---
title: "PKCS#11 [5.4.2891]"
slug: "pkcs-11-5-4-2891"
updated: 2026-08-19T08:30:25Z
published: 2026-08-19T08:30:25Z
canonical: "support.fortanix.com/pkcs-11-5-4-2891"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.fortanix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PKCS#11 [5.4.2891]

## Linux 64-bit

### Download

[DEB package](https://download.fortanix.com/clients/5.4.2891/fortanix-pkcs11-5.4.2891-amd64.deb) **SHA256 sum:**

```plaintext
591faf3b7d538cf597ebe812b77deff9946cd2333ea21ebe86e9a44141779475
```

[RPM package](https://download.fortanix.com/clients/5.4.2891/fortanix-pkcs11-5.4.2891-0.x86_64.rpm) **SHA256 sum:**

```plaintext
63638ac41bc394643732f73495a216bc33b452c4bc5828576faf5c36d6144cf0
```

[Library (.so file)](https://download.fortanix.com/clients/5.4.2891/fortanix_pkcs11_5.4.2891.so) **SHA256 sum:**

```plaintext
a205da3608bf1883d6303f255aa01ec05a61df4d72c989740dbf3491ae7ab1f1
```

### Installation for DEB

The RPM and DEB installer copies the Fortanix Data Security Manager (DSM) PKCS#11 shared object file (library) to `/opt/fortanix/pkcs11/fortanix_pkcs11.so` . One can also download the `.so` file and use it directly.

*For more information, refer to* [*Clients: PKCS#11 Library*](/v1/docs/fortanix-dsm-clients-pkcs11-library)*.*

### Installation for DEB from Public Repo

#### Steps to Download the DEB Package

1. Add the following line to the file `/etc/apt/sources.list"`:

```plaintext
deb https://download.fortanix.com/linux/apt focal main
```
2. Download [*https://download.fortanix.com/linux/apt/fortanix.gpg*](https://download.fortanix.com/linux/apt/fortanix.gpg).
3. After downloading the file `fortanix.gpg`, run the following command to add the file to a trusted source:

```plaintext
sudo apt-key add <directory-path>/fortanix.gpg
```

Where, `directory-path` is the folder where you downloaded the file.
4. Run the following commands to get the latest package from the repo:

```plaintext
sudo apt update
```
5. Run the following command to install the package:

```plaintext
sudo apt install fortanix-pkcs11
```

#### Steps to Download the RPM Package

1. Run the following command to go to the `yum.repos.d` directory:

```plaintext
cd /etc/yum.repos.d/
```
2. Create the file `em-agent.repo` in the folder from *Step 1* and add the following contents to it, then save:

```plaintext
[em-agent]
name=EM Agent  - $basearch
baseurl=https://download.fortanix.com/linux/yum/el7/x86_64
enabled=1
gpgkey=https://download.fortanix.com/linux/yum/fortanix.pub
gpgcheck=1
```
3. Run the following commands to get the latest package from the repo:

```plaintext
sudo yum update
```
4. Run the following command to install the package:

```plaintext
sudo yum install fortanix-pkcs11
```

## Windows 64-bit

### Download

[Installer](https://download.fortanix.com/clients/5.4.2891/FortanixKmsClient-5.4.2891.msi) **SHA256 sum:**

```plaintext
cf7e54998c3d3003f1a3970546a9de3c71710be628aa87dbba46db9873d47690
```

### Installation

The Windows installer installs the PKCS#11 library, as well as the Fortanix CNG and EKM providers. The default installation location of the PKCS#11 library is `C:\Program Files\Fortanix\KmsClient\FortanixKmsPkcs11.dll`.