如果您的目的是验证软件的完整性，就应该下载签名文件。
If you intend to verify the software's integrity, you should download the signature file.
SecureClassLoader 首先从相应URL 处装载字节，如果需要还会验证包围文档文件的数字签名。
The SecureClassLoader starts by loading the bytes of the class from the appropriate URL and verifying the digital signature of the enclosing archive file, if required.
jarsigner工具使用keystore生成或者验证JAR文件的数字签名。
The jarsigner tool uses keystore to generate or verify digital signatures for JAR files.
在验证一个签名的JAR时，将签名文件的摘要值与对JAR文件中的相应项计算的摘要值进行比较。
To validate a file from a signed JAR, a digest value in the signature file is compared against a digest calculated against the corresponding entry in the JAR file.
接下来，输入清单2顶部一行所示的命令来验证您从Apache接收的已签名的ZIP文件。
Next, enter the command shown in the top line of Listing 2 to verify the signed ZIP file you received from apache.
Jarsigner是另一个用于为JAR文件签名并验证签名的实用工具。
Jarsigner is another utility used to sign JAR files and verify such signatures.
jarsigner工具还可以验证一个签名的jar文件，这种操作比签名jar文件要简单得多，只需执行以下命令。
The jarsigner tool can also verify a signed jar file; this operation is considerably simpler than signing the jar file. Just execute the following command.
在将WASServerKeyFile用于私钥的同时，我们还需要一个信任文件以便用于验证签名者。
While the WASServerKeyFile is used for private keys, we need a trust file which will be will be used for validating signers.
当您使用Jarsigner的命令进行验证时，它将列出并验证HelloWorld_1 . 0.0 . jar文件中的签名的基本信息和过期信息。
The basic information and expiration information of the signature in HelloWorld_1.0.0.jar will be listed and verified when you use Jarsigner's command to verify the subject.
在安装插件jar文件之前，我们可以使用jarsigner - verify命令验证它的签名。
We can validate the signature in a signed plug-in jar file with a command of jarsigner -verify before we install it into any product.
并没有提供使用私钥对文件进行签名或解密的权限，但它允许用户验证文件签名并加密文件。
Does not give permission to sign or decrypt files using the private key, but it does allow a user to verify file signatures and to encrypt files.
对加密文件解密，验证用公钥解密签名与解密文件的MD 5值比较，以判断文件是否被修改。
Encrypted files decryption, authentication using public key to decrypt the signature and decrypt files MD5 value to determine whether a document is modified.
对加密文件解密，验证用公钥解密签名与解密文件的MD 5值比较，以判断文件是否被修改。
Encrypted files decryption, authentication using public key to decrypt the signature and decrypt files MD5 value to determine whether a document is modified.
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