dictionary of the
Web 加密 API
represents the object that should be passed as the
, when generating a key for the
DOMString. This should be set to
: Although you can technically pass
here, this is strongly discouraged as it is considered vulnerable.
representing the length in bits of the key. If this is omitted the length of the key is equal to the length of the digest generated by the digest function you have chosen. Unless you have a good reason to use a different length, omit this property and use the default.
See the examples for
Web Cryptography API
The definition of 'SubtleCrypto.HmacImportParams' in that specification.