commit files needed for zpm-fetchurl

[zpackage] / libtomcrypt / src / pk / ecc / ltc_ecc_is_valid_idx.c

diff --git a/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c b/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c
new file mode 100644 (file)
index 0000000..057a899
--- /dev/null
+++ b/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c
@@ -0,0 +1,44 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+
+/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b
+ *
+ * All curves taken from NIST recommendation paper of July 1999
+ * Available at http://csrc.nist.gov/cryptval/dss.htm
+ */
+#include "tomcrypt.h"
+
+/**
+  @file ltc_ecc_is_valid_idx.c
+  ECC Crypto, Tom St Denis
+*/
+
+#ifdef LTC_MECC
+
+/** Returns whether an ECC idx is valid or not
+  @param n   The idx number to check
+  @return 1 if valid, 0 if not
+*/
+int ltc_ecc_is_valid_idx(int n)
+{
+   int x;
+
+   for (x = 0; ltc_ecc_sets[x].size != 0; x++);
+   /* -1 is a valid index --- indicating that the domain params were supplied by the user */
+   if ((n >= -1) && (n < x)) {
+      return 1;
+   }
+   return 0;
+}
+
+#endif
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
+