Jim Flynn / Mbed OS wifi_Example

wifi test

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easy-connect/stm-spirit1-rf-driver/source/libs/spirit1/SPIRIT1_Library/Src/SPIRIT_Aes.c@0:24d3eb812fd4, 2018-09-05 (annotated)

Committer:
JMF
Date:
Wed Sep 05 14:28:24 2018 +0000
Revision:
0:24d3eb812fd4
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 0:24d3eb812fd4 1 /**
JMF 0:24d3eb812fd4 2 ******************************************************************************
JMF 0:24d3eb812fd4 3 * @file SPIRIT_Aes.c
JMF 0:24d3eb812fd4 4 * @author VMA division - AMS
JMF 0:24d3eb812fd4 5 * @version 3.2.2
JMF 0:24d3eb812fd4 6 * @date 08-July-2015
JMF 0:24d3eb812fd4 7 * @brief Configuration and management of SPIRIT AES Engine.
JMF 0:24d3eb812fd4 8 *
JMF 0:24d3eb812fd4 9 * @attention
JMF 0:24d3eb812fd4 10 *
JMF 0:24d3eb812fd4 11 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
JMF 0:24d3eb812fd4 12 *
JMF 0:24d3eb812fd4 13 * Redistribution and use in source and binary forms, with or without modification,
JMF 0:24d3eb812fd4 14 * are permitted provided that the following conditions are met:
JMF 0:24d3eb812fd4 15 * 1. Redistributions of source code must retain the above copyright notice,
JMF 0:24d3eb812fd4 16 * this list of conditions and the following disclaimer.
JMF 0:24d3eb812fd4 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
JMF 0:24d3eb812fd4 18 * this list of conditions and the following disclaimer in the documentation
JMF 0:24d3eb812fd4 19 * and/or other materials provided with the distribution.
JMF 0:24d3eb812fd4 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
JMF 0:24d3eb812fd4 21 * may be used to endorse or promote products derived from this software
JMF 0:24d3eb812fd4 22 * without specific prior written permission.
JMF 0:24d3eb812fd4 23 *
JMF 0:24d3eb812fd4 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
JMF 0:24d3eb812fd4 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
JMF 0:24d3eb812fd4 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
JMF 0:24d3eb812fd4 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
JMF 0:24d3eb812fd4 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
JMF 0:24d3eb812fd4 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
JMF 0:24d3eb812fd4 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
JMF 0:24d3eb812fd4 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
JMF 0:24d3eb812fd4 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
JMF 0:24d3eb812fd4 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
JMF 0:24d3eb812fd4 34 *
JMF 0:24d3eb812fd4 35 ******************************************************************************
JMF 0:24d3eb812fd4 36 */
JMF 0:24d3eb812fd4 37
JMF 0:24d3eb812fd4 38
JMF 0:24d3eb812fd4 39 /* Includes ------------------------------------------------------------------*/
JMF 0:24d3eb812fd4 40 #include "SPIRIT_Aes.h"
JMF 0:24d3eb812fd4 41 #include "MCU_Interface.h"
JMF 0:24d3eb812fd4 42
JMF 0:24d3eb812fd4 43
JMF 0:24d3eb812fd4 44 /**
JMF 0:24d3eb812fd4 45 * @addtogroup SPIRIT_Libraries
JMF 0:24d3eb812fd4 46 * @{
JMF 0:24d3eb812fd4 47 */
JMF 0:24d3eb812fd4 48
JMF 0:24d3eb812fd4 49
JMF 0:24d3eb812fd4 50 /**
JMF 0:24d3eb812fd4 51 * @addtogroup SPIRIT_Aes
JMF 0:24d3eb812fd4 52 * @{
JMF 0:24d3eb812fd4 53 */
JMF 0:24d3eb812fd4 54
JMF 0:24d3eb812fd4 55
JMF 0:24d3eb812fd4 56 /**
