blocks|key|2091179|text|由于你没有解释你的问题在这里是什么，一些猜测。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2091180|如果使用互联网搜索引擎，您可能会找到这个页面http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html。|ordered-list-item|offset|length|2091181|您可能已经下载了这个文件jce_policy-8.zip。|style|CODE|2091182|也许您已经解压缩并查看了目录UnlimitedJCEPolicyJDK8/。|2091183|也许README.txt文件会引起你的兴趣|2091184|如果所有这些步骤都是真的，你就会发现|2091185|3)++Install+the+unlimited+strength+policy+JAR+files.

In+case+you+later+decide+to+revert+to+the+original+"strong"+but
limited+policy+versions,+first+make+a+copy+of+the+original+JCE
policy+files+(US_export_policy.jar+and+local_policy.jar).+Then
replace+the+strong+policy+files+with+the+unlimited+strength
versions+extracted+in+the+previous+step.

The+standard+place+for+JCE+jurisdiction+policy+JAR+files+is:

++++<java-home>/lib/security+++++++++++[Unix]
++++<java-home>\lib\security+++++++++++[Windows]|code-block|syntax|javascript|2091186|您可以假设OSX上的位置与列出的系统相同。|2091187|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html^0|0|M|2A|0|0|C|G|0|E|N|0|2|A|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|16|8|@]|9|@$E|17|F|18|1|19]]|A|$]]|$1|G|3|H|5|D|7|1A|8|@$E|1B|F|1C|I|J]]|9|@]|A|$]]|$1|K|3|L|5|D|7|1D|8|@$E|1E|F|1F|I|J]]|9|@]|A|$]]|$1|M|3|N|5|D|7|1G|8|@$E|1H|F|1I|I|J]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Q|3|R|5|S|7|1K|8|@]|9|@]|A|$T|U]]|$1|V|3|W|5|6|7|1L|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|Y|$Z|$5|10|11|12|A|$13|14]]]]

As you did not explain what is your problem here some guesses.

<ol>
<li>Using an internet search engine you probably would have found this page <a href="http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html" rel="noreferrer">http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html</a></li>
<li>you might have downloaded this file <code>jce_policy-8.zip</code></li>
<li>maybe you would have unzipped it and had a look into directory <code>UnlimitedJCEPolicyJDK8/</code></li>
<li>maybe the file <code>README.txt</code> would have attracted your interest</li>
</ol>

If all of those steps would have been true, then you would have found

<pre><code>3) Install the unlimited strength policy JAR files.

In case you later decide to revert to the original "strong" but
limited policy versions, first make a copy of the original JCE
policy files (US_export_policy.jar and local_policy.jar). Then
replace the strong policy files with the unlimited strength
versions extracted in the previous step.

The standard place for JCE jurisdiction policy JAR files is:

 &lt;java-home&gt;/lib/security [Unix]
 &lt;java-home&gt;\lib\security [Windows]
</code></pre>

You can assume that the location on OSX is the same as for the listed systems.

blocks|key|1074089|text|注意:默认情况下，Java版本8u161无限加密是启用的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1074090|适用于MacOS用户|1074091|如果您是MacOS用户，如果您的java版本为8，请将从policy-8.zip提取的jars放在path下面(将jars放在下面)|offset|length|1074092|/Library/Java/JavaVirtualMachines/**<+jdk_version_of_your_pc+>**/Contents/Home/jre/lib/security|code-block|syntax|javascript|1074093|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html^0|0|0|S|C|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@$F|X|G|Y|1|Z]]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Note: As of Java JDK version 8u161 unlimited cryptography is enabled by default
<h1>FOR MacOS user</h1>
If you are MacOS user, put the jars extracted from <a href="http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html" rel="noreferrer">jce_policy-8.zip</a> if your java version is 8.* use below path (to put jars under it)
<pre><code>/Library/Java/JavaVirtualMachines/**&lt; jdk_version_of_your_pc &gt;**/Contents/Home/jre/lib/security
</code></pre>

