/* Lets make this into an ASN.1 type structure as follows * SSL_SESSION_ID ::= SEQUENCE { * version INTEGER, -- structure version number * SSLversion INTEGER, -- SSL version number * Cipher OCTET_STRING, -- the 3 byte cipher ID * Session_ID OCTET_STRING, -- the Session ID * Master_key OCTET_STRING, -- the master key * Key_Arg [ 0 ] IMPLICIT OCTET_STRING, -- the optional Key argument * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate * Session_ID_context [ 4 ] EXPLICIT OCTET_STRING, -- the Session ID context * Verify_result [ 5 ] EXPLICIT INTEGER -- X509_V_... code for `Peer' * Compression [6] IMPLICIT ASN1_OBJECT -- compression OID XXXXX * } * Look in ssl/ssl_asn1.c for more details * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). */ typedef struct ssl_session_st { int ssl_version; /* what ssl version session info is * being kept in here? */ /* only really used in SSLv2 */ unsigned int key_arg_length; unsigned char key_arg[SSL_MAX_KEY_ARG_LENGTH]; int master_key_length; unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH]; /* session_id - valid? */ unsigned int session_id_length; unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; /* this is used to determine whether the session is being reused in * the appropriate context. It is up to the application to set this, * via SSL_new */ unsigned int sid_ctx_length; unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; int not_resumable; /* The cert is the certificate used to establish this connection */ struct sess_cert_st /* SESS_CERT */ *sess_cert; /* This is the cert for the other end. * On clients, it will be the same as sess_cert->peer_key->x509 * (the latter is not enough as sess_cert is not retained * in the external representation of sessions, see ssl_asn1.c). */ X509 *peer; /* when app_verify_callback accepts a session where the peer's certificate * is not ok, we must remember the error for session reuse: */ long verify_result; /* only for servers */ int references; long timeout; long time; int compress_meth; /* Need to lookup the method */ SSL_CIPHER *cipher; unsigned long cipher_id; /* when ASN.1 loaded, this * needs to be used to load * the 'cipher' structure */ STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */ CRYPTO_EX_DATA ex_data; /* application specific data */ /* These are used to make removal of session-ids more * efficient and to implement a maximum cache size. */ struct ssl_session_st *prev,*next; } SSL_SESSION;
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