JMF 0:24d3eb812fd4 57 * @defgroup Aes_Private_TypesDefinitions AES Private Types Definitions
JMF 0:24d3eb812fd4 58 * @{
JMF 0:24d3eb812fd4 59 */
JMF 0:24d3eb812fd4 60
JMF 0:24d3eb812fd4 61 /**
JMF 0:24d3eb812fd4 62 * @}
JMF 0:24d3eb812fd4 63 */
JMF 0:24d3eb812fd4 64
JMF 0:24d3eb812fd4 65
JMF 0:24d3eb812fd4 66 /**
JMF 0:24d3eb812fd4 67 * @defgroup Aes_Private_Defines AES Private Defines
JMF 0:24d3eb812fd4 68 * @{
JMF 0:24d3eb812fd4 69 */
JMF 0:24d3eb812fd4 70
JMF 0:24d3eb812fd4 71 /**
JMF 0:24d3eb812fd4 72 * @}
JMF 0:24d3eb812fd4 73 */
JMF 0:24d3eb812fd4 74
JMF 0:24d3eb812fd4 75
JMF 0:24d3eb812fd4 76 /**
JMF 0:24d3eb812fd4 77 * @defgroup Aes_Private_Macros AES Private Macros
JMF 0:24d3eb812fd4 78 * @{
JMF 0:24d3eb812fd4 79 */
JMF 0:24d3eb812fd4 80
JMF 0:24d3eb812fd4 81 /**
JMF 0:24d3eb812fd4 82 * @}
JMF 0:24d3eb812fd4 83 */
JMF 0:24d3eb812fd4 84
JMF 0:24d3eb812fd4 85
JMF 0:24d3eb812fd4 86 /**
JMF 0:24d3eb812fd4 87 * @defgroup Aes_Private_Variables AES Private Variables
JMF 0:24d3eb812fd4 88 * @{
JMF 0:24d3eb812fd4 89 */
JMF 0:24d3eb812fd4 90
JMF 0:24d3eb812fd4 91 /**
JMF 0:24d3eb812fd4 92 * @}
JMF 0:24d3eb812fd4 93 */
JMF 0:24d3eb812fd4 94
JMF 0:24d3eb812fd4 95
JMF 0:24d3eb812fd4 96 /**
JMF 0:24d3eb812fd4 97 * @defgroup Aes_Private_FunctionPrototypes AES Private Function Prototypes
JMF 0:24d3eb812fd4 98 * @{
JMF 0:24d3eb812fd4 99 */
JMF 0:24d3eb812fd4 100
JMF 0:24d3eb812fd4 101 /**
JMF 0:24d3eb812fd4 102 * @}
JMF 0:24d3eb812fd4 103 */
JMF 0:24d3eb812fd4 104
JMF 0:24d3eb812fd4 105
JMF 0:24d3eb812fd4 106 /**
JMF 0:24d3eb812fd4 107 * @defgroup Aes_Private_Functions AES Private Functions
JMF 0:24d3eb812fd4 108 * @{
JMF 0:24d3eb812fd4 109 */
JMF 0:24d3eb812fd4 110
JMF 0:24d3eb812fd4 111
JMF 0:24d3eb812fd4 112 /**
JMF 0:24d3eb812fd4 113 * @brief Enables or Disables the AES engine.
JMF 0:24d3eb812fd4 114 * @param xNewState new state for AES engine.
JMF 0:24d3eb812fd4 115 * This parameter can be: S_ENABLE or S_DISABLE.
JMF 0:24d3eb812fd4 116 * @retval None
JMF 0:24d3eb812fd4 117 */
JMF 0:24d3eb812fd4 118 void SpiritAesMode(SpiritFunctionalState xNewState)
JMF 0:24d3eb812fd4 119 {
JMF 0:24d3eb812fd4 120 uint8_t tempRegValue = 0x00;
JMF 0:24d3eb812fd4 121
JMF 0:24d3eb812fd4 122 /* Check the parameters */
JMF 0:24d3eb812fd4 123 s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(xNewState));
JMF 0:24d3eb812fd4 124
JMF 0:24d3eb812fd4 125 /* Modifies the register value */
JMF 0:24d3eb812fd4 126 g_xStatus = SpiritSpiReadRegisters(ANA_FUNC_CONF0_BASE, 1, &tempRegValue);
JMF 0:24d3eb812fd4 127 if(xNewState == S_ENABLE)
JMF 0:24d3eb812fd4 128 {
JMF 0:24d3eb812fd4 129 tempRegValue |= AES_MASK;
JMF 0:24d3eb812fd4 130 }
JMF 0:24d3eb812fd4 131 else
JMF 0:24d3eb812fd4 132 {
JMF 0:24d3eb812fd4 133 tempRegValue &= ~AES_MASK;
JMF 0:24d3eb812fd4 134 }
JMF 0:24d3eb812fd4 135
JMF 0:24d3eb812fd4 136 /* Writes the ANA_FUNC_CONF0 register to enable or disable the AES engine */
JMF 0:24d3eb812fd4 137 g_xStatus = SpiritSpiWriteRegisters(ANA_FUNC_CONF0_BASE, 1, &tempRegValue);
JMF 0:24d3eb812fd4 138
JMF 0:24d3eb812fd4 139 }
JMF 0:24d3eb812fd4 140
JMF 0:24d3eb812fd4 141
JMF 0:24d3eb812fd4 142 /**
JMF 0:24d3eb812fd4 143 * @brief Writes the data to encrypt or decrypt, or the encryption key for the
JMF 0:24d3eb812fd4 144 * derive decryption key operation into the AES_DATA_IN registers.
