src/java.base/share/conf/security/java.security
changeset 47216 71c04702a3d5
parent 47031 78fb24b5f758
child 48546 707438d2d171
child 48554 592e22777742
equal deleted inserted replaced
47215:4ebc2e2fb97c 47216:71c04702a3d5
       
     1 #
       
     2 # This is the "master security properties file".
       
     3 #
       
     4 # An alternate java.security properties file may be specified
       
     5 # from the command line via the system property
       
     6 #
       
     7 #    -Djava.security.properties=<URL>
       
     8 #
       
     9 # This properties file appends to the master security properties file.
       
    10 # If both properties files specify values for the same key, the value
       
    11 # from the command-line properties file is selected, as it is the last
       
    12 # one loaded.
       
    13 #
       
    14 # Also, if you specify
       
    15 #
       
    16 #    -Djava.security.properties==<URL> (2 equals),
       
    17 #
       
    18 # then that properties file completely overrides the master security
       
    19 # properties file.
       
    20 #
       
    21 # To disable the ability to specify an additional properties file from
       
    22 # the command line, set the key security.overridePropertiesFile
       
    23 # to false in the master security properties file. It is set to true
       
    24 # by default.
       
    25 
       
    26 # In this file, various security properties are set for use by
       
    27 # java.security classes. This is where users can statically register
       
    28 # Cryptography Package Providers ("providers" for short). The term
       
    29 # "provider" refers to a package or set of packages that supply a
       
    30 # concrete implementation of a subset of the cryptography aspects of
       
    31 # the Java Security API. A provider may, for example, implement one or
       
    32 # more digital signature algorithms or message digest algorithms.
       
    33 #
       
    34 # Each provider must implement a subclass of the Provider class.
       
    35 # To register a provider in this master security properties file,
       
    36 # specify the provider and priority in the format
       
    37 #
       
    38 #    security.provider.<n>=<provName | className>
       
    39 #
       
    40 # This declares a provider, and specifies its preference
       
    41 # order n. The preference order is the order in which providers are
       
    42 # searched for requested algorithms (when no specific provider is
       
    43 # requested). The order is 1-based; 1 is the most preferred, followed
       
    44 # by 2, and so on.
       
    45 #
       
    46 # <provName> must specify the name of the Provider as passed to its super
       
    47 # class java.security.Provider constructor. This is for providers loaded
       
    48 # through the ServiceLoader mechanism.
       
    49 #
       
    50 # <className> must specify the subclass of the Provider class whose
       
    51 # constructor sets the values of various properties that are required
       
    52 # for the Java Security API to look up the algorithms or other
       
    53 # facilities implemented by the provider. This is for providers loaded
       
    54 # through classpath.
       
    55 #
       
    56 # Note: Providers can be dynamically registered instead by calls to
       
    57 # either the addProvider or insertProviderAt method in the Security
       
    58 # class.
       
    59 
       
    60 #
       
    61 # List of providers and their preference orders (see above):
       
    62 #
       
    63 #ifdef solaris
       
    64 security.provider.tbd=OracleUcrypto
       
    65 security.provider.tbd=SunPKCS11 ${java.home}/conf/security/sunpkcs11-solaris.cfg
       
    66 #endif
       
    67 security.provider.tbd=SUN
       
    68 security.provider.tbd=SunRsaSign
       
    69 security.provider.tbd=SunEC
       
    70 security.provider.tbd=SunJSSE
       
    71 security.provider.tbd=SunJCE
       
    72 security.provider.tbd=SunJGSS
       
    73 security.provider.tbd=SunSASL
       
    74 security.provider.tbd=XMLDSig
       
    75 security.provider.tbd=SunPCSC
       
    76 security.provider.tbd=JdkLDAP
       
    77 security.provider.tbd=JdkSASL
       
    78 #ifdef windows
       
    79 security.provider.tbd=SunMSCAPI
       
    80 #endif
       
    81 #ifdef macosx
       
    82 security.provider.tbd=Apple
       
    83 #endif
       
    84 #ifndef solaris
       
    85 security.provider.tbd=SunPKCS11
       
    86 #endif
       
    87 
       
    88 #
       
    89 # A list of preferred providers for specific algorithms. These providers will
       
    90 # be searched for matching algorithms before the list of registered providers.
       
    91 # Entries containing errors (parsing, etc) will be ignored. Use the
       
    92 # -Djava.security.debug=jca property to debug these errors.
       
    93 #
       
    94 # The property is a comma-separated list of serviceType.algorithm:provider
       
    95 # entries. The serviceType (example: "MessageDigest") is optional, and if
       
    96 # not specified, the algorithm applies to all service types that support it.
       
    97 # The algorithm is the standard algorithm name or transformation.
       
    98 # Transformations can be specified in their full standard name
       
    99 # (ex: AES/CBC/PKCS5Padding), or as partial matches (ex: AES, AES/CBC).
       
   100 # The provider is the name of the provider. Any provider that does not
       
   101 # also appear in the registered list will be ignored.
       
   102 #
       
   103 # There is a special serviceType for this property only to group a set of
       
   104 # algorithms together. The type is "Group" and is followed by an algorithm
       
   105 # keyword. Groups are to simplify and lessen the entries on the property
       
   106 # line. Current groups are:
       
   107 #   Group.SHA2 = SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256
       
   108 #   Group.HmacSHA2 = HmacSHA224, HmacSHA256, HmacSHA384, HmacSHA512
       
   109 #   Group.SHA2RSA = SHA224withRSA, SHA256withRSA, SHA384withRSA, SHA512withRSA
       
   110 #   Group.SHA2DSA = SHA224withDSA, SHA256withDSA, SHA384withDSA, SHA512withDSA
       
   111 #   Group.SHA2ECDSA = SHA224withECDSA, SHA256withECDSA, SHA384withECDSA, \
       
   112 #                     SHA512withECDSA
       
   113 #   Group.SHA3 = SHA3-224, SHA3-256, SHA3-384, SHA3-512
       
   114 #   Group.HmacSHA3 = HmacSHA3-224, HmacSHA3-256, HmacSHA3-384, HmacSHA3-512
       
   115 #
       
   116 # Example:
       
   117 #   jdk.security.provider.preferred=AES/GCM/NoPadding:SunJCE, \
       
   118 #         MessageDigest.SHA-256:SUN, Group.HmacSHA2:SunJCE
       
   119 #
       
   120 #ifdef solaris-sparc
       
   121 # Optional Solaris-SPARC configuration for non-FIPS 140 configurations.
       
