--- /dev/null
+/*
+ * Copyright (C) 2012 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
+ *
+ * Cipher 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/profile.h>
+#include <ipxe/test.h>
+#include "cipher_test.h"
+
+/** Number of sample iterations for profiling */
+#define PROFILE_COUNT 16
+
+/**
+ * Report a cipher encryption test result
+ *
+ * @v test Cipher test
+ * @v file Test code file
+ * @v line Test code line
+ */
+void cipher_encrypt_okx ( struct cipher_test *test, const char *file,
+ unsigned int line ) {
+ struct cipher_algorithm *cipher = test->cipher;
+ size_t len = test->len;
+ uint8_t ctx[cipher->ctxsize];
+ uint8_t ciphertext[len];
+
+ /* Initialise cipher */
+ okx ( cipher_setkey ( cipher, ctx, test->key, test->key_len ) == 0,
+ file, line );
+ cipher_setiv ( cipher, ctx, test->iv );
+
+ /* Perform encryption */
+ cipher_encrypt ( cipher, ctx, test->plaintext, ciphertext, len );
+
+ /* Compare against expected ciphertext */
+ okx ( memcmp ( ciphertext, test->ciphertext, len ) == 0, file, line );
+}
+
+/**
+ * Report a cipher decryption test result
+ *
+ * @v test Cipher test
+ * @v file Test code file
+ * @v line Test code line
+ */
+void cipher_decrypt_okx ( struct cipher_test *test, const char *file,
+ unsigned int line ) {
+ struct cipher_algorithm *cipher = test->cipher;
+ size_t len = test->len;
+ uint8_t ctx[cipher->ctxsize];
+ uint8_t plaintext[len];
+
+ /* Initialise cipher */
+ okx ( cipher_setkey ( cipher, ctx, test->key, test->key_len ) == 0,
+ file, line );
+ cipher_setiv ( cipher, ctx, test->iv );
+
+ /* Perform encryption */
+ cipher_decrypt ( cipher, ctx, test->ciphertext, plaintext, len );
+
+ /* Compare against expected plaintext */
+ okx ( memcmp ( plaintext, test->plaintext, len ) == 0, file, line );
+}
+
+/**
+ * Report a cipher encryption and decryption test result
+ *
+ * @v test Cipher test
+ * @v file Test code file
+ * @v line Test code line
+ */
+void cipher_okx ( struct cipher_test *test, const char *file,
+ unsigned int line ) {
+
+ cipher_encrypt_okx ( test, file, line );
+ cipher_decrypt_okx ( test, file, line );
+}
+
+/**
+ * Calculate cipher encryption or decryption cost
+ *
+ * @v cipher Cipher algorithm
+ * @v key_len Length of key
+ * @v op Encryption or decryption operation
+ * @ret cost Cost (in cycles per byte)
+ */
+static unsigned long
+cipher_cost ( struct cipher_algorithm *cipher, size_t key_len,
+ void ( * op ) ( struct cipher_algorithm *cipher, void *ctx,
+ const void *src, void *dst, size_t len ) ) {
+ static uint8_t random[8192]; /* Too large for stack */
+ uint8_t key[key_len];
+ uint8_t iv[cipher->blocksize];
+ uint8_t ctx[cipher->ctxsize];
+ struct profiler profiler;
+ unsigned long cost;
+ unsigned int i;
+ int rc;
+
+ /* Fill buffer with pseudo-random data */
+ srand ( 0x1234568 );
+ for ( i = 0 ; i < sizeof ( random ) ; i++ )
+ random[i] = rand();
+ for ( i = 0 ; i < sizeof ( key ) ; i++ )
+ key[i] = rand();
+ for ( i = 0 ; i < sizeof ( iv ) ; i++ )
+ iv[i] = rand();
+
+ /* Initialise cipher */
+ rc = cipher_setkey ( cipher, ctx, key, key_len );
+ assert ( rc == 0 );
+ cipher_setiv ( cipher, ctx, iv );
+
+ /* Profile cipher operation */
+ memset ( &profiler, 0, sizeof ( profiler ) );
+ for ( i = 0 ; i < PROFILE_COUNT ; i++ ) {
+ profile_start ( &profiler );
+ op ( cipher, ctx, random, random, sizeof ( random ) );
+ profile_stop ( &profiler );
+ }
+
+ /* Round to nearest whole number of cycles per byte */
+ cost = ( ( profile_mean ( &profiler ) + ( sizeof ( random ) / 2 ) ) /
+ sizeof ( random ) );
+
+ return cost;
+}
+
+/**
+ * Calculate cipher encryption cost
+ *
+ * @v cipher Cipher algorithm
+ * @v key_len Length of key
+ * @ret cost Cost (in cycles per byte)
+ */
+unsigned long cipher_cost_encrypt ( struct cipher_algorithm *cipher,
+ size_t key_len ) {
+ return cipher_cost ( cipher, key_len, cipher_encrypt );
+}
+
+/**
+ * Calculate cipher decryption cost
+ *
+ * @v cipher Cipher algorithm
+ * @v key_len Length of key
+ * @ret cost Cost (in cycles per byte)
+ */
+unsigned long cipher_cost_decrypt ( struct cipher_algorithm *cipher,
+ size_t key_len ) {
+ return cipher_cost ( cipher, key_len, cipher_decrypt );
+}
Code Review / kvmfornfv.git / blobdiff