# Kopal 2019: Cryptanalysis of Homophonic Substitution Ciphers Using Simulated Annealing with Fixed Temperature

> Nils Kopal, 2019. 2 records on Mysteries Department cite it. The mixed-keys survey adopts its fixed-temperature annealing with spare key slots as a…

Source: https://mysteriesdept.com/sources/SRC08JJCVCG5E1F/cryptanalysis-of-homophonic-substitution-ciphers-using  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Voynich Manuscript](https://mysteriesdept.com/mysteries/voynich-manuscript)Kopal 2019

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# Cryptanalysis of Homophonic Substitution Ciphers Using Simulated Annealing with Fixed Temperature

Nils Kopal, 2019. _Proceedings of the 2nd International Conference on Historical Cryptology (HistoCrypt 2019)_: 107–116.

Describes an attack on homophonic substitution ciphers by simulated annealing at a fixed temperature, implemented in CrypTool 2, and sets its results against earlier solvers.

**Voynich Manuscript** ArticleChecked against the original0

## What it's used for here

The mixed-keys survey adopts its fixed-temperature annealing with spare key slots as a solver technique; it also appears in the book's bibliography.

## Cited by on this site 2 records

[Reading Without a Key](https://mysteriesdept.com/sources/SRC0D8NJAWT22V4/reading-without-a-key)

The book, version 2.0

SRC

[1 methods surveys]

Mixed keys

SRC

## Cite it

```
Kopal, N. (2019). Cryptanalysis of Homophonic Substitution Ciphers Using Simulated Annealing with Fixed Temperature. Proceedings of the 2nd International Conference on Historical Cryptology (HistoCrypt 2019), 107–116.
```

[Read it free at ep.liu.se](https://ep.liu.se/ecp/158/012/ecp19158012.pdf)

Key

**SRC** 08JJCVCG5E1F

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Journal article

Rights

unknown

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Against the published article

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[apollo](https://mysteriesdept.com/u/apollo)

The record

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