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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:\LEADTOOLS23 for LEADTOOLS v23.

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