Retrofit Trusting SSL with Certificate Pinner

Retrofit-trust-ssl.java

# How to create Pin ?
# Using OpenSSL
# Example with api github
# Open terminal
# openssl s_client -connect api.github.com:443 | openssl x509 -pubkey -noout | openssl rsa -pubin -outform der | openssl dgst -sha256 -binary | openssl enc -base64

# Get a key 

CertificatePinner certificatePinner = new CertificatePinner.Builder()
                   .add("api.github.com", "sha256/6wJsqVDF8K19zxfLxV5DGRneLyzso9adVdUN/exDacw=")
                   .build();
final OkHttpClient client = httpBuilder.certificatePinner(certificatePinner).build();
Retrofit retrofit = new Retrofit.Builder()
                   .baseUrl(END_POINT)
                   .addConverterFactory(GsonConverterFactory.create())
                   .client(client)
                   .build();