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Private Key
Encryption
Secret component of an asymmetric key pair used for decryption or signing.
Definition
A private key is the secret half of an asymmetric key pair. It decrypts data encrypted to the corresponding public key or creates digital signatures verified by the public key.
In plain English
Secret component of an asymmetric key pair used for decryption or signing.
Why this matters
Why it matters: Private key compromise breaks security guarantees, enabling impersonation and unauthorized access.
Example
Example: Hardware security modules or secure enclaves protect private keys from extraction.