+const struct {
+ const char *scalar;
+ const char *u_in;
+ const char *u_out;
+} C25519_KAT[] = {
+ { "A546E36BF0527C9D3B16154B82465EDD62144C0AC1FC5A18506A2244BA449AC4",
+ "E6DB6867583030DB3594C1A424B15F7C726624EC26B3353B10A903A6D0AB1C4C",
+ "C3DA55379DE9C6908E94EA4DF28D084F32ECCF03491C71F754B4075577A28552" },
+ { "4B66E9D4D1B4673C5AD22691957D6AF5C11B6421E0EA01D42CA4169E7918BA0D",
+ "E5210F12786811D3F4B7959D0538AE2C31DBE7106FC03C3EFC4CD549C715A493",
+ "95CBDE9476E8907D7AADE45CB4B873F88B595A68799FA152E6F8F7647AAC7957" },
+ { 0, 0, 0 }
+};
+
+static void
+test_EC_c25519(const char *name, const br_ec_impl *iec)
+{
+ size_t v;
+
+ printf("Test %s: ", name);
+ fflush(stdout);
+ for (v = 0; C25519_KAT[v].scalar; v ++) {
+ unsigned char bu[32], bk[32], br[32];
+
+ hextobin(bk, C25519_KAT[v].scalar);
+ hextobin(bu, C25519_KAT[v].u_in);
+ hextobin(br, C25519_KAT[v].u_out);
+ if (!iec->mul(bu, sizeof bu, bk, sizeof bk, BR_EC_curve25519)) {
+ fprintf(stderr, "Curve25519 multiplication failed\n");
+ exit(EXIT_FAILURE);
+ }
+ if (memcmp(bu, br, sizeof bu) != 0) {
+ fprintf(stderr, "Curve25519 failed KAT\n");
+ exit(EXIT_FAILURE);
+ }
+ printf(".");
+ fflush(stdout);
+ }
+ printf(" done.\n");
+ fflush(stdout);
+}
+
+static void
+test_EC_c25519_i15(void)
+{
+ test_EC_c25519("EC_c25519_i15", &br_ec_c25519_i15);
+}
+