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[crypticl-cvs] CVS update: crypticl/src/aes.lisp crypticl/src/load.lisp crypticl/src/sha.lisp
by Tage Stabell-Kulo 24 Nov '04

24 Nov '04

Update of /project/crypticl/cvsroot/crypticl/src In directory common-lisp.net:/tmp/cvs-serv16331/src Modified Files: aes.lisp load.lisp sha.lisp Log Message: Changed variable T to tmp and S tom Sbox. Date: Wed Nov 24 23:54:40 2004 Author: tstabell Index: crypticl/src/aes.lisp diff -u crypticl/src/aes.lisp:1.3 crypticl/src/aes.lisp:1.4 --- crypticl/src/aes.lisp:1.3 Sun Nov 7 13:04:17 2004 +++ crypticl/src/aes.lisp Wed Nov 24 23:54:38 2004 @@ -63,7 +63,7 @@ 57 75 221 124 132 151 162 253 28 36 108 180 199 82 246 1) ) -(defconstant S +(defconstant Sbox #( 99 124 119 123 242 107 111 197 48 1 103 43 254 215 171 118 202 130 201 125 250 89 71 240 173 212 162 175 156 164 114 192 183 253 147 38 54 63 247 204 52 165 229 241 113 216 49 21 @@ -220,7 +220,7 @@ (ROUNDS (get-num-rounds (length key))) (tk (make-array (list 4 Nk))) (w (make-array (list (1+ ROUNDS) 4 NB))) - (T 0) + (tmp 0) (RCpointer 1) (key (change-key-format key Nk))) @@ -232,17 +232,17 @@ ;;Copy key into first slot in round key (for (col 0 Nk) (for (row 0 4) - (setf (aref w (floor T NB) row (mod T NB)) (aref tk row col))) - (incf T)) + (setf (aref w (floor tmp NB) row (mod tmp NB)) (aref tk row col))) + (incf tmp)) ;;Calculate as much round key material as we need. i counts 32 bits words. - (while (< T (* (1+ ROUNDS) NB)) + (while (< tmp (* (1+ ROUNDS) NB)) (for (i 0 4) (setf (aref tk i 0) (logxor (aref tk i 0) - (aref S (aref tk (mod (1+ i) 4) (1- Nk)))))) + (aref Sbox (aref tk (mod (1+ i) 4) (1- Nk)))))) (setf (aref tk 0 0) (logxor @@ -269,7 +269,7 @@ (setf (aref tk i 4) (logxor (aref tk i 4) - (aref S (aref tk i 3))))) + (aref Sbox (aref tk i 3))))) (for (j 5 Nk) (for (i 0 4) (setf (aref tk i j) @@ -280,9 +280,9 @@ ;;Copy values to round key (for (col 0 Nk) (for (row 0 4) - (setf (aref w (floor T NB) row (mod T NB)) + (setf (aref w (floor tmp NB) row (mod tmp NB)) (aref tk row col))) - (incf T))) + (incf tmp))) w)) @@ -303,14 +303,14 @@ (add-round-key state rk) (for (r 1 ROUNDS) - (sub-bytes state S) + (sub-bytes state Sbox) (shift-rows state t) (mix-columns state) (fill-rk r) (add-round-key state rk)) ;;Last round is special. No mix-columns - (sub-bytes state S) + (sub-bytes state Sbox) (shift-rows state t) (fill-rk ROUNDS) (add-round-key state rk)))) Index: crypticl/src/load.lisp diff -u crypticl/src/load.lisp:1.4 crypticl/src/load.lisp:1.5 --- crypticl/src/load.lisp:1.4 Sun Nov 14 20:56:29 2004 +++ crypticl/src/load.lisp Wed Nov 24 23:54:38 2004 @@ -9,6 +9,10 @@ ;;;; Author: Tåle Skogan <tasko(a)frisurf.no> ;;;; Distribution: See the accompanying file LICENSE. +;;To-do: +;;-port this to non-Allegro lisps. excl: is Allegro spesific. Clisp +;; chokes on the Norwegian charachter in Tåle (above). + (in-package cl-user) ;;(proclaim '(optimize (speed 2) (safety 1) (space 1) (debug 3))) Index: crypticl/src/sha.lisp diff -u crypticl/src/sha.lisp:1.2 crypticl/src/sha.lisp:1.3 --- crypticl/src/sha.lisp:1.2 Sun Nov 7 01:17:35 2004 +++ crypticl/src/sha.lisp Wed Nov 24 23:54:38 2004 @@ -47,6 +47,16 @@ (values (ldb (byte 32 32) message-length-in-bits) (ldb (byte 32 0) message-length-in-bits))) +(defun new-sha1-length64 (mess-len octet-vector start) + "Returns octet-vector after the interger mess-len has been encoded as eight bytes, high order bits first, starting at start" + (do ((char 56 (- char 8))) + ((> 0 char) + octet-vector) + (setf (aref octet-vector start) + (ldb (byte 8 char) mess-len)) + (incf start))) + + (defun sha-function-1 (x y z) (logior (logand x y)(logand (lognot x) z) )) @@ -372,7 +382,7 @@ "84983e441c3bd26ebaae4aa1f95129e5e54670f1") (list #300(2 2 2) "e697e7834a688d2c982003a312da660a17a0fc9d")))) - + (format t "Testing SHA-1.~%") (dolist (x test-list (format t "Short vectors OK.~%")) (let ((in (first x)) (ex (second x)))

