Subversion Repositories avs_aes

#include <avs_aes.h>

#include <string.h>

void avs_aes_init(avs_aes_handle* context){

        context->key    = (unsigned int*) KEY_ADDR;

        context->payload= (unsigned int*) DATA_ADDR;

        context->result = (unsigned int*) RESULT_ADDR;

        context->control        = (unsigned int*) AESCTRLWD;

        *(context->control) = 0x00000000;

}

void avs_aes_setKey(avs_aes_handle* context, unsigned int* key){

        int i=0;

        unsigned int* target_ptr = (unsigned int* )context->key;

        // Invalidate old key;

        *(context->control) &= (~0x00000080);

        for(i=0; i<KEYWORDS; i++){

                *(target_ptr++) = *(key++);

        }

        // validate key;

        *(context->control) |= 0x00000080;

}

void avs_aes_setPayload(avs_aes_handle* context, unsigned int* payload){

        int i=0;

        unsigned int* target_ptr = (unsigned int* )context->payload;

        for(i=0; i<4; i++){

                *(target_ptr++) = *(payload++);

        }

}

void avs_aes_setKeyvalid(avs_aes_handle* context){

        *(context->control) |= 0x00000080;

}

void avs_aes_encrypt(avs_aes_handle* context){

        *(context->control) |= 0x00000001;

}

void avs_aes_decrypt(avs_aes_handle* context){

        *(context->control) |= 0x00000002;

}

int avs_aes_isBusy(avs_aes_handle* context){

        unsigned int mycontrol = *(context->control);

        return mycontrol & 0x03;

}