Merge branch 'master' into openslxopenslx

1 files changed, 155 insertions, 0 deletions

diff --git a/src/tests/pubkey_test.c b/src/tests/pubkey_test.c
new file mode 100644
index 000000000..b94ed90ff
--- /dev/null
+++ b/src/tests/pubkey_test.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2024 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+/** @file
+ *
+ * Public key self-tests
+ *
+ */
+
+/* Forcibly enable assertions */
+#undef NDEBUG
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <ipxe/crypto.h>
+#include <ipxe/test.h>
+#include "pubkey_test.h"
+
+/**
+ * Report public key encryption and decryption test result
+ *
+ * @v test		Public key encryption and decryption test
+ * @v file		Test code file
+ * @v line		Test code line
+ */
+void pubkey_okx ( struct pubkey_test *test, const char *file,
+		  unsigned int line ) {
+	struct pubkey_algorithm *pubkey = test->pubkey;
+	struct asn1_builder plaintext;
+	struct asn1_builder ciphertext;
+
+	/* Test key matching */
+	okx ( pubkey_match ( pubkey, &test->private, &test->public ) == 0,
+	      file, line );
+
+	/* Test decrypting with private key to obtain known plaintext */
+	plaintext.data = NULL;
+	plaintext.len = 0;
+	okx ( pubkey_decrypt ( pubkey, &test->private, &test->ciphertext,
+			       &plaintext ) == 0, file, line );
+	okx ( asn1_compare ( asn1_built ( &plaintext ),
+			     &test->plaintext ) == 0, file, line );
+	free ( plaintext.data );
+
+	/* Test encrypting with private key and decrypting with public key */
+	ciphertext.data = NULL;
+	ciphertext.len = 0;
+	plaintext.data = NULL;
+	plaintext.len = 0;
+	okx ( pubkey_encrypt ( pubkey, &test->private, &test->plaintext,
+			       &ciphertext ) == 0, file, line );
+	okx ( pubkey_decrypt ( pubkey, &test->public,
+			       asn1_built ( &ciphertext ),
+			       &plaintext ) == 0, file, line );
+	okx ( asn1_compare ( asn1_built ( &plaintext ),
+			     &test->plaintext ) == 0, file, line );
+	free ( ciphertext.data );
+	free ( plaintext.data );
+
+	/* Test encrypting with public key and decrypting with private key */
+	ciphertext.data = NULL;
+	ciphertext.len = 0;
+	plaintext.data = NULL;
+	plaintext.len = 0;
+	okx ( pubkey_encrypt ( pubkey, &test->public, &test->plaintext,
+			       &ciphertext ) == 0, file, line );
+	okx ( pubkey_decrypt ( pubkey, &test->private,
+			       asn1_built ( &ciphertext ),
+			       &plaintext ) == 0, file, line );
+	okx ( asn1_compare ( asn1_built ( &plaintext ),
+			     &test->plaintext ) == 0, file, line );
+	free ( ciphertext.data );
+	free ( plaintext.data );
+}
+
+/**
+ * Report public key signature test result
+ *
+ * @v test		Public key signature test
+ * @v file		Test code file
+ * @v line		Test code line
+ */
+void pubkey_sign_okx ( struct pubkey_sign_test *test, const char *file,
+		       unsigned int line ) {
+	struct pubkey_algorithm *pubkey = test->pubkey;
+	struct digest_algorithm *digest = test->digest;
+	uint8_t digestctx[digest->ctxsize];
+	uint8_t digestout[digest->digestsize];
+	uint8_t signature[test->signature.len];
+	struct asn1_cursor cursor = { signature, sizeof ( signature ) };
+	struct asn1_builder builder = { NULL, 0 };
+	uint8_t *bad;
+
+	/* Test key matching */
+	okx ( pubkey_match ( pubkey, &test->private, &test->public ) == 0,
+	      file, line );
+
+	/* Construct digest over plaintext */
+	digest_init ( digest, digestctx );
+	digest_update ( digest, digestctx, test->plaintext,
+			test->plaintext_len );
+	digest_final ( digest, digestctx, digestout );
+
+	/* Test verification using public key */
+	okx ( pubkey_verify ( pubkey, &test->public, digest, digestout,
+			      &test->signature ) == 0, file, line );
+
+	/* Test verification failure of modified signature */
+	memcpy ( signature, test->signature.data, sizeof ( signature ) );
+	bad = ( signature + ( sizeof ( signature ) / 2 ) );
+	*bad ^= 0x40;
+	okx ( pubkey_verify ( pubkey, &test->public, digest, digestout,
+			      &cursor ) != 0, file, line );
+	*bad ^= 0x40;
+	okx ( pubkey_verify ( pubkey, &test->public, digest, digestout,
+			      &cursor ) == 0, file, line );
+
+	/* Test signing using private key */
+	okx ( pubkey_sign ( pubkey, &test->private, digest, digestout,
+			    &builder ) == 0, file, line );
+	okx ( builder.len != 0, file, line );
+	okx ( asn1_compare ( asn1_built ( &builder ), &test->signature ) == 0,
+	      file, line );
+
+	/* Test verification of constructed signature */
+	okx ( pubkey_verify ( pubkey, &test->public, digest, digestout,
+			      asn1_built ( &builder ) ) == 0, file, line );
+
+	/* Free signature */
+	free ( builder.data );
+}