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Use passwords or symmetric keys for decryption
To decrypt the data or the encryption key using a password or a secret (symmetric) key, you need to employ TElXMLKeyInfoSymmetricData class. All you need to do is
If you are using the instance of TElXMLKeyInfoSymmetricData class
for decryption of the data, assign it to KeyData property
of TElXMLDecryptor class.
If you are using the instance of TElXMLKeyInfoSymmetricData class
for decryption of the encryption key
(when KeyEncryptionType property of TElXMLDecryptor class is set to xetKeyWrap),
assign it to KeyEncryptionKeyData property.
Note, that you can use KeyName property of TElXMLDecryptor as a hint for how to select the key.