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DES/3DES Encryption/Decryption Cores
CS5010-40
Virtual Components for the Converging World
TM
The CS5010-CS5040 DES/3DES Encryption/Decryption cores are designed to achieve data privacy in digital broadband, wireless, and multimedia systems. These high performance application specific silicon cores support the Data Encryption Standard (also referred as Data Encryption Algorithm) as described in the NIST Federal Information Processing Standard 46-3. They offer an efficient means of providing both DES and Triple DES encryption and decryption in one core in order to rapidly construct complete security solutions. The DES/3DES family of cores are available in both ASIC and programmable logic versions that have been hand crafted by Amphion to deliver high performance while minimizing power consumption and silicon area.
Patient Room Camera
Nurse Station PC
MPEG-2 Encoder
MPEG-2 Decoder
Security Gateway High Speed DES/3DES Encoder 10/100-Base T-Hub
Security Nurse Gateway Station HighPC Speed DES/3DES Decoder
Figure 1: Example of a Secure Audio/Video Based Remote Patient Monitoring System Using DES/3DES
ENCRYPTION CORE FEATURES
Table 1: CS5010-40 Features at a Glance CS5010 Ultra Compact
Fully compliant with DES NIST FIPS 46-3 DES and Triple DES Support 32-bit I/O 128-bit I/O 28-bit Key Input Port 56-bit Key Input Port EDE2 and EDE3 Triple DES (112- or 168-bit key length)
CS5020 Compact * * *
CS5030 High Speed * * *
CS5040 Ultra HIgh Speed * *
* * *
* * * * * * * * *
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Amphion continues to expand its family of application-specific cores See http://www.amphion.com for a current list of products
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CS5010-40
DES/3DES Encryption/Decryption Cores
APPLICATIONS
Electronic financial transactions - eCommerce - Banking - Securities exchange - Point-of-Sale Secure corporate communications - Storage Area Networks (SAN) - Virtual Private Networks (VPN) - Video conferencing - Voice services
Personal mobile communications - Video phones - PDA - Point-to-Point Wireless - Wearable computers Secure environments - Satellite communications - Surveillance systems - Network appliances
DATA ENCRYPTION ALGORITHM
The Data Encryption Algorithm is an iterated block cipher with a Feistel structure that encrypts and decrypts data in 64bit data blocks using a 56-bit key. The algorithm consists of: * * * An initial permutation of the input data Sixteen rounds of the same process - the DES round A final inverse initial permutation of the data
Figure 2 represents a block diagram of the Data Encryption Algorithm. A DES round transforms the data using permutations, additions and non-linear substitutions. The DES key schedule consists of three parts: 1. 2. Key Permutation - to remove the eight redundant parity bits within the 64-bit key, and to permute the key Scheduled Circular Shifting - the permuted key is circularly shifted according to a schedule by either 1 or 2 bits, to the left or right. Key Compression - the 56-bit shift key is compressed using another permutation, or rearrangement, to obtain a 48-bit subkey.
3.
The Triple Data Encryption Algorithm offers increased security by extending the DES key to 112 or 168 bits, thus greatly reducing the effectiveness of exhaustive key searches or "brute-force" attacks. Triple DES is simply three successive DES operations in the sequence of encrypt-decrypt-encrypt, or decrypt-encrypt-decrypt if decrypting data.
Figure 2: DES Algorithm Structure
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FUNCTIONAL DESCRIPTION
The Amphion series of DES/3DES cores offer a complete solution to maintaining legacy DES functionality for modern data encryption needs, offering a simple interface, no internal or external memory usage, no external keyspace processing, and a highly efficient design offering unparalleled performance. The CS5010 Ultra Compact DES/3DES and the CS5020 Compact DES/3DES Cores are designed to offer an efficient yet high performance means of both DES and Triple DES encryption/decryption, with the emphasis on reduced resource usage. The CS5030 High Speed DES/3DES Core offers an increased data throughput in comparison to the Compact Cores, while still achieving a highly efficient hardware implementation. The CS5040 Ultra High Speed DES/3DES Core is designed to provide a high performance solution while still achieving a relatively low resource usage. The Ultra Compact DES/3DES Core is capable of all DES standard modes of operation. The use of these added modes of operation on Compact, High Speed and Ultra High Speed DES/3DES Cores is subject to conditions. For example, it is impractical to use a fully pipelined DES core to perform CBC mode, as the data throughput of the hardware would have to be substantially reduced in order to support the feedback XOR operation between output and input of the DES core. All versions of the Amphion DES/3DES cores follow the block diagram shown in Figure 3. The DES/3DES cores are excellent complements to other Amphion cores. For instance they can be combined with the CS6650 MPEG-2 Decoder to rapidly construct a secure patient monitoring system, and they can be combined with the CS4191 ADPCM codec to achieve secure, high speed, high channel-count speech processing in Voice-over-Packet (VoP) systems. The Amphion encryption/decryption cores are also an excellent choice for VPN security ICs incorporated into broadband switches, routers, firewalls and remote access concentrators. Likewise, the cores are an ideal fit for the Secure Socket Layer (SSL) channel ICs used in Web servers, WAP gateways and other access applications requiring a high number of parallel SSL channels to carry out eCommerce.
Control Logic
Plaintext/ Ciphertext
Input Buffer
DES Round Transformations
Output Buffer
Ciphertext/ Plaintext
Key
Key Buffer
Key Scheduler
Figure 3: Block Diagram of DES/3DES Cores
Optimized for
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CS5010-40
DES/3DES Encryption/Decryption Cores
CS5210-40 SYMBOL AND PIN DESCRIPTION
Table 2 describes the input and output ports (shown graphically in Figure 4) of the CS5010-40 series of DES/3DES encryption cores. Unless otherwise stated, all signals are active high and bit(0) is the least significant bit.
