Lines Matching refs:ctx
82 static int gf2m_Mdouble(const EC_GROUP *group, BIGNUM *x, BIGNUM *z, BN_CTX *ctx)
87 /* Since Mdouble is static we can guarantee that ctx != NULL. */
88 BN_CTX_start(ctx);
89 t1 = BN_CTX_get(ctx);
92 if (!group->meth->field_sqr(group, x, x, ctx)) goto err;
93 if (!group->meth->field_sqr(group, t1, z, ctx)) goto err;
94 if (!group->meth->field_mul(group, z, x, t1, ctx)) goto err;
95 if (!group->meth->field_sqr(group, x, x, ctx)) goto err;
96 if (!group->meth->field_sqr(group, t1, t1, ctx)) goto err;
97 if (!group->meth->field_mul(group, t1, &group->b, t1, ctx)) goto err;
103 BN_CTX_end(ctx);
114 const BIGNUM *x2, const BIGNUM *z2, BN_CTX *ctx)
119 /* Since Madd is static we can guarantee that ctx != NULL. */
120 BN_CTX_start(ctx);
121 t1 = BN_CTX_get(ctx);
122 t2 = BN_CTX_get(ctx);
126 if (!group->meth->field_mul(group, x1, x1, z2, ctx)) goto err;
127 if (!group->meth->field_mul(group, z1, z1, x2, ctx)) goto err;
128 if (!group->meth->field_mul(group, t2, x1, z1, ctx)) goto err;
130 if (!group->meth->field_sqr(group, z1, z1, ctx)) goto err;
131 if (!group->meth->field_mul(group, x1, z1, t1, ctx)) goto err;
137 BN_CTX_end(ctx);
151 BIGNUM *z1, BIGNUM *x2, BIGNUM *z2, BN_CTX *ctx)
170 /* Since Mxy is static we can guarantee that ctx != NULL. */
171 BN_CTX_start(ctx);
172 t3 = BN_CTX_get(ctx);
173 t4 = BN_CTX_get(ctx);
174 t5 = BN_CTX_get(ctx);
179 if (!group->meth->field_mul(group, t3, z1, z2, ctx)) goto err;
181 if (!group->meth->field_mul(group, z1, z1, x, ctx)) goto err;
183 if (!group->meth->field_mul(group, z2, z2, x, ctx)) goto err;
184 if (!group->meth->field_mul(group, x1, z2, x1, ctx)) goto err;
187 if (!group->meth->field_mul(group, z2, z2, z1, ctx)) goto err;
188 if (!group->meth->field_sqr(group, t4, x, ctx)) goto err;
190 if (!group->meth->field_mul(group, t4, t4, t3, ctx)) goto err;
193 if (!group->meth->field_mul(group, t3, t3, x, ctx)) goto err;
194 if (!group->meth->field_div(group, t3, t5, t3, ctx)) goto err;
195 if (!group->meth->field_mul(group, t4, t3, t4, ctx)) goto err;
196 if (!group->meth->field_mul(group, x2, x1, t3, ctx)) goto err;
199 if (!group->meth->field_mul(group, z2, z2, t4, ctx)) goto err;
205 BN_CTX_end(ctx);
216 const EC_POINT *point, BN_CTX *ctx)
238 /* Since point_multiply is static we can guarantee that ctx != NULL. */
239 BN_CTX_start(ctx);
240 x1 = BN_CTX_get(ctx);
241 z1 = BN_CTX_get(ctx);
249 if (!group->meth->field_sqr(group, z2, x1, ctx)) goto err; /* z2 = x1^2 = x^2 */
250 if (!group->meth->field_sqr(group, x2, z2, ctx)) goto err;
271 if (!gf2m_Madd(group, &point->X, x1, z1, x2, z2, ctx)) goto err;
272 if (!gf2m_Mdouble(group, x2, z2, ctx)) goto err;
276 if (!gf2m_Madd(group, &point->X, x2, z2, x1, z1, ctx)) goto err;
277 if (!gf2m_Mdouble(group, x1, z1, ctx)) goto err;
286 i = gf2m_Mxy(group, &point->X, &point->Y, x1, z1, x2, z2, ctx);
305 BN_CTX_end(ctx);
315 size_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *ctx)
322 if (ctx == NULL)
324 ctx = new_ctx = BN_CTX_new();
325 if (ctx == NULL)
335 ret = ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx);
345 if (!ec_GF2m_montgomery_point_multiply(group, p, scalar, group->generator, ctx)) goto err;
347 if (!group->meth->invert(group, p, ctx)) goto err;
348 if (!group->meth->add(group, r, r, p, ctx)) goto err;
353 if (!ec_GF2m_montgomery_point_multiply(group, p, scalars[i], points[i], ctx)) goto err;
355 if (!group->meth->invert(group, p, ctx)) goto err;
356 if (!group->meth->add(group, r, r, p, ctx)) goto err;
372 int ec_GF2m_precompute_mult(EC_GROUP *group, BN_CTX *ctx)
374 return ec_wNAF_precompute_mult(group, ctx);