   122 #   jdk.security.provider.preferred=AES:SunJCE, SHA1:SUN, Group.SHA2:SUN, \
       
   123 #   HmacSHA1:SunJCE, Group.HmacSHA2:SunJCE
       
   124 #
       
   125 #endif
       
   126 #jdk.security.provider.preferred=
       
   127 
       
   128 
       
   129 #
       
   130 # Sun Provider SecureRandom seed source.
       
   131 #
       
   132 # Select the primary source of seed data for the "NativePRNG", "SHA1PRNG"
       
   133 # and "DRBG" SecureRandom implementations in the "Sun" provider.
       
   134 # (Other SecureRandom implementations might also use this property.)
       
   135 #
       
   136 # On Unix-like systems (for example, Solaris/Linux/MacOS), the
       
   137 # "NativePRNG", "SHA1PRNG" and "DRBG" implementations obtains seed data from
       
   138 # special device files such as file:/dev/random.
       
   139 #
       
   140 # On Windows systems, specifying the URLs "file:/dev/random" or
       
   141 # "file:/dev/urandom" will enable the native Microsoft CryptoAPI seeding
       
   142 # mechanism for SHA1PRNG and DRBG.
       
   143 #
       
   144 # By default, an attempt is made to use the entropy gathering device
       
   145 # specified by the "securerandom.source" Security property.  If an
       
   146 # exception occurs while accessing the specified URL:
       
   147 #
       
   148 #     NativePRNG:
       
   149 #         a default value of /dev/random will be used.  If neither
       
   150 #         are available, the implementation will be disabled.
       
   151 #         "file" is the only currently supported protocol type.
       
   152 #
       
   153 #     SHA1PRNG and DRBG:
       
   154 #         the traditional system/thread activity algorithm will be used.
       
   155 #
       
   156 # The entropy gathering device can also be specified with the System
       
   157 # property "java.security.egd". For example:
       
   158 #
       
   159 #   % java -Djava.security.egd=file:/dev/random MainClass
       
   160 #
       
   161 # Specifying this System property will override the
       
   162 # "securerandom.source" Security property.
       
   163 #
       
   164 # In addition, if "file:/dev/random" or "file:/dev/urandom" is
       
   165 # specified, the "NativePRNG" implementation will be more preferred than
       
   166 # DRBG and SHA1PRNG in the Sun provider.
       
   167 #
       
   168 securerandom.source=file:/dev/random
       
   169 
       
   170 #
       
   171 # A list of known strong SecureRandom implementations.
       
   172 #
       
   173 # To help guide applications in selecting a suitable strong
       
   174 # java.security.SecureRandom implementation, Java distributions should
       
   175 # indicate a list of known strong implementations using the property.
       
   176 #
       
   177 # This is a comma-separated list of algorithm and/or algorithm:provider
       
   178 # entries.
       
   179 #
       
   180 #ifdef windows
       
   181 securerandom.strongAlgorithms=Windows-PRNG:SunMSCAPI,DRBG:SUN
       
   182 #endif
       
   183 #ifndef windows
       
   184 securerandom.strongAlgorithms=NativePRNGBlocking:SUN,DRBG:SUN
       
   185 #endif
       
   186 
       
   187 #
       
   188 # Sun provider DRBG configuration and default instantiation request.
       
   189 #
       
   190 # NIST SP 800-90Ar1 lists several DRBG mechanisms. Each can be configured
       
   191 # with a DRBG algorithm name, and can be instantiated with a security strength,
       
   192 # prediction resistance support, etc. This property defines the configuration
       
   193 # and the default instantiation request of "DRBG" SecureRandom implementations
       
   194 # in the SUN provider. (Other DRBG implementations can also use this property.)
       
   195 # Applications can request different instantiation parameters like security
       
   196 # strength, capability, personalization string using one of the
       
   197 # getInstance(...,SecureRandomParameters,...) methods with a
       
   198 # DrbgParameters.Instantiation argument, but other settings such as the
       
   199 # mechanism and DRBG algorithm names are not currently configurable by any API.
       
   200 #
       
   201 # Please note that the SUN implementation of DRBG always supports reseeding.
       
   202 #
       
   203 # The value of this property is a comma-separated list of all configurable
       
   204 # aspects. The aspects can appear in any order but the same aspect can only
       
   205 # appear at most once. Its BNF-style definition is:
       
   206 #
       
   207 #   Value:
       
   208 #     aspect { "," aspect }
       
   209 #
       
   210 #   aspect:
       
   211 #     mech_name | algorithm_name | strength | capability | df
       
   212 #
       
   213 #   // The DRBG mechanism to use. Default "Hash_DRBG"
       
   214 #   mech_name:
       
   215 #     "Hash_DRBG" | "HMAC_DRBG" | "CTR_DRBG"
       
   216 #
       
   217 #   // The DRBG algorithm name. The "SHA-***" names are for Hash_DRBG and
       
   218 #   // HMAC_DRBG, default "SHA-256". The "AES-***" names are for CTR_DRBG,
       
   219 #   // default "AES-128" when using the limited cryptographic or "AES-256"
       
   220 #   // when using the unlimited.
       
   221 #   algorithm_name:
       
   222 #     "SHA-224" | "SHA-512/224" | "SHA-256" |
       
   223 #     "SHA-512/256" | "SHA-384" | "SHA-512" |
       
   224 #     "AES-128" | "AES-192" | "AES-256"
       
   225 #
       
   226 #   // Security strength requested. Default "128"
       
   227 #   strength:
       
   228 #     "112" | "128" | "192" | "256"
       
   229 #
       
   230 #   // Prediction resistance and reseeding request. Default "none"
       
   231 #   //  "pr_and_reseed" - Both prediction resistance and reseeding
       
   232 #   //                    support requested
       
   233 #   //  "reseed_only"   - Only reseeding support requested
       
   234 #   //  "none"          - Neither prediction resistance not reseeding
       
   235 #   //                    support requested
       
   236 #   pr:
       
   237 #     "pr_and_reseed" | "reseed_only" | "none"
       
   238 #
       
   239 #   // Whether a derivation function should be used. only applicable
       
   240 #   // to CTR_DRBG. Default "use_df"
       
   241 #   df:
       
   242 #     "use_df" | "no_df"
       
   243 #
       
   244 # Examples,
       
   245 #   securerandom.drbg.config=Hash_DRBG,SHA-224,112,none
       
   246 #   securerandom.drbg.config=CTR_DRBG,AES-256,192,pr_and_reseed,use_df
       
   247 #
       
   248 # The default value is an empty string, which is equivalent to
       
   249 #   securerandom.drbg.config=Hash_DRBG,SHA-256,128,none
       
   250 #
       
   251 securerandom.drbg.config=
       
   252 
       
   253 #
       
   254 # Class to instantiate as the javax.security.auth.login.Configuration
       
   255 # provider.
       
