make sure the entire mp_digit is filled with random data
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2e1446f936
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7cf5c050e2
16
bn_mp_rand.c
16
bn_mp_rand.c
@ -16,6 +16,18 @@
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*/
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/* makes a pseudo-random int of a given size */
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static mp_digit mp_gen_random(void)
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{
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mp_digit d;
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d = ((mp_digit) abs (MP_GEN_RANDOM()));
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#if MP_DIGIT_BIT > 32
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d <<= 32;
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d |= ((mp_digit) abs (MP_GEN_RANDOM()));
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#endif
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d &= MP_MASK;
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return d;
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}
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int
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mp_rand (mp_int * a, int digits)
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{
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@ -29,7 +41,7 @@ mp_rand (mp_int * a, int digits)
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/* first place a random non-zero digit */
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do {
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d = ((mp_digit) abs (MP_GEN_RANDOM())) & MP_MASK;
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d = mp_gen_random();
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} while (d == 0);
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if ((res = mp_add_d (a, d, a)) != MP_OKAY) {
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@ -41,7 +53,7 @@ mp_rand (mp_int * a, int digits)
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return res;
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}
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if ((res = mp_add_d (a, ((mp_digit) abs (MP_GEN_RANDOM())), a)) != MP_OKAY) {
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if ((res = mp_add_d (a, mp_gen_random(), a)) != MP_OKAY) {
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return res;
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}
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}
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