The CryptoKey.type read-only property that indicates the type of the key: if it is the key for a symmetric algorithm ("secret") or for an asymmetric algorithm ("public" or "private", depending of its purpose).


result = <code>key</code><code>.type</code>

Return value

  • result is an enumerated value that can be:
    • "secret" represents the unique key used for encrypting or decrypting a message using a symmetric algorithm.
    • "public" represents a publicly shareable key used in an asymmetric algorithm.
    • "private" represents a key used in an asymmetric algorithm that must be kept private.


Specification Status Comment
Web Cryptography API
The definition of 'CryptoKey.type' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 37 34 (34) Not supported ? Not supported
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 37 34.0 (34) Not supported ? Not supported

See also


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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API CryptoKey Property Read-only Reference Référence Web Crypto API