crypto-tester: Support testing DH groups using DH test vectors

src/libstrongswan/crypto/crypto_tester.h

@@ -31,6 +31,7 @@ typedef struct signer_test_vector_t signer_test_vector_t;
 typedef struct hasher_test_vector_t hasher_test_vector_t;
 typedef struct prf_test_vector_t prf_test_vector_t;
 typedef struct rng_test_vector_t rng_test_vector_t;
+typedef struct dh_test_vector_t dh_test_vector_t;
 
 struct crypter_test_vector_t {
 	/** encryption algorithm this vector tests */
@@ -129,6 +130,27 @@ struct rng_test_vector_t {
 	void *user;
 };
 
+struct dh_test_vector_t {
+	/** diffie hellman group to test */
+	diffie_hellman_group_t group;
+	/** private value of alice */
+	u_char *priv_a;
+	/** private value of bob */
+	u_char *priv_b;
+	/** length of private values */
+	size_t priv_len;
+	/** expected public value of alice */
+	u_char *pub_a;
+	/** expected public value of bob */
+	u_char *pub_b;
+	/** size of public values */
+	size_t pub_len;
+	/** expected shared secret */
+	u_char *shared;
+	/** size of shared secret */
+	size_t shared_len;
+};
+
 /**
  * Cryptographic primitive testing framework.
  */
@@ -205,6 +227,18 @@ struct crypto_tester_t {
 	bool (*test_rng)(crypto_tester_t *this, rng_quality_t quality,
 					 rng_constructor_t create,
 					 u_int *speed, const char *plugin_name);
+	/**
+	 * Test a Diffie-Hellman implementation.
+	 *
+	 * @param group			group to test
+	 * @param create		constructor function for the DH backend
+	 * @param speed			speeed test result, NULL to omit
+	 * @return				TRUE if test passed
+	 */
+	bool (*test_dh)(crypto_tester_t *this, diffie_hellman_group_t group,
+					dh_constructor_t create,
+					u_int *speed, const char *plugin_name);
+
 	/**
 	 * Add a test vector to test a crypter.
 	 *
@@ -247,6 +281,13 @@ struct crypto_tester_t {
 	 */
 	void (*add_rng_vector)(crypto_tester_t *this, rng_test_vector_t *vector);
 
+	/**
+	 * Add a test vector to test a Diffie-Hellman backend.
+	 *
+	 * @param vector		pointer to test vector
+	 */
+	void (*add_dh_vector)(crypto_tester_t *this, dh_test_vector_t *vector);
+
 	/**
 	 * Destroy a crypto_tester_t.
 	 */