1 2 OpenSSL 1.1.1k 25 Mar 2021 3 4 Copyright (c) 1998-2021 The OpenSSL Project 5 Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson 6 All rights reserved. 7 8 DESCRIPTION 9 ----------- 10 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. 15 16 OpenSSL is descended from the SSLeay library developed by Eric A. Young 17 and Tim J. Hudson. The OpenSSL toolkit is licensed under a dual-license (the 18 OpenSSL license plus the SSLeay license), which means that you are free to 19 get and use it for commercial and non-commercial purposes as long as you 20 fulfill the conditions of both licenses. 21 22 OVERVIEW 23 -------- 24 25 The OpenSSL toolkit includes: 26 27 libssl (with platform specific naming): 28 Provides the client and server-side implementations for SSLv3 and TLS. 29 30 libcrypto (with platform specific naming): 31 Provides general cryptographic and X.509 support needed by SSL/TLS but 32 not logically part of it. 33 34 openssl: 35 A command line tool that can be used for: 36 Creation of key parameters 37 Creation of X.509 certificates, CSRs and CRLs 38 Calculation of message digests 39 Encryption and decryption 40 SSL/TLS client and server tests 41 Handling of S/MIME signed or encrypted mail 42 And more... 43 44 INSTALLATION 45 ------------ 46 47 See the appropriate file: 48 INSTALL Linux, Unix, Windows, OpenVMS, ... 49 NOTES.* INSTALL addendums for different platforms 50 51 SUPPORT 52 ------- 53 54 See the OpenSSL website www.openssl.org for details on how to obtain 55 commercial technical support. Free community support is available through the 56 openssl-users email list (see 57 https://www.openssl.org/community/mailinglists.html for further details). 58 59 If you have any problems with OpenSSL then please take the following steps 60 first: 61 62 - Download the latest version from the repository 63 to see if the problem has already been addressed 64 - Configure with no-asm 65 - Remove compiler optimization flags 66 67 If you wish to report a bug then please include the following information 68 and create an issue on GitHub: 69 70 - OpenSSL version: output of 'openssl version -a' 71 - Configuration data: output of 'perl configdata.pm --dump' 72 - OS Name, Version, Hardware platform 73 - Compiler Details (name, version) 74 - Application Details (name, version) 75 - Problem Description (steps that will reproduce the problem, if known) 76 - Stack Traceback (if the application dumps core) 77 78 Just because something doesn't work the way you expect does not mean it 79 is necessarily a bug in OpenSSL. Use the openssl-users email list for this type 80 of query. 81 82 HOW TO CONTRIBUTE TO OpenSSL 83 ---------------------------- 84 85 See CONTRIBUTING 86 87 LEGALITIES 88 ---------- 89 90 A number of nations restrict the use or export of cryptography. If you 91 are potentially subject to such restrictions you should seek competent 92 professional legal advice before attempting to develop or distribute 93 cryptographic code. 94