Mercurial > dropbear
diff bn_mp_fwrite.c @ 2:86e0b50a9b58 libtommath-orig ltm-0.30-orig
ltm 0.30 orig import
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 31 May 2004 18:25:22 +0000 |
parents | |
children | d29b64170cf0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/bn_mp_fwrite.c Mon May 31 18:25:22 2004 +0000 @@ -0,0 +1,46 @@ +/* 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.org + */ +#include <tommath.h> + +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; +} +