SecKeyCreateEncryptedData(_:_:_:_:)

Declaration

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

Parameters

• key:

  The public key to use to perform the encryption.

• algorithm:

  The encryption algorithm to use. 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.

• plaintext:

  The data to be encrypted.

• 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

• Using Keys for Encryption
• Generating New Cryptographic Keys

Return Value

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

Discussion

You can decrypt this data with the corresponding private key and a call to SecKeyCreateDecryptedData(_:_:_:_:).