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After Java8 (291), TLS1.1 is disabled and JDBC cannot connect to SqlServer2008 using SSL. How to solve the problem?

WBOYforward: 2023-05-16 23:55:052029browse

After Java8-291, TLS1.1 is disabled, so that JDBC cannot connect to SqlServer2008 using SSL. What should I do? The following is the solution

Modify the java.security file

1. Find the jre java.security file

If it is jre, it is in {JAVA_HOME}/jre/lib/security, such as????

C:\Program Files\Java\jre1. 8.0_301\lib\security

If it is the Eclipse green installation-free portable version
Search for java.security in the installation folder, such as????

xxx \plugins\org.eclipse.justj.openjdk.hotspot.jre.full.win32.x86_64_16.0.1.v20210528-1205\jre\conf\security

If it is the installation version of Eclipse under window
The file is in c:/user folder/.p2/pool/plugins/…, for example????

##C:\Users\admin\.p2\pool\plugins\ org.eclipse.justj.openjdk.hotspot.jre.full.win32.x86_64_16.0.2.v20210721-1149\jre\conf\security

If you search for java.security on the C drive, you may find it More than two, there are also

in the temp folder. 2. Open java.security and search for "jdk.tls.disabledAlgorithms="

jdk.tls.disabledAlgorithms=

Can be found????

# Example:
#   jdk.tls.disabledAlgorithms=MD5, SSLv3, DSA, RSA keySize < 2048, \
#       rsa_pkcs1_sha1, secp224r1
jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA, \
    DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL

3. Delete TLSv1, TLSv1.1,

After deletion, it becomes ????

# Example:
#   jdk.tls.disabledAlgorithms=MD5, SSLv3, DSA, RSA keySize < 2048, \
#       rsa_pkcs1_sha1, secp224r1
jdk.tls.disabledAlgorithms=SSLv3,   RC4, DES, MD5withRSA, \
    DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL

4. Save, OK

The modified sample can be copied directly by jre8

Tested and passed

## This is the "master security properties file".

## An alternate java.security properties file may be specified
# from the command line via the system property

## -Djava.security.properties= 258c40d94d8689854ad79c4076dd5f96

## This properties file appends to the master security properties file.
# If both properties files specify values for the same key, the value
# from the command-line properties file is selected, as it is the last
# one loaded.

## Also, if you specify

## -Djava.security.properties==258c40d94d8689854ad79c4076dd5f96 ( 2 equals),

## then that properties file completely overrides the master security
# properties file.

## To disable the ability to specify an additional properties file from
# the command line, set the key security.overridePropertiesFile
# to false in the master security properties file. It is set to true
# by default.
# In this file, various security properties are set for use by
# java.security classes. This is where users can statically register
# Cryptography Package Providers ("providers" for short). The term
# "provider" refers to a package or set of packages that supply a
# concrete implementation of a subset of the cryptography aspects of
# the Java Security API. A provider may, for example, implement one or
# more digital signature algorithms or message digest algorithms .

## Each provider must implement a subclass of the Provider class.
# To register a provider in this master security properties file,
# specify the provider and priority in the format

## security.provider.751fecf49c9d13ca89ee2cbb9b75d4f6=83011063ba637dec2d17f2793048d981

## This declares a provider, and specifies its preference
# order n. The preference order is the order in which providers are
# searched for requested algorithms (when no specific provider is
# requested). The order is 1-based; 1 is the most preferred, followed
# by 2, and so on.

## f6d82d0cd629b837b773f82e9adb9ab3 must specify the name of the Provider as passed to its super
# class java.security.Provider constructor. This is for providers loaded
# through the ServiceLoader mechanism.

## ba8676586cb33c74c61ba2c0b1d97e34 must specify the subclass of the Provider class whose
# constructor sets the values of various properties that are required
# for the Java Security API to look up the algorithms or other
# facilities implemented by the provider. This is for providers loaded
# through classpath.

## Note: Providers can be dynamically registered instead by calls to
# either the addProvider or insertProviderAt method in the Security
# class.

## List of providers and their preference orders (see above):

#security.provider.1=SUN
security.provider.2=SunRsaSign
security.provider.3=SunEC
security.provider.4=SunJSSE
security.provider.5=SunJCE
security.provider.6=SunJGSS
security.provider.7=SunSASL
security.provider.8=XMLDSig
security.provider.9=SunPCSC
security.provider.10=JdkLDAP
security.provider.11=JdkSASL
security.provider.12=SunMSCAPI
security.provider.13=SunPKCS11

## A list of preferred providers for specific algorithms. These providers will
# be searched for matching algorithms before the list of registered providers.
# Entries containing errors (parsing, etc) will be ignored. Use the
# -Djava.security.debug=jca property to debug these errors.

## The property is a comma-separated list of serviceType.algorithm:provider
# entries. The serviceType (example: "MessageDigest") is optional, and if
# not specified, the algorithm applies to all service types that support it.
# The algorithm is the standard algorithm name or transformation.
# Transformations can be specified in their full standard name
# (ex: AES/CBC/PKCS5Padding), or as partial matches (ex: AES, AES/CBC).
# The provider is the name of the provider. Any provider that does not
# also appear in the registered list will be ignored.

