elliptic_test.h

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#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>
#include "exchange_test.h"
 
/** An elliptic curve point multiplication test */
struct elliptic_multiply_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;
};
 
/** An elliptic curve point addition test */
struct elliptic_add_test {
        /** Elliptic curve */
        struct elliptic_curve *curve;
        /** Addend point */
        const void *addend;
        /** Length of addend point */
        size_t addend_len;
        /** Augend point */
        const void *augend;
        /** Length of augend point */
        size_t augend_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 addend point */
#define ADDEND(...) { __VA_ARGS__ }
 
/** Define inline augend point */
#define AUGEND(...) { __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_MULTIPLY_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_multiply_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 ),           \
        };
 
/**
 * Define an elliptic curve point addition test
 *
 * @v name              Test name
 * @v CURVE             Elliptic curve
 * @v ADDEND            Addend point
 * @v AUGEND            Augend point
 * @v EXPECTED          Expected result point
 * @ret test            Elliptic curve point multiplication test
 */
#define ELLIPTIC_ADD_TEST( name, CURVE, ADDEND, AUGEND, EXPECTED )      \
        static const uint8_t name ## _addend[] = ADDEND;                \
        static const uint8_t name ## _augend[] = AUGEND;                \
        static const uint8_t name ## _expected[] = EXPECTED;            \
        static struct elliptic_add_test name = {                        \
                .curve = CURVE,                                         \
                .addend = name ## _addend,                              \
                .addend_len = sizeof ( name ## _addend ),               \
                .augend = name ## _augend,                              \
                .augend_len = sizeof ( name ## _augend ),               \
                .expected = name ## _expected,                          \
                .expected_len = sizeof ( name ## _expected ),           \
        };
 
extern void elliptic_curve_okx ( struct elliptic_curve *curve,
                                 const char *file, unsigned int line );
extern void elliptic_multiply_okx ( struct elliptic_multiply_test *test,
                                    const char *file, unsigned int line );
extern void elliptic_add_okx ( struct elliptic_add_test *test,
                               const char *file, unsigned int line );
 
/**
 * Report an elliptic curve sanity test result
 *
 * @v curve             Elliptic curve
 */
#define elliptic_curve_ok( curve ) \
        elliptic_curve_okx ( curve, __FILE__, __LINE__ )
 
/**
 * Report an elliptic curve point multiplication test result
 *
 * @v test              Elliptic curve point multiplication test
 */
#define elliptic_multiply_ok( test ) \
        elliptic_multiply_okx ( test, __FILE__, __LINE__ )
 
/**
 * Report an elliptic curve point addition test result
 *
 * @v test              Elliptic curve point addition test
 */
#define elliptic_add_ok( test ) \
        elliptic_add_okx ( test, __FILE__, __LINE__ )
 
#endif /* _ELLIPTIC_TEST_H */