Decrypt the given CipherText, using the symmetric algorithm
Algorithm, key Key, and initialization vector IV,
to give PlainText.
CipherText must be a string, atom or list of codes or
characters, and PlainText is created as a string. Key
and IV are typically lists of bytes, though atoms and
strings are also permitted.
Algorithm must be an algorithm which your copy of OpenSSL
for an example.
Encoding to use for CipherText. Default is utf8.
Alternatives are utf8 and octet.
For block ciphers, the padding scheme to use. Default is
block. You can disable padding by supplying none
For authenticated encryption schemes, the tag must be specified as a
list of bytes exactly as they were generated upon encryption. This
option requires OpenSSL 1.1.0 or greater.
If the tag length is smaller than 16, this option must be used to permit
such shorter tags. This is used as a safeguard against truncation
attacks, where an attacker provides a short tag that is easier to guess.
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