Symmetric Cryptographic Intel FPGA Hard IP User Guide

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ID 714305
Date 12/19/2022
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Document Table of Contents
Document Table of Contents x
1. Introduction 2. Interface Overview 3. Parameters 4. Designing with the IP Core 5. Block Description 6. Cryptographic IP Data Profiles 7. Configuration Registers 8. Design Example 9. Symmetric Cryptographic Intel FPGA Hard IP User Guide Archives 10. Document Revision History for the Symmetric Cryptographic Intel FPGA Hard IP User Guide
1. Introduction x
1.1. Terminology 1.2. IP Core Overview 1.3. Release Information 1.4. Device Family Support 1.5. Resource Utilization
1.2. IP Core Overview x
1.2.1. IP Core Applications
2. Interface Overview x
2.1. Clock Signals 2.2. Reset Signals 2.3. AXI-ST Interface 2.4. AXI-Lite Interface
4. Designing with the IP Core x
4.1. Installing and Licensing Intel® FPGA IP Cores 4.2. Specifying the IP Core Parameters and Options 4.3. Generated File Structure 4.4. Symmetric Cryptographic IP Core Flow 4.5. Dynamically Disabling SM4 Capability 4.6. Error Handling 4.7. Error Reporting 4.8. Resetting the IP Core 4.9. Channel Definition and Allocation 4.10. Byte Ordering 4.11. AXI-ST Single Packet Mode 4.12. AXI-ST Multiple Packet Mode
4.1. Installing and Licensing Intel® FPGA IP Cores x
4.1.1. Intel® FPGA IP Evaluation Mode
4.6. Error Handling x
4.6.1. Detected Error Handling 4.6.2. Key RAM ECC Error Handling
5. Block Description x
5.1. Reset Sequencer 5.2. AXI-ST Ready Latency 5.3. AXI Adapter 5.4. Integrity Check Value Comparison 5.5. GCM Padding and Depadding
5.3. AXI Adapter x
5.3.1. MAC Packing 5.3.2. Data Last Indicator 5.3.3. Stream and Channel ID Buffering 5.3.4. TKEEP and LAST_SEGMENT Signals Generation 5.3.5. MAC Dropping on Decryption
5.5. GCM Padding and Depadding x
5.5.1. GCM Padding 5.5.2. GCM Depadding
6. Cryptographic IP Data Profiles x
6.1. MAC Security Profile (MACsec) 6.2. IP Security Profile (IPsec) 6.3. Generic GCM Profile (GCM) 6.4. Generic XTS Profile (XTS)
6.1. MAC Security Profile (MACsec) x
6.1.1. MACsec Flow 6.1.2. AXI-ST Interface Using MAC Security (MACsec) Profile Pattern
6.2. IP Security Profile (IPsec) x
6.2.1. AXI-ST Interface Using IP Security (IPsec) Profile Pattern
6.3. Generic GCM Profile (GCM) x
6.3.1. AXI- ST Interface Using Generic GCM Profile Pattern
6.4. Generic XTS Profile (XTS) x
6.4.1. AXI-ST Interface Using Generic XTS Profile Pattern
7. Configuration Registers x
7.1. Cryptographic Primary Control Register 7.2. Cryptographic Secondary Control Register 7.3. Cryptographic Primary Status Register 7.4. Cryptographic Error Status Register 7.5. Cryptographic Error Control Register 7.6. Cryptographic Packet Error Control 1 Register 7.7. Cryptographic Packet Error Control 2 Register 7.8. Cryptographic Error Code Control 1 Register 7.9. Cryptographic Error Code Control 2 Register 7.10. Cryptographic Error Code Internal Control Register 7.11. Cryptographic Internal Error Control Register 7.12. Cryptographic First Error Log Register 7.13. Cryptographic Packet Error Log 1 Register 7.14. Cryptographic Packet Error Log 2 Register 7.15. Cryptographic Internal Error Log Register 7.16. Cryptographic Wall Clock LSB Register 7.17. Cryptographic Wall Clock MSB Register 7.18. Ternary Control Register
8. Design Example x
8.1. Functional Description 8.2. Crypto VSIP Top Block Descriptions 8.3. Test Configurations 8.4. Software Requirements 8.5. Simulation Requirements 8.6. Steps to Generate the Design Example 8.7. Running Simulation Tests 8.8. Running Hardware Tests
8.2. Crypto VSIP Top Block Descriptions x
8.2.1. Clock and Reset 8.2.2. Host Interface
8.7. Running Simulation Tests x
8.7.1. Steps to Simulate the Design Example
8.8. Running Hardware Tests x
8.8.1. Supported Boards 8.8.2. Steps to Compile the Design Example for Hardware 8.8.3. Steps to Run the Design Example on Hardware
1. Introduction
2. Interface Overview
3. Parameters
4. Designing with the IP Core
5. Block Description
6. Cryptographic IP Data Profiles
7. Configuration Registers
8. Design Example
9. Symmetric Cryptographic Intel FPGA Hard IP User Guide Archives
10. Document Revision History for the Symmetric Cryptographic Intel FPGA Hard IP User Guide

1.2.1. IP Core Applications

You can utilize the IP core in various applications dependent on the selected profile. Each profile enables you to process data using specific cryptographic settings.
The Symmetric Cryptographic IP core supports the following profiles:
  • MACsec profile
  • IPsec profile
  • Generic GCM profile
  • Generic XTS profile

The following diagrams depicts a few applications utilizing various profiles.

Figure 1. Example of a Network Storage and Confidential Computing Application

In this use case, a packet is received through the left-side HSSI subsystem, where a general packet classifier classifies the packet. If the packet is a key management packet, it is routed to the HPS. The key management packet then goes through a DDR lookup operation by using EML (Exact Match Lookup) IP for the key allocation, deletion, or modification process.

However, if the packet received from the left-side HSSI subsystem is a regular data packet, it is routed to a security protocol IP such as MACsec/IPsec IP for processing. Packets that are processed by MACsec/IPsec IP can then use the Symmetric Cryptographic Intel FPGA Hard IP for packet encryption/decryption. The processed packets are then sent out to another port through the right-side HSSI subsystem.

Figure 2. Example of a Hybrid Security ApplicationThe example depicts the usage of a GCM or XTS profile.

This example shows how Symmetric Cryptographic Intel FPGA Hard IP can be used as a Lookaside Crypto Accelerator from the host. A multichannel DMA is used to fetch the traffic from the host through the PCIe Subsystem.

The user data is then processed either through network storage or through confidential computing user logic, where it is encrypted or decrypted through Symmetric Cryptographic Intel FPGA Hard IP. The processed data can then be sent to the host through DMA.

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