From dc512f953cf5cda5bb1de4af0960f4f93e391c57 Mon Sep 17 00:00:00 2001
From: Alaric Snell-Pym <alaric@register-dynamics.co.uk>
Date: Tue, 24 Nov 2020 13:06:19 +0000
Subject: Support Chicken 5


diff --git a/pbkdf2.egg b/pbkdf2.egg
new file mode 100644
index 0000000..b0ff965
--- /dev/null
+++ b/pbkdf2.egg
@@ -0,0 +1,10 @@
+((license "BSD")
+ (category crypt)
+ (dependencies message-digest hmac sha2 sha1 md5 md2)
+ (test-dependencies test)
+ (version "1.2")
+ (author "Tobias Heilig")
+ (synopsis "Password-Based Key Derivation Function as defined in RFC2898")
+ (components
+  (extension pbkdf2)))
+
diff --git a/pbkdf2.scm b/pbkdf2.scm
index 687afab..c8bf42c 100644
--- a/pbkdf2.scm
+++ b/pbkdf2.scm
@@ -48,9 +48,27 @@
          pbkdf2-hmac-sha512)
 
 
-  (import chicken scheme)
+  (import scheme)
+
+  (cond-expand
+   (chicken-4
+    (import chicken)
+    (use srfi-1 srfi-4 srfi-13 message-digest hmac sha2 sha1 md5 md2))
+   (chicken-5
+    (import (chicken base))
+    (import (chicken bitwise))
+    (import (chicken blob))
+    (import srfi-1)
+    (import srfi-4)
+    (import srfi-13)
+    (import message-digest)
+    (import hmac)
+    (import sha2)
+    (import sha1)
+    (import md5)
+    (import md2)))
+
 
-  (use srfi-1 srfi-4 srfi-13 message-digest hmac sha2 sha1 md5 md2)
 
 
   (define (^ s1 s2)
diff --git a/tests/run.scm b/tests/run.scm
index 2235ef8..3345982 100644
--- a/tests/run.scm
+++ b/tests/run.scm
@@ -5,7 +5,13 @@
 
 
 
-(use test pbkdf2)
+(cond-expand
+ (chicken-4
+  (use test pbkdf2))
+ (chicken-5
+  (import (chicken blob))
+  (import test)
+  (import pbkdf2)))