check authenticated rpc signatures in separate threads

lib/commands/core.js

@@ -129,44 +129,6 @@ Core.isValidCookie = function (Sessions, publicKey, cookie) {
     return true;
 };
 
-Core.checkSignature = function (Env, signedMsg, signature, publicKey) {
-    if (!(signedMsg && publicKey)) { return false; }
-
-    var signedBuffer;
-    var pubBuffer;
-    var signatureBuffer;
-
-    try {
-        signedBuffer = Nacl.util.decodeUTF8(signedMsg);
-    } catch (e) {
-        Env.Log.error('INVALID_SIGNED_BUFFER', signedMsg);
-        return null;
-    }
-
-    try {
-        pubBuffer = Nacl.util.decodeBase64(publicKey);
-    } catch (e) {
-        return false;
-    }
-
-    try {
-        signatureBuffer = Nacl.util.decodeBase64(signature);
-    } catch (e) {
-        return false;
-    }
-
-    if (pubBuffer.length !== 32) {
-        Env.Log.error('PUBLIC_KEY_LENGTH', publicKey);
-        return false;
-    }
-
-    if (signatureBuffer.length !== 64) {
-        return false;
-    }
-
-    return Nacl.sign.detached.verify(signedBuffer, signatureBuffer, pubBuffer);
-};
-
 // E_NO_OWNERS
 Core.hasOwners = function (metadata) {
     return Boolean(metadata && Array.isArray(metadata.owners));