I have a Spring boot(1.4.2.RELEASE) project with bouncycastle as a dependency in the pom.xml as in the following: pom.xml. Org.bouncycastle bcprov-jdk15on 1.54 org.bouncycastle bcpkix-jdk15on 1.54. However, when I attempt to specify 'BC' as the provider for a JCA operation in my code, such as: Signature aSig = Signature.getInstance('SHA256withRSA','BC'); I get the standard no such provider exception: java.security.NoSuchProviderException: no such provider: BC despite having the entry security.provider.1=org.bouncycastle.jce.provider.BouncyCastleProvider in my jre's java.security file. With this dependency in my pom file, the built jar has the bouncy castle jars in the BOOT-INF/lib folder: 3277268 Tue Dec 29 12:46:28 EST 2015 BOOT-INF/lib/bcprov-jdk15on-1.54.jar 673715 Tue Dec 29 12:46:02 EST 2015 BOOT-INF/lib/bcpkix-jdk15on-1.54.jar I can access the classes within them with no issue but JCA can't find the provider.

So, does JCA require the provider jars to be in jre/lib/ext?or am I simply missing something? EDIT: However, this: Signature.getInstance('SHA256withRSA',new BouncyCastleProvider()); works. I guess it is a classloader issue. Static initialization when the jars are not in jre/lib/ext fails because the provider instantiation is done by JVM, and the classpath of your application is not visible globally. Probably you will found the error in some log. Signature.getInstance('SHA256withRSA','BC') fails consencuently because provider is not initialized.

New BouncyCastleProvider() instantiates the provider dinamically using the application classpath, so bouncycastle jars are visible. Signature.getInstance() will use the recently created provider and works. – Dec 8 '16 at 21:25.

How can the answer be improved? In order to use Oracle JCE Provider, you must install JCE 1.2.1 on your system. I tried installing bouncy castle with osgi:install. Hi, I have a. Installing the BouncyCastle JCE provider. The provider can be configured as part of your. Under Windows there will normally be a JRE and a JDK install of.

In crypto everything needs to match exactly on both sides. That means checking that everything matches, byte for byte.

Clipgrab 3 4 9 Portable Fans. Do your IV's match byte for byte? Do your final keys (after the KDFs) match byte for byte?

Do the two cyphertexts match byte for byte? There may have been transmission problems between the two systems. Do you get any error messages when trying to decrypt, such as a 'Bad Padding' error?