   256 #
       
   257 login.configuration.provider=sun.security.provider.ConfigFile
       
   258 
       
   259 #
       
   260 # Default login configuration file
       
   261 #
       
   262 #login.config.url.1=file:${user.home}/.java.login.config
       
   263 
       
   264 #
       
   265 # Class to instantiate as the system Policy. This is the name of the class
       
   266 # that will be used as the Policy object. The system class loader is used to
       
   267 # locate this class.
       
   268 #
       
   269 policy.provider=sun.security.provider.PolicyFile
       
   270 
       
   271 # The default is to have a single system-wide policy file,
       
   272 # and a policy file in the user's home directory.
       
   273 #
       
   274 policy.url.1=file:${java.home}/conf/security/java.policy
       
   275 policy.url.2=file:${user.home}/.java.policy
       
   276 
       
   277 # whether or not we expand properties in the policy file
       
   278 # if this is set to false, properties (${...}) will not be expanded in policy
       
   279 # files.
       
   280 #
       
   281 policy.expandProperties=true
       
   282 
       
   283 # whether or not we allow an extra policy to be passed on the command line
       
   284 # with -Djava.security.policy=somefile. Comment out this line to disable
       
   285 # this feature.
       
   286 #
       
   287 policy.allowSystemProperty=true
       
   288 
       
   289 # whether or not we look into the IdentityScope for trusted Identities
       
   290 # when encountering a 1.1 signed JAR file. If the identity is found
       
   291 # and is trusted, we grant it AllPermission. Note: the default policy
       
   292 # provider (sun.security.provider.PolicyFile) does not support this property.
       
   293 #
       
   294 policy.ignoreIdentityScope=false
       
   295 
       
   296 #
       
   297 # Default keystore type.
       
   298 #
       
   299 keystore.type=pkcs12
       
   300 
       
   301 #
       
   302 # Controls compatibility mode for JKS and PKCS12 keystore types.
       
   303 #
       
   304 # When set to 'true', both JKS and PKCS12 keystore types support loading
       
   305 # keystore files in either JKS or PKCS12 format. When set to 'false' the
       
   306 # JKS keystore type supports loading only JKS keystore files and the PKCS12
       
   307 # keystore type supports loading only PKCS12 keystore files.
       
   308 #
       
   309 keystore.type.compat=true
       
   310 
       
   311 #
       
   312 # List of comma-separated packages that start with or equal this string
       
   313 # will cause a security exception to be thrown when passed to the
       
   314 # SecurityManager::checkPackageAccess method unless the corresponding
       
   315 # RuntimePermission("accessClassInPackage."+package) has been granted.
       
   316 #
       
   317 package.access=sun.misc.,\
       
   318                sun.reflect.,\
       
   319 
       
   320 #
       
   321 # List of comma-separated packages that start with or equal this string
       
   322 # will cause a security exception to be thrown when passed to the
       
   323 # SecurityManager::checkPackageDefinition method unless the corresponding
       
   324 # RuntimePermission("defineClassInPackage."+package) has been granted.
       
   325 #
       
   326 # By default, none of the class loaders supplied with the JDK call
       
   327 # checkPackageDefinition.
       
   328 #
       
   329 package.definition=sun.misc.,\
       
   330                    sun.reflect.,\
       
   331 
       
   332 #
       
   333 # Determines whether this properties file can be appended to
       
   334 # or overridden on the command line via -Djava.security.properties
       
   335 #
       
   336 security.overridePropertiesFile=true
       
   337 
       
   338 #
       
   339 # Determines the default key and trust manager factory algorithms for
       
   340 # the javax.net.ssl package.
       
   341 #
       
   342 ssl.KeyManagerFactory.algorithm=SunX509
       
   343 ssl.TrustManagerFactory.algorithm=PKIX
       
   344 
       
   345 #
       
   346 # The Java-level namelookup cache policy for successful lookups:
       
   347 #
       
   348 # any negative value: caching forever
       
   349 # any positive value: the number of seconds to cache an address for
       
   350 # zero: do not cache
       
   351 #
       
   352 # default value is forever (FOREVER). For security reasons, this
       
   353 # caching is made forever when a security manager is set. When a security
       
   354 # manager is not set, the default behavior in this implementation
       
   355 # is to cache for 30 seconds.
       
   356 #
       
   357 # NOTE: setting this to anything other than the default value can have
       
   358 #       serious security implications. Do not set it unless
       
   359 #       you are sure you are not exposed to DNS spoofing attack.
       
   360 #
       
   361 #networkaddress.cache.ttl=-1
       
   362 
       
   363 # The Java-level namelookup cache policy for failed lookups:
       
   364 #
       
   365 # any negative value: cache forever
       
   366 # any positive value: the number of seconds to cache negative lookup results
       
   367 # zero: do not cache
       
   368 #
       
   369 # In some Microsoft Windows networking environments that employ
       
   370 # the WINS name service in addition to DNS, name service lookups
       
   371 # that fail may take a noticeably long time to return (approx. 5 seconds).
       
   372 # For this reason the default caching policy is to maintain these
       
   373 # results for 10 seconds.
       
   374 #
       
   375 networkaddress.cache.negative.ttl=10
       
   376 
       
   377 #
       
   378 # Properties to configure OCSP for certificate revocation checking
       
   379 #
       
   380 
       
   381 # Enable OCSP
       
   382 #
       
   383 # By default, OCSP is not used for certificate revocation checking.
       
   384 # This property enables the use of OCSP when set to the value "true".
       
   385 #
       
   386 # NOTE: SocketPermission is required to connect to an OCSP responder.
       
