# Hammer 1971: Signature simulation and certain cryptographic codes

> Carl Hammer, 1971. 2 records on Mysteries Department cite it. The published form of Hammer's analyses, which the article cites through the NSA release…

Source: https://mysteriesdept.com/sources/SRC0CR7HV083HNE/signature-simulation-and-certain-cryptographic-codes  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Beale ciphers](https://mysteriesdept.com/mysteries/beale-ciphers)Hammer 1971

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# Signature simulation and certain cryptographic codes

Carl Hammer, 1971. _Communications of the ACM 14(1): 3-14_.

Hammer's computer study of the Beale ciphers: he compares the number sequences of ciphers 1 and 3 with simulated "signatures" of encipherment by a key text.

**Beale ciphersSecondary source** ArticleCopy of **[The National Security Agency's Beale files](https://mysteriesdept.com/mysteries/beale-ciphers/artifacts/ART0CR7JE1M2E0W/the-national-security-agencys-beale-files)** doi: **[10.1145/362452.362461](https://doi.org/10.1145/362452.362461)** Checked against the original0

## What it's used for here

The published form of Hammer's analyses, which the article cites through the NSA release and Wikipedia.

## Cited by on this site 2 records

[The National Security Agency's Beale files: document](https://mysteriesdept.com/mysteries/beale-ciphers/copies/CPY0CR7JFGG7ZAG/the-national-security-agencys-beale-files-document)

CPY

[The Beale ciphers](https://mysteriesdept.com/mysteries/beale-ciphers)

The mystery article

MYS

## Cite it

```
Hammer, C. (1971). Signature simulation and certain cryptographic codes. Communications of the ACM 14(1): 3-14. https://doi.org/10.1145/362452.362461
```

[Read it free at doi.org](https://doi.org/10.1145/362452.362461)

Key

**SRC** 0CR7HV083HNE

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Journal article

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The publisher's

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Against the published article

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The record

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