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-rw-r--r--g10/g10.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/g10/g10.c b/g10/g10.c
index e4062909e..d9a524dcc 100644
--- a/g10/g10.c
+++ b/g10/g10.c
@@ -149,6 +149,8 @@ enum cmd_and_opt_values { aNull = 0,
oLoadExtension,
oRFC1991,
oOpenPGP,
+ oPGP2,
+ oNoPGP2,
oCipherAlgo,
oDigestAlgo,
oCompressAlgo,
@@ -363,6 +365,8 @@ static ARGPARSE_OPTS opts[] = {
{ oLoadExtension, "load-extension" ,2, N_("|FILE|load extension module FILE")},
{ oRFC1991, "rfc1991", 0, N_("emulate the mode described in RFC1991")},
{ oOpenPGP, "openpgp", 0, N_("set all packet, cipher and digest options to OpenPGP behavior")},
+ { oPGP2, "pgp2", 0, N_("set all packet, cipher and digest options to PGP 2.x behavior")},
+ { oNoPGP2, "no-pgp2", 0, "@"},
{ oS2KMode, "s2k-mode", 1, N_("|N|use passphrase mode N")},
{ oS2KDigest, "s2k-digest-algo",2,
N_("|NAME|use message digest algorithm NAME for passphrases")},
@@ -1013,6 +1017,8 @@ main( int argc, char **argv )
opt.s2k_digest_algo = DIGEST_ALGO_SHA1;
opt.s2k_cipher_algo = CIPHER_ALGO_CAST5;
break;
+ case oPGP2: opt.pgp2 = 1; break;
+ case oNoPGP2: opt.pgp2 = 0; break;
case oEmuChecksumBug: opt.emulate_bugs |= EMUBUG_GPGCHKSUM; break;
case oEmu3DESS2KBug: opt.emulate_bugs |= EMUBUG_3DESS2K; break;
case oEmuMDEncodeBug: opt.emulate_bugs |= EMUBUG_MDENCODE; break;
@@ -1267,6 +1273,28 @@ main( int argc, char **argv )
if (preference_list && keygen_set_std_prefs (preference_list))
log_error(_("invalid preferences\n"));
+ /* Do this after the switch(), so it can override these
+ settings. */
+ if(opt.pgp2)
+ {
+ opt.rfc1991 = 1;
+ opt.rfc2440 = 0;
+ opt.force_v4_certs = 0;
+ opt.no_comment = 1;
+ opt.escape_from = 1;
+ opt.force_v3_sigs = 1;
+ opt.pgp2_workarounds = 1;
+ opt.def_cipher_algo = CIPHER_ALGO_IDEA;
+ if( cmd==aEncr && check_cipher_algo(CIPHER_ALGO_IDEA) ) {
+ log_info(_("Encrypting a message to a PGP 2.x user requires "
+ "the IDEA cipher module.\n"));
+ log_error(_("Please see http://www.gnupg.org/why-not-idea.html"
+ " for more information.\n"));
+ }
+ opt.def_digest_algo = DIGEST_ALGO_MD5;
+ opt.def_compress_algo = 1;
+ }
+
if( log_get_errorcount(0) )
g10_exit(2);
@@ -1385,6 +1413,12 @@ main( int argc, char **argv )
break;
case aEncr: /* encrypt the given file */
+ if( argc == 0 && opt.pgp2 ) {
+ log_info(_("You must use files (and not a pipe) when "
+ "encrypting with --pgp2 enabled.\n"));
+ log_info(_("This message will not be usable by PGP 2.x\n"));
+ }
+
if( argc > 1 )
wrong_args(_("--encrypt [filename]"));
if( (rc = encode_crypt(fname,remusr)) )
@@ -1413,6 +1447,10 @@ main( int argc, char **argv )
case aSignEncr: /* sign and encrypt the given file */
if( argc > 1 )
wrong_args(_("--sign --encrypt [filename]"));
+ if(opt.pgp2) {
+ log_info(_("You can't sign and encrypt at the same time while in --pgp2 mode\n"));
+ log_info(_("This message will not be usable by PGP 2.x\n"));
+ }
if( argc ) {
sl = m_alloc_clear( sizeof *sl + strlen(fname));
strcpy(sl->d, fname);