   387 #
       
   388 # Example,
       
   389 #   ocsp.enable=true
       
   390 
       
   391 #
       
   392 # Location of the OCSP responder
       
   393 #
       
   394 # By default, the location of the OCSP responder is determined implicitly
       
   395 # from the certificate being validated. This property explicitly specifies
       
   396 # the location of the OCSP responder. The property is used when the
       
   397 # Authority Information Access extension (defined in RFC 5280) is absent
       
   398 # from the certificate or when it requires overriding.
       
   399 #
       
   400 # Example,
       
   401 #   ocsp.responderURL=http://ocsp.example.net:80
       
   402 
       
   403 #
       
   404 # Subject name of the OCSP responder's certificate
       
   405 #
       
   406 # By default, the certificate of the OCSP responder is that of the issuer
       
   407 # of the certificate being validated. This property identifies the certificate
       
   408 # of the OCSP responder when the default does not apply. Its value is a string
       
   409 # distinguished name (defined in RFC 2253) which identifies a certificate in
       
   410 # the set of certificates supplied during cert path validation. In cases where
       
   411 # the subject name alone is not sufficient to uniquely identify the certificate
       
   412 # then both the "ocsp.responderCertIssuerName" and
       
   413 # "ocsp.responderCertSerialNumber" properties must be used instead. When this
       
   414 # property is set then those two properties are ignored.
       
   415 #
       
   416 # Example,
       
   417 #   ocsp.responderCertSubjectName=CN=OCSP Responder, O=XYZ Corp
       
   418 
       
   419 #
       
   420 # Issuer name of the OCSP responder's certificate
       
   421 #
       
   422 # By default, the certificate of the OCSP responder is that of the issuer
       
   423 # of the certificate being validated. This property identifies the certificate
       
   424 # of the OCSP responder when the default does not apply. Its value is a string
       
   425 # distinguished name (defined in RFC 2253) which identifies a certificate in
       
   426 # the set of certificates supplied during cert path validation. When this
       
   427 # property is set then the "ocsp.responderCertSerialNumber" property must also
       
   428 # be set. When the "ocsp.responderCertSubjectName" property is set then this
       
   429 # property is ignored.
       
   430 #
       
   431 # Example,
       
   432 #   ocsp.responderCertIssuerName=CN=Enterprise CA, O=XYZ Corp
       
   433 
       
   434 #
       
   435 # Serial number of the OCSP responder's certificate
       
   436 #
       
   437 # By default, the certificate of the OCSP responder is that of the issuer
       
   438 # of the certificate being validated. This property identifies the certificate
       
   439 # of the OCSP responder when the default does not apply. Its value is a string
       
   440 # of hexadecimal digits (colon or space separators may be present) which
       
   441 # identifies a certificate in the set of certificates supplied during cert path
       
   442 # validation. When this property is set then the "ocsp.responderCertIssuerName"
       
   443 # property must also be set. When the "ocsp.responderCertSubjectName" property
       
   444 # is set then this property is ignored.
       
   445 #
       
   446 # Example,
       
   447 #   ocsp.responderCertSerialNumber=2A:FF:00
       
   448 
       
   449 #
       
   450 # Policy for failed Kerberos KDC lookups:
       
   451 #
       
   452 # When a KDC is unavailable (network error, service failure, etc), it is
       
   453 # put inside a blacklist and accessed less often for future requests. The
       
   454 # value (case-insensitive) for this policy can be:
       
   455 #
       
   456 # tryLast
       
   457 #    KDCs in the blacklist are always tried after those not on the list.
       
   458 #
       
   459 # tryLess[:max_retries,timeout]
       
   460 #    KDCs in the blacklist are still tried by their order in the configuration,
       
   461 #    but with smaller max_retries and timeout values. max_retries and timeout
       
   462 #    are optional numerical parameters (default 1 and 5000, which means once
       
   463 #    and 5 seconds). Please notes that if any of the values defined here is
       
   464 #    more than what is defined in krb5.conf, it will be ignored.
       
   465 #
       
   466 # Whenever a KDC is detected as available, it is removed from the blacklist.
       
   467 # The blacklist is reset when krb5.conf is reloaded. You can add
       
   468 # refreshKrb5Config=true to a JAAS configuration file so that krb5.conf is
       
   469 # reloaded whenever a JAAS authentication is attempted.
       
   470 #
       
   471 # Example,
       
   472 #   krb5.kdc.bad.policy = tryLast
       
   473 #   krb5.kdc.bad.policy = tryLess:2,2000
       
   474 #
       
   475 krb5.kdc.bad.policy = tryLast
       
   476 
       
   477 #
       
   478 # Algorithm restrictions for certification path (CertPath) processing
       
   479 #
       
   480 # In some environments, certain algorithms or key lengths may be undesirable
       
   481 # for certification path building and validation.  For example, "MD2" is
       
   482 # generally no longer considered to be a secure hash algorithm.  This section
       
   483 # describes the mechanism for disabling algorithms based on algorithm name
       
   484 # and/or key length.  This includes algorithms used in certificates, as well
       
   485 # as revocation information such as CRLs and signed OCSP Responses.
       
   486 # The syntax of the disabled algorithm string is described as follows:
       
   487 #   DisabledAlgorithms:
       
   488 #       " DisabledAlgorithm { , DisabledAlgorithm } "
       
   489 #
       
   490 #   DisabledAlgorithm:
       
   491 #       AlgorithmName [Constraint] { '&' Constraint }
       
   492 #
       
   493 #   AlgorithmName:
       
   494 #       (see below)
       
   495 #
       
   496 #   Constraint:
       
   497 #       KeySizeConstraint | CAConstraint | DenyAfterConstraint |
       
   498 #       UsageConstraint
       
   499 #
       
   500 #   KeySizeConstraint:
       
   501 #       keySize Operator KeyLength
       
   502 #
       
   503 #   Operator:
       
   504 #       <= | < | == | != | >= | >
       
   505 #
       
   506 #   KeyLength:
       
   507 #       Integer value of the algorithm's key length in bits
       
   508 #
       
   509 #   CAConstraint:
       
   510 #       jdkCA
       
   511 #
       
   512 #   DenyAfterConstraint:
       
   513 #       denyAfter YYYY-MM-DD
       
   514 #
       
   515 #   UsageConstraint:
       
   516 #       usage [TLSServer] [TLSClient] [SignedJAR]
       
   517 #
       
   518 # The "AlgorithmName" is the standard algorithm name of the disabled
       
   519 # algorithm. See "Java Cryptography Architecture Standard Algorithm Name
       
   520 # Documentation" for information about Standard Algorithm Names.  Matching
       
   521 # is performed using a case-insensitive sub-element matching rule.  (For
       
   522 # example, in "SHA1withECDSA" the sub-elements are "SHA1" for hashing and
       
   523 # "ECDSA" for signatures.)  If the assertion "AlgorithmName" is a
       
   524 # sub-element of the certificate algorithm name, the algorithm will be
       
   525 # rejected during certification path building and validation.  For example,
       
   526 # the assertion algorithm name "DSA" will disable all certificate algorithms
       
   527 # that rely on DSA, such as NONEwithDSA, SHA1withDSA.  However, the assertion
       
   528 # will not disable algorithms related to "ECDSA".
       
