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Computer Science for IGCSE & O level - Data Transmission (Section 9 - No. 31)

What is an essential element of public-key cryptography?
One single key for all operations.
A private key and a public key.
A key that is never shared.
The same key used by all devices.

स्पष्टीकरण

Public-key cryptography relies on two mathematically related keys: a private and a public key.

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