## There is a special serviceType for this property only to group a set of
# algorithms together. The type is "Group" and is followed by an algorithm
# keyword. Groups are to simplify and lessen the entries on the property
# line. Current groups are:
# Group.SHA2 = SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256
# Group.HmacSHA2 = HmacSHA224, HmacSHA256, HmacSHA384, HmacSHA512
# Group.SHA2RSA = SHA224withRSA, SHA256withRSA, SHA384withRSA, SHA512withRSA
# Group.SHA2DSA = SHA224withDSA, SHA256withDSA, SHA384withDSA, SHA512withDSA
# Group.SHA2ECDSA = SHA224withECDSA, SHA256withECDSA, SHA384withECDSA, \
# SHA512withECDSA
# Group.SHA3 = SHA3-224, SHA3-256, SHA3-384, SHA3-512
# Group.HmacSHA3 = HmacSHA3-224, HmacSHA3-256, HmacSHA3-384, HmacSHA3-512

## Example:
# jdk.security.provider.preferred=AES/GCM/NoPadding:SunJCE, \
# MessageDigest.SHA-256:SUN, Group.HmacSHA2:SunJCE

##jdk.security.provider.preferred=

## Sun Provider SecureRandom seed source.

## Select the primary source of seed data for the "NativePRNG", "SHA1PRNG"
# and "DRBG" SecureRandom implementations in the "Sun" provider.
# (Other SecureRandom implementations might also use this property.)

## On Unix-like systems (for example, Linux/MacOS), the
# "NativePRNG", "SHA1PRNG" and "DRBG" implementations obtains seed data from
# special device files such as file:/dev/random.

## On Windows systems, specifying the URLs "file:/dev/random" or
# "file:/dev/urandom" will enable the native Microsoft CryptoAPI seeding
# mechanism for SHA1PRNG and DRBG.

## By default, an attempt is made to use the entropy gathering device
# specified by the "securerandom.source" Security property. If an
# exception occurs while accessing the specified URL:

## NativePRNG:
# a default value of /dev/random will be used. If neither
# are available, the implementation will be disabled.
# "file" is the only currently supported protocol type.

## SHA1PRNG and DRBG:
# the traditional system/thread activity algorithm will be used.

## The entropy gathering device can also be specified with the System
# property "java.security.egd". For example:

## % java -Djava.security.egd=file:/dev/random MainClass

## Specifying this System property will override the
# "securerandom.source" Security property.

## In addition, if "file:/dev/random" or "file:/dev/urandom" is
# specified, the "NativePRNG" implementation will be more preferred than
# DRBG and SHA1PRNG in the Sun provider.

#securerandom.source=file:/dev/random

## A list of known strong SecureRandom implementations.

## To help guide applications in selecting a suitable strong
# java.security.SecureRandom implementation, Java distributions should
# indicate a list of known strong implementations using the property.

## This is a comma-separated list of algorithm and/or algorithm:provider
# entries.

#securerandom.strongAlgorithms=Windows-PRNG:SunMSCAPI,DRBG:SUN

## Sun provider DRBG configuration and default instantiation request.

## NIST SP 800-90Ar1 lists several DRBG mechanisms. Each can be configured
# with a DRBG algorithm name, and can be instantiated with a security strength,
# prediction resistance support, etc. This property defines the configuration
# and the default instantiation request of "DRBG" SecureRandom implementations
# in the SUN provider. (Other DRBG implementations can also use this property.)
# Applications can request different instantiation parameters like security
# strength, capability, personalization string using one of the
# getInstance(...,SecureRandomParameters,...) methods with a
# DrbgParameters.Instantiation argument, but other settings such as the
# mechanism and DRBG algorithm names are not currently configurable by any API.

## Please note that the SUN implementation of DRBG always supports reseeding.

## The value of this property is a comma-separated list of all configurable
# aspects. The aspects can appear in any order but the same aspect can only
# appear at most once. Its BNF-style definition is:

## Value:
# aspect { "," aspect }

## aspect:
# mech_name | algorithm_name | strength | capability | df

## // The DRBG mechanism to use. Default "Hash_DRBG"
# mech_name:
# "Hash_DRBG" | "HMAC_DRBG" | "CTR_DRBG"

## // The DRBG algorithm name. The "SHA-***" names are for Hash_DRBG and
# // HMAC_DRBG, default "SHA-256". The "AES-***" names are for CTR_DRBG,
# // default "AES-128" when using the limited cryptographic or "AES-256"
# // when using the unlimited.
# algorithm_name:
# "SHA-224" | "SHA-512/224" | "SHA-256" |
# "SHA-512/256" | "SHA-384" | "SHA-512" |
# "AES-128" | "AES-192" | "AES-256"

## // Security strength requested. Default "128"
# strength:
# "112" | "128" | "192" | "256"

## // Prediction resistance and reseeding request. Default "none"
# // "pr_and_reseed" - Both prediction resistance and reseeding
# // support requested
# // "reseed_only" - Only reseeding support requested
# // "none" - Neither prediction resistance not reseeding
# // support requested
# pr:
# "pr_and_reseed" | "reseed_only" | "none"

## // Whether a derivation function should be used. only applicable
# // to CTR_DRBG. Default "use_df"
# df:
# "use_df" | "no_df"

## Examples,
# securerandom.drbg.config=Hash_DRBG,SHA-224,112,none
# securerandom.drbg.config=CTR_DRBG,AES-256,192,pr_and_reseed,use_df

## The default value is an empty string, which is equivalent to
# securerandom.drbg.config=Hash_DRBG,SHA-256,128,none

#securerandom.drbg.config=

## Class to instantiate as the javax.security.auth.login.Configuration
# provider.

#login.configuration.provider=sun.security.provider.ConfigFile

## Default login configuration file

##login.config.url.1=file:${user.home}/.java.login.config

## Class to instantiate as the system Policy. This is the name of the class
# that will be used as the Policy object. The system class loader is used to
# locate this class.