   529 #
       
   530 # A "Constraint" defines restrictions on the keys and/or certificates for
       
   531 # a specified AlgorithmName:
       
   532 #
       
   533 #   KeySizeConstraint:
       
   534 #     keySize Operator KeyLength
       
   535 #       The constraint requires a key of a valid size range if the
       
   536 #       "AlgorithmName" is of a key algorithm.  The "KeyLength" indicates
       
   537 #       the key size specified in number of bits.  For example,
       
   538 #       "RSA keySize <= 1024" indicates that any RSA key with key size less
       
   539 #       than or equal to 1024 bits should be disabled, and
       
   540 #       "RSA keySize < 1024, RSA keySize > 2048" indicates that any RSA key
       
   541 #       with key size less than 1024 or greater than 2048 should be disabled.
       
   542 #       This constraint is only used on algorithms that have a key size.
       
   543 #
       
   544 #   CAConstraint:
       
   545 #     jdkCA
       
   546 #       This constraint prohibits the specified algorithm only if the
       
   547 #       algorithm is used in a certificate chain that terminates at a marked
       
   548 #       trust anchor in the lib/security/cacerts keystore.  If the jdkCA
       
   549 #       constraint is not set, then all chains using the specified algorithm
       
   550 #       are restricted.  jdkCA may only be used once in a DisabledAlgorithm
       
   551 #       expression.
       
   552 #       Example:  To apply this constraint to SHA-1 certificates, include
       
   553 #       the following:  "SHA1 jdkCA"
       
   554 #
       
   555 #   DenyAfterConstraint:
       
   556 #     denyAfter YYYY-MM-DD
       
   557 #       This constraint prohibits a certificate with the specified algorithm
       
   558 #       from being used after the date regardless of the certificate's
       
   559 #       validity.  JAR files that are signed and timestamped before the
       
   560 #       constraint date with certificates containing the disabled algorithm
       
   561 #       will not be restricted.  The date is processed in the UTC timezone.
       
   562 #       This constraint can only be used once in a DisabledAlgorithm
       
   563 #       expression.
       
   564 #       Example:  To deny usage of RSA 2048 bit certificates after Feb 3 2020,
       
   565 #       use the following:  "RSA keySize == 2048 & denyAfter 2020-02-03"
       
   566 #
       
   567 #   UsageConstraint:
       
   568 #     usage [TLSServer] [TLSClient] [SignedJAR]
       
   569 #       This constraint prohibits the specified algorithm for
       
   570 #       a specified usage.  This should be used when disabling an algorithm
       
   571 #       for all usages is not practical. 'TLSServer' restricts the algorithm
       
   572 #       in TLS server certificate chains when server authentication is
       
   573 #       performed. 'TLSClient' restricts the algorithm in TLS client
       
   574 #       certificate chains when client authentication is performed.
       
   575 #       'SignedJAR' constrains use of certificates in signed jar files.
       
   576 #       The usage type follows the keyword and more than one usage type can
       
   577 #       be specified with a whitespace delimiter.
       
   578 #       Example:  "SHA1 usage TLSServer TLSClient"
       
   579 #
       
   580 # When an algorithm must satisfy more than one constraint, it must be
       
   581 # delimited by an ampersand '&'.  For example, to restrict certificates in a
       
   582 # chain that terminate at a distribution provided trust anchor and contain
       
   583 # RSA keys that are less than or equal to 1024 bits, add the following
       
   584 # constraint:  "RSA keySize <= 1024 & jdkCA".
       
   585 #
       
   586 # All DisabledAlgorithms expressions are processed in the order defined in the
       
   587 # property.  This requires lower keysize constraints to be specified
       
   588 # before larger keysize constraints of the same algorithm.  For example:
       
   589 # "RSA keySize < 1024 & jdkCA, RSA keySize < 2048".
       
   590 #
       
   591 # Note: The algorithm restrictions do not apply to trust anchors or
       
   592 # self-signed certificates.
       
   593 #
       
   594 # Note: This property is currently used by Oracle's PKIX implementation. It
       
   595 # is not guaranteed to be examined and used by other implementations.
       
   596 #
       
   597 # Example:
       
   598 #   jdk.certpath.disabledAlgorithms=MD2, DSA, RSA keySize < 2048
       
   599 #
       
   600 #
       
   601 jdk.certpath.disabledAlgorithms=MD2, MD5, SHA1 jdkCA & usage TLSServer, \
       
   602     RSA keySize < 1024, DSA keySize < 1024, EC keySize < 224
       
   603 
       
   604 #
       
   605 # Algorithm restrictions for signed JAR files
       
   606 #
       
   607 # In some environments, certain algorithms or key lengths may be undesirable
       
   608 # for signed JAR validation.  For example, "MD2" is generally no longer
       
   609 # considered to be a secure hash algorithm.  This section describes the
       
   610 # mechanism for disabling algorithms based on algorithm name and/or key length.
       
   611 # JARs signed with any of the disabled algorithms or key sizes will be treated
       
   612 # as unsigned.
       
   613 #
       
   614 # The syntax of the disabled algorithm string is described as follows:
       
   615 #   DisabledAlgorithms:
       
   616 #       " DisabledAlgorithm { , DisabledAlgorithm } "
       
   617 #
       
   618 #   DisabledAlgorithm:
       
   619 #       AlgorithmName [Constraint] { '&' Constraint }
       
   620 #
       
   621 #   AlgorithmName:
       
   622 #       (see below)
       
   623 #
       
   624 #   Constraint:
       
   625 #       KeySizeConstraint | DenyAfterConstraint
       
   626 #
       
   627 #   KeySizeConstraint:
       
   628 #       keySize Operator KeyLength
       
   629 #
       
   630 #   DenyAfterConstraint:
       
   631 #       denyAfter YYYY-MM-DD
       
   632 #
       
   633 #   Operator:
       
   634 #       <= | < | == | != | >= | >
       
   635 #
       
   636 #   KeyLength:
       
   637 #       Integer value of the algorithm's key length in bits
       
   638 #
       
   639 # Note: This property is currently used by the JDK Reference
       
   640 # implementation. It is not guaranteed to be examined and used by other
       
   641 # implementations.
       