D DADDR DLOAD KEY KADDR KLOAD MODE TRIPLE EDE CLK RST
Figure 4: CS5010-40 DES/3DES Symbol
DSTAT
DES/3DES
QSTRB QADDR Q
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Table 2: CS5010-40 DES/3DES Cores Interface Signal Definitions Signal
D DADDR
I/O
I I
Width (Bits)
32 (64 Ultra High Speed) 1 (Ultra Compact) 2 (Compact) 3 (High Speed) 0 (Ultra High Speed) 1 28 (56 Ultra High Speed) 2 1 1 1 1 1 1 1
Description
Input Plaintext/Ciphertext data Input Plaintext/Ciphertext data address, 0: the lowest 32-bit word
DLOAD KEY KADDR KLOAD MODE TRIPLE EDE CLK RST DSTAT
I I I I I I I I I O
Load input Plaintext/Ciphertext enable Encryption key data Encryption key address, 0: the lowest 28-bit word Load encryption key Encryption/Decryption mode select, 0: Encryption. 1: Decryption DES/3DES mode select, 0: DES, 1:3DES Triple DES key selection mode, 0:EDE2, 1: EDE3 System clock, rising edge active Asynchronous reset Input port status This signal will be Asserted when the core is ready for loading the highest word of the next 64-bit data block, or the highest word of the multiple input DES blocks available in the Compact or High Speed cores. The lower words can be loaded at anytime in the period when DSTAT is LOW depending on the key-size selection Output strobe indicating the Plaintext/Ciphertext word Q is valid Output Plaintext/Ciphertext data address, 0: the lowest 32-bit word
QSTRB QADDR
O O
1 1 (Ultra Compact) 2 (Compact) 3 (High Speed) 0 (Ultra High Speed) 32 (64 Ultra High Speed)
Q
O
Output Plaintext/Ciphertext data
Optimized for
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CS5010-40
DES/3DES Encryption/Decryption Cores
AVAILABILITY AND IMPLEMENTATION INFORMATION
Hardware accelerated 3DES technology is governed internationally by export regulations. Amphion 3DES cores listed in this datasheet are available within the UK. License to export to the following countries is pending: Austria Denmark Hungary New Zealand Spain Australia Belgium Canada Czech Republic Finland France Germany Greece Ireland Italy Japan Luxembourg The Netherlands Norway Poland Portugal Sweden Switzerland United Kingdom United States
For delivery to other destinations, please contact Amphion. Approval is subject to applicable export regulations. Licensees of the Amphion 3DES cores are responsible for complying with applicable requirements for the re-export of electronics containing 3DES technology.
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PROGRAMMABLE LOGIC CORES
For ASIC prototyping or for projects requiring the fast time-to-market of a programmable logic solution, Amphion programmable logic core offer the silicon-aware performance tuning found in all Amphion products, combined with the rapid design times offered by today's leading programmable logic solutions.
Table 3: CS5010-40 DES/3DES Programmable Logic Cores using Actel Axcelerator
PRODUCT ID SILICON VENDOR DEVICE MAX. FREQUENCY (MHz) DATA RATE (MBits/Sec) DES 3DES UTILIZATION R-CELLS C-CELLS DEVICE UTIL AVAILABILITY
CS5010RR CS5020RR CS5030RR CS5040RR
Actel Actel Actel Actel
AX500 AX500 AX500 AX1000
71 63 57 56
284 504 912 3584
94 168 304 1194
545 735 1213 4162
1151 1715 3116 7179
22% 31% 54% 63%
Now Now Now Now
Cycles per operation for the CS5010-40 cores are 16, 8, 4 and 1 respectively Note: Speed grade = -3
Table 4: CS5010-40 DES/3DES Programmable Logic Cores using Actel ProASICPlus
PRODUCT ID SILICON VENDOR DEVICE MAX. FREQUENCY (MHz) DATA RATE (MBits/Sec) DES 3DES UTILIZATION (Tiles) Combinatorial Sequential DEVICE UTIL AVAILABILITY
CS5010RQ CS5020RQ CS5030RQ CS5040RQ
Actel Actel Actel Actel
APA150 APA150 APA300 APA600
27 27 21 26
108 216 336 1664
36 72 112 554
1923 2830 5253 11331
510 712 1192 3926
40% 58% 79% 71%
Now Now Now Now
Cycles per operation for the CS5010-40 cores are 16, 8, 4 and 1 respectively
Optimized for
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CS5010-40
ABOUT AMPHION
DES/3DES Encryption/Decryption Cores
CORPORATE HEADQUARTERS Amphion Semiconductor Ltd 50 Malone Road Belfast BT9 5BS Northern Ireland, UK Tel: Fax: +44.28.9050.4000 +44.28.9050.4001
TM
Virtual Components for the Converging World
Amphion (formerly Integrated Silicon Systems) is the leading supplier of speech coding, video/ image processing and channel coding application specific silicon cores for system-on-a-chip (SoC) solutions in the broadband, wireless, and mulitmedia markets Web: www.amphion.com Email: info@amphion.com
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SALES AGENTS
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(c) 2002 Amphion Semiconductor Ltd. All rights reserved. Amphion, the Amphion logo and "Virtual Components for the Converging World" are trademarks of Amphion Semiconductor Ltd. All others are the property of their respective owners. Optimized for 8 10/02 Publication #: DS5010/40ACT v1.2

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