CryptoKeyPair
The CryptoKeyPair dictionary of the Web Crypto API represents a key pair for
an asymmetric cryptography algorithm, also known as a public-key algorithm.
A CryptoKeyPair object can be obtained using
,
when the selected algorithm is one of the asymmetric algorithms:
RSASSA-PKCS1-v1_5, RSA-PSS, RSA-OAEP, ECDSA, or ECDH.
It contains two properties, which are both objects: a
privateKey property containing the private key and a publicKey property
containing the public key.
Properties
publicKey
publicKey: CryptoKey
A object representing the private key. For encryption and decryption algorithms, this key is used to decrypt. For signing and verification algorithms it is used to sign.
privateKey
privateKey: CryptoKey
A object representing the public key. For encryption and decryption algorithms, this key is used to encrypt. For signing and verification algorithms it is used to verify signatures.
Last updated: Jul 22, 2026
