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Digital Signature
Encryption
A cryptographic stamp that proves who created something and that it wasn’t changed.
Definition
A digital signature is like a tamper‑proof stamp. It proves a file or message came from a specific sender and wasn’t altered.
In plain English
A cryptographic stamp that proves who created something and that it wasn’t changed.
Why this matters
Why it matters: It helps prevent tampering and impersonation, protecting software updates and sensitive documents.
Example
Example: A signed email proves it really came from the sender.