From cffd0299fe9ecfbffd78a503b2e89b0a4cda16e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Grubbstr=C3=B6m=20=28Grubba=29?=
<grubba@grubba.org>
Date: Wed, 13 Nov 1996 16:26:51 +0100
Subject: [PATCH] Decryption is now done in the reverse order of encryption.
Rev: src/modules/_Crypto/pipe.c:1.2
---
src/modules/_Crypto/pipe.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/src/modules/_Crypto/pipe.c b/src/modules/_Crypto/pipe.c
index 870dd9df6d..33c5fef1c3 100644
--- a/src/modules/_Crypto/pipe.c
+++ b/src/modules/_Crypto/pipe.c
@@ -1,5 +1,5 @@
/*
- * $Id: pipe.c,v 1.1 1996/11/11 19:24:04 grubba Exp $
+ * $Id: pipe.c,v 1.2 1996/11/13 15:26:51 grubba Exp $
*
* PIPE crypto module for Pike.
*
@@ -185,6 +185,7 @@ static void f_set_encrypt_key(INT32 args)
if (args != PIKE_PIPE->num_objs) {
error("Wrong number of arguments to pipe->set_encrypt_key()\n");
}
+ PIKE_PIPE->mode = 0;
for (i=-args; i; i++) {
int n_args;
@@ -211,6 +212,7 @@ static void f_set_decrypt_key(INT32 args)
if (args != PIKE_PIPE->num_objs) {
error("Wrong number of arguments to pipe->set_decrypt_key()\n");
}
+ PIKE_PIPE->mode = 1;
for (i=-args; i; i++) {
int n_args;
@@ -243,8 +245,15 @@ static void f_crypt_block(INT32 args)
if (sp[-1].u.string->len % PIKE_PIPE->block_size) {
error("Bad length of argument 1 to pipe->crypt_block()\n");
}
- for (i=0; i<PIKE_PIPE->num_objs; i++) {
- safe_apply(PIKE_PIPE->objects[i], "crypt_block", 1);
+ if (PIKE_PIPE->mode) {
+ /* Decryption -- Reverse the order */
+ for (i=PIKE_PIPE->num_objs; i--;) {
+ safe_apply(PIKE_PIPE->objects[i], "crypt_block", 1);
+ }
+ } else {
+ for (i=0; i<PIKE_PIPE->num_objs; i++) {
+ safe_apply(PIKE_PIPE->objects[i], "crypt_block", 1);
+ }
}
}
--
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