JMF 0:24d3eb812fd4 145 * @param pcBufferDataIn pointer to the user data buffer. The first byte of the array
JMF 0:24d3eb812fd4 146 * shall be the MSB byte and it will be put in the AES_DATA_IN[0] register, while
JMF 0:24d3eb812fd4 147 * the last one shall be the LSB and it will be put in the AES_DATA_IN[cDataLength-1]
JMF 0:24d3eb812fd4 148 * register. If data to write are less than 16 bytes the remaining AES_DATA_IN registers
JMF 0:24d3eb812fd4 149 * will be filled with bytes equal to 0. This parameter is an uint8_t*.
JMF 0:24d3eb812fd4 150 * @param cDataLength length of data in bytes.
JMF 0:24d3eb812fd4 151 * This parameter is an uint8_t.
JMF 0:24d3eb812fd4 152 * @retval None
JMF 0:24d3eb812fd4 153 */
JMF 0:24d3eb812fd4 154 void SpiritAesWriteDataIn(uint8_t* pcBufferDataIn, uint8_t cDataLength)
JMF 0:24d3eb812fd4 155 {
JMF 0:24d3eb812fd4 156 uint8_t i, dataInArray[16];
JMF 0:24d3eb812fd4 157
JMF 0:24d3eb812fd4 158 /* Verifies that there are no more than 16 bytes */
JMF 0:24d3eb812fd4 159 (cDataLength>16) ? (cDataLength=16) : cDataLength;
JMF 0:24d3eb812fd4 160
JMF 0:24d3eb812fd4 161 /* Fill the dataInArray with the data buffer, using padding */
JMF 0:24d3eb812fd4 162 for(i=0;i<16;i++)
JMF 0:24d3eb812fd4 163 {
JMF 0:24d3eb812fd4 164 (i<(16 - cDataLength)) ? (dataInArray[i]=0):(dataInArray[i]=pcBufferDataIn[15-i]);
JMF 0:24d3eb812fd4 165
JMF 0:24d3eb812fd4 166 }
JMF 0:24d3eb812fd4 167
JMF 0:24d3eb812fd4 168 /* Writes the AES_DATA_IN registers */
JMF 0:24d3eb812fd4 169 g_xStatus = SpiritSpiWriteRegisters(AES_DATA_IN_15_BASE, 16, dataInArray);
JMF 0:24d3eb812fd4 170
JMF 0:24d3eb812fd4 171 }
JMF 0:24d3eb812fd4 172
JMF 0:24d3eb812fd4 173
JMF 0:24d3eb812fd4 174 /**
JMF 0:24d3eb812fd4 175 * @brief Returns the encrypted or decrypted data or the decription key from the AES_DATA_OUT register.
JMF 0:24d3eb812fd4 176 * @param pcBufferDataOut pointer to the user data buffer. The AES_DATA_OUT[0]
JMF 0:24d3eb812fd4 177 * register value will be put as first element of the buffer (MSB), while the
JMF 0:24d3eb812fd4 178 * AES_DAT_OUT[cDataLength-1] register value will be put as last element of the buffer (LSB).
JMF 0:24d3eb812fd4 179 * This parameter is a uint8_t*.
JMF 0:24d3eb812fd4 180 * @param cDataLength length of data to read in bytes.
JMF 0:24d3eb812fd4 181 * This parameter is a uint8_t.
