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Home -> Our Services -> Cryptography -> DES

DES Encryption / Decryption

  • Technology Overview

Data Encryption Standard (DES) is a symmetric key algorithm. DES is designed to encrypt and decrypt blocks of data (multiple of 64 bits) using a 64-bit private key. Its security is based on the secure private key. Messages are encrypted and decrypted using the same private key.

  • Product Features

    • Compatible with "Data Encryption Standard (DES)", FIPS PUB46-3, Federal Information Processing Standards Publication, Reaffirmed, 1999 October 25.
    • Supports ECB and CBC modes.
    • APIs for key schedule, encryption and decryption.
    • Flexible interface with 'C' callability.
    • Easily portable to other architectures.
    • The code is interruptible and fully re-entrant. It can be used in systems with multi-threaded software architecture.

  • Processor

    • ARM-7TDMI with 8KB unified cache and 64 MHz clock

  • Performance

    • Memory Requirements
    ROM(Bytes)RAM(Bytes)
    Code Table Data Stack
    3948 4704 128 88

    • Timings
    Key Generation (bits)
    		Encryption (usec)
    		Decryption (usec)
    44 - 64 48 - 72 44 - 60