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
SubtleCrypto.generateKey(),
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 CryptoKey objects: a
privateKey property containing the private key and a publicKey property
containing the public key.
Properties
privateKey
privateKey:
CryptoKey
A CryptoKey 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.
publicKey
publicKey:
CryptoKey
A CryptoKey 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.
Last updated: Oct 02, 2025
