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Network Security with OpenSSL by Pravir Chandra, Matt Messier, John Viega

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Name

x509

Synopsis

The x509 command is used to create, examine, and manipulate X.509 certificates. It is a complex command that accepts a large number of options. We’ve broken the options up into separate sections based on their function.

General Options

-in filename

Specify the name of a file from which data will be read. The expected data varies depending on the type of operation being performed, but usually an X.509 certificate is expected. If this option is omitted, stdin is used by default.

-inform DER|PEM|NET

Specify the format of the input data. If this option is omitted, the default is normally PEM, but may vary depending on the operation being performed.

-out filename

Specify the name of a file to which data will be written. Output is normally an X.509 certificate. If this option is omitted, stdout is used by default.

-outform DER|PEM|NET

Specify the format of the output data. If this option is omitted, the default is normally PEM, but may vary depending on the operation being performed.

-md2, -md4, -md5, -mdc2, -sha, -sha1, -rmd160, -dss1

Specify the message digest to use for signing. If this option is omitted, the default is to use MD5 for certificates and certificate requests containing RSA keys. For certificates and certificate requests containing DSA keys, DSS1 is always used, regardless of which algorithm is specified on the command line.

Display Options

-noout

Cause output of the certificate in encoded form to be suppressed.

-text

Output a human-readable representation ...

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