openssl audit file download Open SSL. OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library. For more information about the team and community around the project, or to start making your own contributions, start with the community page. To get the latest news, download the source, and so on, please see the sidebar or the buttons at the top of every page. OpenSSL is licensed under an Apache-style license, which basically means that you are free to get and use it for commercial and non-commercial purposes subject to some simple license conditions. For a list of vulnerabilities, and the releases in which they were found and fixes, see our Vulnerabilities page. Latest News. Date Item 17-Jun-2021 New Blog post: OpenSSL 3.0 Release Candidate 17-Jun-2021 Beta 1 of OpenSSL 3.0 is now available. This is a release candidate: please download and test it 20-May-2021 Alpha 17 of OpenSSL 3.0 is now available: please download and test it 06-May- 2021 Alpha 16 of OpenSSL 3.0 is now available: please download and test it 22-Apr-2021 Alpha 15 of OpenSSL 3.0 is now available: please download and test it More. Legalities. Please remember that export/import and/or use of strong cryptography software, providing cryptography hooks, or even just communicating technical details about cryptography software is illegal in some parts of the world. So when you import this package to your country, re-distribute it from there or even just email technical suggestions or even source patches to the authors or other people you are strongly advised to pay close attention to any laws or regulations which apply to you. The authors of OpenSSL are not liable for any violations you make here. So be careful, it is your responsibility. Open SSL. The master sources are maintained in our git repository, which is accessible over the network and cloned on GitHub, at https://github.com/openssl/openssl. Bugs and pull patches (issues and pull requests) should be filed on the GitHub repo. Please familiarize yourself with the license. The table below lists the latest releases for every branch. (For an explanation of the numbering, see our release strategy.) All releases can be found at /source/old. A list of mirror sites can be found here. Note: The latest stable version is the 1.1.1 series. This is also our Long Term Support (LTS) version, supported until 11th September 2023. All older versions (including 1.1.0, 1.0.2, 1.0.0 and 0.9.8) are now out of support and should not be used. Users of these older versions are encouraged to upgrade to 1.1.1 as soon as possible. Extended support for 1.0.2 to gain access to security fixes for that version is available. The OpenSSL FIPS Object Module 2.0 (FOM) is also available for download. It is no longer receiving updates. It must be used in conjunction with a FIPS capable version of OpenSSL (1.0.2 series). A new FIPS module is currently in development. OpenSSL 3.0 is the next major version of OpenSSL that is currently in development and includes the new FIPS Object Module. A pre-release version of this is available below. This is for testing only. It should not be used in production. For an overview of some of the key concepts in OpenSSL 3.0 see the libcrypto manual page. Information and notes about migrating existing applications to OpenSSL 3.0 are available in the OpenSSL 3.0 Migration Guide. KBytes Date File 14530 2021-Jun-17 13:17:50 openssl-3.0.0-beta1.tar.gz (SHA256) (PGP sign) (SHA1) 9593 2021-Mar-25 13:41:15 openssl-1.1.1k.tar.gz (SHA256) (PGP sign) (SHA1) 1457 2017-May-24 18:01:01 openssl-fips-2.0.16.tar.gz (SHA256) (PGP sign) (SHA1) 1437 2017-May-24 18:01:01 openssl-fips-ecp-2.0.16.tar.gz (SHA256) (PGP sign) (SHA1) When building a release for the first time, please make sure to look at the INSTALL file in the distribution along with any NOTES file applicable to your platform. If you have problems, look at the FAQ, which can be found online. If you still need more help, then join the openssl-users email list and post a question there. PGP keys for the signatures are available from the OMC page. Current members that sign releases include Richard Levitte and Matt Caswell. Each day we make a snapshot of each development branch. They can be found at https://www.openssl.org/source/snapshot/. These daily snapshots of the source tree are provided for convenience only and not even guaranteed to compile. Note that keeping a git local repository and updating it every 24 hours is equivalent and will often be faster and more efficient. Legalities. Please remember that export/import and/or use of strong cryptography software, providing cryptography hooks, or