HELPLIB.HLB  —  DECRYPT  Qualifiers  /KEY_ALGORITHM
                       { DESCBC (default) }
       /KEY_ALGORITHM= { AESmmmkkk        }
                       {                  }

    Where mmm is the mode CBC, ECB, CFB, or OFB; and kkk is 128,
    192, or 256 bits. Cipher Block Chaining (CBC) and Electronic Code
    Book (ECB) are 16-byte block modes, meaning blocks are padded to
    16 bytes if necessary during encryption. The padding is removed
    during decryption. Cipher Feedback (CFB) and Output Feedback
    (OFB) are 8-bit character stream mode emulation, useful in data
    communications and where no padding is required. Note that /KEY_
    ALGORITHM=AES is a shortcut for specifying AESCBC128.

    The algorithm by which the random key and the initialization
    vector are protected within the encrypted file. Specify the same
    algorithm (AES or DES) that you used to encrypt the file and
    create the key, if not, the default is DESCBC.
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