559 lines
17 KiB
C
559 lines
17 KiB
C
/*
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* Copyright (c) 2023, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <ti/driverlib/dl_aesadv.h>
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#ifdef __MSPM0_HAS_AESADV__
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static void DL_AESADV_loadData(
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volatile uint32_t *destPtr, const uint32_t *srcPtr, uint8_t numWords);
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static void DL_AESADV_readData(
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uint32_t *destPtr, volatile const uint32_t *srcPtr, uint8_t numWords);
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static const uint32_t *DL_AESADV_checkAlignmentAndReturnConstPtr(
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const uint8_t *ptr);
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static uint32_t *DL_AESADV_checkAlignmentAndReturnPtr(const uint8_t *ptr);
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DL_AESADV_STATUS DL_AESADV_setKey(
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AESADV_Regs *aesadv, const uint8_t *key, DL_AESADV_KEY_SIZE keySize)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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const uint32_t *keyAligned;
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keyAligned = DL_AESADV_checkAlignmentAndReturnConstPtr(key);
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if (keyAligned != NULL) {
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DL_AESADV_setKeyAligned(aesadv, keyAligned, keySize);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_setKeyAligned(AESADV_Regs *aesadv, const uint32_t *keyAligned,
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DL_AESADV_KEY_SIZE keySize)
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{
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uint8_t numWords;
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switch (keySize) {
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case DL_AESADV_KEY_SIZE_128_BIT:
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numWords = 4U;
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break;
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case DL_AESADV_KEY_SIZE_256_BIT:
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numWords = 8U;
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break;
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default:
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/* invalid key size*/
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numWords = 0U;
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break;
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}
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DL_Common_updateReg(
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&aesadv->CTRL, (uint32_t) keySize, AESADV_CTRL_KEYSIZE_MASK);
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DL_AESADV_loadData(&aesadv->KEY0, keyAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_setGCMHashKey(
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AESADV_Regs *aesadv, const uint8_t *hashKey)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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const uint32_t *hashKeyAligned;
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hashKeyAligned = DL_AESADV_checkAlignmentAndReturnConstPtr(hashKey);
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if (hashKeyAligned != NULL) {
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DL_AESADV_setGCMHashKeyAligned(aesadv, hashKeyAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_setGCMHashKeyAligned(
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AESADV_Regs *aesadv, const uint32_t *hashKeyAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_loadData(&aesadv->GHASH_H0, hashKeyAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_setSecondKey(
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AESADV_Regs *aesadv, const uint8_t *secondKey)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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const uint32_t *secondKeyAligned;
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secondKeyAligned = DL_AESADV_checkAlignmentAndReturnConstPtr(secondKey);
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if (secondKeyAligned != NULL) {
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DL_AESADV_setSecondKeyAligned(aesadv, secondKeyAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_setSecondKeyAligned(
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AESADV_Regs *aesadv, const uint32_t *secondKeyAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_loadData(&aesadv->GHASH_H0, secondKeyAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_setThirdKey(
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AESADV_Regs *aesadv, const uint8_t *thirdKey)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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const uint32_t *thirdKeyAligned;
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thirdKeyAligned = DL_AESADV_checkAlignmentAndReturnConstPtr(thirdKey);
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if (thirdKeyAligned != NULL) {
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DL_AESADV_setThirdKeyAligned(aesadv, thirdKeyAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_setThirdKeyAligned(
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AESADV_Regs *aesadv, const uint32_t *thirdKeyAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_loadData(&aesadv->GCMCCM_TAG0, thirdKeyAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_loadIntermediateTAG(
