AES-128 [ECB && CTR] Modes implementation in C/POSIX, multi-threaded using <pthread.h>.
Threads:
read : read state [16 Bytes] from file to buffer1. [Producer]
ecb_encrypt || ecb_decrypt || ctr_encrypt || ctr_decrypt : read state [16 Bytes] from buffer, operate on it, then move it to buffer2 [Producer & Consumer]
write: read state [16 Bytes] from buffer2, write it to the output file [Consumer]
Threads are oganised to work in parallel, producer consumer method, and synchronised using mutex lock.
Still learning, looking for your feedbacks.
Usage:
To compile: gcc -pthread AES.c -o [output filename/path]
Command line Arguments:
argv[1] = "-ecb" [use ECB mode] || "-ctr" [use CTR mode]
argv[2] = "-e" [Encrypt argv[3]] || "-d" [Decrypt argv[3]]
argv[3] = input file name
argv[4] = "-k"
argv[5] = "r" [Generate Random Key] || key file name
If argv[1] = "-ctr" : argv[6] = "-iv" argv[7] = "r" [Generate random IV] || IV file name
Output:
if argv[2] == "-e" --> cipher_aes.ecrypted else if argv[2] == "-d" --> plain.decrypted
Example:
gcc -pthread AES.c -o aes
aes -ecb -e plain.txt -k key.txt
aes -ecb -d cipher.txt -k key.txt
aes -ctr -e plain.txt -k key.txt -iv IV.txt
aes -ctr -d encrypted.aes -k key.txt -iv IV.txt