75 mac_setup_by_id(Mac *mac, int which)  in mac_setup_by_id()  argument
78 	mac->type = macs[which].type;  in mac_setup_by_id()
79 	if (mac->type == SSH_EVP) {  in mac_setup_by_id()
80 		mac->evp_md = (*macs[which].mdfunc)();  in mac_setup_by_id()
81 		if ((evp_len = EVP_MD_size(mac->evp_md)) <= 0)  in mac_setup_by_id()
82 			fatal("mac %s len %d", mac->name, evp_len);  in mac_setup_by_id()
83 		mac->key_len = mac->mac_len = (u_int)evp_len;  in mac_setup_by_id()
85 		mac->mac_len = macs[which].len / 8;  in mac_setup_by_id()
86 		mac->key_len = macs[which].key_len / 8;  in mac_setup_by_id()
87 		mac->umac_ctx = NULL;  in mac_setup_by_id()
90 		mac->mac_len = macs[which].truncatebits / 8;  in mac_setup_by_id()
94 mac_setup(Mac *mac, char *name)  in mac_setup()  argument
100 			if (mac != NULL)  in mac_setup()
101 				mac_setup_by_id(mac, i);  in mac_setup()
111 mac_init(Mac *mac)  in mac_init()  argument
113 	if (mac->key == NULL)  in mac_init()
115 	switch (mac->type) {  in mac_init()
117 		if (mac->evp_md == NULL)  in mac_init()
119 		HMAC_Init(&mac->evp_ctx, mac->key, mac->key_len, mac->evp_md);  in mac_init()
122 		mac->umac_ctx = umac_new(mac->key);  in mac_init()
130 mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)  in mac_compute()  argument
135 	if (mac->mac_len > sizeof(m))  in mac_compute()
137 		    mac->mac_len, (u_long)sizeof(m));  in mac_compute()
139 	switch (mac->type) {  in mac_compute()
143 		HMAC_Init(&mac->evp_ctx, NULL, 0, NULL);  in mac_compute()
144 		HMAC_Update(&mac->evp_ctx, b, sizeof(b));  in mac_compute()
145 		HMAC_Update(&mac->evp_ctx, data, datalen);  in mac_compute()
146 		HMAC_Final(&mac->evp_ctx, m, NULL);  in mac_compute()
150 		umac_update(mac->umac_ctx, data, datalen);  in mac_compute()
151 		umac_final(mac->umac_ctx, m, nonce);  in mac_compute()
160 mac_clear(Mac *mac)  in mac_clear()  argument
162 	if (mac->type == SSH_UMAC) {  in mac_clear()
163 		if (mac->umac_ctx != NULL)  in mac_clear()
164 			umac_delete(mac->umac_ctx);  in mac_clear()
165 	} else if (mac->evp_md != NULL)  in mac_clear()
166 		HMAC_cleanup(&mac->evp_ctx);  in mac_clear()
167 	mac->evp_md = NULL;  in mac_clear()
168 	mac->umac_ctx = NULL;  in mac_clear()