even just communicating technical details about cryptography software is illegal in some parts of the world. So when you import this package to your country, re-distribute it from there or even just email technical suggestions or even source patches to the authors or other people you are strongly advised to pay close attention to any laws or regulations which apply to you. The authors of OpenSSL are not liable for any violations you make here. So be careful, it is your responsibility. OpenSSL 3.0 Release Candidate. The OpenSSL Management Committee (OMC) and the OpenSSL Technical Committee (OTC) are glad to announce our first beta release of OpenSSL 3.0. We consider this to be a release candidate and as such encourage all OpenSSL users to build and test against this beta release and provide feedback. OpenSSL 3.0 Alpha7 Release. Posted by Nicola Tuveri , Oct 20 th , 2020 7:00 pm. The OpenSSL Management Committee (OMC) and the OpenSSL Technical Committee (OTC) are glad to announce the seventh alpha release of OpenSSL 3.0. OpenSSL Is Looking for a Full Time Administrator and Manager. Posted by Matt Caswell , Sep 5 th , 2020 10:00 am. The OpenSSL Management Committee are looking to hire a full time Administrator and Manager. Details of the role follow. OpenSSL 3.0 Alpha4 Release. Posted by Nicola Tuveri , Jun 25 th , 2020 7:00 pm. The OpenSSL Management Committee and the OpenSSL Technical Committee are glad to announce the fourth alpha release of OpenSSL 3.0. OpenSSL 3.0 Alpha3 Release. Posted by Nicola Tuveri , Jun 5 th , 2020 12:00 pm. The OpenSSL Management Committee and the OpenSSL Technical Committee are glad to announce the third alpha release of OpenSSL 3.0. OpenSSL 3.0 Alpha2 Release. Posted by Nicola Tuveri , May 16 th , 2020 12:00 pm. The OpenSSL Management Committee and the OpenSSL Technical Committee are glad to announce the second alpha release of OpenSSL 3.0. Security Policy Update on Prenotifications. Posted by Mark J Cox , May 12 th , 2020 9:00 am. We’re planning to extend who we prenotify of any future High and Critical security issues. OpenSSL 3.0 Alpha1 Release. Posted by Nicola Tuveri , Apr 23 rd , 2020 12:00 pm. The OpenSSL Management Committee and the OpenSSL Technical Committee are glad to announce the first alpha release of OpenSSL 3.0. QUIC and OpenSSL. Posted by OpenSSL Management Committee , Feb 17 th , 2020 12:00 pm. QUIC is a new protocol which the IETF talks about as A UDP-Based Multiplexed and Secure Transport, and has attracted a lot of attention lately. The OpenSSL Management Committee (OMC) have followed the development with interest, and we feel that we owe it to the community to say where we stand on this, and on the inclusion of support for this protocol in our libraries. Update on 3.0 Development, FIPS and 1.0.2 EOL. Posted by Matt Caswell , Nov 7 th , 2019 4:00 pm. We have previously talked about our plans for OpenSSL 3.0 and FIPS support here. This blog post will give an update about what has been happening since then. Binaries. Some people have offered to provide OpenSSL binary distributions for selected operating systems. The condition to get a link here is that the link is stable and can provide continued support for OpenSSL for a while. Note: many Linux distributions come with pre-compiled OpenSSL packages. Those are already well-known among the users of said distributions, and will therefore not be mentioned here. If you are such a user, we ask you to get in touch with your distributor first. This service is primarily for operating systems where there are no pre-compiled OpenSSL packages. Important Disclaimer : The listing of these third party products does not imply any endorsement by the OpenSSL project, and these organizations are not affiliated in any way with OpenSSL other than by the reference to their independent web sites here. In particular any donations or payments to any of these organizations will not be known to, seen by, or in any way benefit the OpenSSL project. Use these OpenSSL derived products at your own risk; these products have not been evaluated or tested by the OpenSSL project. Third Party OpenSSL Related Binary Distributions Product Description URL OpenSSL for Windows Works with MSVC++, Builder 3/4/5, and MinGW. Comes in form of self-install executables. https://slproweb.com/products/Win32OpenSSL.html OpenSSL for Windows Pre-compiled Win32/64 libraries without external dependencies to the Microsoft Visual Studio Runtime DLLs, except for the system provided msvcrt.dll. https://indy.fulgan.com/SSL/ OpenSSL for Windows Reproducible 1.1.x builds with latest MinGW-w64/GCC, 