/src/sqr/fp_sqrmod.c

http://github.com/libtom/tomsfastmath · C · 12 lines · 8 code · 1 blank · 3 comment · 0 complexity · 9107021fb4bf56df06b6e54e5835cae6 MD5 · raw file 

    

  1. /* TomsFastMath, a fast ISO C bignum library. -- Tom St Denis */
    2. 

  2. /* SPDX-License-Identifier: Unlicense */
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  3. #include <tfm_private.h>
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  4. 

  5. /* c = a * a (mod b) */
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  6. int fp_sqrmod(fp_int *a, fp_int *b, fp_int *c)
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  7. {
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  8.   fp_int tmp;
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  9.   fp_zero(&tmp);
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  10.   fp_sqr(a, &tmp);
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  11.   return fp_mod(&tmp, b, c);
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  12. }
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