Diff: targets/TARGET_NUVOTON/TARGET_NUC472/crypto/des/des_alt_sw.h

Revision:

149:156823d33999

diff -r 21d94c44109e -r 156823d33999 targets/TARGET_NUVOTON/TARGET_NUC472/crypto/des/des_alt_sw.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/crypto/des/des_alt_sw.h	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,283 @@
+/**
+ * \file des.h
+ *
+ * \brief DES block cipher
+ *
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+#ifndef MBEDTLS_DES_ALT_SW_H
+#define MBEDTLS_DES_ALT_SW_H
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_DES_C)
+#if defined(MBEDTLS_DES_ALT)
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          DES context structure
+ */
+typedef struct
+{
+    uint32_t sk[32];            /*!<  DES subkeys       */
+}
+mbedtls_des_sw_context;
+
+/**
+ * \brief          Triple-DES context structure
+ */
+typedef struct
+{
+    uint32_t sk[96];            /*!<  3DES subkeys      */
+}
+mbedtls_des3_sw_context;
+
+/**
+ * \brief          Initialize DES context
+ *
+ * \param ctx      DES context to be initialized
+ */
+void mbedtls_des_sw_init( mbedtls_des_sw_context *ctx );
+
+/**
+ * \brief          Clear DES context
+ *
+ * \param ctx      DES context to be cleared
+ */
+void mbedtls_des_sw_free( mbedtls_des_sw_context *ctx );
+
+/**
+ * \brief          Initialize Triple-DES context
+ *
+ * \param ctx      DES3 context to be initialized
+ */
+void mbedtls_des3_sw_init( mbedtls_des3_sw_context *ctx );
+
+/**
+ * \brief          Clear Triple-DES context
+ *
+ * \param ctx      DES3 context to be cleared
+ */
+void mbedtls_des3_sw_free( mbedtls_des3_sw_context *ctx );
+
+/**
+ * \brief          Set key parity on the given key to odd.
+ *
+ *                 DES keys are 56 bits long, but each byte is padded with
+ *                 a parity bit to allow verification.
+ *
+ * \param key      8-byte secret key
+ */
+void mbedtls_des_sw_key_set_parity( unsigned char key[MBEDTLS_DES_KEY_SIZE] );
+
+/**
+ * \brief          Check that key parity on the given key is odd.
+ *
+ *                 DES keys are 56 bits long, but each byte is padded with
+ *                 a parity bit to allow verification.
+ *
+ * \param key      8-byte secret key
+ *
+ * \return         0 is parity was ok, 1 if parity was not correct.
+ */
+int mbedtls_des_sw_key_check_key_parity( const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
+
+/**
+ * \brief          Check that key is not a weak or semi-weak DES key
+ *
+ * \param key      8-byte secret key
+ *
+ * \return         0 if no weak key was found, 1 if a weak key was identified.
+ */
+int mbedtls_des_sw_key_check_weak( const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
+
+/**
+ * \brief          DES key schedule (56-bit, encryption)
+ *
+ * \param ctx      DES context to be initialized
+ * \param key      8-byte secret key
+ *
+ * \return         0
+ */
+int mbedtls_des_sw_setkey_enc( mbedtls_des_sw_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
+
+/**
+ * \brief          DES key schedule (56-bit, decryption)
+ *
+ * \param ctx      DES context to be initialized
+ * \param key      8-byte secret key
+ *
+ * \return         0
+ */
+int mbedtls_des_sw_setkey_dec( mbedtls_des_sw_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
+
+/**
+ * \brief          Triple-DES key schedule (112-bit, encryption)
+ *
+ * \param ctx      3DES context to be initialized
+ * \param key      16-byte secret key
+ *
+ * \return         0
+ */
+int mbedtls_des3_sw_set2key_enc( mbedtls_des3_sw_context *ctx,
+                      const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] );
+
+/**
+ * \brief          Triple-DES key schedule (112-bit, decryption)
+ *
+ * \param ctx      3DES context to be initialized
+ * \param key      16-byte secret key
+ *
+ * \return         0
+ */
+int mbedtls_des3_sw_set2key_dec( mbedtls_des3_sw_context *ctx,
+                      const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] );
+
+/**
+ * \brief          Triple-DES key schedule (168-bit, encryption)
+ *
+ * \param ctx      3DES context to be initialized
+ * \param key      24-byte secret key
+ *
+ * \return         0
+ */
+int mbedtls_des3_sw_set3key_enc( mbedtls_des3_sw_context *ctx,
