Select ALL statements that correctly describe the digital-signature workflow in the course material.

### Why this is right - **The sender signs with a private key.** The private key is used to create the signature in the described workflow. - **The recipient verifies with the corresponding public key.** The public key is paired with the signing key and is used to check the signature. - **A hash represents the document's contents in compact form.** The hash is calculated from the document and supports detection of changes. ### The concept The signature process connects a document’s contents to a signer’s private key. Verification uses the corresponding public key and checks whether the signature is consistent with the document. A change to the document changes the hash, so the original signature should no longer verify. This check does not make the document secret. ### The other options - **D. Signing alone hides the document from readers.** This is false because concealment is the job of encryption, not signing. ### Terms - **Hash**: A compact value calculated from data. - **Private key**: The secret key used by the sender to sign. - **Public key**: The corresponding shareable key used for verification. ### Remember The private key signs, the public key verifies, and neither step alone encrypts the file.