A valid digital signature conceals the signed document's contents from readers.
Answer
false
Explanation
### Why this is right
A digital signature provides evidence about the signer and whether the signed data changed. It does not encrypt the document or hide its contents.
### The concept
Encryption supports confidentiality by restricting access to readable content. Signing supports authenticity and integrity. A system may use both encryption and signatures, but each operation has a distinct purpose.
### The other options
- **The statement is false**: it confuses signing with encryption.
### Remember
Signing authenticates; encryption conceals.
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