Category:OWASP Enterprise Security API

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ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library that makes it easier for programmers to write lower-risk applications. The ESAPI libraries are designed to make it easier for programmers to retrofit security into existing applications. The ESAPI libraries also serve as a solid foundation for new development. Allowing for language-specific differences, all OWASP ESAPI versions have the same basic design: There is a set of security control interfaces. They define for example types of parameters that are passed to types of security controls. There is a reference implementation for each security control. The logic is not organization‐specific and the logic is not application‐specific. An example: string‐based input validation. There are optionally your own implementations for each security control. There may be application logic contained in these classes which may be developed by or for your organization. An example: enterprise authentication. The following organizations are a few of the many organizations that are starting to adopt ESAPI to secure their web applications: American Express, Apache Foundation, Booz Allen Hamilton, Aspect Security, Foundstone(McAfee), The Hartford, Infinite Campus, Lockheed Martin, MITRE, Nationwide Insurance, U.S. Navy - SPAWAR, The World Bank, SANS Institute. Please let us know how your organization is using OWASP ESAPI. Include your name, organization's name, and brief description of how you are using it. The project lead can be reached here.

ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library that makes it easier for programmers to write lower-risk applications. The ESAPI libraries are designed to make it easier for programmers to retrofit security into existing applications. The ESAPI libraries also serve as a solid foundation for new development.

Allowing for language-specific differences, all OWASP ESAPI versions have the same basic design:

There is a set of security control interfaces. They define for example types of parameters that are passed to types of security controls.

There is a reference implementation for each security control. The logic is not organization‐specific and the logic is not application‐specific. An example: string‐based input validation.

There are optionally your own implementations for each security control. There may be application logic contained in these classes which may be developed by or for your organization. An example: enterprise authentication.

The following organizations are a few of the many organizations that are starting to adopt ESAPI to secure their web applications: American Express, Apache Foundation, Booz Allen Hamilton, Aspect Security, Foundstone(McAfee), The Hartford, Infinite Campus, Lockheed Martin, MITRE, Nationwide Insurance, U.S. Navy - SPAWAR, The World Bank, SANS Institute. Please let us know how your organization is using OWASP ESAPI. Include your name, organization's name, and brief description of how you are using it. The project lead can be reached here.


Let's talk here ESAPI Communities Further development of ESAPI occurs through mailing list discussions and occasional workshops, and suggestions for improvement are welcome. For more information, please contact us. esapi-user mailing list (this is the main list) esapi-dev mailing list esapi-php mailing list esapi-python mailing list esapi-ruby mailing list esapi-swingset mailing list esapi-summit mailing list	Got developer cycles? ESAPI Coding The ESAPI project is always on the lookout for volunteers who are interested in contributing developer cycles. ESAPI for PHP Developer Onboarding Instructions ESAPI for other languages developer onboarding instructions -- coming soon!	Related resources OWASP Resources OWASP Top Ten OWASP Application Security Verification Standard OWASP Development Guide OWASP Legal Project SQL Injection Prevention Cheat Sheet XSS (Cross Site Scripting) Prevention Cheat Sheet OWASP Press Releases

Let's talk here

ESAPI Communities

Further development of ESAPI occurs through mailing list discussions and occasional workshops, and suggestions for improvement are welcome. For more information, please contact us.

Got developer cycles?

ESAPI Coding

The ESAPI project is always on the lookout for volunteers who are interested in contributing developer cycles.

ESAPI for PHP Developer Onboarding Instructions
ESAPI for other languages developer onboarding instructions -- coming soon!

Related resources

OWASP Resources


1. About ESAPI Data sheet(PDF,Word) Project presentation (PowerPoint) Video presentation (YouTube) 2. Get ESAPI ESAPI for Java 1.4.4 complete zip (JDK 1.4+) ESAPI for Java 2.0 rc7 complete zip (JDK 1.5+) ESAPI for .NET ESAPI for Classic ASP ESAPI for PHP ESAPI for ColdFusion & CFML ESAPI for Python ESAPI for Javascript	3. Learn ESAPI ESAPI design patterns (not language-specific): (PDF, Word, PPT) The ESAPI Swingset sample application demonstrates how to leverage ESAPI to protect a web application. LAMP should be spelled LAMPE (PDF) ESAPI for Java interface documentation (JavaDocs) ESAPI for PHP interface documentation (phpdoc)

This project licensed under the BSD license, which is very permissive and about as close to public domain as is possible. You can use or modify ESAPI however you want, even include it in commercial products.