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[crypticl-cvs] CVS update: crypticl/doc/ChangeLog
by Tage Stabell-Kulo 24 Nov '04

24 Nov '04

Update of /project/crypticl/cvsroot/crypticl/doc In directory common-lisp.net:/tmp/cvs-serv16331/doc Modified Files: ChangeLog Log Message: Changed variable T to tmp and S tom Sbox. Date: Wed Nov 24 23:54:37 2004 Author: tstabell Index: crypticl/doc/ChangeLog diff -u crypticl/doc/ChangeLog:1.8 crypticl/doc/ChangeLog:1.9 --- crypticl/doc/ChangeLog:1.8 Wed Nov 24 09:27:31 2004 +++ crypticl/doc/ChangeLog Wed Nov 24 23:54:36 2004 @@ -1,5 +1,8 @@ +2004-11-24 Tage Stabell-Kulo <tage(a)tagehome.pasta.cs.uit.no> + + * src/sha1.lisp: Added more verbose printout. + * src/aes.lisp: Changed variable S to Sbox and T to tmp. --------------------------------- 0.1.0 -------------------------------------- 24-11-2004 Tåle Skogan<tasko(a)frisurf.no> * doc/README: tag instructions.

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[crypticl-cvs] CVS update: crypticl/doc/ChangeLog crypticl/doc/README
by Taale Skogan 24 Nov '04

24 Nov '04

Update of /project/crypticl/cvsroot/crypticl/doc In directory common-lisp.net:/tmp/cvs-serv31173/doc Modified Files: ChangeLog README Log Message: Tagging version 0.1.0 and using tags in ChangeLog. Date: Wed Nov 24 09:27:31 2004 Author: tskogan Index: crypticl/doc/ChangeLog diff -u crypticl/doc/ChangeLog:1.7 crypticl/doc/ChangeLog:1.8 --- crypticl/doc/ChangeLog:1.7 Tue Nov 23 22:19:17 2004 +++ crypticl/doc/ChangeLog Wed Nov 24 09:27:31 2004 @@ -1,3 +1,8 @@ + +-------------------------------- 0.1.0 -------------------------------------- +24-11-2004 Tåle Skogan<tasko(a)frisurf.no> + * doc/README: tag instructions. + 23-11-2004 Tåle Skogan<tasko(a)frisurf.no> * doc/README: new install instructions. Index: crypticl/doc/README diff -u crypticl/doc/README:1.3 crypticl/doc/README:1.4 --- crypticl/doc/README:1.3 Tue Nov 23 22:19:18 2004 +++ crypticl/doc/README Wed Nov 24 09:27:31 2004 @@ -25,7 +25,7 @@ See the user guide in the file USERGUIDE. DEVELOPERS -Document changes in the ChangeLog in addition to writing commit messages. Before commiting, check that the library loads correctly into a fresh top level (use (delete-package 'crypticl) and reload) and verify that the unit tests are successful. +Document changes in the ChangeLog in addition to writing commit messages. Before commiting, check that the library loads correctly into a fresh top level (use (delete-package 'crypticl) and reload) and verify that the unit tests are successful. Tag with V_<major>_<minor>_<num>, like V_0_1_0, V_0_1_1, etc. CHANGELOG See the file ChangeLog for the project change log.

