partial DSA support

1 files changed, 82 insertions, 0 deletions

diff --git a/g10/decrypt.c b/g10/decrypt.c
new file mode 100644
index 000000000..1a457f2df
--- /dev/null
+++ b/g10/decrypt.c
@@ -0,0 +1,82 @@
+/* verify.c - verify signed data
+ *	Copyright (C) 1998 Free Software Foundation, Inc.
+ *
+ * This file is part of GNUPG.
+ *
+ * GNUPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GNUPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "options.h"
+#include "packet.h"
+#include "errors.h"
+#include "iobuf.h"
+#include "keydb.h"
+#include "memory.h"
+#include "util.h"
+#include "main.h"
+#include "i18n.h"
+
+
+
+/****************
+ * Assume that the input is an encrypted message and decrypt
+ * (and if signed, verify the signature) it.
+ * This command differs from the default operation, as it never
+ * write to the filename which is included in the file and that it
+ * rejects files which don't begin with an encrypted message.
+ */
+
+int
+decrypt_message( const char *filename )
+{
+    IOBUF fp;
+    armor_filter_context_t afx;
+    int rc;
+    int no_out=0;
+
+    /* open the message file */
+    fp = iobuf_open(filename);
+    if( !fp ) {
+	log_error(_("can't open '%s'\n"), print_fname_stdin(filename));
+	return G10ERR_OPEN_FILE;
+    }
+
+    if( !opt.no_armor ) {
+	if( use_armor_filter( fp ) ) {
+	    memset( &afx, 0, sizeof afx);
+	    iobuf_push_filter( fp, armor_filter, &afx );
+	}
+    }
+
+    if( !opt.outfile ) {
+	no_out = 1;
+	opt.outfile = "-";
+    }
+    rc = proc_encryption_packets( fp );
+    if( no_out )
+       opt.outfile = NULL;
+    iobuf_close(fp);
+    return rc;
+}
+
+
+