64/32-bit, static/dynamic libs and executable. https://github.com/curl/curl-for-win#binary-package-downloads OpenSSL for Solaris Versions for Solaris 2.5 - 11 SPARC and X86 http://www.unixpackages.com/ OpensSSL for Windows, Linux, OSX, Android Pre-compiled packages at conan.io package manager: Windows x86/x86_64 (Visual Studio 10, 12, 14, 15) Linux x86/x86_64 (gcc 4.6, 4.8, 4.9, 5, 6, 7) OSx (Apple clang). Cross-building ready recipe: Linux ARM, Android. https://www.conan.io https://bintray.com/conan-community/conan/OpenSSL%3Aconan OpenSSL for Windows Pre-compiled Win32/64 1.0.2, 1.1.0 and 1.1.1 libraries without external dependencies, primarily built for François Piette's Internet Component Suite (ICS) for Embarcadero (Borland) Delphi and C++ development tools, but may be used for any Windows applications. The OpenSSL DLLs and EXE files are digitally code signed 'Open Source Developer, François PIETTE', so applications can self verify them for corruption. http://wiki.overbyte.eu/wiki/index.php/ICS_Download OpenSSL for Windows Pre-compiled 64-bit (x64) and 32-bit (x86) 1.1.1 executables and libraries for Microsoft Windows Operating Systems with a dependency on the Microsoft Visual Studio 2015-2019 runtime. The distribution may be used standalone or integrated into any Windows application. The distribution's EXE and DLL files are digitally signed 'FireDaemon Technologies Limited'. https://kb.firedaemon.com/support/solutions/articles/4000121705. Engines [ edit ] Some third parties provide OpenSSL compatible engines. As for the binaries above the following disclaimer applies: Important Disclaimer : The listing of these third party products does not imply any endorsement by the OpenSSL project, and these organizations are not affiliated in any way with OpenSSL other than by the reference to their independent web sites here. In particular any donations or payments to any of these organizations will not be known to, seen by, or in any way benefit the OpenSSL project. SSL/TLS Client. SSL/TLS Client is sample code for a basic web client that fetches a page. The code shown below omits error checking for brevity, but the sample available for download performs the error checking. The sample code will set up BIO to fet a page from www.random.org . The code uses TLS (not SSL) and utilizes the Server Name Indication (SNI) extension from RFC 3546, Transport Layer Security (TLS) Extensions. If you need features beyond the example below, then you should examine s_client.c in the apps/ directory of the OpenSSL distribution. OpenSSL's s_client implements nearly every client side feature available from the library. The code below does not perform hostname verification. OpenSSL prior to 1.1.0 does not perform the check, and you must perform the check yourself. The OpenSSL Change Log for OpenSSL 1.1.0 states you can use -verify_name option, and apps.c offers -verify_hostname . But s_client does not respond to either switch, so its unclear how hostname checking will be implemented or invoked for a client. Note (N.B.) : hostname verification is marked as experimental, so switches, options, and implementations could change. Finally, if you are looking for guidance on which protocols and ciphers you should be using, then see Adam Langley's blog The POODLE bites again. The short version: use only TLS 1.2, use only ephemeral key exchanges, and use only AEAD ciphers (like AES/GCM, Camellia/GCM, ChaCha/Poly1305). Contents. Implementation [ edit ] The code below demonstrates a basic client that uses BIOs and TLS to connect to www.random.org , and fetches 32 bytes of random data through an HTTP request. The sample code is available for download below. Initialization [ edit ] The sample program initializes the OpenSSL library with init_openssl_library . init_openssl_library calls three OpenSSL functions. SSL_library_init performs initialization of libcrypto and libssl , and loads required algorithms. The documents state SSL_library_init always returns 1 , so its a useless return value. SSL_load_error_strings loads error strings from both libcrypto and libssl . There's no need to call ERR_load_crypto_strings . OpenSSL_add_ssl_algorithms is a #define for SSL_library_init , so the call is omitted. OPENSSL_config may (or may not) be needed. Internally, OPENSSL_config is called based on a configuration options via OPENSSL_LOAD_CONF . If you are dynamically loading an engine specified in openssl.cnf , then you might need it so you should call it. That is, don't depend upon the OpenSSL library to call it for you. If you are building a multi-threaded client, you should set the locking callbacks. See