找不到任何支持AES/GCM/NoPadding的提供程序

问题描述

我们正在尝试在 java 7 中进行支持AES/GCM/NoPadding的加密，以免出现异常.

We are trying to do encryption supporting AES/GCM/NoPadding in java 7 getting below exception.

找不到任何支持AES/GCM/NoPadding的提供商

用于生成密码实例的代码示例如下.

Code sample for generating cipher instance is below.

SecretKeySpec eks = new SecretKeySpec(k, "AES");
Cipher c = Cipher.getInstance("AES/GCM/NoPadding");
c.init(Cipher.ENCRYPT_MODE, eks, new GCMParameterSpec(128, iv));

推荐答案

Java 7 SE不支持此密码( Solaris的例外情况).

This cipher is not supported by Java 7 SE (exception for Solaris).

public static void main(String[] args) throws Exception {
    for (Provider provider : Security.getProviders()) {
        for (Map.Entry<Object, Object> entry : provider.entrySet()) {
            if (((String) entry.getValue()).contains("GCM")) {
                System.out.printf("key: [%s]  value: [%s]%n",
                    entry.getKey(),
                    entry.getValue());
            }
        }
    }
}

在这种情况下，您可以作为服务提供商查看 Bouncy Castle .

You might have a look at Bouncy Castle as service provider in that case.

使用Bouncycastle的小片段.

Small snippet for using Bouncycastle.

1. 从 http://www下载 bcprov-jdk15on-154.jar .bouncycastle.org/latest_releases.html

2. 在您的代码中注册服务提供商

1. download bcprov-jdk15on-154.jar from http://www.bouncycastle.org/latest_releases.html

2. register the service provider in your code

Security.addProvider(new BouncyCastleProvider());

然后您就可以使用该密码，因为(参数"BC" 指定将Bounce Castle用作服务提供者，如果同一密码没有其他提供者，则可以省略)

then you are able to use the cipher as (the paramter "BC" specifies to use Bounce Castle as service provider, can be omitted if there is no other provider for the same cipher)

Cipher c = Cipher.getInstance("AES/GCM/NOPADDING", "BC");

Java 8支持开箱即用的密码

Java 8 support the cipher out of the box with

Cipher c = Cipher.getInstance("AES/GCM/NOPADDING");

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