Magnolia-core brings bcprov-jdk16-1.46.jar and bcprov-ext-jdk16-1.46.jar which should be pretty same. Only difference should be that *-ext-* library include the IDEA encryption algorithm implementation.

From poms:
bcprov-jdk16-1.46.pom

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.6.

bcprov-ext-jdk16-1.46.jar.pom

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.6. Note: this package includes the IDEA encryption algorithm.