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→crypto:decrypt
|-
| width='120' | '''Signatures'''
|{{Func|crypto:decrypt|$input as xs:string, $decryption-type as xs:string, $secret-key as xs:string, $cryptographic-algorithm as xs:string|xs:string}}
|-
| '''Summary'''
|Decrypts the encrypted {{Code|$input}}.<br/>
{{Code|$decryption-type}} must be {{Code|symmetric}}. An option for asymmetric encryption will most likely be added with another version of BaseX. '''Default is {{Code|symmetric}}'''.<br/>{{Code|$secret-key}} is the secret key which is used for both encryption and decryption of input data. Its length is fixed and depends on the chosen algorithm: {{Code|8 bytes for DES}}, {{Code|16 bytes for AES}}.<br/>{{Code|$cryptographic-algorithm}} must either be {{Code|DES}} or {{Code|AES}}. Other algorithms are not supported so far, but, of course, can be added on demand. '''Default is {{Code|DES}}'''.
|-
| '''Errors'''
