4 Copyright (c) 1998-2018 The OpenSSL Project
5 Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson
11 The OpenSSL Project is a collaborative effort to develop a robust,
12 commercial-grade, fully featured, and Open Source toolkit implementing the
13 Transport Layer Security (TLS) protocols (including SSLv3) as well as a
14 full-strength general purpose cryptographic library.
16 OpenSSL is descended from the SSLeay library developed by Eric A. Young
19 The OpenSSL toolkit is licensed under the Apache License 2.0, which means
20 that you are free to get and use it for commercial and non-commercial
21 purposes as long as you fulfill its conditions.
26 The OpenSSL toolkit includes:
28 libssl (with platform specific naming):
29 Provides the client and server-side implementations for SSLv3 and TLS.
31 libcrypto (with platform specific naming):
32 Provides general cryptographic and X.509 support needed by SSL/TLS but
33 not logically part of it.
36 A command line tool that can be used for:
37 Creation of key parameters
38 Creation of X.509 certificates, CSRs and CRLs
39 Calculation of message digests
40 Encryption and decryption
41 SSL/TLS client and server tests
42 Handling of S/MIME signed or encrypted mail
48 See the appropriate file:
49 INSTALL Linux, Unix, Windows, OpenVMS, ...
50 NOTES.* INSTALL addendums for different platforms
55 See the OpenSSL website www.openssl.org for details on how to obtain
56 commercial technical support. Free community support is available through the
57 openssl-users email list (see
58 https://www.openssl.org/community/mailinglists.html for further details).
60 If you have any problems with OpenSSL then please take the following steps
63 - Download the latest version from the repository
64 to see if the problem has already been addressed
65 - Configure with no-asm
66 - Remove compiler optimization flags
68 If you wish to report a bug then please include the following information
69 and create an issue on GitHub:
71 - OpenSSL version: output of 'openssl version -a'
72 - Configuration data: output of 'perl configdata.pm --dump'
73 - OS Name, Version, Hardware platform
74 - Compiler Details (name, version)
75 - Application Details (name, version)
76 - Problem Description (steps that will reproduce the problem, if known)
77 - Stack Traceback (if the application dumps core)
79 Just because something doesn't work the way you expect does not mean it
80 is necessarily a bug in OpenSSL. Use the openssl-users email list for this type
83 HOW TO CONTRIBUTE TO OpenSSL
84 ----------------------------
91 A number of nations restrict the use or export of cryptography. If you
92 are potentially subject to such restrictions you should seek competent
93 professional legal advice before attempting to develop or distribute