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[crypticl-cvs] CVS update: obol/doc/ChangeLog
by Taale Skogan 23 Nov '04

23 Nov '04

Update of /project/crypticl/cvsroot/obol/doc In directory common-lisp.net:/tmp/cvs-serv27787 Added Files: ChangeLog Log Message: Adding ChangeLog. Date: Tue Nov 23 22:56:21 2004 Author: tskogan

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[crypticl-cvs] CVS update: Module imported: obol
by Taale Skogan 23 Nov '04

23 Nov '04

Update of /project/crypticl/cvsroot/obol In directory common-lisp.net:/tmp/cvs-serv26937 Log Message: initial import Status: Vendor Tag: tskogan Release Tags: start N obol/doc/README N obol/doc/TODO N obol/src/chat.lisp N obol/src/lib-chat.lisp N obol/src/LICENSE N obol/src/load.lisp N obol/src/lobo.lisp N obol/src/packages.lisp N obol/src/util.lisp N obol/src/prog/chat-auth-a.obol N obol/src/prog/chat-auth-b.obol N obol/src/prog/chat-auth-s.obol N obol/src/prog/chat-receive.obol N obol/src/prog/chat-send.obol N obol/src/prog/Denning-Sacco-a.obol N obol/src/prog/Denning-Sacco-b.obol N obol/src/prog/Denning-Sacco-s.obol N obol/src/prog/DH.key N obol/src/prog/diffie-hellman.obol N obol/src/prog/dsapriv.key N obol/src/prog/dsapub.key N obol/src/prog/eke-a.obol N obol/src/prog/eke-b.obol N obol/src/prog/K512a-1.key N obol/src/prog/K512a.key N obol/src/prog/K512b-1.key N obol/src/prog/K512b.key N obol/src/prog/Kas.key N obol/src/prog/Kbs.key N obol/src/prog/kerberos-c.obol N obol/src/prog/kerberos-kdc.obol N obol/src/prog/kerberos-server.obol N obol/src/prog/Ks.key N obol/src/prog/Ku.key N obol/src/prog/lib-chat-auth-a.obol N obol/src/prog/lib-chat-auth-b.obol N obol/src/prog/lib-chat-auth-s.obol N obol/src/prog/lib-chat-receive.obol N obol/src/prog/lib-chat-send.obol N obol/src/prog/needham-schroeder-a.obol N obol/src/prog/needham-schroeder-b.obol N obol/src/prog/needham-schroeder-s.obol N obol/src/prog/otway-rees-a.obol N obol/src/prog/otway-rees-b.obol N obol/src/prog/otway-rees-s.obol N obol/src/prog/pgp-a.obol N obol/src/prog/pgp-b.obol N obol/src/prog/pgp-keyserver.obol N obol/src/prog/test.obol N obol/src/prog/wide-mouthed-frog-a.obol N obol/src/prog/wide-mouthed-frog-b.obol N obol/src/prog/wide-mouthed-frog-s.obol N obol/src/prog/yahalom-a.obol N obol/src/prog/yahalom-b.obol N obol/src/prog/yahalom-s.obol No conflicts created by this import Date: Tue Nov 23 22:43:43 2004 Author: tskogan New module obol added

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[crypticl-cvs] CVS update: crypticl/doc/ChangeLog crypticl/doc/README
by Taale Skogan 23 Nov '04

