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Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for Android.
Android ships with a stripped-down version of Bouncy Castle - this causes classloader collisions if you try to add
an alternative (updated/complete) Bouncy Castle jar.
This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5.
The newest version!
package org.spongycastle.operator.bc;
import java.security.Key;
import org.spongycastle.operator.GenericKey;
class OperatorUtils
{
static byte[] getKeyBytes(GenericKey key)
{
if (key.getRepresentation() instanceof Key)
{
return ((Key)key.getRepresentation()).getEncoded();
}
if (key.getRepresentation() instanceof byte[])
{
return (byte[])key.getRepresentation();
}
throw new IllegalArgumentException("unknown generic key type");
}
}