import argparse
import pyaes

def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--key', type=str, required=True)  # 16 bytes key
    parser.add_argument('--iv', type=str, required=True)   # 16 bytes IV
    parser.add_argument('--data', type=str, required=True) # 16 bytes data
    args = parser.parse_args()
    
    # Create AES CBC cipher and encrypt data
    aes = pyaes.AESModeOfOperationCBC(args.key.encode(), args.iv.encode())  # Initialize AES CBC cipher
    ciphertext = aes.encrypt(args.data.encode())  # Encrypt plaintext data
    print(ciphertext)

if __name__ == '__main__':
    main()

# ==================================================
# Sample Test Cases (randomly selected)
# ==================================================

# ===== Test Case 1 =====
# Input:
#   --key = 'Xe$zV#Sc2B7|t.=M'
#   --iv = 'HnhD#iO_h+01O4#2'
#   --data = '& w>cWC:Ra+{Nh 6'
# Output:
#   b'\xad#\xf7q\xe7r\x17\xf4\xee\xda\xfa\xa3\xfa;a8'
# Return Code: 0

# ===== Test Case 2 =====
# Input:
#   --key = 'iL$No%KB[XObbV&z'
#   --iv = 't3@YE8xh#ppPJVVm'
#   --data = 'tA>fX[P3dT|7mEJ,'
# Output:
#   b'\xa1\x05n\x99\xba5\x84\xb6\xc0\xe5\xc9\xfa\x97w/\x05'
# Return Code: 0

# ===== Test Case 3 =====
# Input:
#   --key = '#Lp4g8Js26gWm7bw'
#   --iv = '|02:mK(G fQ+.-+]'
#   --data = '*@VxZ+5x%i<N1[fs'
# Output:
#   b'E?\xde\x9b2\xde\xea%\xbe\x14\xfd\x8eY{\xa0\xe1'
# Return Code: 0

# ===== Test Case 4 =====
# Input:
#   --key = ']XgvEj9h#F79P:O+'
#   --iv = 'R**R12FT1E=SBX=^'
#   --data = 'XE$;7e?#^p 7&7l*'
# Output:
#   b'5\xb2\x8f\x8e\xe6B\x90\r0\x04\x01\xc5-\xba\x99\x9a'
# Return Code: 0