+static int test_kdf_x963(void)
+{
+ int ret;
+ EVP_KDF_CTX *kctx = NULL;
+ unsigned char out[1024 / 8];
+ /*
+ * Test data from https://csrc.nist.gov/CSRC/media/Projects/
+ * Cryptographic-Algorithm-Validation-Program/documents/components/
+ * 800-135testvectors/ansx963_2001.zip
+ */
+ static const unsigned char z[] = {
+ 0x00, 0xaa, 0x5b, 0xb7, 0x9b, 0x33, 0xe3, 0x89, 0xfa, 0x58, 0xce, 0xad,
+ 0xc0, 0x47, 0x19, 0x7f, 0x14, 0xe7, 0x37, 0x12, 0xf4, 0x52, 0xca, 0xa9,
+ 0xfc, 0x4c, 0x9a, 0xdb, 0x36, 0x93, 0x48, 0xb8, 0x15, 0x07, 0x39, 0x2f,
+ 0x1a, 0x86, 0xdd, 0xfd, 0xb7, 0xc4, 0xff, 0x82, 0x31, 0xc4, 0xbd, 0x0f,
+ 0x44, 0xe4, 0x4a, 0x1b, 0x55, 0xb1, 0x40, 0x47, 0x47, 0xa9, 0xe2, 0xe7,
+ 0x53, 0xf5, 0x5e, 0xf0, 0x5a, 0x2d
+ };
+ static const unsigned char shared[] = {
+ 0xe3, 0xb5, 0xb4, 0xc1, 0xb0, 0xd5, 0xcf, 0x1d, 0x2b, 0x3a, 0x2f, 0x99,
+ 0x37, 0x89, 0x5d, 0x31
+ };
+ static const unsigned char expected[sizeof(out)] = {
+ 0x44, 0x63, 0xf8, 0x69, 0xf3, 0xcc, 0x18, 0x76, 0x9b, 0x52, 0x26, 0x4b,
+ 0x01, 0x12, 0xb5, 0x85, 0x8f, 0x7a, 0xd3, 0x2a, 0x5a, 0x2d, 0x96, 0xd8,
+ 0xcf, 0xfa, 0xbf, 0x7f, 0xa7, 0x33, 0x63, 0x3d, 0x6e, 0x4d, 0xd2, 0xa5,
+ 0x99, 0xac, 0xce, 0xb3, 0xea, 0x54, 0xa6, 0x21, 0x7c, 0xe0, 0xb5, 0x0e,
+ 0xef, 0x4f, 0x6b, 0x40, 0xa5, 0xc3, 0x02, 0x50, 0xa5, 0xa8, 0xee, 0xee,
+ 0x20, 0x80, 0x02, 0x26, 0x70, 0x89, 0xdb, 0xf3, 0x51, 0xf3, 0xf5, 0x02,
+ 0x2a, 0xa9, 0x63, 0x8b, 0xf1, 0xee, 0x41, 0x9d, 0xea, 0x9c, 0x4f, 0xf7,
+ 0x45, 0xa2, 0x5a, 0xc2, 0x7b, 0xda, 0x33, 0xca, 0x08, 0xbd, 0x56, 0xdd,
+ 0x1a, 0x59, 0xb4, 0x10, 0x6c, 0xf2, 0xdb, 0xbc, 0x0a, 0xb2, 0xaa, 0x8e,
+ 0x2e, 0xfa, 0x7b, 0x17, 0x90, 0x2d, 0x34, 0x27, 0x69, 0x51, 0xce, 0xcc,
+ 0xab, 0x87, 0xf9, 0x66, 0x1c, 0x3e, 0x88, 0x16
+ };
+
+ ret =
+ TEST_ptr(kctx = EVP_KDF_CTX_new_id(EVP_KDF_X963))
+ && TEST_int_gt(EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_MD, EVP_sha512()), 0)
+ && TEST_int_gt(EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_KEY, z, sizeof(z)), 0)
+ && TEST_int_gt(EVP_KDF_ctrl(kctx, EVP_KDF_CTRL_SET_SHARED_INFO, shared,
+ sizeof(shared)), 0)
+ && TEST_int_gt(EVP_KDF_derive(kctx, out, sizeof(out)), 0)
+ && TEST_mem_eq(out, sizeof(out), expected, sizeof(expected));
+
+ EVP_KDF_CTX_free(kctx);
+ return ret;
+}
+