+                      const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] );
+
+/**
+ * \brief          Triple-DES key schedule (168-bit, decryption)
+ *
+ * \param ctx      3DES context to be initialized
+ * \param key      24-byte secret key
+ *
+ * \return         0
+ */
+int mbedtls_des3_sw_set3key_dec( mbedtls_des3_sw_context *ctx,
+                      const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] );
+
+/**
+ * \brief          DES-ECB block encryption/decryption
+ *
+ * \param ctx      DES context
+ * \param input    64-bit input block
+ * \param output   64-bit output block
+ *
+ * \return         0 if successful
+ */
+int mbedtls_des_sw_crypt_ecb( mbedtls_des_sw_context *ctx,
+                    const unsigned char input[8],
+                    unsigned char output[8] );
+
+#if defined(MBEDTLS_CIPHER_MODE_CBC)
+/**
+ * \brief          DES-CBC buffer encryption/decryption
+ *
+ * \note           Upon exit, the content of the IV is updated so that you can
+ *                 call the function same function again on the following
+ *                 block(s) of data and get the same result as if it was
+ *                 encrypted in one call. This allows a "streaming" usage.
+ *                 If on the other hand you need to retain the contents of the
+ *                 IV, you should either save it manually or use the cipher
+ *                 module instead.
+ *
+ * \param ctx      DES context
+ * \param mode     MBEDTLS_DES_ENCRYPT or MBEDTLS_DES_DECRYPT
+ * \param length   length of the input data
+ * \param iv       initialization vector (updated after use)
+ * \param input    buffer holding the input data
+ * \param output   buffer holding the output data
+ */
+int mbedtls_des_sw_crypt_cbc( mbedtls_des_sw_context *ctx,
+                    int mode,
+                    size_t length,
+                    unsigned char iv[8],
+                    const unsigned char *input,
+                    unsigned char *output );
+#endif /* MBEDTLS_CIPHER_MODE_CBC */
+
+/**
+ * \brief          3DES-ECB block encryption/decryption
+ *
+ * \param ctx      3DES context
+ * \param input    64-bit input block
+ * \param output   64-bit output block
+ *
+ * \return         0 if successful
+ */
+int mbedtls_des3_sw_crypt_ecb( mbedtls_des3_sw_context *ctx,
+                     const unsigned char input[8],
+                     unsigned char output[8] );
+
+#if defined(MBEDTLS_CIPHER_MODE_CBC)
+/**
+ * \brief          3DES-CBC buffer encryption/decryption
+ *
+ * \note           Upon exit, the content of the IV is updated so that you can
+ *                 call the function same function again on the following
+ *                 block(s) of data and get the same result as if it was
+ *                 encrypted in one call. This allows a "streaming" usage.
+ *                 If on the other hand you need to retain the contents of the
+ *                 IV, you should either save it manually or use the cipher
+ *                 module instead.
+ *
+ * \param ctx      3DES context
+ * \param mode     MBEDTLS_DES_ENCRYPT or MBEDTLS_DES_DECRYPT
+ * \param length   length of the input data
+ * \param iv       initialization vector (updated after use)
+ * \param input    buffer holding the input data
+ * \param output   buffer holding the output data
+ *
+ * \return         0 if successful, or MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH
+ */
+int mbedtls_des3_sw_crypt_cbc( mbedtls_des3_sw_context *ctx,
+                     int mode,
+                     size_t length,
+                     unsigned char iv[8],
+                     const unsigned char *input,
+                     unsigned char *output );
+#endif /* MBEDTLS_CIPHER_MODE_CBC */
+
+/**
+ * \brief          Internal function for key expansion.
+ *                 (Only exposed to allow overriding it,
+ *                 see MBEDTLS_DES_SETKEY_ALT)
+ *
+ * \param SK       Round keys
+ * \param key      Base key
+ */
+void mbedtls_des_sw_setkey( uint32_t SK[32],
+                         const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MBEDTLS_DES_ALT */
+#endif /* MBEDTLS_DES_C */
+
+#endif /* des.h */