commit fd02470c0d23a645811d658082138a2452cf6049
Author: tlyu <tlyu@dc483132-0cff-0310-8789-dd5450dbe970>
Date: Thu Jan 21 22:49:07 2010 +0000
ticket: 6645
version_fixed: 1.8
status: resolved
pull up r23663 from trunk
------------------------------------------------------------------------
r23663 | ghudson | 2010-01-19 18:35:39 -0500 (Tue, 19 Jan 2010) | 9 lines
ticket: 6645
subject: Add krb5_allow_weak_crypto API
target_version: 1.8
tags: pullup
Add an API to allow apps to override the profile setting of
allow_weak_crypto, so that aklog can work with krb5 1.8 out of the box
until OpenAFS finishes migrating away from DES.
git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-8@23665 dc483132-0cff-0310-8789-dd5450dbe970
src/include/krb5/krb5.hin | 5 +++++
src/lib/krb5/krb/Makefile.in | 1 +
src/lib/krb5/krb/allow_weak.c | 38 ++++++++++++++++++++++++++++++++++++++
src/lib/krb5/libkrb5.exports | 1 +
4 files changed, 45 insertions(+), 0 deletions(-)
---
diff --git a/src/include/krb5/krb5.hin b/src/include/krb5/krb5.hin
index 0941273..63b6971 100644
--- a/src/include/krb5/krb5.hin
+++ b/src/include/krb5/krb5.hin
@@ -2553,6 +2553,11 @@ krb5_pac_verify(krb5_context context, const krb5_pac pac,
krb5_timestamp authtime, krb5_const_principal principal,
const krb5_keyblock *server, const krb5_keyblock *privsvr);
+/* Allows the appplication to override the profile's allow_weak_crypto setting.
+ * Primarily for use by aklog. */
+krb5_error_code KRB5_CALLCONV
+krb5_allow_weak_crypto(krb5_context context, krb5_boolean enable);
+
#if TARGET_OS_MAC
# pragma pack(pop)
#endif
diff --git a/src/lib/krb5/krb/Makefile.in b/src/lib/krb5/krb/Makefile.in
index d7a4a2d..abab3f0 100644
--- a/src/lib/krb5/krb/Makefile.in
+++ b/src/lib/krb5/krb/Makefile.in
@@ -14,6 +14,7 @@ STLIBOBJS= \
addr_comp.o \
addr_order.o \
addr_srch.o \
+ allow_weak.o \
appdefault.o \
auth_con.o \
authdata.o \
diff --git a/src/lib/krb5/krb/allow_weak.c b/src/lib/krb5/krb/allow_weak.c
new file mode 100644
index 0000000..1290d1f
--- /dev/null
+++ b/src/lib/krb5/krb/allow_weak.c
@@ -0,0 +1,38 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ * lib/krb5/krb/allow_weak.c
+ *
+ * Copyright (C) 2010 by the Massachusetts Institute of Technology.
+ * All rights reserved.
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ *
+ *
+ * Implements krb5_allow_weak_crypto.
+ */
+
+#include "k5-int.h"
+
+krb5_error_code KRB5_CALLCONV
+krb5_allow_weak_crypto(krb5_context context, krb5_boolean enable)
+{
+ context->allow_weak_crypto = (enable != FALSE);
+ return 0;
+}
diff --git a/src/lib/krb5/libkrb5.exports b/src/lib/krb5/libkrb5.exports
index acfa2ea..8d1d9d3 100644
--- a/src/lib/krb5/libkrb5.exports
+++ b/src/lib/krb5/libkrb5.exports
@@ -108,6 +108,7 @@ krb5_524_convert_creds
krb5_address_compare
krb5_address_order
krb5_address_search
+krb5_allow_weak_crypto
krb5_aname_to_localname
krb5_anonymous_principal
krb5_anonymous_realm
commit c1b27b30951a86ff1101cc39ebaeed931aa9c3f7
Author: tlyu <tlyu@dc483132-0cff-0310-8789-dd5450dbe970>
Date: Tue Jan 12 05:03:49 2010 +0000
ticket: 6632
version_fixed: 1.8
status: resolved
pull up r23628 from trunk
------------------------------------------------------------------------
r23628 | ghudson | 2010-01-11 20:05:37 -0500 (Mon, 11 Jan 2010) | 9 lines
ticket: 6632
subject: Simplify and fix FAST check for keyed checksum type
target_version: 1.8
tags: pullup
Use krb5_c_is_keyed_checksum to detect unkeyed checksums when handling
FAST requests. The old check was broken for 1.8 because
krb5_c_verify_checksum got pickier about invalid keyblocks.
git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-8@23649 dc483132-0cff-0310-8789-dd5450dbe970
src/kdc/fast_util.c | 19 ++++---------------
1 files changed, 4 insertions(+), 15 deletions(-)
---
diff --git a/src/kdc/fast_util.c b/src/kdc/fast_util.c
index e6503cf..06b1e2b 100644
--- a/src/kdc/fast_util.c
+++ b/src/kdc/fast_util.c
@@ -133,6 +133,7 @@ kdc_find_fast(krb5_kdc_req **requestptr,
krb5_fast_req * fast_req = NULL;
krb5_kdc_req *request = *requestptr;
krb5_fast_armored_req *fast_armored_req = NULL;
+ krb5_checksum *cksum;
krb5_boolean cksum_valid;
krb5_keyblock empty_keyblock;
@@ -191,11 +192,11 @@ kdc_find_fast(krb5_kdc_req **requestptr,
if (plaintext.data)
free(plaintext.data);
}
+ cksum = &fast_armored_req->req_checksum;
if (retval == 0)
retval = krb5_c_verify_checksum(kdc_context, state->armor_key,
KRB5_KEYUSAGE_FAST_REQ_CHKSUM,
- checksummed_data,
- &fast_armored_req->req_checksum,
+ checksummed_data, cksum,
&cksum_valid);
if (retval == 0 && !cksum_valid) {
retval = KRB5KRB_AP_ERR_MODIFIED;
@@ -203,19 +204,7 @@ kdc_find_fast(krb5_kdc_req **requestptr,
"FAST req_checksum invalid; request modified");
}
if (retval == 0) {
- krb5_error_code ret;
- /*
- * We need to confirm that a keyed checksum is used for the
- * fast_req checksum. In April 2009, the best way to do this is
- * to try verifying the checksum with a keyblock with an zero
- * length; if it succeeds, then an unkeyed checksum is used.
- */
- ret = krb5_c_verify_checksum(kdc_context, &empty_keyblock,
- KRB5_KEYUSAGE_FAST_REQ_CHKSUM,
- checksummed_data,
- &fast_armored_req->req_checksum,
- &cksum_valid);
- if (ret == 0) {
+ if (!krb5_c_is_keyed_cksum(cksum->checksum_type)) {
retval = KRB5KDC_ERR_POLICY;
krb5_set_error_message(kdc_context, KRB5KDC_ERR_POLICY,
"Unkeyed checksum used in fast_req");