Have you ever met this Exception like "Cryptography - JCE cannot authenticate provider BC"? and by now you don't know how to deal with it?  If you all say "yes",  Congratulations! Your have came the  right place.

 

Follow me, i will give you the answer and tell you why should do like this.

 

Solution

 

1. DownLoad BC

You can download this lib form ,  type and version should choose by your current case, here i will choose java and which lastest java releases -- .

 

2. Deploy BC to JRE/JDK

Copy this lib to your JRE/JDK base lib directory, for example

as to me, which like:

 

XP:

 

Debin:

 

If you need, you can deploy them to JDK's dir, just as you wish.

 

3.Set JCE Security Provider

Open "java.security" and set the BC provider.

Directory like:

 

XP:

 

Debin:

 

Now, That all of BC part.

 

Addition

As to Java, if you want to use Long key, now you should get the support be JCE,  version should fit to your JDK/JRE. More see my another aritcle " "