1 files changed, 99 insertions, 0 deletions
diff --git a/lib/otp/otp_print.c b/lib/otp/otp_print.c
new file mode 100644
index 000000000000..372ddcf465d2
--- /dev/null
+++ b/lib/otp/otp_print.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+RCSID("$Id$");
+#endif
+
+#include "otp_locl.h"
+
+extern const char *const std_dict[];
+
+unsigned
+otp_checksum (OtpKey key)
+{
+  int i;
+  unsigned sum = 0;
+
+  for (i = 0; i < OTPKEYSIZE; ++i)
+    sum += ((key[i] >> 0) & 0x03)
+      + ((key[i] >> 2) & 0x03)
+      + ((key[i] >> 4) & 0x03)
+      + ((key[i] >> 6) & 0x03);
+  sum &= 0x03;
+  return sum;
+}
+
+void
+otp_print_stddict (OtpKey key, char *str, size_t sz)
+{
+  unsigned sum;
+
+  sum = otp_checksum (key);
+  snprintf (str, sz,
+	    "%s %s %s %s %s %s",
+	    std_dict[(key[0] << 3) | (key[1] >> 5)],
+	    std_dict[((key[1] & 0x1F) << 6) | (key[2] >> 2)],
+	    std_dict[((key[2] & 0x03) << 9) | (key[3] << 1) | (key[4] >> 7)],
+	    std_dict[((key[4] & 0x7F) << 4) | (key[5] >> 4)],
+	    std_dict[((key[5] & 0x0F) << 7) | (key[6] >> 1)],
+	    std_dict[((key[6] & 0x01) << 10) | (key[7] << 2) | sum]);
+}
+
+void
+otp_print_hex (OtpKey key, char *str, size_t sz)
+{
+  snprintf (str, sz,
+	    "%02x%02x%02x%02x%02x%02x%02x%02x",
+	    key[0], key[1], key[2], key[3],
+	    key[4], key[5], key[6], key[7]);
+}
+
+void
+otp_print_hex_extended (OtpKey key, char *str, size_t sz)
+{
+  strlcpy (str, OTP_HEXPREFIX, sz);
+  otp_print_hex (key,
+		 str + strlen(OTP_HEXPREFIX),
+		 sz - strlen(OTP_HEXPREFIX));
+}
+
+void
+otp_print_stddict_extended (OtpKey key, char *str, size_t sz)
+{
+  strlcpy (str, OTP_WORDPREFIX, sz);
+  otp_print_stddict (key,
+		     str + strlen(OTP_WORDPREFIX),
+		     sz - strlen(OTP_WORDPREFIX));
+}