The EcKeyImportParams dictionary of the Web Crypto API represents the object that should be passed as the algorithm parameter into SubtleCrypto.importKey() or SubtleCrypto.unwrapKey(), when generating any elliptic-curve-based key pair: that is, when the algorithm is identified as either of ECDSA or ECDH.

name

A string. This should be set to ECDSA or ECDH, depending on the algorithm you want to use.

namedCurve

A string representing the name of the elliptic curve to use. This may be any of the following names for NIST-approved curves:

• P-256
• P-384
• P-521

See the examples for SubtleCrypto.importKey().

• SubtleCrypto.importKey().
• SubtleCrypto.unwrapKey().