threads(3) for details. A detailed treatment of initialization can be found at Library Initialization. Context Setup [ edit ] The sample program uses SSLv23_method to create a context. SSLv23_method specifies that version negotiation will be used. Do not be confused by the name (it does NOT mean that only SSLv2 or SSLv3 will be used). The name is like that for historical reasons, and the function has been renamed to TLS_method in the forthcoming OpenSSL version 1.1.0. Using this method will negotiate the highest protocol version supported by both the server and the client. SSL/TLS versions currently supported by OpenSSL 1.0.2 are SSLv2, SSLv3, TLS1.0, TLS1.1 and TLS1.2. The actual SSL and TLS protocols are further tuned through options. By using SSLv23_method (and removing the unwanted protocol versions with SSL_OP_NO_SSLv2 and SSL_OP_NO_SSLv3 ), then you will effectively use TLS v1.0 and above, including TLS v1.2. You can also use SSL_OP_NO_TLSv1 and SSL_OP_NO_TLSv1_1 if you want to use the TLS 1.2 protocol only. SSL_CTX_new uses the SSLv23_method method to create a new SSL/TLS context object . If you use, for example TLSv1_method , then you will only use TLS v1.0, and if you use TLSv1_1_method then you will only use TLS v1.1. Typically you should always use SSLv23_method in preference to the version specific methods. OpenSSL 1.1.0 improves protocol selection by providing SSL_CTX_set_max_proto_version() and SSL_CTX_set_min_proto_version() . You no longer need to subtract unwanted options with SSL_OP_NO_SSLv2 and SSL_OP_NO_SSLv3 . Also see the SSL_CTX_set_max_proto_version() and SSL_CTX_set_min_proto_version() man pages. Options (1) [ edit ] After creating a context with SSLv23_method and SSL_CTX_new , the context object is tuned with the following functions: SSL_CTX_set_verify SSL_CTX_set_verify_depth SSL_CTX_set_options SSL_CTX_load_verify_locations. SSL_CTX_set_verify sets the SSL_VERIFY_PEER flag and the verify callback. This ensures the chain is verified according to RFC 4158 and Issuer and Subject information can be printed. If you don't want to perform custom processing (such as printing or checking), then don't set the callback. OpenSSL's default checking should be sufficient, so pass NULL to SSL_CTX_set_verify . There is also a SSL_VERIFY_FAIL_IF_NO_PEER_CERT flag, but it is used for servers and has no effect on clients. If you accidentally use SSL_VERIFY_FAIL_IF_NO_PEER_CERT , then you chain will always verify when call SSL_get_verify_result because the flag is ignored for clients (essentially, 0 is passed for the flag which performs no verification). SSL_CTX_set_verify_depth sets the chain depth to 4. Chain depth is fairly useless in practice. SSL_CTX_set_options set the SSL_OP_ALL , SSL_OP_NO_SSLv2 , SSL_OP_NO_SSLv3 , SSL_OP_NO_COMPRESSION options. In essence, it takes all the bug fixes and work arounds for the various servers, removes the SSL protocols (leaving only TLS protocols), and removes compression. The remaining TLS protocols are TLS 1.0, TLS 1.1, and TLS 1.2. SSL_CTX_load_verify_locations loads the certificate chain for the random.org site. The site's CA is Comodo, and the chain includes AddTrust External CA Root , COMODO Certification Authority , and COMODO Extended Validation Secure Server CA . Though the chain is provided, only the single trust anchor is needed for validation. The additional intermediate certs are provided to show how to concatenate and load them. The PEM format means the file is a concatenation of Base64 encoded certificates with the -----BEGIN CERTIFICATE----- prologue (and associated epilogue). If the server sends all certificates required to verify the chain (which it should), then only the AddTrust External CA Root certificate is needed. The options set on the CTX* can be overridden on a per-connection basis by modifying the SSL* using SSL_set_verify , SSL_set_verify_depth and SSL_set_options (and friends). SSL BIO [ edit ] The sample program uses BIOs for input and output. One BIO is used to connect to random.org , and a second BIO is used to print output to stdout . BIO_new_ssl_connect creates a new BIO chain consisting of an SSL BIO (using ctx) followed by a connect BIO. BIO_set_conn_hostname is used to set the hostname and port that will be used by the connection. Options (2) [ edit ] BIO_get_ssl is used to fetch the SSL connection object created by BIO_new_ssl_connect . The connection object inherits from the context object, and can override the settings on the context. The connection object is tuned with the following functions: SSL_set_cipher_list SSL_set_tlsext_host_name. SSL_set_cipher_list