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DxRNG - Discretix RNG Cryptographic Engines

 

Discretix Cryptographic Engines

Discretix cryptographic engines are widely deployed in leading system-on-chip solutions. Discretix provides highquality, ready-to-use cryptographic engines, to support variety of applications. Included in Discretix’s family of cryptographic engines are symmetric ciphers, asymmetric ciphers, Hash and random number generators.

DxRNG - General Description

The DxRNG provides a full implementation including true and pseudo random number generation. Random numbers are primarily used in cipher key generation for secure data communications, secure data storage and timers in communication protocols. The DxRNG includes two RNG cores. The TRNG core provides True Random Number Generation, with continuous auto correlation self-test of bit stream. The TRNG core eliminates noise generation and checks for random bit stream bias. The PRNG core provides generation of pseudorandom bit stream based on a given seed. The seed can be provided either directly from the TRNG core or by the host processor through a register interface. The two RNG cores (TRNG and PRNG) are easily integrated together to provide a complete RNG solution, or can be used as stand alone modules.

The DxRNG engine has two main interfaces: A CPU interface for configuration and random bits collection, and an interface to a source of entropy. Once random bits are read, a new random set of bits is generated.

 RNG engine

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RNG Configuration Options

Name Configuration Throughput
Gate Count¹
DxRNG-01 TRNG
1.8Kbits/sec² 4.2K
DxRNG-02 PRNG 600Mbps 18K
DxRNG-03 TRNG+PRNG
23K

  1. Technology and synthesis dependent; based on the use of design compiler and slow speed 0.09 ?m TSMC technology; measured at 100MHz
  2. Measured in 0.18?m TSMC technology at 60MHz system clock and compliant with NIST 800-20

Key Features

  • NIST 800-20 test compliant
  • Silicon-proven on multiple platforms
  • Continuous statistical auto correlation testing
  • Built in self-testing
  • Digital source of entropy
  • Easily integrated
  • Automatic re-seeding
  • AES based post processing
  • PRNG NIST 800-90 compliant

 

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