ctrl_t ctrl, strlist_t filena SK_LIST sk_rover = NULL; int multifile = 0; u32 duration=0; + int sigclass = 0x00; + u32 timestamp = 0; pfx = new_progress_context (); afx = new_armor_context (); @@ -830,7 +840,16 @@ sign_file (ctrl_t ctrl, strlist_t filena fname = NULL; if( fname && filenames->next && (!detached || encryptflag) ) - log_bug("multiple files can only be detached signed"); + log_bug("multiple files can only be detached signed\n"); + + if (opt.files_are_digests && (multifile || !fname)) + log_bug("files-are-digests only works with one file\n"); + if (opt.files_are_digests && !detached) + log_bug("files-are-digests can only write detached signatures\n"); + if (opt.files_are_digests && !opt.def_digest_algo) + log_bug("files-are-digests needs --digest-algo\n"); + if (opt.files_are_digests && opt.textmode) + log_bug("files-are-digests doesn't work with --textmode\n"); if(encryptflag==2 && (rc=setup_symkey(&efx.symkey_s2k,&efx.symkey_dek))) @@ -851,7 +870,7 @@ sign_file (ctrl_t ctrl, strlist_t filena goto leave; /* prepare iobufs */ - if( multifile ) /* have list of filenames */ + if( multifile || opt.files_are_digests) /* have list of filenames */ inp = NULL; /* we do it later */ else { inp = iobuf_open(fname); @@ -989,7 +1008,7 @@ sign_file (ctrl_t ctrl, strlist_t filena for (sk_rover = sk_list; sk_rover; sk_rover = sk_rover->next) gcry_md_enable (mfx.md, hash_for (sk_rover->pk)); - if( !multifile ) + if( !multifile && !opt.files_are_digests ) iobuf_push_filter( inp, md_filter, &mfx ); if( detached && !encryptflag) @@ -1044,6 +1063,8 @@ sign_file (ctrl_t ctrl, strlist_t filena write_status_begin_signing (mfx.md); + sigclass = opt.textmode && !outfile? 0x01 : 0x00; + /* Setup the inner packet. */ if( detached ) { if( multifile ) { @@ -1084,6 +1105,45 @@ sign_file (ctrl_t ctrl, strlist_t filena if( opt.verbose ) log_printf ("\n"); } + else if (opt.files_are_digests) { + byte *mdb, ts[5]; + size_t mdlen; + const char *fp; + int c, d; + + gcry_md_final(mfx.md); + /* this assumes gcry_md_read returns the same buffer */ + mdb = gcry_md_read(mfx.md, opt.def_digest_algo); + mdlen = gcry_md_get_algo_dlen(opt.def_digest_algo); + if (strlen(fname) != mdlen * 2 + 11) + log_bug("digests must be %d + @ + 5 bytes\n", mdlen); + d = -1; + for (fp = fname ; *fp; ) { + c = *fp++; + if (c >= '0' && c <= '9') + c -= '0'; + else if (c >= 'a' && c <= 'f') + c -= 'a' - 10; + else if (c >= 'A' && c <= 'F') + c -= 'A' - 10; + else + log_bug("filename is not hex\n"); + if (d >= 0) { + *mdb++ = d << 4 | c; + c = -1; + if (--mdlen == 0) { + mdb = ts; + if (*fp++ != '@') + log_bug("missing time separator\n"); + } + } + d = c; + } + sigclass = ts[0]; + if (sigclass != 0x00 && sigclass != 0x01) + log_bug("bad cipher class\n"); + timestamp = buf32_to_u32(ts + 1); + } else { /* read, so that the filter can calculate the digest */ while( iobuf_get(inp) != -1 ) @@ -1102,8 +1162,8 @@ sign_file (ctrl_t ctrl, strlist_t filena /* write the signatures */ rc = write_signature_packets (ctrl, sk_list, out, mfx.md, - opt.textmode && !outfile? 0x01 : 0x00, - 0, duration, detached ? 'D':'S', NULL); + sigclass, + timestamp, duration, detached ? 'D':'S', NULL); if( rc ) goto leave;
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