Difference between revisions of "SHA-1"
From The ECRYPT Hash Function Website
m (→State Update Transformation) |
(→State Update Transformation) |
||
| Line 21: | Line 21: | ||
\end{equation*} | \end{equation*} | ||
\begin{equation} | \begin{equation} | ||
| − | \text{this works but | + | \label{eqn:a} |
| + | \text{this works but is a fuck*** ugly hack } | ||
a = \sum_{i=0}^{n}{2^i} | a = \sum_{i=0}^{n}{2^i} | ||
\end{equation} | \end{equation} | ||
Revision as of 16:54, 11 October 2006
Contents
1 General Description
SHA-1 is an iterated hash function.
1.1 Compression Function
The compression function takes as input a 512-bit message block and a 160-bit chaining variable, and produces a 160-bit chaining value. The compression function is described as follows:
1.1.1 Message Expansion
1.1.2 State Update Transformation
WikiTeX: latex reported a failure, namely:
/data/www/ehash/html/extensions/wikitex/wikitex.sh: line 59: latex: command not found
WikiTeX: latex reported a failure, namely:
/data/www/ehash/html/extensions/wikitex/wikitex.sh: line 59: latex: command not found
1.2 Padding Method
1.3 Initial Value and Constants
WikiTeX: latex reported a failure, namely:
/data/www/ehash/html/extensions/wikitex/wikitex.sh: line 59: latex: command not found
2 Claimed Security Margins
3 Security Anaylsis
- Best know attack: <math>2^{63}</math> by Wang et.al.
- Best known collision example: 64-step collision by De Canniere and Rechberger
something like: best know attack to date: kind of attack, which variant has been looked at (e.g. round-reduced), complexity, and reference to paper and abstract.
may be make here a new page with the other cryptanalysis results.
