Store ED25519 key pair for future use

src/org/thoughtcrime/securesms/crypto/IdentityKeyUtil.java

@@ -51,6 +51,8 @@ public class IdentityKeyUtil {
 
   public static final String IDENTITY_PUBLIC_KEY_PREF                    = "pref_identity_public_v3";
   public static final String IDENTITY_PRIVATE_KEY_PREF                   = "pref_identity_private_v3";
+  public static final String ED25519_PUBLIC_KEY                          = "pref_ed25519_public_key";
+  public static final String ED25519_SECRET_KEY                          = "pref_ed25519_secret_key";
 
   public static final String lokiSeedKey = "loki_seed";
 

src/org/thoughtcrime/securesms/loki/activities/RegisterActivity.kt

@@ -13,6 +13,7 @@ import android.text.SpannableStringBuilder
 import android.text.method.LinkMovementMethod
 import android.text.style.ClickableSpan
 import android.text.style.StyleSpan
+import android.util.Log
 import android.view.View
 import android.widget.Toast
 import com.goterl.lazycode.lazysodium.LazySodiumAndroid
@@ -119,6 +120,8 @@ class RegisterActivity : BaseActionBarActivity() {
         IdentityKeyUtil.save(this, IdentityKeyUtil.lokiSeedKey, Hex.toStringCondensed(seed))
         IdentityKeyUtil.save(this, IdentityKeyUtil.IDENTITY_PUBLIC_KEY_PREF, Base64.encodeBytes(x25519KeyPair!!.publicKey.serialize()))
         IdentityKeyUtil.save(this, IdentityKeyUtil.IDENTITY_PRIVATE_KEY_PREF, Base64.encodeBytes(x25519KeyPair!!.privateKey.serialize()))
+        IdentityKeyUtil.save(this, IdentityKeyUtil.ED25519_PUBLIC_KEY, Base64.encodeBytes(ed25519KeyPair!!.publicKey.asBytes))
+        IdentityKeyUtil.save(this, IdentityKeyUtil.ED25519_SECRET_KEY, Base64.encodeBytes(ed25519KeyPair!!.secretKey.asBytes))
         val userHexEncodedPublicKey = x25519KeyPair!!.hexEncodedPublicKey
         val registrationID = KeyHelper.generateRegistrationId(false)
         TextSecurePreferences.setLocalRegistrationId(this, registrationID)