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Secure context
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This dictionary represents the object that should be passed as the algorithm parameter into SubtleCrypto.deriveKey(), when using the HKDF algorithm.


DOMString. This should be set to "HKDF".

DOMString. The digest algorithm to use. This may be any of:

  • "SHA-1"
  • "SHA-256"
  • "SHA-384"
  • "SHA-512"
BufferSource. The HKDF specification states that adding salt "adds significantly to the strength of HKDF". Ideally, the salt is a random or pseudorandom value 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.
BufferSource. This property is required but may be an empty buffer. If present it represents application-specific context 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.



Specification Status Comment
Web Cryptography API
The definition of 'SubtleCrypto.HkdfParams' in that specification.

Browser compatibility

No compatibility data found. Please contribute data for "api.SubtleCrypto.encrypt.algorithm-hkdf" (depth: 1) to the MDN compatibility data repository.

See also

Document Tags and Contributors

Contributors to this page: wbamberg
Last updated by: wbamberg,