56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/* Code submitted by Svante Seleborg, cleaned up by Tom St Denis */
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#include "mycrypt.h"
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#include <stdarg.h>
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#ifdef MPI
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mp_err mp_init_multi(mp_int *mp, ...)
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{
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mp_err res = MP_OKAY; /* Assume ok until proven otherwise */
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int n = 0; /* Number of ok inits */
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mp_int* cur_arg = mp;
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va_list args;
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va_start(args, mp); /* init args to next argument from caller */
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while (cur_arg != NULL) {
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if (mp_init(cur_arg) != MP_OKAY) {
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/* Oops - error! Back-track and mp_clear what we already
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succeeded in init-ing, then return error.
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*/
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va_list clean_args;
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cur_arg = mp;
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va_start(clean_args, mp);
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while (n--) {
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mp_clear(cur_arg);
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cur_arg = va_arg(clean_args, mp_int*);
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}
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va_end(clean_args);
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res = MP_MEM;
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break;
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}
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n++;
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cur_arg = va_arg(args, mp_int*);
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}
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va_end(args);
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return res; /* Assumed ok, if error flagged above. */
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}
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/*
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Clear all arguments given, ended by a NULL marker.
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*/
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void mp_clear_multi(mp_int *mp, ...)
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{
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mp_int* next_mp = mp;
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va_list args;
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va_start(args, mp);
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while (next_mp != NULL) {
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mp_clear(next_mp);
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next_mp = va_arg(args, mp_int*);
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}
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va_end(args);
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}
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#endif
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