#policy.provider=sun.security.provider.PolicyFile

# The default is to have a single system-wide policy file,
# and a policy file in the user's home directory.

#policy.url.1=file:${java.home}/conf/security/java.policy
policy.url.2=file:${user.home}/.java.policy

# Controls whether or not properties are expanded in policy and login
# configuration files. If set to false, properties (${...}) will not
# be expanded in policy and login configuration files. If commented out or
# set to an empty string, the default value is "false" for policy files and
# "true" for login configuration files.

#policy.expandProperties=true

# Controls whether or not an extra policy or login configuration file is
# allowed to be passed on the command line with -Djava.security.policy=somefile
# or -Djava.security.auth.login.config=somefile. If commented out or set to
# an empty string, the default value is "false".

#policy.allowSystemProperty=true

# whether or not we look into the IdentityScope for trusted Identities
# when encountering a 1.1 signed JAR file. If the identity is found
# and is trusted, we grant it AllPermission. Note: the default policy
# provider (sun.security.provider.PolicyFile) does not support this property.

#policy.ignoreIdentityScope=false

## Default keystore type.

#keystore.type=pkcs12

## Controls compatibility mode for JKS and PKCS12 keystore types.

## When set to 'true', both JKS and PKCS12 keystore types support loading
# keystore files in either JKS or PKCS12 format. When set to 'false' the
# JKS keystore type supports loading only JKS keystore files and the PKCS12
# keystore type supports loading only PKCS12 keystore files.

#keystore.type.compat=true

## List of comma-separated packages that start with or equal this string
# will cause a security exception to be thrown when passed to the
# SecurityManager::checkPackageAccess method unless the corresponding
# RuntimePermission("accessClassInPackage." package) has been granted.

#package.access=sun.misc.,\
sun.reflect.

## List of comma-separated packages that start with or equal this string
# will cause a security exception to be thrown when passed to the
# SecurityManager::checkPackageDefinition method unless the corresponding
# RuntimePermission("defineClassInPackage." package) has been granted.

## By default, none of the class loaders supplied with the JDK call
# checkPackageDefinition.

#package.definition=sun.misc.,\
sun.reflect.

## Determines whether this properties file can be appended to
# or overridden on the command line via -Djava.security.properties

#security.overridePropertiesFile=true

## Determines the default key and trust manager factory algorithms for
# the javax.net.ssl package.

#ssl.KeyManagerFactory.algorithm=SunX509
ssl.TrustManagerFactory.algorithm=PKIX

## The Java-level namelookup cache policy for successful lookups:

## any negative value: caching forever
# any positive value: the number of seconds to cache an address for
# zero: do not cache

## default value is forever (FOREVER). For security reasons, this
# caching is made forever when a security manager is set. When a security
# manager is not set, the default behavior in this implementation
# is to cache for 30 seconds.

## NOTE: setting this to anything other than the default value can have
# serious security implications. Do not set it unless
# you are sure you are not exposed to DNS spoofing attack.

##networkaddress.cache.ttl=-1

# The Java-level namelookup cache policy for failed lookups:

## any negative value: cache forever
# any positive value: the number of seconds to cache negative lookup results
# zero: do not cache

## In some Microsoft Windows networking environments that employ
# the WINS name service in addition to DNS, name service lookups
# that fail may take a noticeably long time to return (approx. 5 seconds).
# For this reason the default caching policy is to maintain these
# results for 10 seconds.

#networkaddress.cache.negative.ttl=10

## Properties to configure OCSP for certificate revocation checking

## Enable OCSP

## By default, OCSP is not used for certificate revocation checking.
# This property enables the use of OCSP when set to the value "true".

## NOTE: SocketPermission is required to connect to an OCSP responder.

## Example,
# ocsp.enable=true

## Location of the OCSP responder

## By default, the location of the OCSP responder is determined implicitly
# from the certificate being validated. This property explicitly specifies
# the location of the OCSP responder. The property is used when the
# Authority Information Access extension (defined in RFC 5280) is absent
# from the certificate or when it requires overriding.

## Example,
# ocsp.responderURL=http://ocsp.example.net:80

## Subject name of the OCSP responder's certificate

## By default, the certificate of the OCSP responder is that of the issuer
# of the certificate being validated. This property identifies the certificate
# of the OCSP responder when the default does not apply. Its value is a string
# distinguished name (defined in RFC 2253) which identifies a certificate in
# the set of certificates supplied during cert path validation. In cases where
# the subject name alone is not sufficient to uniquely identify the certificate
# then both the "ocsp.responderCertIssuerName" and
# "ocsp.responderCertSerialNumber" properties must be used instead. When this
# property is set then those two properties are ignored.

## Example,
# ocsp.responderCertSubjectName=CN=OCSP Responder, O=XYZ Corp

## Issuer name of the OCSP responder's certificate

## By default, the certificate of the OCSP responder is that of the issuer
# of the certificate being validated. This property identifies the certificate
# of the OCSP responder when the default does not apply. Its value is a string
# distinguished name (defined in RFC 2253) which identifies a certificate in
# the set of certificates supplied during cert path validation. When this
# property is set then the "ocsp.responderCertSerialNumber" property must also
# be set. When the "ocsp.responderCertSubjectName" property is set then this
# property is ignored.

## Example,
# ocsp.responderCertIssuerName=CN=Enterprise CA, O=XYZ Corp

## Serial number of the OCSP responder's certificate

## By default, the certificate of the OCSP responder is that of the issuer
# of the certificate being validated. This property identifies the certificate
# of the OCSP responder when the default does not apply. Its value is a string
# of hexadecimal digits (colon or space separators may be present) which
# identifies a certificate in the set of certificates supplied during cert path
# validation. When this property is set then the "ocsp.responderCertIssuerName"
# property must also be set. When the "ocsp.responderCertSubjectName" property
# is set then this property is ignored.