   642 #
       
   643 # See "jdk.certpath.disabledAlgorithms" for syntax descriptions.
       
   644 #
       
   645 jdk.jar.disabledAlgorithms=MD2, MD5, RSA keySize < 1024, \
       
   646       DSA keySize < 1024
       
   647 
       
   648 #
       
   649 # Algorithm restrictions for Secure Socket Layer/Transport Layer Security
       
   650 # (SSL/TLS/DTLS) processing
       
   651 #
       
   652 # In some environments, certain algorithms or key lengths may be undesirable
       
   653 # when using SSL/TLS/DTLS.  This section describes the mechanism for disabling
       
   654 # algorithms during SSL/TLS/DTLS security parameters negotiation, including
       
   655 # protocol version negotiation, cipher suites selection, peer authentication
       
   656 # and key exchange mechanisms.
       
   657 #
       
   658 # Disabled algorithms will not be negotiated for SSL/TLS connections, even
       
   659 # if they are enabled explicitly in an application.
       
   660 #
       
   661 # For PKI-based peer authentication and key exchange mechanisms, this list
       
   662 # of disabled algorithms will also be checked during certification path
       
   663 # building and validation, including algorithms used in certificates, as
       
   664 # well as revocation information such as CRLs and signed OCSP Responses.
       
   665 # This is in addition to the jdk.certpath.disabledAlgorithms property above.
       
   666 #
       
   667 # See the specification of "jdk.certpath.disabledAlgorithms" for the
       
   668 # syntax of the disabled algorithm string.
       
   669 #
       
   670 # Note: The algorithm restrictions do not apply to trust anchors or
       
   671 # self-signed certificates.
       
   672 #
       
   673 # Note: This property is currently used by the JDK Reference implementation.
       
   674 # It is not guaranteed to be examined and used by other implementations.
       
   675 #
       
   676 # Example:
       
   677 #   jdk.tls.disabledAlgorithms=MD5, SSLv3, DSA, RSA keySize < 2048
       
   678 jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 1024, \
       
   679     EC keySize < 224
       
   680 
       
   681 #
       
   682 # Legacy algorithms for Secure Socket Layer/Transport Layer Security (SSL/TLS)
       
   683 # processing in JSSE implementation.
       
   684 #
       
   685 # In some environments, a certain algorithm may be undesirable but it
       
   686 # cannot be disabled because of its use in legacy applications.  Legacy
       
   687 # algorithms may still be supported, but applications should not use them
       
   688 # as the security strength of legacy algorithms are usually not strong enough
       
   689 # in practice.
       
   690 #
       
   691 # During SSL/TLS security parameters negotiation, legacy algorithms will
       
   692 # not be negotiated unless there are no other candidates.
       
   693 #
       
   694 # The syntax of the legacy algorithms string is described as this Java
       
   695 # BNF-style:
       
   696 #   LegacyAlgorithms:
       
   697 #       " LegacyAlgorithm { , LegacyAlgorithm } "
       
   698 #
       
   699 #   LegacyAlgorithm:
       
   700 #       AlgorithmName (standard JSSE algorithm name)
       
   701 #
       
   702 # See the specification of security property "jdk.certpath.disabledAlgorithms"
       
   703 # for the syntax and description of the "AlgorithmName" notation.
       
   704 #
       
   705 # Per SSL/TLS specifications, cipher suites have the form:
       
   706 #       SSL_KeyExchangeAlg_WITH_CipherAlg_MacAlg
       
   707 # or
       
   708 #       TLS_KeyExchangeAlg_WITH_CipherAlg_MacAlg
       
   709 #
       
   710 # For example, the cipher suite TLS_RSA_WITH_AES_128_CBC_SHA uses RSA as the
       
   711 # key exchange algorithm, AES_128_CBC (128 bits AES cipher algorithm in CBC
       
   712 # mode) as the cipher (encryption) algorithm, and SHA-1 as the message digest
       
   713 # algorithm for HMAC.
       
   714 #
       
   715 # The LegacyAlgorithm can be one of the following standard algorithm names:
       
   716 #     1. JSSE cipher suite name, e.g., TLS_RSA_WITH_AES_128_CBC_SHA
       
   717 #     2. JSSE key exchange algorithm name, e.g., RSA
       
   718 #     3. JSSE cipher (encryption) algorithm name, e.g., AES_128_CBC
       
   719 #     4. JSSE message digest algorithm name, e.g., SHA
       
   720 #
       
   721 # See SSL/TLS specifications and "Java Cryptography Architecture Standard
       
   722 # Algorithm Name Documentation" for information about the algorithm names.
       
   723 #
       
   724 # Note: If a legacy algorithm is also restricted through the
       
   725 # jdk.tls.disabledAlgorithms property or the
       
   726 # java.security.AlgorithmConstraints API (See
       
   727 # javax.net.ssl.SSLParameters.setAlgorithmConstraints()),
       
   728 # then the algorithm is completely disabled and will not be negotiated.
       
   729 #
       
   730 # Note: This property is currently used by the JDK Reference implementation.
       
   731 # It is not guaranteed to be examined and used by other implementations.
       
   732 # There is no guarantee the property will continue to exist or be of the
       
   733 # same syntax in future releases.
       
   734 #
       
   735 # Example:
       
   736 #   jdk.tls.legacyAlgorithms=DH_anon, DES_CBC, SSL_RSA_WITH_RC4_128_MD5
       
   737 #
       
   738 jdk.tls.legacyAlgorithms= \
       
   739         K_NULL, C_NULL, M_NULL, \
       
   740         DHE_DSS_EXPORT, DHE_RSA_EXPORT, DH_anon_EXPORT, DH_DSS_EXPORT, \
       
   741         DH_RSA_EXPORT, RSA_EXPORT, \
       
   742         DH_anon, ECDH_anon, \
       
   743         RC4_128, RC4_40, DES_CBC, DES40_CBC, \
       
   744         3DES_EDE_CBC
       
   745 
       
   746 #
       
   747 # The pre-defined default finite field Diffie-Hellman ephemeral (DHE)
       
   748 # parameters for Transport Layer Security (SSL/TLS/DTLS) processing.
       
