A digital signature, by itself, conceals the contents of the signed document.
Answer
false
Explanation
### Why this is right
The statement is false because signing and encryption have different purposes. A signature supports authenticity and integrity checks, while encryption is used to conceal readable content.
### The concept
A signed document can remain plain text that anyone with access can read. The signature is calculated through a cryptographic process involving a private key and a hash. Encryption transforms readable data into ciphertext so that an authorized party must decrypt it to read the original. A system may use both operations, but the signature alone is not encryption.
### The other options
- **True**: This confuses a signature with encryption. A digital signature does not conceal the document.
### Terms
- **Digital signature**: A cryptographic mark used to check authenticity and integrity.
- **Encryption**: Transforming readable data to conceal it from unauthorized readers.
- **Ciphertext**: Data in encrypted form.
### Watch out
A file may be signed and encrypted, but those are separate operations.
### Remember
Signing checks; encryption conceals.
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