## Example,
# ocsp.responderCertSerialNumber=2A:FF:00

## Policy for failed Kerberos KDC lookups:

## When a KDC is unavailable (network error, service failure, etc), it is
# put inside a blacklist and accessed less often for future requests. The
# value (case-insensitive) for this policy can be:

## tryLast
# KDCs in the blacklist are always tried after those not on the list.

## tryLess[:max_retries,timeout]
# KDCs in the blacklist are still tried by their order in the configuration,
# but with smaller max_retries and timeout values. max_retries and timeout
# are optional numerical parameters (default 1 and 5000, which means once
# and 5 seconds). Please notes that if any of the values defined here is
# more than what is defined in krb5.conf, it will be ignored.

## Whenever a KDC is detected as available, it is removed from the blacklist.
# The blacklist is reset when krb5.conf is reloaded. You can add
# refreshKrb5Config=true to a JAAS configuration file so that krb5.conf is
# reloaded whenever a JAAS authentication is attempted.

## Example,
# krb5.kdc.bad.policy = tryLast
# krb5.kdc.bad.policy = tryLess:2,2000

#krb5.kdc.bad.policy = tryLast

## Kerberos cross-realm referrals (RFC 6806)

## OpenJDK's Kerberos client supports cross-realm referrals as defined in
# RFC 6806. This allows to setup more dynamic environments in which clients
# do not need to know in advance how to reach the realm of a target principal
# (either a user or service).

## When a client issues an AS or a TGS request, the "canonicalize" option
# is set to announce support of this feature. A KDC server may fulfill the
# request or reply referring the client to a different one. If referred,
# the client will issue a new request and the cycle repeats.

## In addition to referrals, the "canonicalize" option allows the KDC server
# to change the client name in response to an AS request. For security reasons,
# RFC 6806 (section 11) FAST scheme is enforced.

## Disable Kerberos cross-realm referrals. Value may be overwritten with a
# System property (-Dsun.security.krb5.disableReferrals).
sun.security.krb5.disableReferrals=false

# Maximum number of AS or TGS referrals to avoid infinite loops. Value may
# be overwritten with a System property (-Dsun.security.krb5.maxReferrals).
sun.security.krb5.maxReferrals=5

## This property contains a list of disabled EC Named Curves that can be included
# in the jdk.[tls|certpath|jar].disabledAlgorithms properties. To include this
# list in any of the disabledAlgorithms properties, add the property name as
# an entry.
#jdk.disabled.namedCurves=

## Algorithm restrictions for certification path (CertPath) processing

## In some environments, certain algorithms or key lengths may be undesirable
# for certification path building and validation. For example, "MD2" is
# generally no longer considered to be a secure hash algorithm. This section
# describes the mechanism for disabling algorithms based on algorithm name
# and/or key length. This includes algorithms used in certificates, as well
# as revocation information such as CRLs and signed OCSP Responses.
# The syntax of the disabled algorithm string is described as follows:
# DisabledAlgorithms:
# " DisabledAlgorithm { , DisabledAlgorithm } "

## DisabledAlgorithm:
# AlgorithmName [Constraint] { '&' Constraint } | IncludeProperty

## AlgorithmName:
# (see below)

## Constraint:
# KeySizeConstraint | CAConstraint | DenyAfterConstraint |
# UsageConstraint

## KeySizeConstraint:
# keySize Operator KeyLength

## Operator:
# b1c9ed4f687c0238205d15575a6578ff= | >

## KeyLength:
# Integer value of the algorithm's key length in bits

## CAConstraint:
# jdkCA

## DenyAfterConstraint:
# denyAfter YYYY-MM-DD

## UsageConstraint:
# usage [TLSServer] [TLSClient] [SignedJAR]

## IncludeProperty:
# include a156e5fabe8bc64803b269b34a370726

## The "AlgorithmName" is the standard algorithm name of the disabled
# algorithm. See the Java Security Standard Algorithm Names Specification
# for information about Standard Algorithm Names. Matching is
# performed using a case-insensitive sub-element matching rule. (For
# example, in "SHA1withECDSA" the sub-elements are "SHA1" for hashing and
# "ECDSA" for signatures.) If the assertion "AlgorithmName" is a
# sub-element of the certificate algorithm name, the algorithm will be
# rejected during certification path building and validation. For example,
# the assertion algorithm name "DSA" will disable all certificate algorithms
# that rely on DSA, such as NONEwithDSA, SHA1withDSA. However, the assertion
# will not disable algorithms related to "ECDSA".

## The "IncludeProperty" allows a implementation-defined security property that
# can be included in the disabledAlgorithms properties. These properties are
# to help manage common actions easier across multiple disabledAlgorithm
# properties.
# There is one defined security property: jdk.disabled.NamedCurves
# See the property for more specific details.

A "Constraint" defines restrictions on the keys and/or certificates for
# a specified AlgorithmName:

## KeySizeConstraint:
# keySize Operator KeyLength
# The constraint requires a key of a valid size range if the
# "AlgorithmName" is of a key algorithm. The "KeyLength" indicates
# the key size specified in number of bits. For example,
# "RSA keySize 06de230cd9220b16ffb81f5e577ea61a 2048" indicates that any RSA key
# with key size less than 1024 or greater than 2048 should be disabled.
# This constraint is only used on algorithms that have a key size.