sets the cipher list. The list prefers elliptic curves, ephemeral [Diffie-Hellman], AES and SHA. It also removes NULL authentication methods and ciphers; and removes medium-security, low-security and export-grade security ciphers, such as 40-bit RC2. If desired, you could set the options on the context with SSL_CTX_set_cipher_list . SSL_set_tlsext_host_name uses the TLS SNI extension to set the hostname. If you are connecting to a Server Name Indication-aware server (such as Apache with name-based virtual hosts or IIS 8.0), then you will receive the proper certificate during the handshake. Cipher Suites [ edit ] Better, pick 16 or 20 ciphers you want to support and advertise them. Order them so the GCM mode ciphers from TLS 1.2 are listed first, and the AES-SHA ciphers from TLS 1.0 are listed last. Though TLS 1.0 should be avoided, its probably needed for interop because only about half the servers on the internet support TLS 1.2. If you control the server, then it should be offering TLS 1.2 and clients only need to advertise AEAD ciphers like AES/GCM or Camellia/GCM. Keeping the ClientHello small is important for older F5 and IronPort devices. Apparently, the devices used fixed sized buffers and choke on large ClientHello 's. In fact, a "large hello" was the cause of the TLS padding bug on IronPort devices. See TLS padding breaks ironport on the TLS mailing list for details. Connection [ edit ] BIO_do_connect BIO_do_handshake. BIO_do_connect performs the name lookup for the host and standard TCP/IP three way handshake. BIO_do_handshake performs the SSL/TLS handshake. If you set a callback with SSL_CTX_set_verify or SSL_set_verify , then you callback will be invoked for each certificate in the chain used during the execution of the protocol. The Wireshark packet capture to the right shows the TLS handshake with the SNI extension encountered during the execution of BIO_do_handshake . OpenSSL 1.0.1e advertises TLSv1.2 as the highest protocol level in its ClientHello . Callback [ edit ] OpenSSL provides the ability for an application to interact with the chain validation by way of a callback. Normally, most application don't need to use it since the default OpenSSL behavior is usually adequate. In the callback, you can pass the preverify result back to the library (leaving library behavior unchanged), or you can modify the result to account for a specific issue that your software should address (override default behavior). If you don't need to interact with chain validation, then don't set the callback. The example program returned the preverify result to the library and just printed information about the certificate in the chain. It did so by using SSL_CTX_set_verify with SSL_VERIFY_PEER and the verify_callback . The OpenSSL library will pass in the value of its preliminary checking of the certificate through preverify . If you always return 1 regardless of the value of preverify or the actual result of your processing, then SSL_get_verify_result will always return X509_V_OK . That's probably a bad idea for production software. If you don't need to perform special processing on the chain, then you should forgo the verify_callback altogether by supplying NULL to SSL_CTX_set_verify : Verification [ edit ] You use one of two verification procedures, depending on the version of OpenSSL you are using. The change occurs at OpenSSL 1.1.0 because 1.1.0 (and above) implements hostname verification that 1.0.2 (and below) lacked. Painting with a broad brush, minimal checking includes: (1) confirm the server has a certificate, (2) confirm the certificate chain verifies back to a trusted root, and (3) confirm the name of the host matches a hostname listed in the server's certificate. In the end, its probably better to ignore PKI and just use Public Key Pinning (or Certificate Pinning) when a pre-exisiting relationship exists; or use a Perspectives-like system or a Trust-On-First-Use (TOFU) system when there's no a priori relationship (similar to SSH's StrictHostkeyChecking option). See Peter Gutmann's Engineering Security for details of a security diversification strategy (Chapter 4, starting on page 292). You usually don't perform revocation in real time because it essentially creates a denial of service on your application. That is, your app will hang while downloading a multi-megabyte CRL or contacts a missing OCSP responder. For a detailed treatment of problems with PKI and Revocation, see Peter Gutmann's Engineering Security (Chapters 1 and 8). OpenSSL 1.0.2 [ edit ] OpenSSL 1.0.2 and below requires at least three checks. These versions of OpenSSL do not