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authorVlad Yasevich <vladislav.yasevich@hp.com>2007-10-09 01:15:59 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:51:29 -0700
commit1f485649f52929d9937b346a920a522a7363e202 (patch)
tree663ac69ba7fff641e243306d7aad5b95378e4d6d /include/net/sctp/constants.h
parentf7b0e93ba1a484700bd1b0e36bdaddaf4eb51b0b (diff)
downloadlinux-1f485649f52929d9937b346a920a522a7363e202.tar.bz2
[SCTP]: Implement SCTP-AUTH internals
This patch implements the internals operations of the AUTH, such as key computation and storage. It also adds necessary variables to the SCTP data structures. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp/constants.h')
-rw-r--r--include/net/sctp/constants.h49
1 files changed, 48 insertions, 1 deletions
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index bb37724495a5..777118f06dba 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -64,12 +64,18 @@ enum { SCTP_DEFAULT_INSTREAMS = SCTP_MAX_STREAM };
#define SCTP_CID_MAX SCTP_CID_ASCONF_ACK
#define SCTP_NUM_BASE_CHUNK_TYPES (SCTP_CID_BASE_MAX + 1)
-#define SCTP_NUM_CHUNK_TYPES (SCTP_NUM_BASE_CHUNKTYPES + 2)
#define SCTP_NUM_ADDIP_CHUNK_TYPES 2
#define SCTP_NUM_PRSCTP_CHUNK_TYPES 1
+#define SCTP_NUM_AUTH_CHUNK_TYPES 1
+
+#define SCTP_NUM_CHUNK_TYPES (SCTP_NUM_BASE_CHUNK_TYPES + \
+ SCTP_NUM_ADDIP_CHUNK_TYPES +\
+ SCTP_NUM_PRSCTP_CHUNK_TYPES +\
+ SCTP_NUM_AUTH_CHUNK_TYPES)
+
/* These are the different flavours of event. */
typedef enum {
@@ -409,4 +415,45 @@ typedef enum {
SCTP_LOWER_CWND_INACTIVE,
} sctp_lower_cwnd_t;
+
+/* SCTP-AUTH Necessary constants */
+
+/* SCTP-AUTH, Section 3.3
+ *
+ * The following Table 2 shows the currently defined values for HMAC
+ * identifiers.
+ *
+ * +-----------------+--------------------------+
+ * | HMAC Identifier | Message Digest Algorithm |
+ * +-----------------+--------------------------+
+ * | 0 | Reserved |
+ * | 1 | SHA-1 defined in [8] |
+ * | 2 | Reserved |
+ * | 3 | SHA-256 defined in [8] |
+ * +-----------------+--------------------------+
+ */
+enum {
+ SCTP_AUTH_HMAC_ID_RESERVED_0,
+ SCTP_AUTH_HMAC_ID_SHA1,
+ SCTP_AUTH_HMAC_ID_RESERVED_2,
+ SCTP_AUTH_HMAC_ID_SHA256
+};
+
+#define SCTP_AUTH_HMAC_ID_MAX SCTP_AUTH_HMAC_ID_SHA256
+#define SCTP_AUTH_NUM_HMACS (SCTP_AUTH_HMAC_ID_SHA256 + 1)
+#define SCTP_SHA1_SIG_SIZE 20
+#define SCTP_SHA256_SIG_SIZE 32
+
+/* SCTP-AUTH, Section 3.2
+ * The chunk types for INIT, INIT-ACK, SHUTDOWN-COMPLETE and AUTH chunks
+ * MUST NOT be listed in the CHUNKS parameter
+ */
+#define SCTP_NUM_NOAUTH_CHUNKS 4
+#define SCTP_AUTH_MAX_CHUNKS (SCTP_NUM_CHUNK_TYPES - SCTP_NUM_NOAUTH_CHUNKS)
+
+/* SCTP-AUTH Section 6.1
+ * The RANDOM parameter MUST contain a 32 byte random number.
+ */
+#define SCTP_AUTH_RANDOM_LENGTH 32
+
#endif /* __sctp_constants_h__ */