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File gnupg-2.0.13_2.patch of Package gpg2
diff -ur gnupg-2.0.9.orig/g10/options.h gnupg-2.0.9/g10/options.h --- gnupg-2.0.9.orig/g10/options.h 2007-11-15 19:49:41.000000000 +0100 +++ gnupg-2.0.9/g10/options.h 2008-08-22 15:48:19.000000000 +0200 @@ -196,6 +196,7 @@ 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; diff -ur gnupg-2.0.9.orig/g10/sign.c gnupg-2.0.9/g10/sign.c --- gnupg-2.0.9.orig/g10/sign.c 2007-12-12 10:25:28.000000000 +0100 +++ gnupg-2.0.9/g10/sign.c 2008-08-22 17:05:24.000000000 +0200 @@ -664,8 +664,12 @@ mk_notation_policy_etc (sig, NULL, sk); } - hash_sigversion_to_magic (md, sig); - gcry_md_final (md); + 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); @@ -721,7 +725,9 @@ SK_LIST sk_list = NULL; SK_LIST sk_rover = NULL; int multifile = 0; + u32 create_time=make_timestamp(); u32 duration=0; + int sigclass = 0x00; pfx = new_progress_context (); afx = new_armor_context (); @@ -738,7 +744,16 @@ 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))) @@ -766,7 +781,7 @@ 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); @@ -899,7 +914,7 @@ 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 ) @@ -954,6 +969,8 @@ write_status_begin_signing (mfx.md); + sigclass = opt.textmode && !outfile? 0x01 : 0x00; + /* Setup the inner packet. */ if( detached ) { if( multifile ) { @@ -994,6 +1011,46 @@ 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 md_read returns the same buffer */ + mdb = gcry_md_read(mfx.md, opt.def_digest_algo); +/* (void)md_asn_oid(opt.def_digest_algo, (size_t)0, &mdlen); + if (strlen(fname) != mdlen * 2 + 11) + log_bug("digests must be %d + @ + 5 bytes\n",(long)mdlen);a +*/ + 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"); + create_time = buffer_to_u32(ts + 1); + } else { /* read, so that the filter can calculate the digest */ while( iobuf_get(inp) != -1 ) @@ -1011,7 +1068,7 @@ /* write the signatures */ rc = write_signature_packets (sk_list, out, mfx.md, - opt.textmode && !outfile? 0x01 : 0x00, + sigclass, 0, duration, detached ? 'D':'S'); if( rc ) goto leave;
