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Add functions EC_POINT_mul and EC_GROUP_precompute.

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The latter does nothing for now, but its existence means
that applications can request precomputation when appropriate.
This commit is contained in:
Bodo Möller
2001-03-11 12:27:24 +00:00
parent 86a921af06
commit 3837491174
5 changed files with 135 additions and 39 deletions
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98
crypto/ec/ectest.c
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@@ -80,8 +80,6 @@ void timings(EC_GROUP *group, int simult, BN_CTX *ctx)
int i, j;
BIGNUM *s, *s0;
EC_POINT *P;
EC_POINT *points[1];
BIGNUM *scalars[1];
s = BN_new();
s0 = BN_new();
@@ -97,9 +95,6 @@ void timings(EC_GROUP *group, int simult, BN_CTX *ctx)
if (P == NULL) ABORT;
EC_POINT_copy(P, EC_GROUP_get0_generator(group));
points[0] = P;
scalars[0] = s0;
clck = clock();
for (i = 0; i < 10; i++)
{
@@ -110,7 +105,7 @@ void timings(EC_GROUP *group, int simult, BN_CTX *ctx)
}
for (j = 0; j < 10; j++)
{
if (!EC_POINTs_mul(group, P, s, simult != 0, points, scalars, ctx)) ABORT;
if (!EC_POINT_mul(group, P, s, simult ? P : NULL, simult ? s0 : NULL, ctx)) ABORT;
}
fprintf(stdout, ".");
fflush(stdout);
@@ -322,12 +317,17 @@ int main(int argc, char *argv[])
if (!BN_hex2bn(&z, "07192B95FFC8DA78631011ED6B24CDD573F977A11E794811")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify group order ... ");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINTs_mul(group, Q, z, 0, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, "ok\n");
fprintf(stdout, ".");
fflush(stdout);
if (!EC_GROUP_precompute(group, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_192 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_192, group)) ABORT;
@@ -357,13 +357,18 @@ int main(int argc, char *argv[])
if (!BN_hex2bn(&z, "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify group order ... ");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINTs_mul(group, Q, z, 0, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, "ok\n");
fprintf(stdout, ".");
fflush(stdout);
if (!EC_GROUP_precompute(group, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_224 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_224, group)) ABORT;
@@ -393,13 +398,18 @@ int main(int argc, char *argv[])
if (!BN_hex2bn(&z, "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify group order ... ");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINTs_mul(group, Q, z, 0, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, "ok\n");
fprintf(stdout, ".");
fflush(stdout);
if (!EC_GROUP_precompute(group, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_256 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_256, group)) ABORT;
@@ -434,13 +444,18 @@ int main(int argc, char *argv[])
"7CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify group order ... ");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINTs_mul(group, Q, z, 0, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, "ok\n");
fprintf(stdout, ".");
fflush(stdout);
if (!EC_GROUP_precompute(group, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_384 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_384, group)) ABORT;
@@ -481,12 +496,17 @@ int main(int argc, char *argv[])
"7086A272C24088BE94769FD16650")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify group order ... ");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINTs_mul(group, Q, z, 0, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, "ok\n");
fprintf(stdout, ".");
fflush(stdout);
if (!EC_GROUP_precompute(group, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_521 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_521, group)) ABORT;
@@ -505,17 +525,17 @@ int main(int argc, char *argv[])
if (!EC_POINT_is_at_infinity(group, R)) ABORT; /* R = P + 2Q */
{
EC_POINT *points[2];
BIGNUM *scalars[2];
const EC_POINT *points[3];
const BIGNUM *scalars[3];
if (EC_POINT_is_at_infinity(group, Q)) ABORT;
points[0] = Q;
points[1] = Q;
points[2] = Q;
if (!BN_add(y, z, BN_value_one())) ABORT;
if (BN_is_odd(y)) ABORT;
if (!BN_rshift1(y, y)) ABORT;
points[0] = Q;
points[1] = Q;
scalars[0] = y; /* (group order + 1)/2, so y*Q + y*Q = Q */
scalars[1] = y;
@@ -534,20 +554,30 @@ int main(int argc, char *argv[])
if (!BN_pseudo_rand(y, BN_num_bits(y), 0, 0)) ABORT;
if (!BN_copy(z, y)) ABORT;
z->neg = 1;
points[0] = Q;
points[1] = Q;
scalars[0] = y;
scalars[1] = z;
scalars[1] = z; /* z = -y */
if (!EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
if (!BN_pseudo_rand(x, BN_num_bits(y) - 1, 0, 0)) ABORT;
if (!BN_add(z, x, y)) ABORT;
z->neg = 1;
scalars[0] = x;
scalars[1] = y;
scalars[2] = z; /* z = -(x+y) */
if (!EC_POINTs_mul(group, P, NULL, 3, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
fprintf(stdout, " ok\n\n");
}
#if 0
#if 1
timings(P_192, 0, ctx);
timings(P_192, 1, ctx);
timings(P_224, 0, ctx);