In the context of digital signatures, which statement is true?

In the context of digital signatures, the statement about the message being encrypted using the sender's private key is accurate, as it is fundamental to how digital signatures function. When the sender creates a digital signature, they first generate a hash of the message, which is a fixed-size string of characters that uniquely reflects the content of the message. This hash is then encrypted with the sender's private key.

The use of the sender's private key ensures that only the sender can create the signature, as the private key is kept secret. By encrypting the hash with their private key, they create a signature that can be verified by anyone who has access to the sender's public key.

To verify the signature, the recipient will decrypt the signature using the sender's public key, which reveals the original hash. The recipient will also compute their own hash of the received message and compare it with the decrypted hash. If both hashes match, this confirms that the message has not been tampered with and authenticity is established—since only the sender's private key could have produced that particular signature.

This verification process relies on the principles of asymmetric encryption, where the public and private keys are mathematically related yet distinct, enhancing security and facilitating trust in communications. Thus