23 Nov '04

Update of /project/crypticl/cvsroot/crypticl/doc In directory common-lisp.net:/tmp/cvs-serv25741/doc Modified Files: ChangeLog README Log Message: New install instructions. Date: Tue Nov 23 22:19:18 2004 Author: tskogan Index: crypticl/doc/ChangeLog diff -u crypticl/doc/ChangeLog:1.6 crypticl/doc/ChangeLog:1.7 --- crypticl/doc/ChangeLog:1.6 Sun Nov 14 20:56:27 2004 +++ crypticl/doc/ChangeLog Tue Nov 23 22:19:17 2004 @@ -1,3 +1,6 @@ +23-11-2004 Tåle Skogan<tasko(a)frisurf.no> + * doc/README: new install instructions. + 15-11-2004 Tåle Skogan<tasko(a)frisurf.no> * src/crypticl-package.lisp: place load code in separate file. * src/load.lisp: load function. Index: crypticl/doc/README diff -u crypticl/doc/README:1.2 crypticl/doc/README:1.3 --- crypticl/doc/README:1.2 Mon Sep 20 21:30:33 2004 +++ crypticl/doc/README Tue Nov 23 22:19:18 2004 @@ -2,8 +2,7 @@ Crypticl is a library of cryptographic functions written in Common Lisp. The goal is to provide flexible, high level cryptographic abstractions on top of -a kernel of core cryptographic primitives. It is distributed under an -MIT-style license (see the LICENSE file). +a kernel of core cryptographic primitives. It is distributed under a MIT-style license (see the LICENSE file). The library will be limited to common, secure algorithms and not try to implement all available cryptographic algorithms. Hence AES is included and @@ -13,22 +12,23 @@ http://common-lisp.net/project/crypticl/ INSTALL -The library can be loaded by loading the file crypticl-package.lisp. This file - will call a function that loads the library and runs unit tests. The load -function by default assumes that the source is located in the current -directory. The default should be changed to fit applications using the library. +The library can be loaded by loading the file "load.lisp". This file + will load the library and run unit tests. -ex: (load "crypticl-package.lisp") +ex: (load "C:\\crypticl\\src\\load") -The library has only been tested on Allegro 6.2 and may by oversight still +The library has only been tested with Allegro 6.2 and may by oversight still contain some Allegro specific functions, but the bulk of the code should work -on all Common Lisp platforms. +on all Common Lisp implementations. DOCUMENTATION See the user guide in the file USERGUIDE. +DEVELOPERS +Document changes in the ChangeLog in addition to writing commit messages. Before commiting, check that the library loads correctly into a fresh top level (use (delete-package 'crypticl) and reload) and verify that the unit tests are successful. + CHANGELOG -See the file CHANGELOG for the project change log. +See the file ChangeLog for the project change log. CREDITS Tage Stabell-Kulø

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[crypticl-cvs] CVS update: crypticl/src/load.lisp crypticl/src/crypticl-package.lisp crypticl/src/keystore.lisp crypticl/src/test.lisp
by Taale Skogan 14 Nov '04

