7.4.2 Embedded Characteristics

  • Supports Single Data Encryption Standard (DES) and Triple Data Encryption Standard (TDES)
  • Compliant with FIPS Publication 46-3, Data Encryption Standard (DES)
  • 64-bit Cryptographic Key for TDES
  • Two-key or Three-key Algorithms for TDES
  • 18 Clock Cycles Encryption/Decryption Processing Time for DES
  • 50 Clock Cycles Encryption/Decryption Processing Time for TDES
  • Supports eXtended Tiny Encryption Algorithm (XTEA)
  • 128-bit key for XTEA and Programmable Round Number up to 64
  • Supports the Four Standard Modes of Operation specified in the FIPS Publication 81, DES Modes of Operation
    • Electronic Code Book (ECB)
    • Cipher Block Chaining (CBC)
    • Cipher Feedback (CFB)
    • Output Feedback (OFB)
  • 8-, 16-, 32- and 64-bit Data Sizes Possible in CFB Mode
  • Last Output Data Mode Allowing Optimized Message (Data) Authentication Code (MAC) Generation
  • Abnormal Software Access Reports and Automatic Lock
  • Abnormal Internal Sequence Detection and Automatic Lock
  • Register Write Protection
  • Temporary Secured Storage for Keys
  • Private Key Bus Access to the Private Key Internal Register Not Readable from any Peripheral or Software
  • Connection to DMA Optimizes Data Transfers for all Operating Modes