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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.
*/
#include "tomcrypt.h"
/**
@file radix_to_bin.c
Convert data from a specific radix to binary.
Steffen Jaeckel
*/
/**
Convert data from a specific radix to binary
The default MPI descriptors #ltm_desc, #tfm_desc and #gmp_desc
have the following restrictions on parameters:
\p in - NUL-terminated char buffer
\p radix - 2..64
@param in The input
@param radix The radix of the input
@param out The output buffer
@param len [in/out] The length of the output buffer
@return CRYPT_OK on success.
*/
int radix_to_bin(const void *in, int radix, void *out, unsigned long *len)
{
unsigned long l;
void* mpi;
int err;
LTC_ARGCHK(in != NULL);
LTC_ARGCHK(len != NULL);
if ((err = mp_init(&mpi)) != CRYPT_OK) return err;
if ((err = mp_read_radix(mpi, in, radix)) != CRYPT_OK) goto LBL_ERR;
if ((l = mp_unsigned_bin_size(mpi)) > *len) {
*len = l;
err = CRYPT_BUFFER_OVERFLOW;
goto LBL_ERR;
}
*len = l;
if ((err = mp_to_unsigned_bin(mpi, out)) != CRYPT_OK) goto LBL_ERR;
LBL_ERR:
mp_clear(mpi);
return err;
}
/* ref: $Format:%D$ */
/* git commit: $Format:%H$ */
/* commit time: $Format:%ai$ */
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