SubtleCrypto.decrypt()

The SubtleCrypto.decrypt() method returns a Promise of the cleartext corresponding to the ciphertext, algorithm and key given as parameters.

Syntax

var result = crypto.decrypt(algo, key, ciphertext);

Parameters

• ciphertext is a ArrayBuffer or an ArrayBufferView containing the data to be decrypted, the ciphertext.
• key is a CryptoKey containing the key to be used for decryption.
• algo is a DOMString defining the decryption function to use. Supported values are: AES-CBC, AES-CTR, AES-GCM, and RSA-OAEP.

Return value

• result is a Promise that returns the cleartext generated by the decryption of the ciphertext.

Exceptions

The promise is rejected when the following exception is encountered:

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

Specifications

Browser compatibility

See also

• Crypto and Crypto.subtle.
• SubtleCrypto, the interface it belongs to.