spongycastle

My knowledge of encryption is very basic, so apologies for any ignorance on my part. Within an Android app I am currently trying to mimic the execution of this command using the SpongyCastle library and standard java.security libs: echo 'test' | openssl rsautl -encrypt -pubin -inkey test.pub | base64 > encrypted_file It should be noted that the reading/writing to and from files in the command are not going to be implemented and I have my public key (i.e. test.pub ) as a Base64 encoded string base64key in my code. I have attempted the following but am certain it does not work: static { Security

The goal I'm working on implementing communication with Client-Certificate. Step 1: Create a PKCS#10 request (CSR) and give it to the my server for signing. The server contacts passes the CSR to the CA, and the CA signs it, and returns a PKCS#7 (with the signed PKCS#10 and the CA's certificate). Step 2: Create a PKCS#12, store it securely on the Android device Step 3: Create SSL connection so that the client will be authenticated according to the certificate. Now, Step 1 works perfectly using SpongyCastle 1.50.0.0, but I'm stuck on the other steps... I'm currently getting an SSL-Handshake

I'm trying to implement a Client Certificates communication for an Android App, so far without much success - and it seems that this feature is, if at all possible, very hard. The full flow I'm implementing is described in my previous question . I followed the code there and code from this blog post , describing the same scenario, more or less, without results. What doesn't work: Opening an SSL Connection ( HttpsURLConnection ) between the Android Client and the Server causes the server to return an 403 status code . AFAIK, this 403 is because the server doesn't get or doesn't trust the Client

I understand this is something which is not so difficult but very unfortunately I am stuck here and fighting it since yesterday, I have followed this Mutual Authentication in Android tutorial, to place a keystore in resources and trying to connect to my server over SSL, but getting the following exception java.lang.RuntimeException: org.spongycastle.jcajce.provider.asymmetric.x509.CertificateFactory$ExCertificateException I have placed my sslapptruststore.pfx file under res/raw/sslapptruststore.pfx and using this piece of code try { KeyStore clientCert = KeyStore.getInstance("PKCS12");