Hello,
I am trying to run this code:
#include <AESLib.h>
void setup()
{
// put your setup code here, to run once:
Serial.begin(57600);
uint8_t key[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
char data[] = "0123456789012345"; //16 chars == 16 bytes
unsigned long start = micros();
aes128_enc_single(key, data);
unsigned long end = micros();
Serial.print("encrypted:");
Serial.println(data);
unsigned long delta = end - start;
Serial.println("Encryption time in usec:");
Serial.println(delta);
start = micros();
aes128_dec_single(key, data);
end = micros();
Serial.print("decrypted:");
Serial.println(data);
delta = end - start;
Serial.println("Dencryption time in usec:");
Serial.println(delta);
}
void loop()
{
}
taken from this library:
AES_library
on Arduino DUE, but when compiling I get this error:
. . .
In file included from C:\Users\alex\Documents\Arduino\libraries\AESLib-master\aes_dec-asm_faster.S:28:0:
C:\Users\alex\Documents\Arduino\libraries\AESLib-master\avr-asm-macros.S:31:20: fatal error: avr/io.h: No such file or directory
#include <avr/io.h>
^
compilation terminated.
. . .
Can someone tell me what to do?
Thank you...
system
July 30, 2019, 6:58pm
2
Can someone tell me what to do?
Compile and link the code for the type of board (AVR) that it was written for.
Compiled for Arduino UNO ---> everything ok
So maybe I should modify it to run in 32-bit ? But why not running on 8-bit Arduino MEGA 2560 R3 ?
Maybe your installation is corrupt, 'cause there is no reason why it does not work for MEGA 2560.
Nothing changed, but I found another AES library that runs on DUE...
I did a few experiments with this library: http://utter.chaos.org.uk/~markt/AES-library.zip
on Arduino DUE. I changed the part of the code here:
void prekey_test_var_plaintext (int bits)
{
Serial.println () ;
Serial.print ("ECB Varying Plaintext ") ;
Serial.print (bits) ;
Serial.println (" bits") ;
Serial.println () ;
byte succ ;
set_bits (bits, key, 0) ; // all zero key
succ = aes.set_key (key, bits) ;
if (succ != SUCCESS)
Serial.println ("Failure set_key") ;
for (int bitcount = 1 ; bitcount <= 128 ; bitcount++)
{
Serial.print ("COUNT = ") ; Serial.println (bitcount-1) ;
print_value ("KEY = ", key, bits) ;
set_bits (128, plain, bitcount) ;
print_value ("PLAINTEXT = ", plain, 128) ;
unsigned long start = micros();
succ = aes.encrypt (plain, cipher) ;
unsigned long end_ = micros();
if (succ != SUCCESS)
Serial.println ("Failure encrypt") ;
print_value ("CIPHERTEXT = ", cipher, 128) ;
unsigned long delta = end_ - start;
Serial.println("Encryption time in usec:");
Serial.println(delta);
start = micros();
succ = aes.decrypt (cipher, check) ;
end_ = micros();
if (succ != SUCCESS)
Serial.println ("Failure decrypt") ;
//print_value ("CHECK = ", check, 128) ;
check_same (plain, check, 128) ;
Serial.println () ;
}
}
and I use micros in order to calculate encryption time. I get these results:
COUNT = 0
KEY = 00000000000000000000000000000000
PLAINTEXT = 80000000000000000000000000000000
CIPHERTEXT = 3ad78e726c1ec02b7ebfe92b23d9ec34
Encryption time in usec:
95
COUNT = 1
KEY = 00000000000000000000000000000000
PLAINTEXT = c0000000000000000000000000000000
CIPHERTEXT = aae5939c8efdf2f04e60b9fe7117b2c2
Encryption time in usec:
95
COUNT = 2
KEY = 00000000000000000000000000000000
PLAINTEXT = e0000000000000000000000000000000
CIPHERTEXT = f031d4d74f5dcbf39daaf8ca3af6e527
Encryption time in usec:
97
COUNT = 3
KEY = 00000000000000000000000000000000
PLAINTEXT = f0000000000000000000000000000000
CIPHERTEXT = 96d9fd5cc4f07441727df0f33e401a36
Encryption time in usec:
95
This guy here: new AES library - Libraries - Arduino Forum
on post #2 gets:
128 bit, ECB, encryption 0.58ms / block (27.5kB/s) which metered on us is 580us. This is a huge difference between 16MHz 8-bit cpu and 32-bit 84MHz cpu or I am missing something??
What I mean is that this AES code running on ATmega328p, 16MHz 8-bit takes 0.58ms = 580us to complete encryption, and when running on my DUE 84MHz, 32-bit 95us. And I am curious if this is really an obvious result, or I did something wrong on the implementation I posted in my previous post...
Thank you...