JMF 0:24d3eb812fd4 182 * @retval None
JMF 0:24d3eb812fd4 183 */
JMF 0:24d3eb812fd4 184 void SpiritAesReadDataOut(uint8_t* pcBufferDataOut, uint8_t cDataLength)
JMF 0:24d3eb812fd4 185 {
JMF 0:24d3eb812fd4 186 uint8_t address, dataOutArray[16];
JMF 0:24d3eb812fd4 187
JMF 0:24d3eb812fd4 188 /* Verifies that there are no more than 16 bytes */
JMF 0:24d3eb812fd4 189 (cDataLength>16) ? (cDataLength=16) : cDataLength;
JMF 0:24d3eb812fd4 190
JMF 0:24d3eb812fd4 191 /* Evaluates the address of AES_DATA_OUT from which start to read */
JMF 0:24d3eb812fd4 192 address = AES_DATA_OUT_15_BASE+16-cDataLength;
JMF 0:24d3eb812fd4 193
JMF 0:24d3eb812fd4 194 /* Reads the exact number of AES_DATA_OUT registers */
JMF 0:24d3eb812fd4 195 g_xStatus = (SpiritSpiReadRegisters(address, cDataLength, dataOutArray));
JMF 0:24d3eb812fd4 196
JMF 0:24d3eb812fd4 197 /* Copy in the user buffer the read values changing the order */
JMF 0:24d3eb812fd4 198 for(int i = (cDataLength-1); i>=0; i--)
JMF 0:24d3eb812fd4 199 {
JMF 0:24d3eb812fd4 200 *pcBufferDataOut = dataOutArray[i];
JMF 0:24d3eb812fd4 201 pcBufferDataOut++;
JMF 0:24d3eb812fd4 202 }
JMF 0:24d3eb812fd4 203
JMF 0:24d3eb812fd4 204 }
JMF 0:24d3eb812fd4 205
JMF 0:24d3eb812fd4 206
JMF 0:24d3eb812fd4 207 /**
JMF 0:24d3eb812fd4 208 * @brief Writes the encryption key into the AES_KEY_IN register.
JMF 0:24d3eb812fd4 209 * @param pcKey pointer to the buffer of 4 words containing the AES key.
JMF 0:24d3eb812fd4 210 * The first byte of the buffer shall be the most significant byte AES_KEY_0 of the AES key.
JMF 0:24d3eb812fd4 211 * The last byte of the buffer shall be the less significant byte AES_KEY_15 of the AES key.
JMF 0:24d3eb812fd4 212 * This parameter is an uint8_t*.
JMF 0:24d3eb812fd4 213 * @retval None
JMF 0:24d3eb812fd4 214 */
JMF 0:24d3eb812fd4 215 void SpiritAesWriteKey(uint8_t* pcKey)
JMF 0:24d3eb812fd4 216 {
JMF 0:24d3eb812fd4 217 uint8_t pcTempKey[16];
JMF 0:24d3eb812fd4 218 for (uint8_t i = 0; i < 16; i++)
JMF 0:24d3eb812fd4 219 {
JMF 0:24d3eb812fd4 220 pcTempKey[15-i] = pcKey[i];
JMF 0:24d3eb812fd4 221 }
JMF 0:24d3eb812fd4 222
JMF 0:24d3eb812fd4 223 /* Writes the AES_DATA_IN registers */
JMF 0:24d3eb812fd4 224 g_xStatus = SpiritSpiWriteRegisters(AES_KEY_IN_15_BASE, 16, pcTempKey);
JMF 0:24d3eb812fd4 225
JMF 0:24d3eb812fd4 226 }
JMF 0:24d3eb812fd4 227
JMF 0:24d3eb812fd4 228 /**
JMF 0:24d3eb812fd4 229 * @brief Returns the encryption/decryption key from the AES_KEY_IN register.
JMF 0:24d3eb812fd4 230 * @param pcKey pointer to the buffer of 4 words (16 bytes) containing the AES key.
JMF 0:24d3eb812fd4 231 * The first byte of the buffer shall be the most significant byte AES_KEY_0 of the AES key.
JMF 0:24d3eb812fd4 232 * The last byte of the buffer shall be the less significant byte AES_KEY_15 of the AES key.
JMF 0:24d3eb812fd4 233 * This parameter is an uint8_t*.
JMF 0:24d3eb812fd4 234 * @retval None
JMF 0:24d3eb812fd4 235 */
JMF 0:24d3eb812fd4 236 void SpiritAesReadKey(uint8_t* pcKey)
JMF 0:24d3eb812fd4 237 {
JMF 0:24d3eb812fd4 238 uint8_t pcTempKey[16];
JMF 0:24d3eb812fd4 239
JMF 0:24d3eb812fd4 240 /* Reads the AES_DATA_IN registers */
JMF 0:24d3eb812fd4 241 g_xStatus = SpiritSpiReadRegisters(AES_KEY_IN_15_BASE, 16, pcTempKey);
JMF 0:24d3eb812fd4 242
JMF 0:24d3eb812fd4 243
JMF 0:24d3eb812fd4 244 for (uint8_t i = 0; i < 16; i++)
JMF 0:24d3eb812fd4 245 pcKey[i] = pcTempKey[15-i];
JMF 0:24d3eb812fd4 246
JMF 0:24d3eb812fd4 247 }
JMF 0:24d3eb812fd4 248
JMF 0:24d3eb812fd4 249
JMF 0:24d3eb812fd4 250
JMF 0:24d3eb812fd4 251 /**
JMF 0:24d3eb812fd4 252 * @brief Derives the decryption key from a given encryption key.
