Sylvester Version

1 files changed, 100 insertions, 0 deletions

diff --git a/g10/rsa.c b/g10/rsa.c
new file mode 100644
index 000000000..fe4ba2eb0
--- /dev/null
+++ b/g10/rsa.c
@@ -0,0 +1,100 @@
+/* rsa.c
+ *	Copyright (c) 1997 by Werner Koch (dd9jn)
+ *
+ * This file is part of G10.
+ *
+ * G10 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.
+ *
+ * G10 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"
+
+void
+g10_rsa_encrypt( PKT_public_cert *pkc, PKT_pubkey_enc *enc, DEK *dek )
+{
+  #ifdef HAVE_RSA_CIPHER
+    RSA_public_key pkey;
+
+    assert( enc->pubkey_algo == PUBKEY_ALGO_RSA );
+
+    keyid_from_pkc( pkc, enc->keyid );
+    enc->d.rsa.rsa_integer = encode_session_key( dek,
+				mpi_get_nbits(pkc->d.rsa.rsa_n) );
+    pkey.n = pkc->d.rsa.rsa_n;
+    pkey.e = pkc->d.rsa.rsa_e;
+    if( DBG_CIPHER )
+	log_mpidump("Plain DEK frame: ", enc->d.rsa.rsa_integer);
+    rsa_public( enc->d.rsa.rsa_integer, enc->d.rsa.rsa_integer, &pkey);
+    if( DBG_CIPHER )
+	log_mpidump("Encry DEK frame: ", enc->d.rsa.rsa_integer);
+    if( opt.verbose ) {
+	char *ustr = get_user_id_string( enc->keyid );
+	log_info("RSA encrypted for: %s\n", ustr );
+	m_free(ustr);
+    }
+ #else
+    log_bug(NULL);
+ #endif/* ! HAVE_RSA_CIPHER*/
+}
+
+
+void
+g10_rsa_sign( PKT_secret_cert *skc, PKT_signature *sig, MD_HANDLE *md )
+{
+ #ifdef HAVE_RSA_CIPHER
+    RSA_secret_key skey;
+    byte *dp;
+
+    assert( sig->pubkey_algo == PUBKEY_ALGO_RSA );
+
+    dp = md_final( md );
+
+    keyid_from_skc( skc, sig->keyid );
+    sig->d.rsa.digest_algo = md->algo;
+    sig->d.rsa.digest_start[0] = dp[0];
+    sig->d.rsa.digest_start[1] = dp[1];
+    sig->d.rsa.rsa_integer =
+		   encode_md_value( md, mpi_get_nbits(skc->d.rsa.rsa_n));
+    skey.e = skc->d.rsa.rsa_e;
+    skey.n = skc->d.rsa.rsa_n;
+    skey.p = skc->d.rsa.rsa_p;
+    skey.q = skc->d.rsa.rsa_q;
+    skey.d = skc->d.rsa.rsa_d;
+    skey.u = skc->d.rsa.rsa_u;
+    rsa_secret( sig->d.rsa.rsa_integer, sig->d.rsa.rsa_integer, &skey);
+    memset( &skey, 0, sizeof skey );
+    if( opt.verbose ) {
+	char *ustr = get_user_id_string( sig->keyid );
+	log_info("RSA signature from: %s\n", ustr );
+	m_free(ustr);
+    }
+ #else
+    log_bug(NULL);
+ #endif/* ! HAVE_RSA_CIPHER*/
+}
+