simplify readme

README.md

@@ -1,6 +1,5 @@
-A didactic implementation of the Fortuna cryptographically secure pseudorandom number generator.
+A didactic and minimal implementation of the Fortuna cryptographically secure pseudorandom number generator.
 
-Examples only tested in Linux, but they should work also in macOS.
 
 ```
 $ pip install .
@@ -19,25 +18,25 @@ EOF  print_pools  print_seed_file  update_seed_file
 (fortuna)
 ```
 
+In your terminal, a colored tracing will be displayed:
+
 ![screenshot](./docs/screenshot.png)
 
-# Learn specification
+The example has only been tested on Linux, but it should work on macOS as well.
+
+## Learn specification
 
 - https://en.wikipedia.org/wiki/Fortuna_(PRNG)
-- https://www.schneier.com/academic/paperfiles/fortuna.pdf
+- https://www.schneier.com/academic/paperfiles/fortuna.pdf This is a chapter
+  part of the book `Cryptography Engineering`. Previous chapters will help you
+  to understand this one.
 
-# Other implementations
+## Other implementations
 
+- https://github.com/otms61/fortuna
+  The base of this project but it seems unmaintained.
 - https://github.com/seehuhn/fortuna
   - Interface for entropy sources is easier for user/application.
-    In `entropy.go` the following functions are defined:
-    - `func (acc *Accumulator) addRandomEvent(source uint8, seq uint, data []byte)`
-      It accepts a sequence number instead of pool index.
-    - `func (acc *Accumulator) allocateSource() uint8`
-      To ease that 2 sources doesn't share the same identifier.
-      In line with the book: *allocate source numbers statically or dinamically*
-    - `func (acc *Accumulator) NewEntropyDataSink() chan<- []byte`
-    - `func (acc *Accumulator) NewEntropyTimeStampSink() chan<- time.Time`
 - [pycrypto/Fortuna](https://github.com/pycrypto/pycrypto/tree/65b43bd4ffe2a48bdedae986b1a291f5a2cc7df7/lib/Crypto/Random/Fortuna)
   - pycrypto/lib/Crypto/Random/Fortuna/
     - FortunaAccumulator.py
@@ -47,12 +46,4 @@ EOF  print_pools  print_seed_file  update_seed_file
     - test_FortunaAccumulator.py
     - test_FortunaGenerator.py
     - test_SHAd256.py
-  - https://nvd.nist.gov/vuln/detail/cve-2013-1445
-  - `class FortunaPool`
-  - `which_pool()` function separated from `random_data()` making it more testeable
-  - seed file not supported
-  - extensively commented
-  - `class Util.Counter`
-  - `FortunaGenerator.max_blocks_per_request` explanation
-  - `AES` returns integers instead of bytes
 - https://github.com/freebsd/freebsd-src/blob/main/sys/dev/random/fortuna.c