SSL Source Code

Stunnel will work and compile with either SSLeay or OpenSSL. OpenSSL is the offshoot of the last available SSLeay release, and is the more sophisticated and supported SSL library of the two.

We strongly suggest you use OpenSSL version 0.9.6e or later. Versions prior to this have several buffer overflows that could leave you open to remote compromise, and earlier versions did not properly exit if insufficient randomness was available.

So, go ahead and visit the OpenSSL main distribution site.

The Stunnel software package does not contain any cryptography itself, however please remember that import and/or export of cryptographic software, code providing hooks to cryptographic algorithms, and discussion about cryptography is illegal in some countries. It is imperative for you to know your local laws governing cryptography. We're not liable for anything you do that violates your local laws.