TheEcdhKeyDeriveParams dictionary of theWeb Crypto API represents the object that should be passed as thealgorithm parameter intoSubtleCrypto.deriveKey() andSubtleCrypto.deriveBits(), when using theECDH orX25519 algorithms.

ECDH enables two people who each have a key pair consisting of a public and a private key to derive a shared secret. They exchange public keys and use the combination of their private key and the other entity's public key to derive a secret key that they — and no one else — share.

The parameters for ECDHderiveKey() therefore include the other entity's public key, which is combined with this entity's private key to derive the shared secret.

Instance properties

name

A string.This should be set toECDH orX25519, depending on the algorithm used.

public

ACryptoKey object representing the public key of the other entity.

Examples

See the examples forSubtleCrypto.deriveKey() andSubtleCrypto.deriveBits().

Specifications

Browser compatibility

Browsers that support the "ECDH" or "X25519" algorithm for theSubtleCrypto.deriveKey() method will support this type.

See also

• SubtleCrypto.deriveKey().
• SubtleCrypto.deriveBits()