   749 #
       
   750 # In traditional SSL/TLS/DTLS connections where finite field DHE parameters
       
   751 # negotiation mechanism is not used, the server offers the client group
       
   752 # parameters, base generator g and prime modulus p, for DHE key exchange.
       
   753 # It is recommended to use dynamic group parameters.  This property defines
       
   754 # a mechanism that allows you to specify custom group parameters.
       
   755 #
       
   756 # The syntax of this property string is described as this Java BNF-style:
       
   757 #   DefaultDHEParameters:
       
   758 #       DefinedDHEParameters { , DefinedDHEParameters }
       
   759 #
       
   760 #   DefinedDHEParameters:
       
   761 #       "{" DHEPrimeModulus , DHEBaseGenerator "}"
       
   762 #
       
   763 #   DHEPrimeModulus:
       
   764 #       HexadecimalDigits
       
   765 #
       
   766 #   DHEBaseGenerator:
       
   767 #       HexadecimalDigits
       
   768 #
       
   769 #   HexadecimalDigits:
       
   770 #       HexadecimalDigit { HexadecimalDigit }
       
   771 #
       
   772 #   HexadecimalDigit: one of
       
   773 #       0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f
       
   774 #
       
   775 # Whitespace characters are ignored.
       
   776 #
       
   777 # The "DefinedDHEParameters" defines the custom group parameters, prime
       
   778 # modulus p and base generator g, for a particular size of prime modulus p.
       
   779 # The "DHEPrimeModulus" defines the hexadecimal prime modulus p, and the
       
   780 # "DHEBaseGenerator" defines the hexadecimal base generator g of a group
       
   781 # parameter.  It is recommended to use safe primes for the custom group
       
   782 # parameters.
       
   783 #
       
   784 # If this property is not defined or the value is empty, the underlying JSSE
       
   785 # provider's default group parameter is used for each connection.
       
   786 #
       
   787 # If the property value does not follow the grammar, or a particular group
       
   788 # parameter is not valid, the connection will fall back and use the
       
   789 # underlying JSSE provider's default group parameter.
       
   790 #
       
   791 # Note: This property is currently used by OpenJDK's JSSE implementation. It
       
   792 # is not guaranteed to be examined and used by other implementations.
       
   793 #
       
   794 # Example:
       
   795 #   jdk.tls.server.defaultDHEParameters=
       
   796 #       { \
       
   797 #       FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1 \
       
   798 #       29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD \
       
   799 #       EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245 \
       
   800 #       E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED \
       
   801 #       EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE65381 \
       
   802 #       FFFFFFFF FFFFFFFF, 2}
       
   803 
       
   804 #
       
   805 # Cryptographic Jurisdiction Policy defaults
       
   806 #
       
   807 # Import and export control rules on cryptographic software vary from
       
   808 # country to country.  By default, Java provides two different sets of
       
   809 # cryptographic policy files[1]:
       
   810 #
       
   811 #     unlimited:  These policy files contain no restrictions on cryptographic
       
   812 #                 strengths or algorithms
       
   813 #
       
   814 #     limited:    These policy files contain more restricted cryptographic
       
   815 #                 strengths
       
   816 #
       
   817 # The default setting is determined by the value of the “crypto.policy”
       
   818 # Security property below. If your country or usage requires the
       
   819 # traditional restrictive policy, the “limited” Java cryptographic
       
   820 # policy is still available and may be appropriate for your environment.
       
   821 #
       
   822 # If you have restrictions that do not fit either use case mentioned
       
   823 # above, Java provides the capability to customize these policy files.
       
   824 # The “crypto.policy” security property points to a subdirectory
       
   825 # within <java-home>/conf/security/policy/ which can be customized.
       
   826 # Please see the <java-home>/conf/security/policy/README.txt file or consult
       
   827 # the Java Security Guide/JCA documentation for more information.
       
   828 #
       
   829 # YOU ARE ADVISED TO CONSULT YOUR EXPORT/IMPORT CONTROL COUNSEL OR ATTORNEY
       
   830 # TO DETERMINE THE EXACT REQUIREMENTS.
       
   831 #
       
   832 # [1] Please note that the JCE for Java SE, including the JCE framework,
       
   833 # cryptographic policy files, and standard JCE providers provided with
       
   834 # the Java SE, have been reviewed and approved for export as mass market
       
   835 # encryption item by the US Bureau of Industry and Security.
       
   836 #
       
   837 # Note: This property is currently used by the JDK Reference implementation.
       
   838 # It is not guaranteed to be examined and used by other implementations.
       
   839 #
       
   840 crypto.policy=crypto.policydir-tbd
       
   841 
       
   842 #
       
   843 # The policy for the XML Signature secure validation mode. The mode is
       
   844 # enabled by setting the property "org.jcp.xml.dsig.secureValidation" to
       
   845 # true with the javax.xml.crypto.XMLCryptoContext.setProperty() method,
       
   846 # or by running the code with a SecurityManager.
       
   847 #
       
   848 #   Policy:
       
   849 #       Constraint {"," Constraint }
       
   850 #   Constraint:
       
   851 #       AlgConstraint | MaxTransformsConstraint | MaxReferencesConstraint |
       
   852 #       ReferenceUriSchemeConstraint | KeySizeConstraint | OtherConstraint
       
   853 #   AlgConstraint
       
   854 #       "disallowAlg" Uri
       
   855 #   MaxTransformsConstraint:
       
   856 #       "maxTransforms" Integer
       
   857 #   MaxReferencesConstraint:
       
   858 #       "maxReferences" Integer
       
   859 #   ReferenceUriSchemeConstraint:
       
   860 #       "disallowReferenceUriSchemes" String { String }
       
   861 #   KeySizeConstraint:
       
   862 #       "minKeySize" KeyAlg Integer
       
   863 #   OtherConstraint:
       
   864 #       "noDuplicateIds" | "noRetrievalMethodLoops"
       
   865 #
       
   866 # For AlgConstraint, Uri is the algorithm URI String that is not allowed.
       
