SecKeyCreateDecryptedData(_:_:_:_:)

Declaration

func SecKeyCreateDecryptedData(_ key: SecKey, _ algorithm: SecKeyAlgorithm, _ ciphertext: CFData, _ error: UnsafeMutablePointer<Unmanaged<CFError>?>?) -> CFData?

Parameters

• key:

  The private key to use to perform the decryption.

• algorithm:

  The algorithm that was used to encrypt the data in the first place. Use one of the encryption algorithms listed in Seckeyalgorithm. You can use the Seckeyisalgorithmsupported(_:_:_:) function to test that the key is suitable for the algorithm.

• ciphertext:

  The data, produced with the corresponding public key and a call to the Seckeycreateencrypteddata(_:_:_:_:) function, that you want to decrypt.

• error:

  The address of a Cferror object. If an error occurs, this is set to point at an error instance that describes the failure.

Mentioned in

• Generating New Cryptographic Keys
• Using Keys for Encryption

Return Value

The decrypted data or NULL on failure. In Objective-C, call the CFRelease function to free the data’s memory when you are done with it.