[taler-anastasis] branch master updated: added key gen illustration

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dennis-neufeld pushed a commit to branch master
in repository anastasis.

The following commit(s) were added to refs/heads/master by this push:
     new 0c365a4  added key gen illustration
0c365a4 is described below

commit 0c365a4076090d499fa0776a4998e85929ea93c2
Author: Dennis Neufeld <dennis.neufeld@students.bfh.ch>
AuthorDate: Thu Oct 1 16:22:33 2020 +0200

    added key gen illustration
---
 doc/ypsomed/key_gen.PNG | Bin 0 -> 74868 bytes
 doc/ypsomed/ypsomed.tex |   6 +++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/ypsomed/key_gen.PNG b/doc/ypsomed/key_gen.PNG
new file mode 100644
index 0000000..5d3fb9b
Binary files /dev/null and b/doc/ypsomed/key_gen.PNG differ
diff --git a/doc/ypsomed/ypsomed.tex b/doc/ypsomed/ypsomed.tex
index 6ad068a..54646bd 100644
--- a/doc/ypsomed/ypsomed.tex
+++ b/doc/ypsomed/ypsomed.tex
@@ -132,7 +132,11 @@ details of each component are explained later.
 
 
 \subsection{Recovery and backup flow}
-
+The following is a very simplified description of the Anastasis protocol. It 
is only intended to illustrate how Anastasis basically works:\\
+ \begin{center}  
+       \includegraphics[scale=0.35]{key_gen.png}
+\end{center}
+Before each backup or recovery process, two keys (K1 and K2) are derived from 
the user attributes.\\
  \begin{center}  
   \includegraphics[scale=0.35]{step1.png}
  \end{center}

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