Bouncycastle encryption algorithms not provided

Question

I'm trying to use BouncyCastle with android to implement ECDH and EL Gamal. I've added the bouncycastle jar file (bcprov-jdk16-144.jar) and written some code that works with my computers jvm however when I try and port it to my android application it throws:

java.security.NoSuchAlgorithmException: KeyPairGenerator ECDH implementation not found

A sample of the code is:

Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

java.security.KeyPairGenerator keyGen = org.bouncycastle.jce.provider.asymmetric.ec.KeyPairGenerator.getInstance("ECDH", "BC");
                ECGenParameterSpec ecSpec = new ECGenParameterSpec("prime192v1");

                keyGen.initialize(ecSpec, SecureRandom.getInstance("SHA1PRNG"));



                KeyPair pair = keyGen.generateKeyPair();
                PublicKey pubk = pair.getPublic();
                PrivateKey prik = pair.getPrivate();

I then wrote a simple program to see what encryption algorithms are available and ran it on my android emulator and on my computers jvm the code was:

Set<Provider.Service> rar = new org.bouncycastle.jce.provider.BouncyCastleProvider().getServices();
    Iterator<Provider.Service> ir = rar.iterator();
    while(ir.hasNext())
        System.out.println(ir.next().getAlgorithm());

On android I do not get any of the EC algorithms while ran normally on my computer it's fine.

I'm also getting the following two errors when compiling for a lot of the bouncy castle classes:

01-07 17:17:42.548: INFO/dalvikvm(1054): DexOpt: not resolving ambiguous class 'Lorg/bouncycastle/asn1/ASN1Encodable;'

01-07 17:17:42.548: DEBUG/dalvikvm(1054): DexOpt: not verifying 'Lorg/bouncycastle/asn1/ess/OtherSigningCertificate;': multiple definitions

What am I doing wrong?

Answer 1

I don't know if this answers your question, but some of the BouncyCastle libraries are already in the Android SDK. Perhaps the error about ambiguous class is because BouncyCastle is already included in the emulator.

It seems you can use it via the javax.crypto.Cipher class.