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# Chaos in Cryptography - PowerPoint PPT Presentation

Chaos in Cryptography. What is Chaos in Cryptography Chaos Functions Application in Cryptography Why it isn’t used. What does it mean?. Use Chaos Functions Pseudo Random Generation One-Time Pad. Chaos Functions. Sensitive to Initial Value Sequence Based on Seed

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## PowerPoint Slideshow about 'Chaos in Cryptography' - jacob

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Presentation Transcript

### Chaos in Cryptography

• What is Chaos in Cryptography

• Chaos Functions

• Application in Cryptography

• Why it isn’t used

• Use Chaos Functions

• Pseudo Random Generation

• Sensitive to Initial Value

• Sequence Based on Seed

• Non-Computable Generation

Bifurcation Diagram

Diagram shows accuracy based on initial seed.

### Application in Cryptography

• Seed Unique to Key

• Symmetric Key System

### 64 Bit Example

• Generate Key

• Convert to Seed

• Iterate

• XOR with Data

• Symmetrical Operation

### Why it isn’t used

• Security Cannot Be Proven

• Attractors

• Computationally Expensive

### References

Dr. Ranjan Bose and Amitabha Banerjee. “Implementing Symmetric Cryptography Using Chaos Functions”

Wikipedia http://en.wikipedia.org/wiki/Logistic_map

M. S. Baptista, “Cryptography with Chaos” Physics Letters A , Vol. 240, Pages 50–54, 1998

Shujun Li, Guanrong Chen, Kwok-Wo Wong, Xuanqin Mou, and Yuanlong Cai. “Baptista-type chaotic cryptosystems:

Problems and countermeasures”