add methode ge_scalarmult_vartime
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@ -58,6 +58,7 @@ int ge_frombytes_negate_vartime(ge_p3 *h, const unsigned char *s);
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void ge_add(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
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void ge_add(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
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void ge_sub(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
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void ge_sub(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
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void ge_double_scalarmult_vartime(ge_p2 *r, const unsigned char *a, const ge_p3 *A, const unsigned char *b);
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void ge_double_scalarmult_vartime(ge_p2 *r, const unsigned char *a, const ge_p3 *A, const unsigned char *b);
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void ge_scalarmult_vartime(ge_p2 *r, const unsigned char *a, const ge_p3 *A);
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void ge_madd(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q);
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void ge_madd(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q);
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void ge_msub(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q);
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void ge_msub(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q);
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void ge_scalarmult_base(ge_p3 *h, const unsigned char *a);
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void ge_scalarmult_base(ge_p3 *h, const unsigned char *a);
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10
src/ge.c
10
src/ge.c
@ -1,3 +1,4 @@
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#include <memory.h>
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#include "../include/ge.h"
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#include "../include/ge.h"
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#include "../include/precomp_data.h"
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#include "../include/precomp_data.h"
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@ -57,6 +58,15 @@ static void slide(signed char *r, const unsigned char *a) {
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}
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}
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}
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}
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/*
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* Warps to ge_double_scalarmult_vartime() => r = a * A + zero * B
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*/
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void ge_scalarmult_vartime(ge_p2 *r, const unsigned char *a, const ge_p3 *A) {
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unsigned char zero[32];
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memset(zero, 0, sizeof(zero));
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ge_double_scalarmult_vartime(r, a, A, zero);
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}
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/*
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/*
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r = a * A + b * B
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r = a * A + b * B
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where a = a[0]+256*a[1]+...+256^31 a[31].
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where a = a[0]+256*a[1]+...+256^31 a[31].
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