SYMMETRIC / XOR:
Original Message : NETWORK SECURITY
Encrypted Message: IBSPHUL'TBDRUNS^
Decrypted Message: NETWORK SECURITY

ASYMMETRIC / RSA:
Original Message : HELLO NETWORK SECURITY
Encrypted Message: b'<random ciphertext bytes, change every run>'
Decrypted Message: HELLO NETWORK SECURITY

Important: output ciphertext for RSA is random and may include special/escaped bytes; decrypted text MUST match original.
