NAME

       gjarsigner - Java ARchive (JAR) file signing and verification tool

SYNOPSIS

       jarsigner [OPTION]... FILE ALIAS

       jarsigner -verify [OPTION]... FILE

DESCRIPTION

       When the first form is used, the tool signs the designated JAR file. The second form, on
       the other hand, is used to verify a previously signed JAR file.

       FILE is the .JAR file to process; i.e., to sign if the first syntax form is used, or to
       verify if the second syntax form is used instead.

       ALIAS must be a known Alias of a Key Entry in the designated Key Store. The private key
       material associated with this Alias is then used for signing the designated .JAR file.

OPTIONS

       Common options

       The following options may be used when the tool is used for either signing, or verifying,
       a .JAR file.

       -verbose
           Use this option to force the tool to generate more verbose messages, during its
           processing.

       -internalsf
           When present, the tool will include --which otherwise it does not-- the ".SF" file in
           the ".DSA" generated file.

       -sectionsonly
           When present, the tool will include in the ".SF" generated file --which otherwise it
           does not-- a header containing a hash of the whole manifest file.  When that header is
           included, the tool can quickly check, during verification, if the hash (in the header)
           matches or not the manifest file.

       -provider PROVIDER_CLASS_NAME
           A fully qualified class name of a Security Provider to add to the current list of
           Security Providers already installed in the JVM in-use. If a provider class is
           specified with this option, and was successfully added to the runtime --i.e. it was
           not already installed-- then the tool will attempt to remove this Security Provider
           before exiting.

       -help
           Prints a help text similar to this one.

       Signing options

       The following options may be specified when using the tool for signing purposes.

       -keystore URL
           Use this option to specify the location of the key store to use. The default value is
           a file URL referencing the file named .keystore located in the path returned by the
           call to "java.lang.System#getProperty(String)" using "user.home" as argument.

           If a URL was specified, but was found to be malformed --e.g. missing protocol
           element-- the tool will attempt to use the URL value as a file-name (with absolute or
           relative path-name) of a key store --as if the protocol was "file:".

       -storetype STORE_TYPE
           Use this option to specify the type of the key store to use. The default value, if
           this option is omitted, is that of the property "keystore.type" in the security
           properties file, which is obtained by invoking the static method call
           "getDefaultType()" in "java.security.KeyStore".

       -storepass PASSWORD
           Use this option to specify the password which will be used to unlock the key store. If
           this option is missing, the User will be prompted to provide a password.

       -keypass PASSWORD
           Use this option to specify the password which the tool will use to unlock the Key
           Entry associated with the designated Alias.

           If this option is omitted, the tool will first attempt to unlock the Key Entry using
           the same password protecting the key store. If this fails, you will then be prompted
           to provide a password.

       -sigfile NAME
           Use this option to designate a literal that will be used to construct file names for
           both the ".SF" and ".DSA" signature files. These files  will be generated, by the
           tool, and placed in the META-INF directory of the signed JAR.  Permissible characters
           for NAME must be in the range "a-zA-Z0-9_-".  All characters will be converted to
           upper-case ones.

           If this option is missing, the first eight characters of the ALIAS argument will be
           used. When this is the case, any character in ALIAS that is outside the permissible
           range of characters will be replaced by an underscore.

       -signedjar FILE
           Use this option to specify the file name of the signed JAR. If this option is omitted,
           then the signed JAR will be named the same as FILE; i.e., the input JAR file will be
           replaced with the signed copy.

       Verification options

       The following options may be specified when using the tool for verification purposes.

       -verify
           Use this option to indicate that the tool is to be used for verification purposes.

       -certs
           This option is used in conjunction with the -verbose option. When present, along with
           the -verbose option, the tool will print more detailed information about the
           certificates of the signer(s) being processed.

BUGS

SEE ALSO

AUTHOR