blocks|key|1074104|text|对于较晚版本的macOS+(例如Sierra)，Oracle安装在两个位置，这取决于您是否安装了JRE或JDK。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1074105|JRE：/Library/Internet+Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/|unordered-list-item|offset|length|style|CODE|1074106|JDK：/Library/Java/JavaVirtualMachines/jdk1.x.x_xxx.jdk/Contents/Home/+|1074107|如果安装JDK，它还将在上面列出的JRE位置安装JRE。|1074108|1074109|​|1074110|JRE允许您双击从Finder打开jars并在浏览器中运行Java。JRE不附带java二进制文件，所以如果您想运行任何典型的Java命令，就必须安装JDK。更多报道来自java.xml。|1074111|也就是说，当安装无限强度的JCE文件时，请将它们安装在上面列出的两个目录中，以获得一致的行为。|1074112|entityMap|0|LINK|mutability|MUTABLE|url|https://java.com/en/download/faq/yosemite_java.xml^0|0|4|1T|0|4|1T|1|1|0|0|14|4|2D|8|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|12|8|@$E|13|F|14|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|15|8|@$E|16|F|17|G|H]]|9|@]|A|$]]|$1|K|3|L|5|D|7|18|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1A|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1B|8|@$E|1C|F|1D|G|H]]|9|@$E|1E|F|1F|1|1G]]|A|$]]|$1|R|3|S|5|6|7|1H|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|U|$V|$5|W|X|Y|A|$Z|10]]]]

For later versions of macOS (e.g., Sierra), Oracle Java is installed in two locations depending on if you install the JRE or JDK.

<ul>
<li>JRE: <code>/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/</code></li>
<li>JDK: <code>/Library/Java/JavaVirtualMachines/jdk1.x.x_xxx.jdk/Contents/Home/</code>

<ul>
<li>If you install the JDK, it will also install the JRE at the JRE location listed above.</li>
</ul></li>
</ul>

The JRE allows you to double-click to open jars from the Finder and run Java in the browser. The JRE does not come with the <code>java</code> binary, so if you want to run any of the typical Java commands, you must install the JDK. More at <a href="https://java.com/en/download/faq/yosemite_java.xml" rel="noreferrer">https://java.com/en/download/faq/yosemite_java.xml</a>.

All this to say, when installing then unlimited strength JCE files, install them in both directories listed above to get consistent behavior.

blocks|key|1337886|text|Java+8更新161|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1337887|正如在另一个答案和甲骨文的Java+8发布说明更新161中所指出的，默认情况下，无限加密是启用的，因为Update161，如果使用此版本或更高版本的新安装，您不应该做任何事情。|offset|length|1337888|Java+8更新151|1337889|在Java+8+Update+151中，Oracle在Java+8中包含了与Java+9已经提供的相同的JCE机制。|1337890|crypto.policy=unlimited|code-block|syntax|javascript|1337891|在$JAVA_HOME/jre/lib/security/java.security中。|style|CODE|1337892|如果之前添加了旧策略JAR，那么删除旧策略JAR可能是个好主意，正如甲骨文在发布说明中所述|1337893|由于旧的JCE管辖权文件留在/lib/security中，它们可能不符合最新的安全JAR签名标准，这些标准在6u131、7u121、8u111和以后的更新中被刷新。|blockquote|1337894|旧版本|1337895|建议通过Homebrew安装JCE文件的答案将不再起作用，因为在Java8Update+151发布后，木桶被从Homebrew存储库中删除。如果使用较早版本的Java+8，则必须按照另一个答案中的描述手动放置JCE+JAR。|1337896|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/48604661|1|http://www.oracle.com/technetwork/java/javase/8u161-relnotes-4021379.html#JDK-8170157|2|http://www.oracle.com/technetwork/java/javase/8u151-relnotes-3850493.html|3|https://stackoverflow.com/a/41002560/1225882^0|0|3|5|0|D|F|1|0|0|0|0|1|15|0|12|4|2|0|0|0|2J|5|3|0^^$0|@$1|2|3|4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1G|8|@]|9|@$D|1H|E|1I|1|1J]|$D|1K|E|1L|1|1M]]|A|$]]|$1|F|3|G|5|6|7|1N|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1O|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|1P|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|1Q|8|@$D|1R|E|1S|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1T|8|@]|9|@$D|1U|E|1V|1|1W]]|A|$]]|$1|U|3|V|5|W|7|1X|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1Z|8|@]|9|@$D|20|E|21|1|22]]|A|$]]|$1|11|3|-4|5|6|7|23|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]|19|$5|14|15|16|A|$17|1A]]|1B|$5|14|15|16|A|$17|1C]]|1D|$5|14|15|16|A|$17|1E]]]]