perform hostname validation and the API user must perform it. Server Certificate [ edit ] You must confirm the server provided a certificate. This is because a server might be misconfigured, or the client and server used Anonymous Diffie-Hellman. You do so as follows: If the server has a certificate, then SSL_get_peer_certificate will return a non-NULL value. You don't really need the certificate, so its free 'd immediately. Certificate Chain [ edit ] You must confirm the server's certificate chains back to a trusted root, and all the certificates in the chain are valid. You do so as follows: SSL_get_verify_result returns the result of verifying the chain. See the earlier warning on doing the wrong thing in the verification callback. Certificate Names [ edit ] You must confirm a match between the hostname you contacted and the hostnames listed in the certificate. OpenSSL prior to 1.1.0 does not perform hostname verification, so you will have to perform the checking yourself. The sample code does not offer code at the moment, so you will need to borrow it or implement it. If you want to borrow the code, take a look at libcurl and the verification procedure in source file ssluse.c . Another source is the C/C++ Secure Coding Guide and Section 10.8, Adding Hostname Checking to Certificate Verification. If you implement the code for checking, the sample code shows you how to extract the Common Name (CN) and Subject Alternate Names (SAN) from the certificate in print_cn_name and print_san_name . Note : matching between the hostname (used in BIO_do_connect ) and names in the certificate (from SSL_get_peer_certificate ) must also be validated. For example, a certificate cannot claim to be wildcarded for *.com , *.net , or other Top Level Domains (TLDs). In addition to the TLDs, you also have to country level or ccTLDs, so it can't match *.us , *.cn , *.fed.us , *.公司.cn or similar levels either. Mozilla maintains a list of ccTLDs that are off limits at the Public Suffix List, and there are currently 6136 entries on the list. Program Output [ edit ] After all this musing, here's the lousy output you get when running the program: Session Reuse [ edit ] Session Tickets [ edit ] Session tickets are specified in RFC 5077. You can disable session tickets with SSL_OP_NO_TICKET : 0-RTT [ edit ] 0-RTT is specified in XXX (TODO). 0-RTT allows an application to immediately resume a previous session at the expense of consuming unauthenticated data. You should avoid 0-RTT if possible. In fact, an organization's data security policy may not allow it for some higher data sensitivity levels. Care should be taken if enabling 0-RTT at the client because a number of protections must be enabled at the server. Additionally, some of the protections are required higher up in the stack, outside of the secure socket layer. Below is a list of potential problems from 0-RTT and Anti- Replay and Closing on 0-RTT on the IETF TLS working group mailing list. How To Install OpenSSL on Windows. OpenSSL is a full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is licensed under an Apache-style license. This tutorial will help you to install OpenSSL on Windows operating systems. Step 1 – Download OpenSSL Binary. Download the latest OpenSSL windows installer file from the following download page. Click the below link to visit OpenSSL download page: Step 2 – Run OpenSSL Installer. Now run the OpenSSL installer on your system. The OpenSSL required Microsoft Visual C++ to be installed on your system. If your system doesn’t have Microsoft Visual C++ installed, the installer will show your message like: Click Yes to download and install required Microsoft Visual C++ package on your system. Then again run the OpenSSL installer and follow the wizard. Step 3 – Setup Environment Variables. Now set the environment variables to function OpenSSL properly on your system. You are required to set OPENSSL_CONF and Path environment variables. Use the following commands to set environment for current session only: Set Variables Permanently – You can also se the OPENSSL_CONF and Path environment variables in system permanently. To set the environment variable follow: Press Windows + R keys together to open run window, Then type “ sysdm.cpl ” in the Run dialog box and hit Enter. Alternatively, you can open Command Prompt and type the same command to open System Properties. Go to “Advanced” tab and click on “Environment variables”. Set OPENSSL_CONF Variable: Set Path Variable: Step 4 – Run OpenSSL Binary. Open a command prompt on your system and type openssl to open OpenSSL prompt. After that type version to