Mercurial > dropbear
view libtommath/bn_mp_fwrite.c @ 1175:1b8afc698e39
check for zero K value from curve25519
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 25 Nov 2015 22:15:59 +0800 |
parents | 5ff8218bcee9 |
children | 60fc6476e044 |
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#include <tommath.h> #ifdef BN_MP_FWRITE_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * * LibTomMath is a library that provides multiple-precision * integer arithmetic as well as number theoretic functionality. * * The library was designed directly after the MPI library by * Michael Fromberger but has been written from scratch with * additional optimizations in place. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://math.libtomcrypt.com */ int mp_fwrite(mp_int *a, int radix, FILE *stream) { char *buf; int err, len, x; if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) { return err; } buf = OPT_CAST(char) XMALLOC (len); if (buf == NULL) { return MP_MEM; } if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) { XFREE (buf); return err; } for (x = 0; x < len; x++) { if (fputc(buf[x], stream) == EOF) { XFREE (buf); return MP_VAL; } } XFREE (buf); return MP_OKAY; } #endif /* $Source: /cvs/libtom/libtommath/bn_mp_fwrite.c,v $ */ /* $Revision: 1.3 $ */ /* $Date: 2006/03/31 14:18:44 $ */