The SubtleCrypto.verify() method returns a Promise of a Boolean value indicating if the signature given as parameter matches the text, algorithm and key also given as parameters.


var result = crypto<code>.verify(algo, key, signature, text2verify)</code>;


  • signature is a ArrayBuffer or an ArrayBufferView containing the signature to verify.
  • text2verify is a ArrayBuffer or an ArrayBufferView containing the data whose signature as to be verified.
  • key is a CryptoKey containing the key to be used to verify the signature. It is the secret key for a symmetric algorithm and the public key for an asymmetric algorithm.
  • algo is a DOMString defining the signature function to use. Supported values are: HMAC, RSASSA-PKCS1-v1_5, and ECDSA.

Return value

  • result is a Promise that returns a Boolean indicating if the signature has been a success on success.


The promise is rejected when the following exception is encountered:

  • InvalidAccessError when the encryption key is not a key for the requested verifying algorithm or when trying to use an algorithm that is either unknown or isn't suitable for a verify operation.


Specification Status Comment
Web Cryptography API
The definition of 'SubtleCrypto.verify()' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 37 34 (34) No support ? No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 37 34.0 (34) No support ? No support

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Method Reference Référence SubtleCrypto Web Crypto API