Symmetric Encryption is a method of securing data where the same key is used for both encrypting and decrypting information. This means that both the sender and the receiver must have access to the same secret key to read the message. Because of its simplicity and speed, symmetric encryption is often used for encrypting large amounts of data. However, the main challenge with symmetric encryption is key management. If the key is intercepted or shared with unauthorized users, the security of the encrypted data is compromised. Therefore, it is crucial to keep the key safe and to use secure methods for sharing it between parties.