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remove unused calculations from mod_reduce.

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Signed-off-by: Anthony Romano <anthony.romano@coreos.com>
This commit is contained in:
Anthony Romano 2017-07-16 19:40:49 -07:00 committed by NIIBE Yutaka
parent a51ac8593b
commit 2622840e27
4 changed files with 12 additions and 4 deletions
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6
AUTHORS
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@ -1,3 +1,9 @@
Anthony Romano:
Modified:
src/call-rsa.c
src/main.c
src/mod.c
Kaz Kojima:
Added STM32 Primer2 support.

4
ChangeLog
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@ -1,3 +1,7 @@
2017-07-18 Anthony Romano <anthony.romano@coreos.com>
* src/mod.c (mod_reduce): Clean up unused code.
2017-07-18 Anthony Romano <anthony.romano@coreos.com>
* src/call-rsa.c (modulus_calc): Free modulus on error.

1
THANKS
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@ -11,6 +11,7 @@ Achim Pietig achim@pietig.com
Aidan Thornton
Anibal Monsalve Salazar anibal@debian.org
Andre Zepezauer andre.zepezauer@student.uni-halle.de
Anthony Romano anthony.romano@coreos.com
Bertrand Jacquin bertrand@jacquin.bzh
Clint Adams clint@softwarefreedom.org
Daniel Kahn Gillmor dkg@fifthhorseman.net

5
src/mod.c
View File

@ -36,7 +36,6 @@ mod_reduce (bn256 *X, const bn512 *A, const bn256 *B, const bn256 *MU_lower)
bn512 q_big[1], tmp[1];
uint32_t carry;
#define borrow carry
uint32_t borrow_next;
memset (q, 0, sizeof (bn256));
q->word[0] = A->word[15];
@ -110,9 +109,7 @@ mod_reduce (bn256 *X, const bn512 *A, const bn256 *B, const bn256 *MU_lower)
= tmp->word[11] = tmp->word[10] = tmp->word[9] = 0;
borrow = bn256_sub (X, (bn256 *)&q_big->word[0], (bn256 *)&tmp->word[0]);
borrow_next = (q_big->word[8] < borrow);
q_big->word[8] -= borrow;
borrow_next += (q_big->word[8] < tmp->word[8]);
q_big->word[8] -= tmp->word[8];
carry = q_big->word[8];
@ -122,7 +119,7 @@ mod_reduce (bn256 *X, const bn512 *A, const bn256 *B, const bn256 *MU_lower)
bn256_sub (q, X, B);
if (carry)
carry -= bn256_sub (X, X, B);
bn256_sub (X, X, B);
else
bn256_sub (q, X, B);