I try to make the result of the encryption readable by converting the result either in Base64 or in Hex.
Yet I am not able to convert it back to be able to decrypt.
let $encrypted := crypto:encrypt('message', 'symmetric','keykeyke','DES’)
let $base64 := string(convert:string-to-base64($encrypted))
let $encrypted := convert:binary-to-string(xs:base64Binary($base64)) (: generates invalid characters :)
return crypto:decrypt($encrypted, 'symmetric','keykeyke','DES')