--- /dev/null
+/*****************************************************************************\
+** **
+** PBX4Linux **
+** **
+**---------------------------------------------------------------------------**
+** Copyright: Andreas Eversberg **
+** **
+** crypt header file **
+** **
+\*****************************************************************************/
+
+
+enum { /* enpoint's user states */
+ CRYPT_OFF, /* no encryption */
+ CRYPT_KWAIT, /* wait for key-exchange mehtod */
+ CRYPT_SWAIT, /* wait for shared secret method */
+ CRYPT_ON, /* crypting */
+ CRYPT_RELEASE, /* wait for deactivation */
+};
+
+#define CM_TO_IDENT 10 /* timeout for identifying remote peer */
+#define CM_TO_PUBKEY 60 /* timeout for public key generation */
+#define CM_TO_CSKEY 5 /* timeout for crypting session key */
+
+enum { /* crypt manager states */
+ CM_ST_NULL, /* no encryption used */
+ CM_ST_IDENT, /* find the remote pary */
+ CM_ST_KEYGEN, /* generating public/private key */
+ CM_ST_KEYWAIT, /* waiting for public key */
+ CM_ST_CSKEY, /* generate crypted session key */
+ CM_ST_CSWAIT, /* wait for CSKey */
+ CM_ST_SESSION, /* wait for session key decryption */
+ CM_ST_WAIT_DELAY, /* wait sone time until the cskey is transferred */
+ CM_ST_WAIT_CRYPT, /* wait for encryption from session engine */
+ CM_ST_ACTIVE, /* done with encryption */
+ CM_ST_RELEASE, /* wait until key engine has finished, after abort */
+
+ CM_ST_SWAIT, /* wait for share key establishment */
+ CM_ST_SACTIVE, /* shared key established */
+};
+
+#define CM_ST_NAMES \
+static char *cm_st_name[] = { \
+ "NULL", \
+ "IDENT", \
+ "KEYGEN", \
+ "KEYWAIT", \
+ "CSKEY", \
+ "CSWAIT", \
+ "SESSION", \
+ "WAIT_DELAY", \
+ "WAIT_CRYPT", \
+ "ACTIVE", \
+ "RELEASE", \
+ "SWAIT", \
+ "SACTIVE", \
+}; \
+int cm_st_num = sizeof(cm_st_name) / sizeof(char *);
+
+enum { /* messages */
+ /* messages to/from peer */
+ CP_IDENT, /* send random number, cpu power */
+ CP_SLAVE, /* tell remote to be slave */
+ CP_MASTER, /* tell remote to be master */
+ CP_LOOPED, /* tell remote (us) that the call is looped */
+ CP_PUBKEY, /* send public key */
+ CP_CSKEY, /* send encrypted session key */
+ CP_ABORT, /* send abort message */
+ /* messages to/from "key engine" */
+ CK_GENRSA_REQ, /* generate rsa key */
+ CK_GENRSA_CONF, /* rsa key result */
+ CK_CPTRSA_REQ, /* crypt session key */
+ CK_CPTRSA_CONF, /* session key result */
+ CK_DECRSA_REQ, /* decode session key */
+ CK_DECRSA_CONF, /* session key result */
+ CK_ERROR_IND, /* error of engine */
+ /* messages to/from "crypt engine" */
+ CC_ACTBF_REQ, /* activate blowfish */
+ CC_ACTBF_CONF, /* blowfish activated */
+ CC_ERROR_IND, /* failed to activate session encryption */
+ CC_DACT_REQ, /* deactivate session encryption */
+ /* messages to/from user interface */
+ CU_ACTK_REQ, /* request encryption with key exchange */
+ CU_ACTK_CONF, /* encryption now active */
+ CU_ACTS_REQ, /* request shared key encryption */
+ CU_ACTS_CONF, /* encryption now active */
+ CU_ERROR_IND, /* encryption failed */
+ CU_INFO_REQ, /* info reques */
+ CU_INFO_CONF, /* info to the user*/
+ CU_INFO_IND, /* info to the user*/
+ CU_DACT_REQ, /* deactivate encryption */
+ CU_DACT_CONF, /* encryption now inactive */
+ CU_DACT_IND, /* encryption now inactive */
+ /* messages to/from message transponder */
+ CR_LISTEN_REQ, /* start listening to messages */
+ CR_UNLISTEN_REQ, /* stop listening to messages */
+ CR_MESSAGE_REQ, /* send message */
+ CR_MESSAGE_IND, /* receive message */
+ /* messages from ISDN */
+ CI_DISCONNECT_IND, /* call is disconnected */
+ /* message timeout */
+ CT_TIMEOUT, /* current state timed out */
+};
+
+#define CM_MSG_NAMES \
+static char *cm_msg_name[] = { \
+ "CP_IDENT", \
+ "CP_SLAVE", \
+ "CP_MASTER", \
+ "CP_LOOPED", \
+ "CP_PUBKEY", \
+ "CP_CSKEY", \
+ "CP_ABORT", \
+ "CK_GENRSA_REQ", \
+ "CK_GENRSA_CONF", \
+ "CK_CPTRSA_REQ", \
+ "CK_CPTRSA_CONF", \
+ "CK_DECRSA_REQ", \
+ "CK_DECRSA_CONF", \
+ "CK_ERROR_IND", \
+ "CC_ACTBF_REQ", \
+ "CC_ACTBF_CONF", \
+ "CC_ERROR_IND", \
+ "CC_DACT_REQ", \
+ "CU_ACTK_REQ", \
+ "CU_ACTK_CONF", \
+ "CU_ACTS_REQ", \
+ "CU_ACTS_CONF", \
+ "CU_ERROR_IND", \
+ "CU_INFO_REQ", \
+ "CU_INFO_CONF", \
+ "CU_INFO_IND", \
+ "CU_DACT_REQ", \
+ "CU_DACT_CONF", \
+ "CU_DACT_IND", \
+ "CR_LISTEN_REQ", \
+ "CR_UNLISTEN_REQ", \
+ "CR_MESSAGE_REQ", \
+ "CR_MESSAGE_IND", \
+ "CI_DISCONNECT_IND", \
+ "CT_TIMEOUT", \
+}; \
+int cm_msg_num = sizeof(cm_msg_name) / sizeof(char *);
+
+/* peer2peer messages */
+#define CMSG_IDENT 0x01
+#define CMSG_MASTER 0x11
+#define CMSG_SLAVE 0x12
+#define CMSG_LOOPED 0x13
+#define CMSG_PUBKEY 0x21
+#define CMSG_CSKEY 0x22
+#define CMSG_ABORT 0x81
+
+/* peer2peer info elements */
+#define CM_INFO_MESSAGE 0x01
+#define CM_INFO_RANDOM 0x10
+#define CM_INFO_BOGOMIPS 0x11
+#define CM_INFO_PUBKEY 0x12
+#define CM_INFO_PUBEXPONENT 0x13
+#define CM_INFO_CSKEY 0x14
+
+
+#define CM_ADDINF(a, b, c) \
+ cryptman_addinf(buf, sizeof(buf), a, b, c);
+#define CM_SIZEOFINF(a) \
+ cryptman_sizeofinf(param, a);
+#define CM_GETINF(a, b) \
+ cryptman_getinf(param, a, b);
+
+void crc_init(void);
+unsigned long crc32(unsigned char *data, int len);
+int cryptman_encode_bch(unsigned char *data, int len, unsigned char *buf, int buf_len);
+
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