HkdfParams

HkdfParams dictionary of the Web 加密 API represents the object that should be passed as the algorithm parameter into SubtleCrypto.deriveKey() , when using the HKDF algorithm.

特性

name
A DOMString . This should be set to HKDF .
hash

A DOMString representing the digest algorithm to use. This may be one of:

  • SHA-1
  • SHA-256
  • SHA-384
  • SHA-512
salt
A BufferSource HKDF specification states that adding salt "adds significantly to the strength of HKDF". Ideally, the salt is a random or pseudo-random value with the same length as the output of the digest function. Unlike the input key material passed into deriveKey() , salt does not need to be kept secret.
info
A BufferSource representing application-specific contextual information. This is used to bind the derived key to an application or context, and enables you to derive different keys for different contexts while using the same input key material. It's important that this should be independent of the input key material itself. This property is required but may be an empty buffer.

范例

See the examples for SubtleCrypto.deriveKey() .

规范

规范 状态 Comment
Web Cryptography API
The definition of 'SubtleCrypto.HkdfParams' in that specification.
Recommendation

浏览器兼容性

Browsers that support the "HKDF" algorithm for the SubtleCrypto.deriveKey() method will support this type.

另请参阅