Abstract method.
		Signature verifying logic.
556398
def verify(self):
		
		logging.debug("\n\n")
		logging.debug("[+] -- Verify debugging")
		logging.debug("\n\n")

		if self.request.body:
			logging.debug("\n Request body")
			logging.debug(self.request.body)
			data = json.loads(self.request.body)
			message = json.dumps(data.get("message")).replace(" ", "")
			logging.debug("\n")
			logging.debug(message)

		elif self.request.arguments:
			logging.debug("\n Arguments")
			logging.debug(self.request.arguments)
			data = {i:self.get_argument(i) for i in self.request.arguments}
			message = data.get("message", "{}")
			logging.debug(message)

		try:
			# Check if required fields exist
			assert "public_key" in data.keys(), "Missed public key in parameters"
			assert "message" in data.keys(), "Missed message in parameters"
			assert "signature" in data.keys(),"Missed signature in parameters"
			public_key = data["public_key"]
			signature = data["signature"]
			timestamp = data.get("timestamp", None)
			
			# Check if
			#assert ManagementSystemHandler.get_time_stamp() == timestamp, "Timestamps does not match. Try again."

		except Exception as e:
			self.set_status(403)
			self.write({"error":403, "reason": "Missing signature " + str(e)})
			raise tornado.web.Finish

		else:
			# Check if message and signature exist
			# If not - return 403 error code
			if not all([message, public_key, signature]):
				raise tornado.web.HTTPError(403)
		# If exist - call verifying static method
		try:
			logging.debug("\n[] Try block. Verifying")
			logging.debug(message)
			logging.debug(signature)
			logging.debug(public_key)
			flag = Qtum.verify_message(message, signature, public_key)
		except Exception as e:
			# If public key is not valid or it`s missing - return 404 error
			#self.set_status(403)
			#self.write({"error":403, 
			#			"reason":"Forbidden. Invalid signature." + str(e)})
			#raise tornado.web.Finish
			logging.debug("\n Exception")
			logging.debug(str(e))
			pass
1310125
public void verify() {
        try {
            performVerification();
        }
        catch (MessagingException e) {
            throw new AssertionError(buildErrorMessage(e.getDescription()), e);
        }
        catch (Throwable e) {
            throw new AssertionError(buildErrorMessage(e.getMessage()), e);
        }
    }
521845
def verify(self, digest, signature, **kwargs):
        
        ctx = libcrypto.EVP_PKEY_CTX_new(self.key, None)
        if ctx is None:
            raise PKeyError("Initailizing verify context")
        if libcrypto.EVP_PKEY_verify_init(ctx) < 1:
            raise PKeyError("verify_init")
        self._configure_context(ctx, kwargs)
        ret = libcrypto.EVP_PKEY_verify(ctx, signature, len(signature), digest,
                                        len(digest))
        if ret < 0:
            raise PKeyError("Signature verification")
        libcrypto.EVP_PKEY_CTX_free(ctx)
        return ret > 0
188990
function verify(node) {
            if (node.operator !== "=" || node.right.type !== "BinaryExpression") {
                return;
            }

            const left = node.left;
            const expr = node.right;
            const operator = expr.operator;

            if (isCommutativeOperatorWithShorthand(operator) || isNonCommutativeOperatorWithShorthand(operator)) {
                if (same(left, expr.left)) {
                    context.report({
                        node,
                        messageId: "replaced",
                        fix(fixer) {
                            if (canBeFixed(left)) {
                                const equalsToken = getOperatorToken(node);
                                const operatorToken = getOperatorToken(expr);
                                const leftText = sourceCode.getText().slice(node.range[0], equalsToken.range[0]);
                                const rightText = sourceCode.getText().slice(operatorToken.range[1], node.right.range[1]);

                                return fixer.replaceText(node, `${leftText}${expr.operator}=${rightText}`);
                            }
                            return null;
                        }
                    });
                } else if (same(left, expr.right) && isCommutativeOperatorWithShorthand(operator)) {

