OpenSSL is a popular Open Source library that provides developers with an extensive collection of cryptographic functions for transmitting confidential information over the Internet. Because OpenSSL is the only non-commercial library that provides a free, commercial-quality implementation of SSL (a protocol developed by Netscape for transmitting data), this library is commonly used in free and open source Web site projects to protect a broad range of sensitive information such as credit card numbers and other financial transactions. This book documents the OpenSSL library, and provides a solid foundation for developers who have a need for cryptographic functions. Network Security with OpenSSL explains the important aspects of the OpenSSL API in detail and offers a series of practical examples and template code that developers can integrate into their own applications.