I update my question because At first I think that I have the best solution However, I don't have it until now.It was my mistake in execution. I think that the error comes from the loop while in the file C.
I am trying to read lines from a text file"Plaintext.txt".
e0370734313198a2885a308d3243f6a8
ccddeeff8899aabb4455667700112233
8e73b0f7da0e6452c810f32bc4567a22
It contains now tow lines, I put just two in order to make simple test, but I must put more then 1000 texts (means more than 1000 lines) I want to read each line then send it to the uart where I will do encryption for every plaintext (The encryption algorithm is in C): This is my script:
I edit it as you tell me but I still have the encryption of one line
import string
import serial
import time
from array import array
import struct
import binascii
ser = serial.Serial(
port='COM4',\
baudrate=230400,\
parity=serial.PARITY_NONE,\
stopbits=serial.STOPBITS_ONE,\
bytesize=serial.EIGHTBITS,\
timeout=0)
f = open(r'C:\\Users\\user\\Plaintxt.txt', 'r')
for a in f:
plaintxt_16b=a[0:32]
plaintext=binascii.unhexlify(plaintxt_16b)
clear_msg=b'\x24'+b'\x73'+b'\x10'+plaintext
ser.write(clear_msg)
time.sleep(0.4)
while True:
print(ser.read(70))
ser.close() # close ports
In the C file:
while(1)
{
int rx_length = dev_uart_ptr->uart_read((void*)rx_buffer, 19);
if (rx_length <19)
{
if (rx_buffer[0]=='\x24')
{
if (rx_buffer[1]=='\x73')
{
if (rx_buffer[2]=='\x10')
{
plaintext[0] = (rx_buffer[3] << 24) |
(rx_buffer[4] << 16) |
(rx_buffer[5] << 8) |
rx_buffer[6];
plaintext[1] = (rx_buffer[7] << 24) |
(rx_buffer[8] << 16) |
(rx_buffer[9] << 8) |
rx_buffer[10];
plaintext[2] = (rx_buffer[11] << 24) |
(rx_buffer[12] << 16) |
(rx_buffer[13] << 8) |
rx_buffer[14];
plaintext[3] = (rx_buffer[15] << 24) |
(rx_buffer[16] << 16) |
(rx_buffer[17] << 8) |
rx_buffer[18];
xprintf("**************************\n");
xprintf("%8x %8x %8x %8x \n",plaintext[0],plaintext[1],plaintext[2],plaintext[3]);
aes2_set_msg((unsigned int *)plaintext); /** Reset AES message buffer */
aes2_set_key128((unsigned int *)key128); /** Put the key 128 into AES */
/** Configure AES register to enable IRQ and ENCODE */
regs_aes2_ptr-> CFG = AES2_CFG_ENC_DEC_BIT | AES2_CFG_IRQ_MASK_BIT;
/** Reset AES internaly */
regs_aes2_ptr-> CTRL = AES2_CTRL_SWRESET_BIT;
#if DEBUG
xprintf("Go encrypt..\n");
#endif
/** Start the ENCODE function */
regs_aes2_ptr-> CTRL = AES2_CTRL_START_BIT;
while(!aes2_irq_flag); /** Wait for irq flag */
aes2_irq_flag=0; /** Reset irq flag */
#if DEBUG
xprintf("Encrypt done..\n");
#endif
aes2_get_msg((unsigned int *)ciphertext); /** Retrieve encrypted message */
xprintf("%8x %8x %8x %8x \n",ciphertext[0],ciphertext[1],ciphertext[2],ciphertext[3]);
xprintf("**************************\n");
}
else
{
printf ("false");
}
}
else
{
printf ("false");
}
}
}
}// End While
}//end of C_Entry
So the problem is that It takes just the last line and repeat all the time the same encryption of that line:
$**************************
ccddeeff 8899aabb 44556677 112233
Go encrypt..
Encrypt do
ne..
d6e4d64b 27d8d055 c5c7573a 8df4e9aa
**************************
******************
********
ccddeeff 8899aabb 44556677 112233
Go encrypt..
Encrypt done..
d6e4d64b 27d
8d055 c5c7573a 8df4e9aa
**************************
**************************
ccddeeff
8899aabb 44556677 112233
Go encrypt..
Encrypt done..
d6e4d64b 27d8d055 c5c7573a 8df
4e9aa
**************************
**************************
ccddeeff 8899aabb 44556677
112233
Go encrypt..
Encrypt done..
d6e4d64b 27d8d055 c5c7573a 8df4e9aa
**********
****************
**************************
ccddeeff 8899aabb 44556677 112233
Go enc
rypt..
Encrypt done..
d6e4d64b 27d8d055 c5c7573a 8df4e9aa
....................
I would be very grateful if you could help me.
The problem was spaces in python file: the for loop must contains
ser.write(clear_msg)
time.sleep(0.4)
print(ser.read(70))
By that way, it will not take just the last plaintext from the plaintext file.
import string
import serial
import time
from array import array
import struct
import binascii
ser = serial.Serial(
port='COM4',\
baudrate=230400,\
parity=serial.PARITY_NONE,\
stopbits=serial.STOPBITS_ONE,\
bytesize=serial.EIGHTBITS,\
timeout=0)
f = open(r'C:\\Users\\user\\Plaintxt.txt', 'r')
for a in f:
plaintxt_16b=a[0:32]
plaintext=binascii.unhexlify(plaintxt_16b)
clear_msg=b'\x24'+b'\x73'+b'\x10'+plaintext
ser.write(clear_msg)
time.sleep(0.4)
print(ser.read(70))
ser.close() # close ports
My problem is resolved. Thank you very much for your help.