14 Nov '04

Update of /project/crypticl/cvsroot/crypticl/src In directory common-lisp.net:/tmp/cvs-serv21733/src Modified Files: crypticl-package.lisp keystore.lisp test.lisp Added Files: load.lisp Log Message: Changing loading. Date: Sun Nov 14 20:56:30 2004 Author: tskogan Index: crypticl/src/load.lisp diff -u /dev/null crypticl/src/load.lisp:1.4 --- /dev/null Sun Nov 14 20:56:30 2004 +++ crypticl/src/load.lisp Sun Nov 14 20:56:29 2004 @@ -0,0 +1,42 @@ +;;;;-*-lisp-*- +;;;; The Crypticl cryptographic library. +;;;; +;;;; Description: Loads the library. +;;;; +;;;; Usage: Loading this file will load the rest of the library. +;;;; After loading you can list the public interface with +;;;; (crypticl:print-external-symbols) from the top-level. +;;;; Author: Tåle Skogan <tasko(a)frisurf.no> +;;;; Distribution: See the accompanying file LICENSE. + +(in-package cl-user) + +;;(proclaim '(optimize (speed 2) (safety 1) (space 1) (debug 3))) + + +;; Load library. If fast-load is true, do quick load without recompiling. +;; NB! The order of the file names in the list matter. +(let ((fast-load t) + (files '("crypticl-package" + "utilities" + "numtheory" + "common" + "sha" ;used by random + "random" + "keygenerator" + "md5" "aes" "idea" "dsa" "rsa" "diffie-hellman" + "keystore" + "test"))) + (format t "Loading the Crypticl library...") + (dolist (file files) + (let* ((path + (make-pathname + :device (pathname-device *load-pathname*) + :directory (directory-namestring *load-pathname*))) + (module (merge-pathnames file path))) + (if fast-load + (excl::compile-file-if-needed module) + (compile-file module :verbose nil)) + (load module)))) + + Index: crypticl/src/crypticl-package.lisp diff -u crypticl/src/crypticl-package.lisp:1.5 crypticl/src/crypticl-package.lisp:1.6 --- crypticl/src/crypticl-package.lisp:1.5 Sun Nov 14 00:10:39 2004 +++ crypticl/src/crypticl-package.lisp Sun Nov 14 20:56:29 2004 @@ -55,34 +55,3 @@ decrypt print-external-symbols)) -;;(proclaim '(optimize (speed 2) (safety 1) (space 1) (debug 3))) -(in-package crypticl) - -(defun load-package (&optional (path "") (fast-load nil)) - "Load library. Default src location is current directory. If fast-load is true, do quick load without recompiling and running unit tests." - - (format t "Loading the Crypticl library...") - ;; NB! The order of the file names in the list matter. - (let ((files '("utilities" - "numtheory" - "common" - "sha" ;used by random - "random" - "keygenerator" - "md5" "aes" "idea" "dsa" "rsa" "diffie-hellman" - "keystore" - "test"))) - (dolist (file files) - (let ((module (concatenate 'string path file))) - (if fast-load - (excl::compile-file-if-needed module) - (compile-file module :verbose nil)) - (load module))) - - (unless fast-load - (run-tests)))) - - -;;(load-package) - - Index: crypticl/src/keystore.lisp diff -u crypticl/src/keystore.lisp:1.1 crypticl/src/keystore.lisp:1.2 --- crypticl/src/keystore.lisp:1.1 Sun Nov 7 13:04:17 2004 +++ crypticl/src/keystore.lisp Sun Nov 14 20:56:29 2004 @@ -43,7 +43,7 @@ (parse-integer (nth 3 tokens)) (parse-integer (nth 4 tokens)))) -|# +#| "Tåle Skogan" "tasko(a)stud.cs.uit.no" - first line RSAPublicKey "22ffee" 5 119 - one line per key RSAPrivateKey "22ffee" 77 119 @@ -52,7 +52,7 @@ RSAPublicKey "1234ffee" 3533 11413 RSAPrivateKey "4321ffee" 6597 11413 **** -#| +|# (defun new-user (line) (string= (string-trim " " line ) "****")) @@ -142,7 +142,7 @@ "Retrieves key" (gethash fingerprint (ht obj))) -|# +#| "Tåle Skogan" "tasko(a)stud.cs.uit.no" - first line RSAPublicKey "22ffee" 5 119 - one line per key RSAPrivateKey "22ffee" 77 119 @@ -151,7 +151,7 @@ RSAPublicKey "1234ffee" 3533 11413 RSAPrivateKey "4321ffee" 6597 11413 **** -#| +|# (defmethod write-to-file ((obj KeyStore) &optional (filename (path obj))) (with-open-file (str filename :direction :output :if-exists :supersede) Index: crypticl/src/test.lisp diff -u crypticl/src/test.lisp:1.2 crypticl/src/test.lisp:1.3 --- crypticl/src/test.lisp:1.2 Sun Nov 7 01:17:35 2004 +++ crypticl/src/test.lisp Sun Nov 14 20:56:29 2004 @@ -53,4 +53,6 @@ (test-AES) (test-RSA) (test-IDEA) - (test-DSA)) \ No newline at end of file + (test-DSA)) + +(run-tests) \ No newline at end of file

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[crypticl-cvs] CVS update: crypticl/doc/ChangeLog
by Taale Skogan 14 Nov '04

14 Nov '04

Update of /project/crypticl/cvsroot/crypticl/doc In directory common-lisp.net:/tmp/cvs-serv21733/doc Modified Files: ChangeLog Log Message: Changing loading. Date: Sun Nov 14 20:56:27 2004 Author: tskogan Index: crypticl/doc/ChangeLog diff -u crypticl/doc/ChangeLog:1.5 crypticl/doc/ChangeLog:1.6 --- crypticl/doc/ChangeLog:1.5 Sun Nov 14 00:10:36 2004 +++ crypticl/doc/ChangeLog Sun Nov 14 20:56:27 2004 @@ -1,3 +1,7 @@ +15-11-2004 Tåle Skogan<tasko(a)frisurf.no> + * src/crypticl-package.lisp: place load code in separate file. + * src/load.lisp: load function. + 14-11-2004 Tåle Skogan<tasko(a)frisurf.no> Minor modifications to get Obol runtime to load.

