McAfee MEJCAE-AM-DA Product Guide - Page 94

CLEARSIG, Default Value, Notes, CMDLINE-FORMAT, Syntax, COMMENT

Page 94 highlights

Using the Configuration File Learning about the configuration file CLEARSIG Use the CLEARSIG parameter to generate a signed message that can be read with human eyes, without the aid of E-Business Server. The recipient must still use E-Business Server to verify the signature. For an example of a clear-signed message, see Producing a clear-signed message on page 44. E-Business Server messages that are signed and not encrypted include a signature certificate as well as the compressed message. For email, this message is then ASCII-armored, rendering the message unreadable to human eyes. E-Business Server would need to decode the message in order to make it readable. If the original plaintext message is in text, not binary form, CLEARSIG can make the signed message readable by skipping the message compression and armoring just the signature portion of the message. Thus, the message can be read with human eyes, without the aid of E-Business Server (again, the recipient still needs E-Business Server to be able to verify the signature). Default Value CLEARSIG = on Notes • CLEARSIG is enabled by default, and applies to --sign operations only when --armor and --text are also enabled. Set ARMOR=ON (or use the --armor option), and set TEXT=ON (or use the --text option). • CLEARSIG can be disabled on the command line with --clearsig off. • Note that since this method only applies ASCII armor to the binary signature certificate, and not to the message text itself, there is some risk that the unarmored message may suffer some accidental corruption while en route. This can happen if it passes through an email gateway that performs character set conversions, or in some cases extra spaces may be added to or stripped from the ends of lines. If this occurs, the signature will fail to verify, which may give a false indication of possible tampering. • When E-Business Server calculates the signature for text in CLEARSIG mode, trailing blanks are ignored on each line. CMDLINE-FORMAT Sets the compatibility mode for legacy or long options when entering command-line options. You can also set this option on the command line with the --cmdline-format option. E-Business Server is mostly compatible with the legacy options and configuration values used in previous versions. However, the on-screen messages, error strings, and prompts have changed. By setting the configuration value CMDLINE-FORMAT (or the environment variable PGP_CMDLINE_FORMAT) to legacy, the product translates legacy options into equivalent new options, and recognizes most previous configuration file options. E-Business Server displays a warning for any unsupported options. Syntax CMDLINE-FORMAT = Default Value CMDLINE-FORMAT = long Notes • If INFO is set to Verbose in the E-Business Server configuration file (same as VERBOSE=2 in legacy mode), then E-Business Server displays the long-option equivalent for all legacy commands. This may assist you in porting legacy command-line options to the new long-options. For more information on the INFO parameter, see INFO on page 98. • When using legacy mode, long-options and aliases are not supported. COMMENT Displays a comment header in all armored output just beneath the E-Business Server Version header. E-Business Server™ 8.6 Product Guide 92

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E-Business Server
8.6
Product Guide
92
Using the Configuration File
Learning about the configuration file
CLEARSIG
Use the
CLEARSIG
parameter to generate a signed message that can be read with human eyes, without the
aid of E-Business Server. The recipient must still use E-Business Server to verify the signature. For an
example of a clear-signed message, see
Producing a clear-signed message
on page 44
.
E-Business Server messages that are signed and not encrypted include a signature certificate as well as the
compressed message. For email, this message is then ASCII-armored, rendering the message unreadable
to human eyes. E-Business Server would need to decode the message in order to make it readable.
If the original plaintext message is in text, not binary form,
CLEARSIG
can make the signed message readable
by skipping the message compression and armoring just the signature portion of the message. Thus, the
message can be read with human eyes, without the aid of E-Business Server (again, the recipient still needs
E-Business Server to be able to verify the signature).
Default Value
CLEARSIG = on
Notes
CLEARSIG
is enabled by default, and applies to
--sign
operations only when
--armor
and
--text
are also
enabled. Set
ARMOR=ON
(or use the
--armor
option), and set
TEXT=ON
(or use the
--text
option).
CLEARSIG
can be disabled on the command line with
--clearsig off
.
Note that since this method only applies ASCII armor to the binary signature certificate, and not to the
message text itself, there is some risk that the unarmored message may suffer some accidental
corruption while en route. This can happen if it passes through an email gateway that performs character
set conversions, or in some cases extra spaces may be added to or stripped from the ends of lines. If this
occurs, the signature will fail to verify, which may give a false indication of possible tampering.
When E-Business Server calculates the signature for text in
CLEARSIG
mode, trailing blanks are ignored
on each line.
CMDLINE-FORMAT
Sets the compatibility mode for legacy or long options when entering command-line options. You can also
set this option on the command line with the
--cmdline-format
option.
E-Business Server is mostly compatible with the legacy options and configuration values used in previous
versions. However, the on-screen messages, error strings, and prompts have changed. By setting the
configuration value
CMDLINE-FORMAT
(or the environment variable
PGP_CMDLINE_FORMAT
) to
legacy
, the product
translates legacy options into equivalent new options, and recognizes most previous configuration file
options. E-Business Server displays a warning for any unsupported options.
Syntax
CMDLINE-FORMAT = <legacy|long>
Default Value
CMDLINE-FORMAT = long
Notes
• If
INFO
is set to
Verbose
in the E-Business Server configuration file (same as
VERBOSE=2
in legacy mode),
then E-Business Server displays the long-option equivalent for all legacy commands. This may assist you
in porting legacy command-line options to the new long-options. For more information on the
INFO
parameter, see
INFO
on page 98
.
When using legacy mode, long-options and aliases are not supported.
COMMENT
Displays a comment header in all armored output just beneath the E-Business Server Version header.