## CAConstraint:
# jdkCA
# This constraint prohibits the specified algorithm only if the
# algorithm is used in a certificate chain that terminates at a marked
# trust anchor in the lib/security/cacerts keystore. If the jdkCA
# constraint is not set, then all chains using the specified algorithm
# are restricted. jdkCA may only be used once in a DisabledAlgorithm
# expression.
# Example: To apply this constraint to SHA-1 certificates, include
# the following: "SHA1 jdkCA"

## DenyAfterConstraint:
# denyAfter YYYY-MM-DD#### This constraint prohibits a certificate with the specified algorithm
# from being used after the date regardless of the certificate's
# validity. JAR files that are signed and timestamped before the
# constraint date with certificates containing the disabled algorithm
# will not be restricted. The date is processed in the UTC timezone.
# This constraint can only be used once in a DisabledAlgorithm
# expression.
# Example: To deny usage of RSA 2048 bit certificates after Feb 3 2020,
# use the following: "RSA keySize == 2048 & denyAfter 2020-02-03"

## UsageConstraint:
# usage [TLSServer] [TLSClient] [SignedJAR]
# This constraint prohibits the specified algorithm for
# a specified usage. This should be used when disabling an algorithm
# for all usages is not practical. 'TLSServer' restricts the algorithm
# in TLS server certificate chains when server authentication is
# performed. 'TLSClient' restricts the algorithm in TLS client
# certificate chains when client authentication is performed.
# 'SignedJAR' constrains use of certificates in signed jar files.
# The usage type follows the keyword and more than one usage type can
# be specified with a whitespace delimiter.
# Example: "SHA1 usage TLSServer TLSClient"

## When an algorithm must satisfy more than one constraint, it must be
# delimited by an ampersand '&'. For example, to restrict certificates in a
# chain that terminate at a distribution provided trust anchor and contain
# RSA keys that are less than or equal to 1024 bits, add the following
# constraint: "RSA keySize <= 1024 & jdkCA".

## All DisabledAlgorithms expressions are processed in the order defined in the
# property. This requires lower keysize constraints to be specified
# before larger keysize constraints of the same algorithm. For example:
# "RSA keySize < 1024 & jdkCA, RSA keySize < 2048".

## Note: The algorithm restrictions do not apply to trust anchors or
# self-signed certificates.

## Note: This property is currently used by Oracle's PKIX implementation. It
# is not guaranteed to be examined and used by other implementations.

## Example:
# jdk.certpath.disabledAlgorithms=MD2, DSA, RSA keySize < 2048

##jdk.certpath.disabledAlgorithms=MD2, MD5, SHA1 jdkCA & usage TLSServer, \
RSA keySize < 1024, DSA keySize < 1024, EC keySize < 224

## Legacy algorithms for certification path (CertPath) processing and
# signed JAR files.

## In some environments, a certain algorithm or key length may be undesirable
# but is not yet disabled.

## Tools such as keytool and jarsigner may emit warnings when these legacy
# algorithms are used. See the man pages for those tools for more information.

## The syntax is the same as the "jdk.certpath.disabledAlgorithms" and
# "jdk.jar.disabledAlgorithms" security properties.

## Note: This property is currently used by the JDK Reference
# implementation. It is not guaranteed to be examined and used by other
# implementations.

jdk.security.legacyAlgorithms=SHA1, \
RSA keySize < 2048, DSA keySize < 2048

## Algorithm restrictions for signed JAR files

## In some environments, certain algorithms or key lengths may be undesirable
# for signed JAR validation. For example, "MD2" is generally no longer
# considered to be a secure hash algorithm. This section describes the
# mechanism for disabling algorithms based on algorithm name and/or key length.
# JARs signed with any of the disabled algorithms or key sizes will be treated
# as unsigned.

## The syntax of the disabled algorithm string is described as follows:
# DisabledAlgorithms:
# " DisabledAlgorithm { , DisabledAlgorithm } "

## DisabledAlgorithm:
# AlgorithmName [Constraint] { '&' Constraint }

## AlgorithmName:
# (see below)

## Constraint:
# KeySizeConstraint | DenyAfterConstraint

## KeySizeConstraint:
# keySize Operator KeyLength

## DenyAfterConstraint:
# denyAfter YYYY-MM-DD

## Operator:
# b1c9ed4f687c0238205d15575a6578ff= | >

## KeyLength:
# Integer value of the algorithm's key length in bits

## Note: This property is currently used by the JDK Reference
# implementation. It is not guaranteed to be examined and used by other
# implementations.

## See "jdk.certpath.disabledAlgorithms" for syntax descriptions.

#jdk.jar.disabledAlgorithms=MD2, MD5, RSA keySize efa9b2a3b2e30f7457b51e8215353b62/conf/security/policy/ which can be customized.
# Please see the 63b3ee7e72479f6360d4c7e4b3af780a/conf/security/policy/README.txt file or consult
# the Java Security Guide/JCA documentation for more information.

## YOU ARE ADVISED TO CONSULT YOUR EXPORT/IMPORT CONTROL COUNSEL OR ATTORNEY
# TO DETERMINE THE EXACT REQUIREMENTS.

## [1] Please note that the JCE for Java SE, including the JCE framework,
# cryptographic policy files, and standard JCE providers provided with
# the Java SE, have been reviewed and approved for export as mass market
# encryption item by the US Bureau of Industry and Security.

## Note: This property is currently used by the JDK Reference implementation.
# It is not guaranteed to be examined and used by other implementations.

#crypto.policy=unlimited

## The policy for the XML Signature secure validation mode. The mode is
# enabled by setting the property "org.jcp.xml.dsig.secureValidation" to
# true with the javax.xml.crypto.XMLCryptoContext.setProperty() method,
# or by running the code with a SecurityManager.