get the installed OpenSSL version on your system. Openssl audit file download. Shining Light Productions uses PayPal for all donations because it is fast, easy, and secure. A minimum $10.00 (US) donation is recommended for individuals. Businesses integrating Win32/Win64 OpenSSL into products must pay a minimum of $225 to help cover the cost of bandwidth. Businesses can alternatively pay smaller amounts on a regular basis (sponsorship). Businesses: A $25/month recurring donation will get a logo and preferred placement on this page. To make a one-time donation to Shining Light Productions, click the button below. Clicking the button will take you to PayPal's website: To make a recurring donation (sponsorship) to Shining Light Productions, click the button below. Clicking the button will take you to PayPal's website: The downside is that, since you ARE e-mailing a real developer, you need to realize this and respect the developer, no matter what mood he/she is in. A developer's time is extremely valuable and a developer may not be in the most pleasant mood all the time. You can quickly get on any developer's nerves by e-mailing multiple times, mis-spelling, mis-communicating, need to be told where your "Start" button is, or you manage to catch the developer at the end of an eight hour debugging session (or worse, the frantic portion of a release cycle). Shining Light Productions aims to be polite, but does not tolerate someone intentionally wasting a developer's time. In addition to being concise, organized, and communicating clearly, below are some guidelines to follow that make the Shining Light Productions developer's job that much easier to formulate a good response in a timely manner. Bug Reports: To report a bug in the Win32/Win64 OpenSSL Installation Project, send an e-mail to Shining Light Productions describing your system setup, pertinent configuration information, what your intended goal is, and provide all related information (no matter how irrelevant it seems) to the bug. Feature Requests: To suggest a feature, send an e-mail to Shining Light Productions describing the feature in as much detail as possible. Try to think of ways to make it benefit other users and thus make it a powerful, generic feature. How to install OpenSSL in windows 10? I have a question about how and what is the version of OpenSSl that I must install in Windows to later create certificates. Install a one version (openssl-1.0.2d-fips-2.0.10) found in SourceForge but it does not generate the files correctly. There is also the official website https://www.openssl.org, but I do not know how to install it and how, so that when it comes to generating the keys and .pem file, it works. Generate some environment variables that point to the folder where I unzipped the downloaded, I do not know if it is the correct way. 9 Answers 9. I also wanted to create OPEN SSL for Windows 10. An easy way of getting it done without running into a risk of installing unknown software from 3rd party websites and risking entries of viruses, is by using the openssl.exe that comes inside your Git for Windows installation. In my case, I found the open SSL in the following location of Git for Windows Installation. If you also want instructions on how to use OPENSSL to generate and use Certificates. Here is a write-up on my blog. The step by step instructions first explains how to use Microsoft Windows Default Tool and also OPEN SSL and explains the difference between them. If you have chocolatey installed you can install openssl via a single command i.e. In case you have Git installed , you can open the Git Bash ( shift pressed + right click in the folder -> Git Bash Here ) and use openssl command right in the Bash. You can install openssl using one single line if you have chocolatey installed. open command in admin mode type choco install openssl. Either set the openssl present in Git as your default openssl and include that into your path in environmental variables (quick way) Install the system-specific openssl from this link. set the following variable : set OPENSSL_CONF=LOCATION_OF_SSL_INSTALL\bin\openssl.cfg Update the path : set Path=. Other Values here. ;LOCATION_OF_SSL_INSTALL\bin. I recently needed to document how to get a version of it installed, so I've copied my steps here, as the other answers were using different sources from what I recommend, which is Cygwin. I like Cygwin because it is well maintained and provides a wealth of other utilities for Windows. Cygwin also allows you to easily update the versions as needed when vulnerabilities are fixed. Please update your version of