linux-kernel - [RFC PATCH 1/8] crypto/krb5: Add some constants out of sunrpc headers

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Message-ID: <20250110010313.1471063-2-dhowells@redhat.com>
Date: Fri, 10 Jan 2025 01:03:03 +0000
From: David Howells <dhowells@...hat.com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
	Chuck Lever <chuck.lever@...cle.com>
Cc: David Howells <dhowells@...hat.com>,
	Trond Myklebust <trond.myklebust@...merspace.com>,
	"David S. Miller" <davem@...emloft.net>,
	Marc Dionne <marc.dionne@...istor.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	linux-crypto@...r.kernel.org,
	linux-afs@...ts.infradead.org,
	linux-nfs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [RFC PATCH 1/8] crypto/krb5: Add some constants out of sunrpc headers

Add some constants from the sunrpc headers.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Herbert Xu <herbert@...dor.apana.org.au>
cc: "David S. Miller" <davem@...emloft.net>
cc: Chuck Lever <chuck.lever@...cle.com>
cc: Marc Dionne <marc.dionne@...istor.com>
cc: Eric Dumazet <edumazet@...gle.com>
cc: Jakub Kicinski <kuba@...nel.org>
cc: Paolo Abeni <pabeni@...hat.com>
cc: Simon Horman <horms@...nel.org>
cc: linux-afs@...ts.infradead.org
cc: linux-nfs@...r.kernel.org
cc: linux-crypto@...r.kernel.org
cc: netdev@...r.kernel.org
---
 include/crypto/krb5.h | 50 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 include/crypto/krb5.h

diff --git a/include/crypto/krb5.h b/include/crypto/krb5.h
new file mode 100644
index 000000000000..05e80fad2b38
--- /dev/null
+++ b/include/crypto/krb5.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Kerberos 5 crypto
+ *
+ * Copyright (C) 2025 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ */
+
+#ifndef _CRYPTO_KRB5_H
+#define _CRYPTO_KRB5_H
+
+/* per Kerberos v5 protocol spec crypto types from the wire.
+ * these get mapped to linux kernel crypto routines.
+ */
+#define KRB5_ENCTYPE_NULL			0x0000
+#define KRB5_ENCTYPE_DES_CBC_CRC		0x0001	/* DES cbc mode with CRC-32 */
+#define KRB5_ENCTYPE_DES_CBC_MD4		0x0002	/* DES cbc mode with RSA-MD4 */
+#define KRB5_ENCTYPE_DES_CBC_MD5		0x0003	/* DES cbc mode with RSA-MD5 */
+#define KRB5_ENCTYPE_DES_CBC_RAW		0x0004	/* DES cbc mode raw */
+/* XXX deprecated? */
+#define KRB5_ENCTYPE_DES3_CBC_SHA		0x0005	/* DES-3 cbc mode with NIST-SHA */
+#define KRB5_ENCTYPE_DES3_CBC_RAW		0x0006	/* DES-3 cbc mode raw */
+#define KRB5_ENCTYPE_DES_HMAC_SHA1		0x0008
+#define KRB5_ENCTYPE_DES3_CBC_SHA1		0x0010
+#define KRB5_ENCTYPE_AES128_CTS_HMAC_SHA1_96	0x0011
+#define KRB5_ENCTYPE_AES256_CTS_HMAC_SHA1_96	0x0012
+#define KRB5_ENCTYPE_ARCFOUR_HMAC		0x0017
+#define KRB5_ENCTYPE_ARCFOUR_HMAC_EXP		0x0018
+#define KRB5_ENCTYPE_UNKNOWN			0x01ff
+
+#define KRB5_CKSUMTYPE_CRC32			0x0001
+#define KRB5_CKSUMTYPE_RSA_MD4			0x0002
+#define KRB5_CKSUMTYPE_RSA_MD4_DES		0x0003
+#define KRB5_CKSUMTYPE_DESCBC			0x0004
+#define KRB5_CKSUMTYPE_RSA_MD5			0x0007
+#define KRB5_CKSUMTYPE_RSA_MD5_DES		0x0008
+#define KRB5_CKSUMTYPE_NIST_SHA			0x0009
+#define KRB5_CKSUMTYPE_HMAC_SHA1_DES3		0x000c
+#define KRB5_CKSUMTYPE_HMAC_SHA1_96_AES128	0x000f
+#define KRB5_CKSUMTYPE_HMAC_SHA1_96_AES256	0x0010
+#define KRB5_CKSUMTYPE_HMAC_MD5_ARCFOUR		-138 /* Microsoft md5 hmac cksumtype */
+
+/*
+ * Constants used for key derivation
+ */
+/* from rfc3961 */
+#define KEY_USAGE_SEED_CHECKSUM         (0x99)
+#define KEY_USAGE_SEED_ENCRYPTION       (0xAA)
+#define KEY_USAGE_SEED_INTEGRITY        (0x55)
+
+#endif /* _CRYPTO_KRB5_H */