IN2014CN02071A - - Google Patents

Info

Publication number
IN2014CN02071A
IN2014CN02071A IN2071CHN2014A IN2014CN02071A IN 2014CN02071 A IN2014CN02071 A IN 2014CN02071A IN 2071CHN2014 A IN2071CHN2014 A IN 2071CHN2014A IN 2014CN02071 A IN2014CN02071 A IN 2014CN02071A
Authority
IN
India
Prior art keywords
random values
entropy source
provides
processing module
sensing circuit
Prior art date
Application number
Inventor
David M Jacobson
Xiaochun Zhu
Wenqing Wu
Kendrick Hoy Leong Yuen
Seung H Kang
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2014CN02071A publication Critical patent/IN2014CN02071A/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/588—Random number generators, i.e. based on natural stochastic processes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1659—Cell access
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1673—Reading or sensing circuits or methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1695—Protection circuits or methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1697—Power supply circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2205/00—Indexing scheme relating to group G06F5/00; Methods or arrangements for data conversion without changing the order or content of the data handled
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/581—Generating an LFSR sequence, e.g. an m-sequence; sequence may be generated without LFSR, e.g. using Galois Field arithmetic

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Hall/Mr Elements (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

An entropy source and a random number (RN) generator are disclosed. In one aspect a low energy entropy source includes a magneto resistive (MR) element and a sensing circuit. The MR element is applied a static current and has a variable resistance determined based on magnetization of the MR element. The sensing circuit senses the resistance of the MR element and provides random values based on the sensed resistance of the MR element. In another aspect a RN generator includes an entropy source and a post processing module. The entropy source includes at least one MR element and provides first random values based on the at least one MR element. The post processing module receives and processes the first random values (e.g. based on a cryptographic hash function an error detection code a stream cipher algorithm etc.) and provides second random values having improved randomness characteristics.
IN2071CHN2014 2011-09-20 2012-09-17 IN2014CN02071A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161536769P 2011-09-20 2011-09-20
US13/367,322 US9189201B2 (en) 2011-09-20 2012-02-06 Entropy source with magneto-resistive element for random number generator
PCT/US2012/055785 WO2013043543A2 (en) 2011-09-20 2012-09-17 Entropy source with magneto-resistive element for random number generator

Publications (1)

Publication Number Publication Date
IN2014CN02071A true IN2014CN02071A (en) 2015-05-29

Family

ID=47881665

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2071CHN2014 IN2014CN02071A (en) 2011-09-20 2012-09-17

Country Status (8)

Country Link
US (2) US9189201B2 (en)
EP (1) EP2758865B1 (en)
JP (1) JP5826400B2 (en)
KR (1) KR101617832B1 (en)
CN (1) CN103890712B (en)
IN (1) IN2014CN02071A (en)
TW (1) TW201319930A (en)
WO (1) WO2013043543A2 (en)

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Also Published As

Publication number Publication date
WO2013043543A2 (en) 2013-03-28
EP2758865A2 (en) 2014-07-30
US20130073598A1 (en) 2013-03-21
US20170010864A1 (en) 2017-01-12
KR20140069195A (en) 2014-06-09
CN103890712A (en) 2014-06-25
EP2758865B1 (en) 2017-10-18
CN103890712B (en) 2017-02-15
US9189201B2 (en) 2015-11-17
JP2014531669A (en) 2014-11-27
JP5826400B2 (en) 2015-12-02
KR101617832B1 (en) 2016-05-03
WO2013043543A3 (en) 2013-06-06
TW201319930A (en) 2013-05-16

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