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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 latest OpenSSL 1.0.2 and 1.1.0 libraries, compiled and digitally signed by LEAD Technologies, Inc.

DICOM Support

The LEADTOOLS medical toolkits use OpenSSL 1.0.2 to implement the Transport Layer Security (TLS) protocol required for DICOM communications. OpenSSL provides source code, but no binaries.

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:

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

Where %LEADTOOLS_SETUP% is your LEADTOOLS setup folder. Such as C:\LEADTOOLS 20 for LEADTOOLS v20.

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:

Architecture Binaries Destination Path
32-bit win32\libcrypto-1_1.dll
win32\libssl-1_1.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\Win32
32-bit win32\libcrypto-1_1.dll
win32\libssl-1_1.dll
%LEADTOOLS_SETUP%\Bin\CDLL\Win32
64-bit x64\libcrypto-1_1-x64.dll
x64\libssl-1_1-x64.dll
%LEADTOOLS_SETUP%\Bin\Dotnet4\x64
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:\LEADTOOLS 20 for LEADTOOLS v20.

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

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