如何进入不受密码保护的Java密钥库或更改密码？

我正在尝试将受信任的证书导入Java cacerts密钥库，但是我遇到了问题。我试图列出现有的受信任证书，但似乎密钥库没有密码保护。

$ keytool -list -keystore cacerts
Enter keystore password:

*****************  WARNING WARNING WARNING  *****************
* The integrity of the information stored in your keystore  *
* has NOT been verified!  In order to verify its integrity, *
* you must provide your keystore password.                  *
*****************  WARNING WARNING WARNING  *****************

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 76 entries

我尝试导入受信任的证书：

$ keytool -importcert -alias "JiraCert" -file /root/c9ssl.crt -keystore /etc/java-6-sun/security/cacerts
Enter keystore password:  
Keystore password is too short - must be at least 6 characters
Enter keystore password:  
Keystore password is too short - must be at least 6 characters
Enter keystore password:  
Keystore password is too short - must be at least 6 characters
Too many failures - try later

我还尝试将密码从“无”更改为：

$ keytool -storepasswd -keystore cacerts.back
Enter keystore password:
Keystore password is too short - must be at least 6 characters
Enter keystore password:
Keystore password is too short - must be at least 6 characters
Enter keystore password:
Keystore password is too short - must be at least 6 characters
Too many failures - try later

这意味着cacerts密钥库不受密码保护

这是一个错误的假设。如果您仔细阅读，则会发现该清单是在未验证密钥库完整性的情况下提供的，因为您没有提供密码。该清单不需要密码，但是您的密钥库肯定有密码，如以下所示：

为了验证其完整性，您必须提供密钥库密码。

Java的默认cacerts密码为“ changeit”，除非您使用的是Mac上的“ changeme”密码，直到特定点为止。显然，从Mountain Lion（基于注释和此处的另一个答案）开始，Mac的密码现在也变成了“ changeit”，这可能是因为Oracle现在也在处理Mac JVM的分发。

默认情况下，密钥库的密码为：“ changeit”。我执行了您在此处输入的用于导入证书的命令。希望您已经解决了您的问题。

Mac Mountain Lion现在使用Oracle时具有相同的密码。

可以借助Java编程语言本身来进入不受密码保护的Java密钥库并更改密码。

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