/*****************************************************************************
* 函 数 名 : crypto_rsa_decrypt
*
* 功能描述 : 使用保存在NV中的改制用RSA公钥，对输入的数据解密。
*
* 输入参数 : cipher_data: 待解密数据。
* cipher_len: 待解密数据长度。(byte)
* rsa_key: RSA公钥buffer指针
* rsa_len: RSA公钥buffer长度。(byte)
* len: 解密后的数据的存放buffer的buffer size。(byte)(没有检查)
*
* 输出参数 : data: 解密后的数据的存放buffer。
* len: 解密后的数据的实际长度。(byte)
*
* 返 回 值 : BSP_OK: 解密成功。
* BSP_ERROR: 解密失败。
*
* 其它说明 : len为输入/输出参数，传入的len变量所用内存必须可写回。
* 所以避免直接传入类似sizeof()的函数调用结果。
*
*****************************************************************************/
int crypto_rsa_decrypt_o (char *cipher_data, int cipher_len, char *rsa_key, int rsa_klen, char *data, int *len)
{
//rsa_public_key* p_rsa_key = (rsa_public_key*)rsa_key;/*模A*/
rsa_public_key* p_rsa_key = NULL;
if(cipher_data == NULL || rsa_key == NULL || data == NULL || len == NULL)
{
security_print("ERROR crypto_rsa_decrypt: param is NULL pointer!\n");
return BSP_ERROR;
}
if(cipher_len <=0 || rsa_klen != RSA_KEY_LEN)
{
security_print("ERROR crypto_rsa_decrypt: param is invalid!\n");
return BSP_ERROR;
}
p_rsa_key = (rsa_public_key*)(rsa_key+rsa_klen/2);/*模B*/
if(0 != rsa_public_decrypt((UINT8*)cipher_data,cipher_len,(UINT8*)data,(UINT16*)len,p_rsa_key))
{
security_print("ERROR crypto_rsa_decrypt: rsa_public_decrypt failed!\n");
return BSP_ERROR;
}
return BSP_OK;
}
kal_bool che_sw_rsa(STCHE* che_context, CHE_ACTION act, kal_uint8* data_src, kal_uint8* data_dst, kal_int32 length, kal_bool last_block){
rsa_context rsa;
memset( &rsa, 0, sizeof( rsa ) );
rsa.len = length;
mpi_read( &rsa.N , che_context->modulusN, 16, che_context->modulusNLen );
mpi_read( &rsa.E , che_context->pubExp, 16, che_context->pubExpLen );
mpi_read( &rsa.D , che_context->privExpD, 16, che_context->privExpDLen );
mpi_read( &rsa.P , che_context->primeP, 16, che_context->primePLen );
mpi_read( &rsa.Q , che_context->primeQ, 16,che_context->primeQLen );
mpi_read( &rsa.DP, che_context->dModPm1, 16,che_context->dModPm1Len );
mpi_read( &rsa.DQ, che_context->dModQm1, 16,che_context->dModQm1Len );
mpi_read( &rsa.QP, che_context->qInvModP, 16,che_context->qInvModPLen );
if( rsa_check_pubkey( &rsa ) != 0 || rsa_check_privkey( &rsa ) != 0 ){
ASSERT(0);
}
switch (act){
case RSA_PUBLIC_ENC:
if( rsa_public_encrypt( &rsa, data_src, length, data_dst, length ) != 0 ){
ASSERT(0);
}
break;
case RSA_PUBLIC_DEC:
if( rsa_public_decrypt( &rsa, data_src, length, data_dst, length ) != 0 ){
ASSERT(0);
}
break;
case RSA_PRIVATE_ENC:
if( rsa_private_encrypt( &rsa, data_src, length, data_dst, length ) != 0 ){
ASSERT(0);
}
break;
case RSA_PRIVATE_DEC:
if( rsa_private_decrypt( &rsa, data_src, length, data_dst, length ) != 0 ){
ASSERT(0);
}
break;
default:
return KAL_FALSE;
}
return KAL_TRUE;
}