OpenSSL often! Open a Windows Command prompt and check to see if you have OpenSSL installed by entering: openssl version. If you get an error message that the command is NOT recognized, then install OpenSSL by referring to Cygwin following the summary steps below: Basically, download and run the Cygwin Windows Setup App to install and to update as needed the OpenSSL application: OpenSSL. All files are in their original form. LO4D.com does not modify or wrap any file with download managers, custom installers or third party adware. This download is of OpenSSL (32-bit) and was signed by OpenSSL Win32 Installer Team with an on-disk file size of 57831317 Bytes. It's distributed as Win32OpenSSL-1_1_1k.exe and Win64OpenSSL-1_1_1j.exe. About OpenSSL. OpenSSL 1.1.1k is the gold standard for online encryption and with this package, developers can implement SSL and TLS encryption within their applications. As the Internet has turned towards more security and encryption, it's absolutely important to take encryption into consideration when performing any types of tasks or data transfer online. With OpenSSL, you've got a reliable and community-supported approach to data encryption. This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system/platform without restrictions. OpenSSL is available to all software users as a free download for Windows. Is OpenSSL safe to download? We tested the file Win32OpenSSL-1_1_1k.exe with 23 antivirus programs and it turned out 100% clean. It's good practice to test any downloads from the Internet with trustworthy antivirus software. Does OpenSSL work on my version of Windows? Older versions of Windows often have trouble running modern software and thus OpenSSL may run into errors if you're running something like Windows XP. Conversely, much older software that hasn't been updated in years may run into errors while running on newer operating systems like Windows 10. You can always try running older programs in compatibility mode . Officially supported operating systems include Windows 10, Windows 8, Windows 7, Windows Vista and Windows XP. What versions of OpenSSL are available? The current version of OpenSSL is 1.1.1k and is the latest version since we last checked. This is the full offline installer setup file for PC. This site has hosted other versions of it in the past such as 1.1.1j, 1.1.1i, 1.0.2q and 1.0.0a. At the moment, only the latest version is available. Openssl audit file download. Shining Light Productions uses PayPal for all donations because it is fast, easy, and secure. A minimum $10.00 (US) donation is recommended for individuals. Businesses integrating Win32/Win64 OpenSSL into products must pay a minimum of $225 to help cover the cost of bandwidth. Businesses can alternatively pay smaller amounts on a regular basis (sponsorship). Businesses: A $25/month recurring donation will get a logo and preferred placement on this page. To make a one-time donation to Shining Light Productions, click the button below. Clicking the button will take you to PayPal's website: To make a recurring donation (sponsorship) to Shining Light Productions, click the button below. Clicking the button will take you to PayPal's website: The downside is that, since you ARE e-mailing a real developer, you need to realize this and respect the developer, no matter what mood he/she is in. A developer's time is extremely valuable and a developer may not be in the most pleasant mood all the time. You can quickly get on any developer's nerves by e-mailing multiple times, mis-spelling, mis-communicating, need to be told where your "Start" button is, or you manage to catch the developer at the end of an eight hour debugging session (or worse, the frantic portion of a release cycle). Shining Light Productions aims to be polite, but does not tolerate someone intentionally wasting a developer's time. In addition to being concise, organized, and communicating clearly, below are some guidelines to follow that make the Shining Light Productions developer's job that much easier to formulate a good response in a timely manner. Bug Reports: To report a bug in the Win32/Win64 OpenSSL Installation Project, send an e-mail to Shining Light Productions describing your system setup, pertinent configuration information, what your intended goal is, and provide all related information (no matter how irrelevant it seems) to the bug. Feature Requests: To suggest a feature, send an e-mail to Shining Light Productions describing the feature in as much detail as possible. Try to think of ways to make it benefit other users and thus make it a powerful, generic feature.