3  * Elliptic Curve (Russian) Digital Signature Algorithm for Cryptographic API
38 	const struct ecc_curve *curve; /* curve from oid */  member
88 	 * Digest value, digest algorithm, and curve (modulus) should have the  in ecrdsa_verify()
92 	if (!ctx->curve ||  in ecrdsa_verify()
97 	    req->dst_len != ctx->curve->g.ndigits * sizeof(u64) ||  in ecrdsa_verify()
98 	    ctx->pub_key.ndigits != ctx->curve->g.ndigits ||  in ecrdsa_verify()
116 	    vli_cmp(r, ctx->curve->n, ndigits) >= 0 ||  in ecrdsa_verify()
118 	    vli_cmp(s, ctx->curve->n, ndigits) >= 0)  in ecrdsa_verify()
124 	if (vli_cmp(e, ctx->curve->n, ndigits) >= 0)  in ecrdsa_verify()
125 		vli_sub(e, e, ctx->curve->n, ndigits);  in ecrdsa_verify()
130 	vli_mod_inv(v, e, ctx->curve->n, ndigits);  in ecrdsa_verify()
133 	vli_mod_mult_slow(z1, s, v, ctx->curve->n, ndigits);  in ecrdsa_verify()
134 	vli_sub(_r, ctx->curve->n, r, ndigits);  in ecrdsa_verify()
135 	vli_mod_mult_slow(z2, _r, v, ctx->curve->n, ndigits);  in ecrdsa_verify()
138 	ecc_point_mult_shamir(&cc, z1, &ctx->curve->g, z2, &ctx->pub_key,  in ecrdsa_verify()
139 			      ctx->curve);  in ecrdsa_verify()
140 	if (vli_cmp(cc.x, ctx->curve->n, ndigits) >= 0)  in ecrdsa_verify()
141 		vli_sub(cc.x, cc.x, ctx->curve->n, ndigits);  in ecrdsa_verify()
158 	ctx->curve = get_curve_by_oid(ctx->curve_oid);  in ecrdsa_param_curve()
225 	 * Sizes of algo (set in digest_len) and curve should match  in ecrdsa_set_pub_key()
228 	if (!ctx->curve ||  in ecrdsa_set_pub_key()
229 	    ctx->curve->g.ndigits * sizeof(u64) != ctx->digest_len)  in ecrdsa_set_pub_key()
233 	 * curve size.  in ecrdsa_set_pub_key()
237 	    ctx->key_len != ctx->curve->g.ndigits * sizeof(u64) * 2)  in ecrdsa_set_pub_key()
246 	if (ecc_is_pubkey_valid_partial(ctx->curve, &ctx->pub_key))  in ecrdsa_set_pub_key()