[crypticl-cvs] CVS crypticl/src

tskogan tskogan at common-lisp.net
Tue Jan 23 21:20:36 UTC 2007


Update of /project/crypticl/cvsroot/crypticl/src
In directory clnet:/tmp/cvs-serv1638

Modified Files:
	random.lisp 
Log Message:
Remove non-secure generator to avoid mistakes.


--- /project/crypticl/cvsroot/crypticl/src/random.lisp	2007/01/20 15:46:59	1.5
+++ /project/crypticl/cvsroot/crypticl/src/random.lisp	2007/01/23 21:20:36	1.6
@@ -1,24 +1,15 @@
 ;;;;-*-lisp-*-
 ;;;; The Crypticl cryptographic library.
 ;;;;
-;;;; Description: Pseudo random number generation.
+;;;; Description: Cryptographically secure pseudo random number generator.
 ;;;; Author: Taale Skogan
 ;;;; Distribution:  See the accompanying file LICENSE.
 
-
 ;;To do:
 ;;-get high entropy bits on non-Linux system. Either roll your own (most likely bad idea) or use win32API to handle one other system. But this is not important. win32 API CryptGenRandom.
-;;-test suite. Some simple statistical tests on output?
 
 (in-package crypticl)
 
-(defun random-bignum (bitsize)
-  "Return random integer bitsize bits long, i.e. an integer in the range [0, 2^bitsize - 1]. Uses the internal Lisp PSNG random which is _not_ cryptographically secure.
-"
-  (warn "Using a PSNG which is _not_ cryptographically secure.")
-  (random-bignum-internal bitsize #'random))
-
-
 
 (defun random-secure-bignum (bitsize)
   "Return random integer bitsize bits long generatated from a cryptograpically secure pseudo random number generator. The function is very slow because random-secure invokes SHA-1 multiple times. It should only be used for cryptographic keys and the like. 
@@ -55,8 +46,7 @@
 
 
 
-;;;;;;;;
-;;; CRYPTOGRAPHICALLY SECURE RANDOM NUMBER GENERATOR
+;;;;;;;; CRYPTOGRAPHICALLY SECURE RANDOM NUMBER GENERATOR
 
 (defparameter *random-secure-obj* nil
   "State for the random number generator")




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