Anyone successfully bound SpongyCastle to Xamarin.Android? I bump into a bunch of warnings with my Metadata.xml in the binding project.
So far I have:
<remove-node path="/api/package[@name='org.spongycastle.x509']" />
<remove-node path="/api/package[@name='org.spongycastle.crypto']" />
<remove-node path="/api/package[@name='org.spongycastle.crypto.tls']" />
<remove-node path="/api/package[@name='org.spongycastle.cms']" />
<remove-node path="/api/package[@name='org.spongycastle.crypto.prng']" />
<remove-node path="/api/package[@name='org.spongycastle.openpgp']" />
<remove-node path="/api/package[@name='org.spongycastle.openssl']" />
<remove-node path="/api/package[@name='org.spongycastle.cert.ocsp']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.dh']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.ec']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.digest']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.keystore.bc']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.symmetric']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.dsa']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.util']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.symmetric.util']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.gost']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.ies']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.rsa']" />
<remove-node path="/api/package[@name='org.spongycastle.jcajce.provider.asymmetric.x509']" />
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='CertStoreCollectionSpi']" />
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='MultiCertStoreSpi']" />
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='X509CRLEntryObject']" />
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='X509CRLObject']" />
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='X509CertificateObject']" />
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='X509LDAPCertStoreSpi']"/>
<remove-node path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='PKIXPolicyNode']" />
<remove-node path="/api/package[@name='org.spongycastle.pqc.jcajce.provider.rainbow']" />
<remove-node path="/api/package[@name='org.spongycastle.pqc.jcajce.provider.mceliece']"/>
<remove-node path="/api/package[@name='org.spongycastle.pqc.jcajce.provider.util']" />
<remove-node path="/api/package[@name='org.spongycastle.pqc.crypto.ntru']" />
<remove-node path="/api/package[@name='org.spongycastle.pqc.math.ntru.polynomial']" />
So it compiles, but when using the binding project in the Xamarin.Android project it takes several mins. to compile and then it fails complaining about the HEAP size of Java.
When I set the heap size to 1GB, it completes, but debugging is then broken when running the app in debug mode on device.
Is there a way to just use the ARRs without a binding library? I just need to invoke a wrapper method that I made in this ARR and get the output from that. I don't need to access the full library through C#. Or is there a better way?
Update: And when I build the CPU looks like this (Look at Java):
I ended up removing almost everything related to BouncyCastle and SpongyCastle in my metadata.xml file in the binding project. Then I copied parts of the generated BouncyCastleProvider from the generated files folder in the Binding Project. So I created my own JNI wrapper only for the parts I needed to call.
It works great. Now compile time is reduced to a few seconds and deployment is fast during debugging. And I enjoy the third party libraries.
My take from this was to generate C# classes first and then choose to implement parts of the JNI in my own library and add/remove nodes in Metadata.xml.
using System;
using System.Collections.Generic;
using Android.Runtime;
namespace Org.Spongycastle.Jce.Provider
{
// Metadata.xml XPath class reference: path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='BouncyCastleProvider']"
[global::Android.Runtime.Register("org/spongycastle/jce/provider/BouncyCastleProvider", DoNotGenerateAcw = true)]
public sealed partial class BouncyCastleProvider : global::Java.Security.Provider
{
// Metadata.xml XPath field reference: path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='BouncyCastleProvider']/field[@name='PROVIDER_NAME']"
[Register("PROVIDER_NAME")]
public const string ProviderName = (string)"SC";
internal static IntPtr java_class_handle;
internal static IntPtr class_ref
{
get
{
return JNIEnv.FindClass("org/spongycastle/jce/provider/BouncyCastleProvider", ref java_class_handle);
}
}
protected override IntPtr ThresholdClass
{
get { return class_ref; }
}
protected override global::System.Type ThresholdType
{
get { return typeof(BouncyCastleProvider); }
}
internal BouncyCastleProvider(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer) { }
static IntPtr id_ctor;
// Metadata.xml XPath constructor reference: path="/api/package[@name='org.spongycastle.jce.provider']/class[@name='BouncyCastleProvider']/constructor[@name='BouncyCastleProvider' and count(parameter)=0]"
[Register(".ctor", "()V", "")]
public unsafe BouncyCastleProvider()
: base(IntPtr.Zero, JniHandleOwnership.DoNotTransfer)
{
if (Handle != IntPtr.Zero)
return;
try
{
if (GetType() != typeof(BouncyCastleProvider))
{
SetHandle(
global::Android.Runtime.JNIEnv.StartCreateInstance(GetType(), "()V"),
JniHandleOwnership.TransferLocalRef);
global::Android.Runtime.JNIEnv.FinishCreateInstance(Handle, "()V");
return;
}
if (id_ctor == IntPtr.Zero)
id_ctor = JNIEnv.GetMethodID(class_ref, "<init>", "()V");
SetHandle(
global::Android.Runtime.JNIEnv.StartCreateInstance(class_ref, id_ctor),
JniHandleOwnership.TransferLocalRef);
JNIEnv.FinishCreateInstance(Handle, class_ref, id_ctor);
}
finally
{
}
}
}
}