[test] Add generic tests for elliptic curve point multiplication

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/tests/elliptic_test.h

@@ -0,0 +1,77 @@
+#ifndef _ELLIPTIC_TEST_H
+#define _ELLIPTIC_TEST_H
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+#include <ipxe/crypto.h>
+#include <ipxe/test.h>
+
+/** An elliptic curve point multiplication test */
+struct elliptic_test {
+	/** Elliptic curve */
+	struct elliptic_curve *curve;
+	/** Base point */
+	const void *base;
+	/** Length of base point (or 0 to use generator) */
+	size_t base_len;
+	/** Scalar multiple */
+	const void *scalar;
+	/** Length of scalar multiple */
+	size_t scalar_len;
+	/** Expected result point */
+	const void *expected;
+	/** Length of expected result point (or 0 to expect failure) */
+	size_t expected_len;
+};
+
+/** Define inline base point */
+#define BASE(...) { __VA_ARGS__ }
+
+/** Define base point to be curve's generator */
+#define BASE_GENERATOR BASE()
+
+/** Define inline scalar multiple */
+#define SCALAR(...) { __VA_ARGS__ }
+
+/** Define inline expected result point */
+#define EXPECTED(...) { __VA_ARGS__ }
+
+/** Define result as an expected failure */
+#define EXPECTED_FAIL EXPECTED()
+
+/**
+ * Define an elliptic curve point multiplication test
+ *
+ * @v name		Test name
+ * @v CURVE		Elliptic curve
+ * @v BASE		Base point
+ * @v SCALAR		Scalar multiple
+ * @v EXPECTED		Expected result point
+ * @ret test		Elliptic curve point multiplication test
+ */
+#define ELLIPTIC_TEST( name, CURVE, BASE, SCALAR, EXPECTED )		\
+	static const uint8_t name ## _base[] = BASE;			\
+	static const uint8_t name ## _scalar[] = SCALAR;		\
+	static const uint8_t name ## _expected[] = EXPECTED;		\
+	static struct elliptic_test name = {				\
+		.curve = CURVE,						\
+		.base = name ## _base,					\
+		.base_len = sizeof ( name ## _base ),			\
+		.scalar = name ## _scalar,				\
+		.scalar_len = sizeof ( name ## _scalar ),		\
+		.expected = name ## _expected,				\
+		.expected_len = sizeof ( name ## _expected ),		\
+	};
+
+extern void elliptic_okx ( struct elliptic_test *test, const char *file,
+			   unsigned int line );
+
+/**
+ * Report an elliptic curve point multiplication test result
+ *
+ * @v test		Elliptic curve point multiplication test
+ */
+#define elliptic_ok( test ) elliptic_okx ( test, __FILE__, __LINE__ )
+
+#endif /* _ELLIPTIC_TEST_H */