ret_type CCM_mode(
const unsigned char key[], const unsigned long key_len, /* the key value to be used */
const unsigned char nonce[], /* the nonce value */
const unsigned char auth[], const unsigned long ad_len, /* the additional authenticated data */
unsigned char msg[], const mlen_type msg_len, /* the message data */
const unsigned long auth_field_len, /* the authentication field length */
const int ed_flag) /* 0 = encrypt, 1 = decrypt */
{ CCM_ctx ctx[1];
ret_type ec;
ec = CCM_init(key, key_len, nonce, auth, ad_len, msg_len, auth_field_len, ctx);
return ec != CCM_ok ? ec : ed_flag ?
CCM_decrypt(msg, msg, msg_len + auth_field_len, ctx) : CCM_encrypt(msg, msg, msg_len, ctx);
}
void sendData(ENC_ctx *ENC_ctx_sender, const unsigned char *input, const unsigned int input_size, message_ctx *ciphermessage)
{ if (PRINT_inputs_outputs){
printf("\n-->Encrypt: %s\n", input);
print_hex_memory(input, input_size);
printf("\n");
}
CCM_encrypt(ciphermessage, ENC_ctx_sender, input, input_size);
ciphermessage->tag=0xFF;
if (PRINT_messages){
print_message(ciphermessage);
printf("\n");
}
}