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[crypticl-cvs] CVS update: crypticl/src/crypticl-package.lisp crypticl/src/dsa.lisp crypticl/src/keygenerator.lisp crypticl/src/rsa.lisp
by Taale Skogan 13 Nov '04

13 Nov '04

Update of /project/crypticl/cvsroot/crypticl/src In directory common-lisp.net:/tmp/cvs-serv17529/src Modified Files: crypticl-package.lisp dsa.lisp keygenerator.lisp rsa.lisp Log Message: Minor mods to get Obol runtime to load. Date: Sun Nov 14 00:10:39 2004 Author: tskogan Index: crypticl/src/crypticl-package.lisp diff -u crypticl/src/crypticl-package.lisp:1.4 crypticl/src/crypticl-package.lisp:1.5 --- crypticl/src/crypticl-package.lisp:1.4 Sun Nov 7 21:23:33 2004 +++ crypticl/src/crypticl-package.lisp Sun Nov 14 00:10:39 2004 @@ -14,6 +14,7 @@ (in-package cl-user) (defpackage crypticl + (:nicknames clc) (:use common-lisp) (:export get-secret-Diffie-Hellman @@ -82,6 +83,6 @@ (run-tests)))) -(load-package) +;;(load-package) Index: crypticl/src/dsa.lisp diff -u crypticl/src/dsa.lisp:1.4 crypticl/src/dsa.lisp:1.5 --- crypticl/src/dsa.lisp:1.4 Sun Nov 7 21:23:33 2004 +++ crypticl/src/dsa.lisp Sun Nov 14 00:10:39 2004 @@ -276,7 +276,6 @@ (defun dsa-generate-keys (bitsize) (declare (ignore bitsize)) "Return a DSAKeyPair" - (format t "~&Generating DSA keys, this may take some time...") (let ((alg (make-DSA :defaultp t))) (make-DSAKeyPair (p alg) (q alg) (g alg) (x alg) (y alg)))) Index: crypticl/src/keygenerator.lisp diff -u crypticl/src/keygenerator.lisp:1.4 crypticl/src/keygenerator.lisp:1.5 --- crypticl/src/keygenerator.lisp:1.4 Sun Nov 7 21:23:33 2004 +++ crypticl/src/keygenerator.lisp Sun Nov 14 00:10:39 2004 @@ -52,12 +52,7 @@ (make-SymmetricKey (random-secure-octets octet-size) algorithm))) - - -;; Can be used by lobo -(defgeneric key-from-encoding (keytype encoding)) - -(defmethod key-from-encoding ((keytype string) encoding) +(defun key-from-encoding (keytype encoding) "dispatch on keytype" (do ((fun (get-key-from-encoding keytype) (get-key-from-encoding keytype))) Index: crypticl/src/rsa.lisp diff -u crypticl/src/rsa.lisp:1.3 crypticl/src/rsa.lisp:1.4 --- crypticl/src/rsa.lisp:1.3 Sun Nov 7 13:04:17 2004 +++ crypticl/src/rsa.lisp Sun Nov 14 00:10:39 2004 @@ -386,8 +386,6 @@ (defun rsa-generate-keys (bitsize) "Returns list with (public exponent, private exponent, modulus)" - (format t - "~&Generating ~A bits RSA keys, this may take some time..." bitsize) (let* ((e 17) (p (rsa-get-prime (floor bitsize 2) e)) (q (rsa-get-prime (floor bitsize 2) e))

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[crypticl-cvs] CVS update: crypticl/doc/ChangeLog
by Taale Skogan 13 Nov '04

13 Nov '04

Update of /project/crypticl/cvsroot/crypticl/doc In directory common-lisp.net:/tmp/cvs-serv17529/doc Modified Files: ChangeLog Log Message: Minor mods to get Obol runtime to load. Date: Sun Nov 14 00:10:37 2004 Author: tskogan Index: crypticl/doc/ChangeLog diff -u crypticl/doc/ChangeLog:1.4 crypticl/doc/ChangeLog:1.5 --- crypticl/doc/ChangeLog:1.4 Sun Nov 7 21:23:32 2004 +++ crypticl/doc/ChangeLog Sun Nov 14 00:10:36 2004 @@ -1,3 +1,6 @@ +14-11-2004 Tåle Skogan<tasko(a)frisurf.no> + Minor modifications to get Obol runtime to load. + 07-11-2004 Tåle Skogan<tasko(a)frisurf.no> Adding to USERGUIDE.

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