/BACKUP[=time]
Selects files according to the dates of their most recent backup.
This qualifier is relevant only when used with the /BEFORE or the
/SINCE qualifier. In addition, do not use /BACKUP with /EXPIRED or
/MODIFIED.
If you omit time, TODAY is used. For more information on time
specifications, see the OpenVMS User's Manual.
/BEFORE[=time]
Selects files that have a creation time before the time you specify.
If you omit time, TODAY is used. For more information on time
specifications, see the OpenVMS User's Manual.
/BY_OWNER[=uic]
/NOBY_OWNER
Selects files with the owner UIC you specify.
If you omit uic, the UIC of the current process is used. For
more information on specifying UIC format, see the OpenVMS User's Manual.
/CONFIRM
/NOCONFIRM
Controls whether or not a confirmation request is displayed before each
decryption, as follows:
| Response |
Meaning |
|
YES
|
Decrypts the file
|
|
NO or
[Return]
|
Does not decrypt the file (default)
|
|
QUIT or
[Ctrl/Z]
|
Does not decrypt the file or any subsequent files
|
|
ALL
|
Decrypts the file plus all subsequent files
|
/DELETE
/NODELETE
Default: /NODELETE.
Controls whether or not the input files are deleted after the
decryption operation is complete and the output file is written and
closed.
/ERASE
/NOERASE
Controls whether or not the input files are erased with the data
security pattern before being deleted. By default, the location in
which the data was stored is not overwritten with the data security
pattern. The /ERASE qualifier must be used with /DELETE.
/EXCLUDE=file-spec
/NOEXCLUDE
Excludes the specified files from the decryption operation. You can use
wildcard characters. You do not need to enter an entire file
specification. Any field that you omit defaults to the input file
specification.
Because directory files are never encrypted, you need not specify them.
/EXPIRED[=time]
Selects files according to the dates on which they expire.
This qualifier is relevant only when used with the /BEFORE or the
/SINCE qualifier. In addition, do not use /EXPIRED with /BACKUP or
/MODIFIED.
If you omit time, TODAY is used. For more information on time
specifications, see the OpenVMS User's Manual.
/KEY_ALGORITHM= {DESCBC (default) | 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.
/MODIFIED[=time]
Selects files according to the dates on which they were last modified.
This qualifier is relevant only when used with the /BEFORE or the
/SINCE qualifier. In addition, do not use /MODIFIED with /BACKUP or
/EXPIRED.
If you omit time, TODAY is used. For more information on time
specifications, see the OpenVMS User's Manual.
/OUTPUT=file-spec
Alternate output file name for the decryption operation.
By default, each input file decrypted is written to a separate output
file that is one version higher than that of the input file. When using
the /OUTPUT qualifier, specify the parts of the file specification
different from the defaults. You do not need to provide an entire file
specification. Any field that you omit defaults to the input file
specification.
/SHOW=(keyword-list)
Controls whether or not the following information about the decryption
operation is displayed on SYS$COMMAND:
| Keyword |
Meaning |
|
FILES
|
Displays input and output file names on SYS$COMMAND
|
|
STATISTICS
|
Displays the encryption stream statistics:
- Bytes processed
- Internal records processed
- CPU time consumed within the encryption algorithm
|
/SINCE[=time]
Selects files that have a creation date before the time you specify.
If you omit time, TODAY is used. For more information on time
specifications, see the OpenVMS User's Manual.
/STATISTICS
Similar to /SHOW, except that /STATISTICS lists both files and
statistics, whereas /SHOW can be customized to list only one or the
other.
