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LEAD-Compiled OpenSSL Binaries

Click the link to download the zip file LEAD-OpenSSL-Binaries.zip.

The zip file contains the 32/64-bit versions of the OpenSSL 3.0, 1.10, and 1.0.2 libraries, compiled and digitally signed by LEAD Technologies, Inc.

DICOM Support

LEADTOOLS Medical SDK OpenSSL Version
Version 22 OpenSSL 3.0 (for Leadtools.Dicom.dll 22.0.0.34 or later) or 1.0.2 (for Leadtools.Dicom.dll 22.0.0.33 and earlier) binaries required to implement the Transport Layer Security (TLS) protocol required for DICOM communications. At run time a prompt indicates the OpenSSL version for the current build.
Version 21 OpenSSL 1.0.2 binaries required to implement the Transport Layer Security (TLS) protocol required for DICOM communications.

OpenSSL.org provides source code, but no binaries.

In the current LEADTOOLS installations, the OpenSSL binaries are not included, but are available as a separate download.

For Leadtools.Dicom.dll 22.0.0.34 or later, copy the OpenSSL 3.0 binaries as follows:

Framework Architecture Binaries Destination Path
.NET 32-bit win32\libcrypto-3.dll
win32\libssl-3.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\Win32
C API 32-bit win32\libcrypto-3.dll
win32\libssl-3.dll
%LEADTOOLS_SETUP%\Bin\CDLL\Win32
.NET 64-bit x64\libcrypto-3.dll
x64\libssl-3.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\x64
C API 64-bit x64\libcrypto-3.dll
x64\libssl-3.dll
%LEADTOOLS_SETUP%\Bin\CDLL\x64

For Leadtools.Dicom.dll 22.0.0.33 and earlier, copy the OpenSSL 1.02 binaries as follows:

Framework Architecture Binaries Destination Path
.NET 32-bit win32\libeay32.dll
win32\ssleay32.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\Win32
C API 32-bit win32\libeay32.dll
win32\ssleay32.dll
%LEADTOOLS_SETUP%\Bin\CDLL\Win32
.NET 64-bit x64\libeay32.dll
x64\ssleay32.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\x64
C API 64-bit x64\libeay32.dll
x64\ssleay32.dll
%LEADTOOLS_SETUP%\Bin\CDLL\x64

Where %LEADTOOLS_SETUP% is your LEADTOOLS setup folder. Such as C:\LEADTOOLS22 for LEADTOOLS v22.

Note that the 32- and 64-bit DLLs use the same file names. This follows the OpenSSL naming convention.

PDF Support

The LEADTOOLS PDF toolkit requires OpenSSL 1.1.0 to implement optional digital signature reading and writing features.

Previously, LEADTOOLS compiled the source code and included the binaries in the installation setup. In the current installation, the binaries are no longer included, but are available as a separate download.

For a default installation of LEADTOOLS, copy the binaries as follows:

Framework Architecture Binaries Destination Path
.NET 32-bit win32\libcrypto-1_1.dll
win32\libssl-1_1.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\Win32
C API 32-bit win32\libcrypto-1_1.dll
win32\libssl-1_1.dll
%LEADTOOLS_SETUP%\Bin\CDLL\Win32
.NET 64-bit x64\libcrypto-1_1-x64.dll
x64\libssl-1_1-x64.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\x64
C API 64-bit x64\libcrypto-1_1-x64.dll
x64\libssl-1_1-x64.dll
%LEADTOOLS_SETUP%\Bin\CDLL\x64

Where %LEADTOOLS_SETUP% is your LEADTOOLS setup folder. Such as C:\LEADTOOLS22 for LEADTOOLS v22.

Note that the 32- and 64-bit DLLs use different file names. This follows the OpenSSL 1.1.0 and later naming convention.

Help Version 22.0.2023.7.18
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Imaging, Medical, and Document
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.