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gpg2
gnupg-2.0.18-files-are-digests.patch
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File gnupg-2.0.18-files-are-digests.patch of Package gpg2
--- g10/gpg.c | 4 +++ g10/options.h | 1 g10/sign.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++----- 3 files changed, 66 insertions(+), 5 deletions(-) Index: gnupg-2.0.23/g10/gpg.c =================================================================== --- gnupg-2.0.23.orig/g10/gpg.c 2014-06-03 22:36:44.000000000 +0100 +++ gnupg-2.0.23/g10/gpg.c 2014-06-03 22:36:55.000000000 +0100 @@ -345,6 +345,7 @@ enum cmd_and_opt_values oTTYtype, oLCctype, oLCmessages, + oFilesAreDigests, oXauthority, oGroup, oUnGroup, @@ -711,6 +712,7 @@ static ARGPARSE_OPTS opts[] = { ARGPARSE_s_s (oPersonalDigestPreferences, "personal-digest-preferences","@"), ARGPARSE_s_s (oPersonalCompressPreferences, "personal-compress-preferences", "@"), + ARGPARSE_s_n (oFilesAreDigests, "files-are-digests", "@"), /* Aliases. I constantly mistype these, and assume other people do as well. */ @@ -2001,6 +2003,7 @@ main (int argc, char **argv) opt.def_sig_expire="0"; opt.def_cert_expire="0"; set_homedir ( default_homedir () ); + opt.files_are_digests=0; opt.passphrase_repeat=1; opt.emit_version = 1; /* Limit to the major number. */ @@ -2491,6 +2494,7 @@ main (int argc, char **argv) case oPhotoViewer: opt.photo_viewer = pargs.r.ret_str; break; case oForceV3Sigs: opt.force_v3_sigs = 1; break; case oNoForceV3Sigs: opt.force_v3_sigs = 0; break; + case oFilesAreDigests: opt.files_are_digests = 1; break; case oForceV4Certs: opt.force_v4_certs = 1; break; case oNoForceV4Certs: opt.force_v4_certs = 0; break; case oForceMDC: opt.force_mdc = 1; break; Index: gnupg-2.0.23/g10/options.h =================================================================== --- gnupg-2.0.23.orig/g10/options.h 2014-06-03 22:36:44.000000000 +0100 +++ gnupg-2.0.23/g10/options.h 2014-06-03 22:36:55.000000000 +0100 @@ -198,6 +198,7 @@ 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-2.0.23/g10/sign.c =================================================================== --- gnupg-2.0.23.orig/g10/sign.c 2014-06-03 22:36:44.000000000 +0100 +++ gnupg-2.0.23/g10/sign.c 2014-06-03 22:36:55.000000000 +0100 @@ -665,8 +665,12 @@ write_signature_packets (SK_LIST sk_list mk_notation_policy_etc (sig, NULL, sk); } + 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( sk, sig, md, hash_for (sk) ); gcry_md_close (md); @@ -723,6 +727,8 @@ sign_file( strlist_t filenames, int deta 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 (); @@ -739,7 +745,16 @@ sign_file( strlist_t filenames, int deta 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))) @@ -767,7 +782,7 @@ sign_file( strlist_t filenames, int deta 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); @@ -900,7 +915,7 @@ sign_file( strlist_t filenames, int deta gcry_md_enable (mfx.md, hash_for(sk)); } - if( !multifile ) + if( !multifile && !opt.files_are_digests ) iobuf_push_filter( inp, md_filter, &mfx ); if( detached && !encryptflag && !RFC1991 ) @@ -955,6 +970,8 @@ sign_file( strlist_t filenames, int deta write_status_begin_signing (mfx.md); + sigclass = opt.textmode && !outfile? 0x01 : 0x00; + /* Setup the inner packet. */ if( detached ) { if( multifile ) { @@ -995,6 +1012,45 @@ sign_file( strlist_t filenames, int deta if( opt.verbose ) putc( '\n', stderr ); } + 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 = buffer_to_u32(ts + 1); + } else { /* read, so that the filter can calculate the digest */ while( iobuf_get(inp) != -1 ) @@ -1012,8 +1068,8 @@ sign_file( strlist_t filenames, int deta /* write the signatures */ rc = write_signature_packets (sk_list, out, mfx.md, - opt.textmode && !outfile? 0x01 : 0x00, - 0, duration, detached ? 'D':'S'); + sigclass, + timestamp, duration, detached ? 'D':'S'); if( rc ) goto leave;
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