crypto/krb5: Add some constants out of sunrpc headers

Add some constants from the sunrpc headers.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Chuck Lever <chuck.lever@oracle.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
cc: linux-nfs@vger.kernel.org
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org

diff --git a/include/crypto/krb5.h b/include/crypto/krb5.h
new file mode 100644 (file)
index 0000000..44a6342
--- /dev/null
+++ b/include/crypto/krb5.h
@@ -0,0 +1,51 @@
+/* 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@redhat.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 */