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.subtle.verify(algo, key, signature, text2verify);


  • 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.
Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support37123411248
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support5353 ?3437 ?6.0

See also

Document Tags and Contributors

Contributors to this page: fscholz, Dans24, abbycar, jyasskin, teoli, GreatCall-KayeK
Last updated by: fscholz,