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AESADV_Regs *aesadv, const uint8_t *tag)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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const uint32_t *tagAligned;
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tagAligned = DL_AESADV_checkAlignmentAndReturnConstPtr(tag);
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if (tagAligned != NULL) {
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DL_AESADV_loadIntermediateTAGAligned(aesadv, tagAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_loadIntermediateTAGAligned(
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AESADV_Regs *aesadv, const uint32_t *tagAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_loadData(&aesadv->GCMCCM_TAG0, tagAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_loadInitializationVector(
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AESADV_Regs *aesadv, const uint8_t *iv)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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uint32_t *ivAligned;
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ivAligned = DL_AESADV_checkAlignmentAndReturnPtr(iv);
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if (ivAligned != NULL) {
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DL_AESADV_loadInitializationVectorAligned(aesadv, ivAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_loadInitializationVectorAligned(
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AESADV_Regs *aesadv, const uint32_t *ivAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_loadData(&aesadv->IV0, ivAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_readInitializationVector(
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AESADV_Regs *aesadv, const uint8_t *iv)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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uint32_t *ivAligned;
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ivAligned = DL_AESADV_checkAlignmentAndReturnPtr(iv);
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if (ivAligned != NULL) {
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DL_AESADV_readInitializationVectorAligned(aesadv, ivAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_readInitializationVectorAligned(
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AESADV_Regs *aesadv, uint32_t *ivAligned)
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{
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uint8_t numWords = 4U;
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volatile uint32_t *sourcePtr;
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sourcePtr = (volatile uint32_t *) &aesadv->IV0;
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DL_AESADV_readData(ivAligned, sourcePtr, numWords);
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return;
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}
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void DL_AESADV_loadCCMNonceAndCounter(
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AESADV_Regs *aesadv, uint8_t *nonce, DL_AESADV_CCM_CTR_WIDTH ctrWidth)
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{
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uint8_t *noncePtr = nonce;
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uint8_t numWords = 4U;
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uint32_t ivArray[4];
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uint8_t *ivPtr = (uint8_t *) &ivArray[0];
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uint8_t i;
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/* calculation of the nonce length. (Length described in table in header) */
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uint8_t ccml = (uint8_t)((uint32_t) ctrWidth >> AESADV_CTRL_CCML_OFS);
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uint8_t counterWidthInBytes = (ccml + 1U);
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/* subtracting the counterWidth in bytes as well as the flag byte */
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uint8_t nonceWidthInBytes = 14U - ccml;
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*ivPtr++ = ccml;
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/* addition of the Nonce */
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for (i = 0; i < nonceWidthInBytes; i++) {
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*ivPtr++ = *noncePtr++;
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}
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/* Counter is always initialized to zeros */
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for (i = 0; i < counterWidthInBytes; i++) {
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*ivPtr++ = 0x00;
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}
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DL_AESADV_loadData(&aesadv->IV0, ivArray, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_loadInputData(
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AESADV_Regs *aesadv, const uint8_t *data)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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uint32_t *dataAligned;
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dataAligned = DL_AESADV_checkAlignmentAndReturnPtr(data);
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if (dataAligned != NULL) {
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DL_AESADV_loadInputDataAligned(aesadv, dataAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_loadInputDataAligned(