<h1>Java 8 Update 161</h1>

As pointed out in <a href="https://stackoverflow.com/a/48604661">another answer</a> and in Oracle's <a href="http://www.oracle.com/technetwork/java/javase/8u161-relnotes-4021379.html#JDK-8170157" rel="noreferrer">release notes for Java 8 Update 161</a>, unlimited cryptography is enabled by default since Update 161 and you shouldn't have to do anything if using a fresh installation of this version or higher.

<h1>Java 8 Update 151</h1>

With Java 8 Update 151, Oracle included the same JCE mechanism into Java 8 that they already provided with Java 9. To enable JCE in Java 8 Update 151 or higher, just set the property 

<pre><code>crypto.policy=unlimited
</code></pre>

in <code>$JAVA_HOME/jre/lib/security/java.security</code>.

It's probably a good idea to remove the old policy JAR's if they were added earlier, as Oracle states in the <a href="http://www.oracle.com/technetwork/java/javase/8u151-relnotes-3850493.html" rel="noreferrer">release notes</a>:

<blockquote>
 Because the old JCE jurisdiction files are left in
 /lib/security, they may not meet the latest security JAR
 signing standards, which were refreshed in 6u131, 7u121, 8u111, and
 later updates.
</blockquote>

<h1>Older Versions</h1>

Answers suggesting to install the JCE files via Homebrew won't work anymore, as the casks were deleted from the Homebrew repository after release of the Java 8 Update 151. If using an older version of Java 8, you'll have to put the JCE-Policy-JAR manually as described in <a href="https://stackoverflow.com/a/41002560/1225882">another answer</a>.

blocks|key|2091322|text|如果您是windows用户：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2091323|在http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html上下载最新的JCE|offset|length|2091324|解压缩zip文件并将两个jar文件复制到下面的目录中|2091325|程序Files\Java\jre1.8.0_131\lib\security|2091326|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html^0|0|1|2A|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

if you're a windows user: 

download the most updated JCE on <a href="http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html" rel="nofollow noreferrer">http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html</a>

extract zip file and copy the two jar files in the following directory

\Program Files\Java\jre1.8.0_131\lib\security

blocks|key|1074210|text|对于Java+8上的Mac用户(OS+)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1074211|$+brew重新安装java8|blockquote|1074212|从JDK1.8u151开始，没有必要单独下载JCE库。简单编辑|1074213|$JDK_HOME/jre/lib/security/java.security|1074214|并取消这一行的评论：|1074215|crypto.policy=unlimited|offset|length|style|CODE|1074216|这将启用无限强度的JCE。|1074217|JDK+1.8u151发行说明|1074218|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/8all-relnotes-2226344.html#R180_151^0|0|0|0|0|0|0|N|0|0|0|F|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|14|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|15|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|17|8|@$M|18|N|19|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1B|8|@]|9|@$M|1C|N|1D|1|1E]]|A|$]]|$1|U|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

<h2>For a Mac user (OS X) on Java 8:</h2>

<blockquote>
 $ brew reinstall java8
</blockquote>

As of JDK 1.8u151 it is not necessary to download the JCE libraries separately. Simply edit

<blockquote>
 $JDK_HOME/jre/lib/security/java.security
</blockquote>

and uncomment the line:

<code>crypto.policy=unlimited</code>

This will enable the unlimited strength JCE.

