Security Developer s Guide - Oracle

Java Platform, Standard Edition

Security Developer's Guide

Release 10

E91076-01 March 2018

Java Platform, Standard Edition Security Developer's Guide, Release 10

E91076-01

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Contents

Preface

Audience Documentation Accessibility Related Documents Conventions

1 General Security

Java Security Overview Introduction to Java Security Java Language Security and Bytecode Verification Basic Security Architecture Security Providers File Locations Java Cryptography Public Key Infrastructure Key and Certificate Storage Public Key Infrastructure Tools Authentication Secure Communication SSL, TLS, and DTLS Protocols Simple Authentication and Security Layer (SASL) Generic Security Service API and Kerberos Access Control Permissions Security Policy Access Control Enforcement XML Signature Additional Information about Java Security Java Security Classes Summary Deprecated Security APIs Marked for Removal Security Tools Summary Built-In Providers

xx xx xx xx

1-1 1-1 1-2 1-3 1-3 1-5 1-6 1-7 1-7 1-8 1-9 1-10 1-11 1-11 1-12 1-12 1-12 1-13 1-14 1-15 1-16 1-16 1-18 1-19 1-20

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Java SE Platform Security Architecture Introduction The Original Sandbox Model Evolving the Sandbox Model Protection Mechanisms ? Overview of Basic Concepts Permissions and Security Policy The Permission Classes java.security.CodeSource java.security.Policy java.security.GeneralSecurityException Access Control Mechanisms and Algorithms java.security.ProtectionDomain java.security.AccessController Inheritance of Access Control Context java.security.AccessControlContext Secure Class Loading Class Loader Class Hierarchies The Primordial Class Loader Class Loader Delegation Class Resolution Algorithm Security Management Managing Applets and Applications SecurityManager versus AccessController Auxiliary Tools GuardedObject and SignedObject java.security.GuardedObject and java.security.Guard java.security.SignedObject Discussion and Future Directions Resource Consumption Management Arbitrary Grouping of Permissions Object-Level Protection Subdividing Protection Domains Running Applets with Signed Content Appendix A: API for Privileged Blocks Using the doPrivileged API What It Means to Have Privileged Code Reflection Appendix B: Acknowledgments Appendix C: References

Standard Algorithm Names Permissions in the JDK

1-20 1-20 1-20 1-22 1-23 1-25 1-25 1-34 1-34 1-45 1-46 1-46 1-46 1-50 1-51 1-53 1-53 1-53 1-54 1-54 1-55 1-55 1-56 1-57 1-58 1-58 1-59 1-60 1-60 1-60 1-61 1-61 1-61 1-62 1-62 1-67 1-68 1-69 1-69 1-70 1-70

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Permission Descriptions and Risks Methods and the Permissions They Require java.lang.SecurityManager Method Permission Checks

Default Policy Implementation and Policy File Syntax Default Policy Implementation Default Policy File Locations Modifying the Policy Implementation Policy File Syntax Policy File Examples Property Expansion in Policy Files Windows Systems, File Paths, and Property Expansion General Expansion in Policy Files

Appendix A: FilePermission Path Name Canonicalization Disabled By Default Troubleshooting Security

2 Java Cryptography Architecture (JCA) Reference Guide

Introduction to Java Cryptography Architecture JCA Design Principles Provider Architecture Cryptographic Service Providers How Providers Are Actually Implemented Keystores Engine Classes and Algorithms

Core Classes and Interfaces The Provider Class How Provider Implementations Are Requested and Supplied Installing Providers Provider Class Methods The Security Class Managing Providers Security Properties The SecureRandom Class Creating a SecureRandom Object Seeding or Re-Seeding the SecureRandom Object Using a SecureRandom Object Generating Seed Bytes The MessageDigest Class Creating a MessageDigest Object Updating a Message Digest Object Computing the Digest

1-71 1-72 1-91 1-94 1-95 1-95 1-97 1-97 1-102 1-104 1-105 1-106 1-108 1-109

2-1 2-2 2-3 2-3 2-5 2-7 2-7 2-8 2-9 2-10 2-12 2-12 2-13 2-14 2-15 2-15 2-16 2-16 2-17 2-17 2-17 2-17 2-18 2-18

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