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AESADV_Regs *aesadv, const uint32_t *dataAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_loadData(&aesadv->DATA0, dataAligned, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_readOutputData(
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const AESADV_Regs *aesadv, const uint8_t *data)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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uint32_t *dataAligned;
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dataAligned = DL_AESADV_checkAlignmentAndReturnPtr(data);
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if (dataAligned != NULL) {
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DL_AESADV_readOutputDataAligned(aesadv, dataAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_readOutputDataAligned(
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const AESADV_Regs *aesadv, uint32_t *dataAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_readData(dataAligned, &aesadv->DATA0, numWords);
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return;
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}
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DL_AESADV_STATUS DL_AESADV_readTAG(
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const AESADV_Regs *aesadv, const uint8_t *tag)
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{
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DL_AESADV_STATUS status = DL_AESADV_STATUS_SUCCESS;
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uint32_t *tagAligned;
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tagAligned = DL_AESADV_checkAlignmentAndReturnPtr(tag);
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if (tagAligned != NULL) {
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DL_AESADV_readTAGAligned(aesadv, tagAligned);
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} else {
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status = DL_AESADV_STATUS_UNALIGNED_ACCESS;
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}
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return status;
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}
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void DL_AESADV_readTAGAligned(const AESADV_Regs *aesadv, uint32_t *tagAligned)
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{
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uint8_t numWords = 4U;
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DL_AESADV_readData(tagAligned, &aesadv->TAG0, numWords);
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return;
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}
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void DL_AESADV_initECB(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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DL_Common_updateReg(&aesadv->CTRL,
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((uint32_t) DL_AESADV_MODE_ECB | config->direction),
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((uint32_t) DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initCBC(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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DL_Common_updateReg(&aesadv->CTRL,
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((uint32_t) DL_AESADV_MODE_CBC | config->direction),
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((uint32_t) DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_loadInitializationVector(aesadv, config->iv);
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initCFB(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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DL_Common_updateReg(&aesadv->CTRL,
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(((uint32_t) DL_AESADV_MODE_CFB) | ((uint32_t) config->direction) |
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((uint32_t) config->cfb_fbWidth)),
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(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_CTR_WIDTH_MASK | AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_loadInitializationVector(aesadv, config->iv);
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initOFB(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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DL_Common_updateReg(&aesadv->CTRL,
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(((uint32_t) DL_AESADV_MODE_OFB) | ((uint32_t) config->direction) |
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((uint32_t) config->cfb_fbWidth)),
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(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_CTR_WIDTH_MASK | AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_loadInitializationVector(aesadv, config->iv);
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initCTR(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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DL_Common_updateReg(&aesadv->CTRL,
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(((uint32_t) DL_AESADV_MODE_CTR) | ((uint32_t) config->direction) |
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((uint32_t) config->ctr_ctrWidth)),
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(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_CTR_WIDTH_MASK | AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_loadInitializationVector(aesadv, config->iv);
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initICM(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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DL_Common_updateReg(&aesadv->CTRL,
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((uint32_t) DL_AESADV_MODE_ICM | ((uint32_t) config->direction)),
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(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_loadInitializationVector(aesadv, config->iv);