## Policy:
# Constraint {"," Constraint }
# Constraint:
# AlgConstraint | MaxTransformsConstraint | MaxReferencesConstraint |
# ReferenceUriSchemeConstraint | KeySizeConstraint | OtherConstraint
# AlgConstraint
# "disallowAlg" Uri
# MaxTransformsConstraint:
# "maxTransforms" Integer
# MaxReferencesConstraint:
# "maxReferences" Integer
# ReferenceUriSchemeConstraint:
# "disallowReferenceUriSchemes" String { String }
# KeySizeConstraint:
# "minKeySize" KeyAlg Integer
# OtherConstraint:
# "noDuplicateIds" | "noRetrievalMethodLoops"

## For AlgConstraint, Uri is the algorithm URI String that is not allowed.
# See the XML Signature Recommendation for more information on algorithm
# URI Identifiers. For KeySizeConstraint, KeyAlg is the standard algorithm
# name of the key type (ex: "RSA"). If the MaxTransformsConstraint,
# MaxReferencesConstraint or KeySizeConstraint (for the same key type) is
# specified more than once, only the last entry is enforced.

## Note: This property is currently used by the JDK Reference implementation. It
# is not guaranteed to be examined and used by other implementations.

#jdk.xml.dsig.secureValidationPolicy=\
disallowAlg http://www.w3.org/TR/1999/REC-xslt-19991116,\
disallowAlg http://www.w3.org/2001/04/xmldsig-more#rsa-md5,\
disallowAlg http://www.w3.org/2001/04/xmldsig-more#hmac-md5,\
disallowAlg http://www.w3.org/2001/04/xmldsig-more#md5,\
maxTransforms 5,\
maxReferences 30,\
disallowReferenceUriSchemes file http https,\
minKeySize RSA 1024,\
minKeySize DSA 1024,\
minKeySize EC 224,\
noDuplicateIds,\
noRetrievalMethodLoops

## Serialization system-wide filter

## A filter, if configured, is used by java.io.ObjectInputStream during
# deserialization to check the contents of the stream.
# A filter is configured as a sequence of patterns, each pattern is either
# matched against the name of a class in the stream or defines a limit.
# Patterns are separated by ";" (semicolon).
# Whitespace is significant and is considered part of the pattern.

## If the system property jdk.serialFilter is also specified, it supersedes
# the security property value defined here.

## If a pattern includes a "=", it sets a limit.
# If a limit appears more than once the last value is used.
# Limits are checked before classes regardless of the order in the
# sequence of patterns.
# If any of the limits are exceeded, the filter status is REJECTED.

## maxdepth=value - the maximum depth of a graph
# maxrefs=value - the maximum number of internal references
# maxbytes=value - the maximum number of bytes in the input stream
# maxarray=value - the maximum array length allowed

## Other patterns, from left to right, match the class or package name as
# returned from Class.getName.
# If the class is an array type, the class or package to be matched is the
# element type.
# Arrays of any number of dimensions are treated the same as the element type.
# For example, a pattern of "!example.Foo", rejects creation of any instance or
# array of example.Foo.

## If the pattern starts with "!", the status is REJECTED if the remaining
# pattern is matched; otherwise the status is ALLOWED if the pattern matches.
# If the pattern contains "/", the non-empty prefix up to the "/" is the
# module name;
# if the module name matches the module name of the class then
# the remaining pattern is matched with the class name.
# If there is no "/", the module name is not compared.
# If the pattern ends with ".**" it matches any class in the package and all
# subpackages.
# If the pattern ends with ".*" it matches any class in the package.
# If the pattern ends with "*", it matches any class with the pattern as a
# prefix.
# If the pattern is equal to the class name, it matches.
# Otherwise, the status is UNDECIDED.

##jdk.serialFilter=pattern;pattern

## RMI Registry Serial Filter

## The filter pattern uses the same format as jdk.serialFilter.
# This filter can override the builtin filter if additional types need to be
# allowed or rejected from the RMI Registry or to decrease limits but not
# to increase limits.
# If the limits (maxdepth, maxrefs, or maxbytes) are exceeded, the object is rejected.

## Each non-array type is allowed or rejected if it matches one of the patterns,
# evaluated from left to right, and is otherwise allowed. Arrays of any
# component type, including subarrays and arrays of primitives, are allowed.

## Array construction of any component type, including subarrays and arrays of
# primitives, are allowed unless the length is greater than the maxarray limit.
# The filter is applied to each array element.

## Note: This property is currently used by the JDK Reference implementation.
# It is not guaranteed to be examined and used by other implementations.

## The built-in filter allows subclasses of allowed classes and
# can approximately be represented as the pattern:

##sun.rmi.registry.registryFilter=\
# maxarray=1000000;\
# maxdepth=20;\
# java.lang.String;\
# java.lang.Number;\
# java.lang.reflect.Proxy;\
# java.rmi.Remote;\
# sun.rmi.server.UnicastRef;\
# sun.rmi.server.RMIClientSocketFactory;\
# sun.rmi.server.RMIServerSocketFactory;\
# java.rmi.activation.ActivationID;\
# java.rmi.server.UID

## RMI Distributed Garbage Collector (DGC) Serial Filter

## The filter pattern uses the same format as jdk.serialFilter.
# This filter can override the builtin filter if additional types need to be
# allowed or rejected from the RMI DGC.

## Note: This property is currently used by the JDK Reference implementation.
# It is not guaranteed to be examined and used by other implementations.

## The builtin DGC filter can approximately be represented as the filter pattern:

##sun.rmi.transport.dgcFilter=\
# java.rmi.server.ObjID;\
# java.rmi.server.UID;\
# java.rmi.dgc.VMID;\
# java.rmi.dgc.Lease;\
# maxdepth=5;maxarray=10000

## JCEKS Encrypted Key Serial Filter

## This filter, if configured, is used by the JCEKS KeyStore during the
# deserialization of the encrypted Key object stored inside a key entry.
# If not configured or the filter result is UNDECIDED (i.e. none of the patterns
# matches), the filter configured by jdk.serialFilter will be consulted.

