59 mac_setup_by_id(Mac *mac, int which)  in mac_setup_by_id()  argument
62 	mac->type = macs[which].type;  in mac_setup_by_id()
63 	if (mac->type == SSH_EVP) {  in mac_setup_by_id()
64 		mac->evp_md = (*macs[which].mdfunc)();  in mac_setup_by_id()
65 		if ((evp_len = EVP_MD_size(mac->evp_md)) <= 0)  in mac_setup_by_id()
66 			fatal("mac %s len %d", mac->name, evp_len);  in mac_setup_by_id()
67 		mac->key_len = mac->mac_len = (u_int)evp_len;  in mac_setup_by_id()
69 		fatal("wrong MAC type (%d)", mac->type);  in mac_setup_by_id()
71 		mac->mac_len = macs[which].truncatebits / 8;  in mac_setup_by_id()
75 mac_setup(Mac *mac, char *name)  in mac_setup()  argument
81 			if (mac != NULL)  in mac_setup()
82 				mac_setup_by_id(mac, i);  in mac_setup()
92 mac_init(Mac *mac)  in mac_init()  argument
94 	if (mac->key == NULL)  in mac_init()
96 	switch (mac->type) {  in mac_init()
98 		if (mac->evp_md == NULL)  in mac_init()
100 		HMAC_Init(&mac->evp_ctx, mac->key, mac->key_len, mac->evp_md);  in mac_init()
108 mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)  in mac_compute()  argument
113 	if (mac->mac_len > sizeof(m))  in mac_compute()
115 		    mac->mac_len, (u_long)sizeof(m));  in mac_compute()
117 	switch (mac->type) {  in mac_compute()
121 		HMAC_Init(&mac->evp_ctx, NULL, 0, NULL);  in mac_compute()
122 		HMAC_Update(&mac->evp_ctx, b, sizeof(b));  in mac_compute()
123 		HMAC_Update(&mac->evp_ctx, data, datalen);  in mac_compute()
124 		HMAC_Final(&mac->evp_ctx, m, NULL);  in mac_compute()
134 mac_clear(Mac *mac)  in mac_clear()  argument
136 	if (mac->evp_md != NULL)  in mac_clear()
137 		HMAC_cleanup(&mac->evp_ctx);  in mac_clear()
138 	mac->evp_md = NULL;  in mac_clear()