Which three security services do digital signatures provide? (Choose three.)

Confidentiality - hiding document content from unauthorized parties - is provided by encryption algorithms, not by digital signatures, which leave the underlying data readable.

Integrity is ensured because any modification to the signed document produces a different hash that will not match the value decrypted from the signature, revealing tampering.

Non-repudiation is guaranteed because the signature is created with the sender's private key - which only they possess - so the sender cannot credibly deny having signed the document.

Authenticity is confirmed because a recipient who successfully verifies the signature using the sender's public key knows the message genuinely originated from the entity holding the corresponding private key.

Availability - ensuring systems and data remain accessible when needed - is addressed by redundancy and fault-tolerance controls, not by the digital signature mechanism.