1 files changed, 67 insertions, 0 deletions
diff --git a/src/protocol/internal/fqterm_ssh_rsa.cpp b/src/protocol/internal/fqterm_ssh_rsa.cpp
new file mode 100644
index 0000000..dd36898
--- /dev/null
+++ b/src/protocol/internal/fqterm_ssh_rsa.cpp
@@ -0,0 +1,67 @@
+/***************************************************************************
+ *   fqterm, a terminal emulator for both BBS and *nix.                    *
+ *   Copyright (C) 2008 fqterm development group.                          *
+ *                                                                         *
+ *   This program 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.                                   *
+ *                                                                         *
+ *   This program 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.,                                       *
+ *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.               *
+ ***************************************************************************/
+
+#include <QGlobalStatic>
+
+#include "fqterm_trace.h"
+#include "fqterm_ssh_types.h"
+#include "fqterm_ssh_rsa.h"
+
+namespace FQTerm {
+
+FQTermSSHRSA::FQTermSSHRSA() {
+  d_rsa = RSA_new();
+  d_rsa->n = BN_new();
+  d_rsa->e = BN_new();
+}
+
+FQTermSSHRSA::~FQTermSSHRSA() {
+  if (d_rsa != NULL) {
+    RSA_free(d_rsa);
+  } 
+}
+
+void FQTermSSHRSA::publicEncrypt(BIGNUM *out, BIGNUM *in) {
+  u_char *inbuf,  *outbuf;
+  int len, ilen, olen;
+  
+  if (BN_num_bits(d_rsa->e) < 2 || !BN_is_odd(d_rsa->e)) {
+    FQ_VERIFY(false);  // public_encrypt() exponent too small or not odd.
+  } 
+  
+  olen = BN_num_bytes(d_rsa->n);
+  outbuf = new u_char[olen];
+  
+  ilen = BN_num_bytes(in);
+  inbuf = new u_char[ilen];
+  BN_bn2bin(in, inbuf);
+  
+  if ((len = RSA_public_encrypt(ilen, inbuf, outbuf, d_rsa, RSA_PKCS1_PADDING)) <= 0) { 
+    //RSA_PKCS1_PADDING = 1
+    FQ_VERIFY(false);  // "rsa_public_encrypt() failed.
+  } 
+
+  BN_bin2bn(outbuf, len, out);
+
+  delete [] outbuf;
+  delete [] inbuf;
+}
+
+}  // namespace FQTerm