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initCMAC(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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uint32_t zeroArray[4] = {0x00000000, 0x00000000, 0x00000000, 0x00000000};
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/* Set the second and third keys, and zero out the initialization vector */
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DL_AESADV_setSecondKey(aesadv, config->k1);
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DL_AESADV_setThirdKey(aesadv, config->k2);
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DL_AESADV_loadInitializationVectorAligned(aesadv, &zeroArray[0]);
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DL_Common_updateReg(&aesadv->CTRL,
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((uint32_t) DL_AESADV_MODE_CMAC | ((uint32_t) DL_AESADV_DIR_ENCRYPT) |
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((uint32_t) AESADV_CTRL_SAVE_CNTXT_ENABLE)),
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(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
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}
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void DL_AESADV_initCBCMAC(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
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{
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uint32_t zeroArray[4] = {0x00000000, 0x00000000, 0x00000000, 0x00000000};
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/* Zero out the second and third keys and the IV for CBC-MAC as per spec */
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DL_AESADV_setSecondKeyAligned(aesadv, &zeroArray[0]);
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DL_AESADV_setThirdKeyAligned(aesadv, &zeroArray[0]);
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DL_AESADV_loadInitializationVectorAligned(aesadv, &zeroArray[0]);
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DL_Common_updateReg(&aesadv->CTRL,
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((uint32_t) DL_AESADV_MODE_CBCMAC |
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((uint32_t) DL_AESADV_DIR_ENCRYPT) |
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((uint32_t) AESADV_CTRL_SAVE_CNTXT_ENABLE)),
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(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
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AESADV_CTRL_SAVE_CNTXT_MASK));
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DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
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DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
|
|
}
|
|
|
|
void DL_AESADV_initGCM(AESADV_Regs *aesadv, const DL_AESADV_Config *config)
|
|
{
|
|
uint32_t zeroArray[4] = {0x00000000, 0x00000000, 0x00000000, 0x00000000};
|
|
|
|
/* Zero out the intermediate TAG for GCM as per spec */
|
|
DL_AESADV_loadIntermediateTAGAligned(aesadv, &zeroArray[0]);
|
|
|
|
DL_AESADV_loadInitializationVector(aesadv, config->iv);
|
|
|
|
DL_Common_updateReg(&aesadv->CTRL,
|
|
(((uint32_t) config->mode) | ((uint32_t) config->direction) |
|
|
((uint32_t) DL_AESADV_CTR_WIDTH_32_BIT |
|
|
(uint32_t) AESADV_CTRL_SAVE_CNTXT_ENABLE)),
|
|
((uint32_t) DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK |
|
|
AESADV_CTRL_CTR_WIDTH_MASK | AESADV_CTRL_SAVE_CNTXT_MASK));
|
|
|
|
DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
|
|
DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
|
|
|
|
DL_AESADV_setAADLength(aesadv, config->aadLength);
|
|
}
|
|
|
|
void DL_AESADV_initCCM(AESADV_Regs *aesadv, DL_AESADV_Config *config)
|
|
{
|
|
DL_AESADV_loadCCMNonceAndCounter(
|
|
aesadv, config->nonce, config->ccm_ctrWidth);
|
|
|
|
DL_Common_updateReg(&aesadv->CTRL,
|
|
(((uint32_t) DL_AESADV_MODE_CCM) | ((uint32_t) config->direction) |
|
|
((uint32_t) config->ccm_ctrWidth) |
|
|
((uint32_t) config->ccm_tagWidth) |
|
|
((uint32_t) DL_AESADV_CTR_WIDTH_64_BIT) |
|
|
((uint32_t) AESADV_CTRL_SAVE_CNTXT_ENABLE)),
|
|
(DL_AESADV_MODE_MASK | AESADV_CTRL_DIR_MASK | AESADV_CTRL_CCML_MASK |
|
|
AESADV_CTRL_CCMM_MASK | AESADV_CTRL_CTR_WIDTH_MASK |
|
|
AESADV_CTRL_SAVE_CNTXT_MASK));
|
|
|
|
DL_AESADV_setUpperCryptoLength(aesadv, config->upperCryptoLength);
|
|
DL_AESADV_setLowerCryptoLength(aesadv, config->lowerCryptoLength);
|
|
|
|
DL_AESADV_setAADLength(aesadv, config->aadLength);
|
|
}
|
|
|
|
static void DL_AESADV_loadData(
|
|
volatile uint32_t *destPtr, const uint32_t *srcPtr, uint8_t numWords)
|
|
{
|
|
uint8_t i;
|
|
for (i = 0; i < numWords; i++) {
|
|
*destPtr++ = *srcPtr++;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void DL_AESADV_readData(
|
|
uint32_t *destPtr, volatile const uint32_t *srcPtr, uint8_t numWords)
|
|
{
|
|
uint8_t i;
|
|
for (i = 0; i < numWords; i++) {
|
|
*destPtr++ = *srcPtr++;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static const uint32_t *DL_AESADV_checkAlignmentAndReturnConstPtr(
|
|
const uint8_t *ptr)
|
|
{
|
|
uint32_t address = (uint32_t) ptr;
|
|
const uint32_t *alignedPtr;
|
|
if ((address << 30) != 0x00000000u) {
|
|
/* Unaligned access */
|
|
alignedPtr = NULL;
|
|
} else {
|
|
/* Aligned Access */
|
|
alignedPtr = (const uint32_t *) address;
|
|
}
|
|
return alignedPtr;
|
|
}
|
|
|
|
static uint32_t *DL_AESADV_checkAlignmentAndReturnPtr(const uint8_t *ptr)
|
|
{
|
|
uint32_t address = (uint32_t) ptr;
|
|
uint32_t *alignedPtr;
|
|
if ((address << 30) != 0x00000000u) {
|
|
/* Unaligned access */
|
|
alignedPtr = NULL;
|
|
} else {
|
|
/* Aligned Access */
|
|
alignedPtr = (uint32_t *) address;
|
|
}
|
|
return alignedPtr;
|
|
}
|
|
|
|
#endif /* __MSPM0_HAS_AESADV__ */
|