Mercurial > dropbear
view libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c @ 1186:a4ce76e6fb63
Another attempt at test for crypt()
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 26 Nov 2015 23:01:13 +0800 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
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/* 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. * * Tom St Denis, [email protected], http://libtomcrypt.com */ /* 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 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 /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c,v $ */ /* $Revision: 1.4 $ */ /* $Date: 2006/11/21 00:10:18 $ */