JCE cannot authenticate the provider BC in java swing application
encryption, java
Solution
To expand on the comment from GregS, all JCE provider JARs must be signed before they will be trusted by your Java runtime.
BouncyCastle dutifully supplies signed JARs that will work without a problem. However, if you extract class files from this JAR, or recompile the source, it will remove the signature and cause Java to reject the code.
See this related SO question: How to sign a custom JCE security provider
Problem
I am creating a swing based application in Java which uses some encryption technique. But javax.crypto.KeyGenerator.getInstance("AES", "BC") gives exception: ``` java.security.NoSuchProviderException: JCE cannot authenticate the provider BC at javax.crypto.SunJCE_b.a(DashoA13*..) at javax.crypto.KeyGenerator.getInstance(DashoA13*..) ``` So what is the problem?