<a href="http://www.oracle.com/technetwork/java/javase/8all-relnotes-2226344.html#R180_151" rel="noreferrer">JDK 1.8u151 Release Notes</a>

blocks|key|1337977|text|在Java8u152中，可以通过在crypto.policy=unlimited文件中设置|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1337978|/Library/Java/JavaVirtualMachines/<jdk_version>/Contents/Home/jre/lib/security+|code-block|syntax|javascript|1337979|它已经在那个文件里了，但是注释掉了。|1337980|​|1337981|📷|atomic|1337982|1337983|请参阅http://www.oracle.com/technetwork/java/javase/8u152-relnotes-3850503.html#JDK-8157561|1337984|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/42df8979a190bb5a104280f4feb1b2bc.png|imageAlt|1|LINK|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/8u152-relnotes-3850503.html#JDK-8157561^0|H|N|0|0|0|0|0|1|0|0|0|3|2D|1|0^^$0|@$1|2|3|4|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1C|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1D|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1E|8|@]|D|@$9|1F|A|1G|1|1H]]|E|$]]|$1|R|3|N|5|6|7|1I|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1J|8|@]|D|@$9|1K|A|1L|1|1M]]|E|$]]|$1|U|3|-4|5|6|7|1N|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11|12|-4]]|13|$5|14|Y|15|E|$16|17]]]]

As of Java 8u152, unlimited strength can be enabled simply by setting <code>crypto.policy=unlimited</code> in the <code>java.security</code> file in 

<pre><code>/Library/Java/JavaVirtualMachines/&lt;jdk_version&gt;/Contents/Home/jre/lib/security 
</code></pre>

It's already in that file but commented out.

<a href="https://i.stack.imgur.com/Kljim.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Kljim.png" alt="enter image description here"></a>

See <a href="http://www.oracle.com/technetwork/java/javase/8u152-relnotes-3850503.html#JDK-8157561" rel="noreferrer">http://www.oracle.com/technetwork/java/javase/8u152-relnotes-3850503.html#JDK-8157561</a>

blocks|key|1338067|text|对于Java，8u161版本的默认情况下，无限加密是启用的。和其他建议的方法应该不再是必要的(除非您想禁用它)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1338068|这个变化也是似乎包含在JDK+6到JDK+9的其他主要JDK版本中。|1338069|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/8u161-relnotes-4021379.html#JDK-8170157|1|https://bugs.java.com/view_bug.do?bug_id=JDK-8170157^0|F|F|0|0|6|S|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

As of Java JDK version 8u161 <a href="http://www.oracle.com/technetwork/java/javase/8u161-relnotes-4021379.html#JDK-8170157" rel="noreferrer">unlimited cryptography is enabled by default</a> and the other suggested methods should no longer be necessary (unless you want to disable it).

This change also <a href="https://bugs.java.com/view_bug.do?bug_id=JDK-8170157" rel="noreferrer">appears to be included in other major JDK versions from JDK 6 to JDK 9.</a>

I need to install the Java Cryptography Extension for <code>Java 8</code> in <code>OS X</code> / <code>mac OS</code>. It turns out the steps from the README file which came with the <a href="http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html" rel="noreferrer">installer</a> include instructions only for <code>Unix</code> and <code>Windows</code>, but not for <code>OS X</code> / <code>mac OS</code>. I tried to put the JAR files in <code>$JAVA_HOME/lib/security</code>, but it didn't work either. Do you know how can I install them?

How to install unlimited strength JCE for Java 8 in OS X?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我需要在/ mac OS中安装Java 8的Java密码扩展扩展。结果表明，自述的文件中的步骤只包含对Unix和Windows的指令，而不包含对OS X / mac OS的指令。我试图将JAR文件放在$JAVA_HOME/lib/security中，但也没有工作。你知道我怎么安装它们吗？

问如何在OS中安装无限强度的JCE for Java 8？
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问如何在OS中安装无限强度的JCE for Java 8？EN