## If the system property jceks.key.serialFilter is also specified, it supersedes
# the security property value defined here.

## The filter pattern uses the same format as jdk.serialFilter. The default
# pattern allows java.lang.Enum, java.security.KeyRep, java.security.KeyRep$Type,
# and javax.crypto.spec.SecretKeySpec and rejects all the others.
jceks.key.serialFilter = java.base/java.lang.Enum;java.base/java.security.KeyRep;\
java.base/java.security.KeyRep$Type;java.base/javax.crypto.spec.SecretKeySpec;!*

# The iteration count used for password-based encryption (PBE) in JCEKS
# keystores. Values in the range 10000 to 5000000 are considered valid.
# If the value is out of this range, or is not a number, or is unspecified;
# a default of 200000 is used.

## If the system property jdk.jceks.iterationCount is also specified, it
# supersedes the security property value defined here.

##jdk.jceks.iterationCount = 200000

## PKCS12 KeyStore properties

## The following properties, if configured, are used by the PKCS12 KeyStore
# implementation during the creation of a new keystore. Several of the
# properties may also be used when modifying an existing keystore. The
# properties can be overridden by a KeyStore API that specifies its own
# algorithms and parameters.

## If an existing PKCS12 keystore is loaded and then stored, the algorithm and
# parameter used to generate the existing Mac will be reused. If the existing
# keystore does not have a Mac, no Mac will be created while storing. If there
# is at least one certificate in the existing keystore, the algorithm and
# parameters used to encrypt the last certificate in the existing keystore will
# be reused to encrypt all certificates while storing. If the last certificate
# in the existing keystore is not encrypted, all certificates will be stored
# unencrypted. If there is no certificate in the existing keystore, any newly
# added certificate will be encrypted (or stored unencrypted if algorithm
# value is "NONE") using the "keystore.pkcs12.certProtectionAlgorithm" and
# "keystore.pkcs12.certPbeIterationCount" values defined here. Existing private
# and secret key(s) are not changed. Newly set private and secret key(s) will
# be encrypted using the "keystore.pkcs12.keyProtectionAlgorithm" and
# "keystore.pkcs12.keyPbeIterationCount" values defined here.

## In order to apply new algorithms and parameters to all entries in an
# existing keystore, one can create a new keystore and add entries in the
# existing keystore into the new keystore. This can be achieved by calling the
# "keytool -importkeystore" command.

## If a system property of the same name is also specified, it supersedes the
# security property value defined here.

## If the property is set to an illegal value,
# an iteration count that is not a positive integer, or an unknown algorithm
# name, an exception will be thrown when the property is used.
# If the property is not set or empty, a default value will be used.

## Note: These properties are currently used by the JDK Reference implementation.
# They are not guaranteed to be examined and used by other implementations.

# The algorithm used to encrypt a certificate. This can be any non-Hmac PBE
# algorithm defined in the Cipher section of the Java Security Standard
# Algorithm Names Specification. When set to "NONE", the certificate
# is not encrypted. The default value is "PBEWithHmacSHA256AndAES_256".
#keystore.pkcs12.certProtectionAlgorithm = PBEWithHmacSHA256AndAES_256

# The iteration count used by the PBE algorithm when encrypting a certificate.
# This value must be a positive integer. The default value is 10000.
#keystore.pkcs12.certPbeIterationCount = 10000

# The algorithm used to encrypt a private key or secret key. This can be
# any non-Hmac PBE algorithm defined in the Cipher section of the Java
# Security Standard Algorithm Names Specification. The value must not be "NONE".
# The default value is "PBEWithHmacSHA256AndAES_256".
#keystore.pkcs12.keyProtectionAlgorithm = PBEWithHmacSHA256AndAES_256

# The iteration count used by the PBE algorithm when encrypting a private key
# or a secret key. This value must be a positive integer. The default value
# is 10000.
#keystore.pkcs12.keyPbeIterationCount = 10000

# The algorithm used to calculate the optional MacData at the end of a PKCS12
# file. This can be any HmacPBE algorithm defined in the Mac section of the
# Java Security Standard Algorithm Names Specification. When set to "NONE",
# no Mac is generated. The default value is "HmacPBESHA256".
#keystore.pkcs12.macAlgorithm = HmacPBESHA256

# The iteration count used by the MacData algorithm. This value must be a
# positive integer. The default value is 10000.
#keystore.pkcs12.macIterationCount = 10000

## Enhanced exception message information

## By default, exception messages should not include potentially sensitive
# information such as file names, host names, or port numbers. This property
# accepts one or more comma separated values, each of which represents a
# category of enhanced exception message information to enable. Values are
# case-insensitive. Leading and trailing whitespaces, surrounding each value,
# are ignored. Unknown values are ignored.

## NOTE: Use caution before setting this property. Setting this property
# exposes sensitive information in Exceptions, which could, for example,
# propagate to untrusted code or be emitted in stack traces that are
# inadvertently disclosed and made accessible over a public network.

## The categories are:

## hostInfo - IOExceptions thrown by java.net.Socket and the socket types in the
# java.nio.channels package will contain enhanced exception
# message information

## jar - enables more detailed information in the IOExceptions thrown
# by classes in the java.util.jar package

## The property setting in this file can be overridden by a system property of
# the same name, with the same syntax and possible values.

##jdk.includeInExceptions=hostInfo,jar

## Disabled mechanisms for the Simple Authentication and Security Layer (SASL)

## Disabled mechanisms will not be negotiated by both SASL clients and servers.
# These mechanisms will be ignored if they are specified in the "mechanisms"
# argument of "Sasl.createSaslClient" or the "mechanism" argument of
# "Sasl.createSaslServer".