                    /*
                     * This case can't be fixed safely.
                     * If `a` and `b` both have custom valueOf() behavior, then fixing `a = b * a` to `a *= b` would
                     * change the execution order of the valueOf() functions.
                     */
                    context.report({
                        node,
                        messageId: "replaced"
                    });
                }
            }
        }
765238
private static void simpleClassTypeSignature(Result sb, TypeMirror type) throws IOException
    {
        switch (type.getKind())
        {
            case DECLARED:
                DeclaredType dt = (DeclaredType) type;
                TypeElement te = (TypeElement) dt.asElement();
                nestedSimpleName(sb, te);
                typeArguments(sb, dt.getTypeArguments());
                break;
            default:
                throw new UnsupportedOperationException(type.getKind()+" unsupported");
        }
    }
269237
public static boolean verifySignature(RSAPublicKey key, byte[] message, byte[] signature)
            throws InvalidKeyException, NoSuchAlgorithmException, SignatureException {
        return verifySignature(key, message, signature, DEFAULT_SIGNATURE_ALGORITHM);
    }
1276349
public static void checkClassSignature(final String signature) {
        // ClassSignature:
        // FormalTypeParameters? ClassTypeSignature ClassTypeSignature*

        int pos = 0;
        if (getChar(signature, 0) == '<') {
            pos = checkFormalTypeParameters(signature, pos);
        }
        pos = checkClassTypeSignature(signature, pos);
        while (getChar(signature, pos) == 'L') {
            pos = checkClassTypeSignature(signature, pos);
        }
        if (pos != signature.length()) {
            throw new IllegalArgumentException(signature + ": error at index "
                    + pos);
        }
    }
214354
private static void getInterfaceMethods(Class<?> cls,
                                            Map<Signature, Method> sigs) {
        Class<?>[] intfs = cls.getInterfaces();
        for (int i=0; i < intfs.length; i++) {
            Class<?> intf = intfs[i];
            boolean done = getInternalPublicMethods(intf, sigs);
            if (!done) {
                getInterfaceMethods(intf, sigs);
            }
        }
    }
1174328
@UnstableApi
    public void verify(MockedMethod method, VerificationMode mode) {
        verify((MockedVoidMethod) method::get, mode);
    }
121723
private void verify() {
		if (!this.encoded) {
			return;
		}
		verifyUriComponent(getScheme(), Type.SCHEME);
		verifyUriComponent(this.userInfo, Type.USER_INFO);
		verifyUriComponent(this.host, getHostType());
		this.path.verify();
		for (Map.Entry<String, List<String>> entry : queryParams.entrySet()) {
			verifyUriComponent(entry.getKey(), Type.QUERY_PARAM);
			for (String value : entry.getValue()) {
				verifyUriComponent(value, Type.QUERY_PARAM);
			}
		}
		verifyUriComponent(getFragment(), Type.FRAGMENT);
	}
386398
function verifyOthers() {
      if ( !isTypeString(options.commit) ) {
        errorOption('commit', options.commit);
      }
      if ( !isTypeString(options.tag) ) {
        errorOption('tag', options.tag);
      }
    }
1003783
function(fI, fD, F, alg, rules) {        
        if (!alg) alg = ReasoningEngine.incremental;
        return alg(fI, fD, F, rules);
    }
1233995
public boolean verify() throws SignatureException {
        if (verified)
            return verifyResult;
        if (sigAttr != null) {
            sig.update(sigAttr);
            if (RSAdata != null) {
                byte msd[] = messageDigest.digest();
                messageDigest.update(msd);
            }
            verifyResult = (Arrays.equals(messageDigest.digest(), digestAttr) && sig.verify(digest));
        }
        else {
            if (RSAdata != null)
                sig.update(messageDigest.digest());
            verifyResult = sig.verify(digest);
        }
        verified = true;
        return verifyResult;
    }
1195089
private static boolean methodIsSpecial(String methodName, String methodSig) {
        return SignatureBuilder.SIG_READ_OBJECT.equals(methodName + methodSig);
    }
941797
def verify(self, signature, msg):
        '''
        
        '''
        if not self.key:
            return False
        try:
            self.key.verify(signature + msg)
        except ValueError:
            return False
        return True
1346794
function hasMethod (signature) {
    // convert signature string to method and function name
    signature = getValidSignature(signature)
    // get module
    var module = immutable.modules[signature.moduleName]
    // return false if module does not exist
    if (!defined(module)) {
        return false
    }
    // check if method exists
    return defined(module[signature.methodName]) ? true : false
}
925446
private void genMethodTypeSignature(ExecutableElement method, StringBuilder sb) {
    genOptFormalTypeParameters(method.getTypeParameters(), sb);
    sb.append('(');
    for (VariableElement param : method.getParameters()) {
      genTypeSignature(param.asType(), sb);
    }
    sb.append(')');
    genTypeSignature(method.getReturnType(), sb);
    List<? extends TypeMirror> thrownTypes = method.getThrownTypes();
    if (hasGenericSignature(thrownTypes)) {
      for (TypeMirror thrownType : thrownTypes) {
        sb.append('^');
        genTypeSignature(thrownType, sb);
      }
    }
  }