JMF 0:24d3eb812fd4 253 * @param None.
JMF 0:24d3eb812fd4 254 * @retval None.
JMF 0:24d3eb812fd4 255 */
JMF 0:24d3eb812fd4 256 void SpiritAesDeriveDecKeyFromEnc(void)
JMF 0:24d3eb812fd4 257 {
JMF 0:24d3eb812fd4 258 /* Sends the COMMAND_AES_KEY command */
JMF 0:24d3eb812fd4 259 g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_KEY);
JMF 0:24d3eb812fd4 260
JMF 0:24d3eb812fd4 261 }
JMF 0:24d3eb812fd4 262
JMF 0:24d3eb812fd4 263
JMF 0:24d3eb812fd4 264 /**
JMF 0:24d3eb812fd4 265 * @brief Executes the encryption operation.
JMF 0:24d3eb812fd4 266 * @param None.
JMF 0:24d3eb812fd4 267 * @retval None.
JMF 0:24d3eb812fd4 268 */
JMF 0:24d3eb812fd4 269 void SpiritAesExecuteEncryption(void)
JMF 0:24d3eb812fd4 270 {
JMF 0:24d3eb812fd4 271 /* Sends the COMMAND_AES_ENC command */
JMF 0:24d3eb812fd4 272 g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_ENC);
JMF 0:24d3eb812fd4 273
JMF 0:24d3eb812fd4 274 }
JMF 0:24d3eb812fd4 275
JMF 0:24d3eb812fd4 276
JMF 0:24d3eb812fd4 277 /**
JMF 0:24d3eb812fd4 278 * @brief Executes the decryption operation.
JMF 0:24d3eb812fd4 279 * @param None.
JMF 0:24d3eb812fd4 280 * @retval None.
JMF 0:24d3eb812fd4 281 */
JMF 0:24d3eb812fd4 282 void SpiritAesExecuteDecryption(void)
JMF 0:24d3eb812fd4 283 {
JMF 0:24d3eb812fd4 284 /* Sends the COMMAND_AES_DEC command */
JMF 0:24d3eb812fd4 285 g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_DEC);
JMF 0:24d3eb812fd4 286
JMF 0:24d3eb812fd4 287 }
JMF 0:24d3eb812fd4 288
JMF 0:24d3eb812fd4 289
JMF 0:24d3eb812fd4 290 /**
JMF 0:24d3eb812fd4 291 * @brief Executes the key derivation and the decryption operation.
JMF 0:24d3eb812fd4 292 * @param None.
JMF 0:24d3eb812fd4 293 * @retval None.
JMF 0:24d3eb812fd4 294 */
JMF 0:24d3eb812fd4 295 void SpiritAesDeriveDecKeyExecuteDec(void)
JMF 0:24d3eb812fd4 296 {
JMF 0:24d3eb812fd4 297 /* Sends the COMMAND_AES_KEY_DEC command */
JMF 0:24d3eb812fd4 298 g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_KEY_DEC);
JMF 0:24d3eb812fd4 299
JMF 0:24d3eb812fd4 300 }
JMF 0:24d3eb812fd4 301
JMF 0:24d3eb812fd4 302
JMF 0:24d3eb812fd4 303 /**
JMF 0:24d3eb812fd4 304 * @}
JMF 0:24d3eb812fd4 305 */
JMF 0:24d3eb812fd4 306
JMF 0:24d3eb812fd4 307
JMF 0:24d3eb812fd4 308 /**
JMF 0:24d3eb812fd4 309 * @}
JMF 0:24d3eb812fd4 310 */
JMF 0:24d3eb812fd4 311
JMF 0:24d3eb812fd4 312
JMF 0:24d3eb812fd4 313 /**
JMF 0:24d3eb812fd4 314 * @}
JMF 0:24d3eb812fd4 315 */
JMF 0:24d3eb812fd4 316
JMF 0:24d3eb812fd4 317
JMF 0:24d3eb812fd4 318
JMF 0:24d3eb812fd4 319 /******************* (C) COPYRIGHT 2015 STMicroelectronics *****END OF FILE****/