## The value of this property is a comma-separated list of SASL mechanisms.
# The mechanisms are case-sensitive. Whitespaces around the commas are ignored.

## Note: This property is currently used by the JDK Reference implementation.
# It is not guaranteed to be examined and used by other implementations.

## Example:
# jdk.sasl.disabledMechanisms=PLAIN, CRAM-MD5, DIGEST-MD5
jdk.sasl.disabledMechanisms=

## Policies for distrusting Certificate Authorities (CAs).

## This is a comma separated value of one or more case-sensitive strings, each
# of which represents a policy for determining if a CA should be distrusted.
# The supported values are:

## SYMANTEC_TLS : Distrust TLS Server certificates anchored by a Symantec
# root CA and issued after April 16, 2019 unless issued by one of the
# following subordinate CAs which have a later distrust date:
# 1. Apple IST CA 2 - G1, SHA-256 fingerprint:
# AC2B922ECFD5E01711772FEA8ED372DE9D1E2245FCE3F57A9CDBEC77296A424B
# Distrust after December 31, 2019.
# 2. Apple IST CA 8 - G1, SHA-256 fingerprint:
# A4FE7C7F15155F3F0AEF7AAA83CF6E06DEB97CA3F909DF920AC1490882D488ED
# Distrust after December 31, 2019.

## Leading and trailing whitespace surrounding each value are ignored.
# Unknown values are ignored. If the property is commented out or set to the
# empty String, no policies are enforced.

## Note: This property is currently used by the JDK Reference implementation.
# It is not guaranteed to be supported by other SE implementations. Also, this
# property does not override other security properties which can restrict
# certificates such as jdk.tls.disabledAlgorithms or
# jdk.certpath.disabledAlgorithms; those restrictions are still enforced even
# if this property is not enabled.

#jdk.security.caDistrustPolicies=SYMANTEC_TLS

## FilePermission path canonicalization

## This security property dictates how the path argument is processed and stored
# while constructing a FilePermission object. If the value is set to true, the
# path argument is canonicalized and FilePermission methods (such as implies,
# equals, and hashCode) are implemented based on this canonicalized result.
# Otherwise, the path argument is not canonicalized and FilePermission methods are
# implemented based on the original input. See the implementation note of the
# FilePermission class for more details.

## If a system property of the same name is also specified, it supersedes the
# security property value defined here.

## The default value for this property is false.

#jdk.io.permissionsUseCanonicalPath=false

## Policies for the proxy_impersonator Kerberos ccache configuration entry

## The proxy_impersonator ccache configuration entry indicates that the ccache
# is a synthetic delegated credential for use with S4U2Proxy by an intermediate
# server. The ccache file should also contain the TGT of this server and
# an evidence ticket from the default principal of the ccache to this server.

## This security property determines how Java uses this configuration entry.
# There are 3 possible values:

## no-impersonate - Ignore this configuration entry, and always act as
# the owner of the TGT (if it exists).

## try-impersonate - Try impersonation when this configuration entry exists.
# If no matching TGT or evidence ticket is found,
# fallback to no-impersonate.

## always-impersonate - Always impersonate when this configuration entry exists.
# If no matching TGT or evidence ticket is found,
# no initial credential is read from the ccache.

## The default value is "always-impersonate".

## If a system property of the same name is also specified, it supersedes the
# security property value defined here.

##jdk.security.krb5.default.initiate.credential=always-impersonate

## Trust Anchor Certificates - CA Basic Constraint check

## X.509 v3 certificates used as Trust Anchors (to validate signed code or TLS
# connections) must have the cA Basic Constraint field set to 'true'. Also, if
# they include a Key Usage extension, the keyCertSign bit must be set. These
# checks, enabled by default, can be disabled for backward-compatibility
# purposes with the jdk.security.allowNonCaAnchor System and Security
# properties. In the case that both properties are simultaneously set, the
# System value prevails. The default value of the property is "false".

##jdk.security.allowNonCaAnchor=true

## The default Character set name (java.nio.charset.Charset.forName())
# for converting TLS ALPN values between byte arrays and Strings.
# Prior versions of the JDK may use UTF-8 as the default charset. If
# you experience interoperability issues, setting this property to UTF-8
# may help.

## jdk.tls.alpnCharset=UTF-8
jdk.tls.alpnCharset=ISO_8859_1

## JNDI Object Factories Filter

## This filter is used by the JNDI runtime to control the set of object factory classes
# which will be allowed to instantiate objects from object references returned by
# naming/directory systems. The factory class named by the reference instance will be
# matched against this filter. The filter property supports pattern-based filter syntax
# with the same format as jdk.serialFilter.

## Each pattern is matched against the factory class name to allow or disallow it's
# instantiation. The access to a factory class is allowed unless the filter returns
# REJECTED.

## Note: This property is currently used by the JDK Reference implementation.
# It is not guaranteed to be examined and used by other implementations.

## If the system property jdk.jndi.object.factoriesFilter is also specified, it supersedes
# the security property value defined here. The default value of the property is "*".

## The default pattern value allows any object factory class specified by the reference
# instance to recreate the referenced object.
#jdk.jndi.object.factoriesFilter=*

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After Java8 (291), TLS1.1 is disabled and JDBC cannot connect to SqlServer2008 using SSL. How to solve the problem?

After Java8-291, TLS1.1 is disabled, so that JDBC cannot connect to SqlServer2008 using SSL. What should I do? The following is the solution

Modify the java.security file

1. Find the jre java.security file

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