   867 # See the XML Signature Recommendation for more information on algorithm
       
   868 # URI Identifiers. For KeySizeConstraint, KeyAlg is the standard algorithm
       
   869 # name of the key type (ex: "RSA"). If the MaxTransformsConstraint,
       
   870 # MaxReferencesConstraint or KeySizeConstraint (for the same key type) is
       
   871 # specified more than once, only the last entry is enforced.
       
   872 #
       
   873 # Note: This property is currently used by the JDK Reference implementation. It
       
   874 # is not guaranteed to be examined and used by other implementations.
       
   875 #
       
   876 jdk.xml.dsig.secureValidationPolicy=\
       
   877     disallowAlg http://www.w3.org/TR/1999/REC-xslt-19991116,\
       
   878     disallowAlg http://www.w3.org/2001/04/xmldsig-more#rsa-md5,\
       
   879     disallowAlg http://www.w3.org/2001/04/xmldsig-more#hmac-md5,\
       
   880     disallowAlg http://www.w3.org/2001/04/xmldsig-more#md5,\
       
   881     maxTransforms 5,\
       
   882     maxReferences 30,\
       
   883     disallowReferenceUriSchemes file http https,\
       
   884     minKeySize RSA 1024,\
       
   885     minKeySize DSA 1024,\
       
   886     noDuplicateIds,\
       
   887     noRetrievalMethodLoops
       
   888 
       
   889 #
       
   890 # Serialization process-wide filter
       
   891 #
       
   892 # A filter, if configured, is used by java.io.ObjectInputStream during
       
   893 # deserialization to check the contents of the stream.
       
   894 # A filter is configured as a sequence of patterns, each pattern is either
       
   895 # matched against the name of a class in the stream or defines a limit.
       
   896 # Patterns are separated by ";" (semicolon).
       
   897 # Whitespace is significant and is considered part of the pattern.
       
   898 #
       
   899 # If a pattern includes a "=", it sets a limit.
       
   900 # If a limit appears more than once the last value is used.
       
   901 # Limits are checked before classes regardless of the order in the
       
   902 # sequence of patterns.
       
   903 # If any of the limits are exceeded, the filter status is REJECTED.
       
   904 #
       
   905 #   maxdepth=value - the maximum depth of a graph
       
   906 #   maxrefs=value  - the maximum number of internal references
       
   907 #   maxbytes=value - the maximum number of bytes in the input stream
       
   908 #   maxarray=value - the maximum array length allowed
       
   909 #
       
   910 # Other patterns, from left to right, match the class or package name as
       
   911 # returned from Class.getName.
       
   912 # If the class is an array type, the class or package to be matched is the
       
   913 # element type.
       
   914 # Arrays of any number of dimensions are treated the same as the element type.
       
   915 # For example, a pattern of "!example.Foo", rejects creation of any instance or
       
   916 # array of example.Foo.
       
   917 #
       
   918 # If the pattern starts with "!", the status is REJECTED if the remaining
       
   919 # pattern is matched; otherwise the status is ALLOWED if the pattern matches.
       
   920 # If the pattern contains "/", the non-empty prefix up to the "/" is the
       
   921 # module name;
       
   922 #   if the module name matches the module name of the class then
       
   923 #   the remaining pattern is matched with the class name.
       
   924 #   If there is no "/", the module name is not compared.
       
   925 # If the pattern ends with ".**" it matches any class in the package and all
       
   926 # subpackages.
       
   927 # If the pattern ends with ".*" it matches any class in the package.
       
   928 # If the pattern ends with "*", it matches any class with the pattern as a
       
   929 # prefix.
       
   930 # If the pattern is equal to the class name, it matches.
       
   931 # Otherwise, the status is UNDECIDED.
       
   932 #
       
   933 #jdk.serialFilter=pattern;pattern
       
   934 
       
   935 #
       
   936 # RMI Registry Serial Filter
       
   937 #
       
   938 # The filter pattern uses the same format as jdk.serialFilter.
       
   939 # This filter can override the builtin filter if additional types need to be
       
   940 # allowed or rejected from the RMI Registry or to decrease limits but not
       
   941 # to increase limits.
       
   942 # If the limits (maxdepth, maxrefs, or maxbytes) are exceeded, the object is rejected.
       
   943 #
       
   944 # Each non-array type is allowed or rejected if it matches one of the patterns,
       
   945 # evaluated from left to right, and is otherwise allowed. Arrays of any
       
   946 # component type, including subarrays and arrays of primitives, are allowed.
       
   947 #
       
   948 # Array construction of any component type, including subarrays and arrays of
       
   949 # primitives, are allowed unless the length is greater than the maxarray limit.
       
   950 # The filter is applied to each array element.
       
   951 #
       
   952 # Note: This property is currently used by the JDK Reference implementation.
       
   953 # It is not guaranteed to be examined and used by other implementations.
       
   954 #
       
   955 # The built-in filter allows subclasses of allowed classes and
       
   956 # can approximately be represented as the pattern:
       
   957 #
       
   958 #sun.rmi.registry.registryFilter=\
       
   959 #    maxarray=1000000;\
       
   960 #    maxdepth=20;\
       
   961 #    java.lang.String;\
       
   962 #    java.lang.Number;\
       
   963 #    java.lang.reflect.Proxy;\
       
   964 #    java.rmi.Remote;\
       
   965 #    sun.rmi.server.UnicastRef;\
       
   966 #    sun.rmi.server.RMIClientSocketFactory;\
       
   967 #    sun.rmi.server.RMIServerSocketFactory;\
       
   968 #    java.rmi.activation.ActivationID;\
       
   969 #    java.rmi.server.UID
       
   970 #
       
   971 # RMI Distributed Garbage Collector (DGC) Serial Filter
       
   972 #
       
   973 # The filter pattern uses the same format as jdk.serialFilter.
       
   974 # This filter can override the builtin filter if additional types need to be
       
   975 # allowed or rejected from the RMI DGC.
       
   976 #
       
   977 # Note: This property is currently used by the JDK Reference implementation.
       
   978 # It is not guaranteed to be examined and used by other implementations.
       
   979 #
       
   980 # The builtin DGC filter can approximately be represented as the filter pattern:
       
   981 #
       
   982 #sun.rmi.transport.dgcFilter=\
       
   983 #    java.rmi.server.ObjID;\
       
   984 #    java.rmi.server.UID;\
       
   985 #    java.rmi.dgc.VMID;\
       
   986 #    java.rmi.dgc.Lease;\
       
   987 #    maxdepth=5;maxarray=10000