106 mac_setup_by_alg(struct sshmac *mac, const struct macalg *macalg)  in mac_setup_by_alg()  argument
108 	mac->type = macalg->type;  in mac_setup_by_alg()
109 	if (mac->type == SSH_DIGEST) {  in mac_setup_by_alg()
110 		if ((mac->hmac_ctx = ssh_hmac_start(macalg->alg)) == NULL)  in mac_setup_by_alg()
112 		mac->key_len = mac->mac_len = ssh_hmac_bytes(macalg->alg);  in mac_setup_by_alg()
114 		mac->mac_len = macalg->len / 8;  in mac_setup_by_alg()
115 		mac->key_len = macalg->key_len / 8;  in mac_setup_by_alg()
116 		mac->umac_ctx = NULL;  in mac_setup_by_alg()
119 		mac->mac_len = macalg->truncatebits / 8;  in mac_setup_by_alg()
120 	mac->etm = macalg->etm;  in mac_setup_by_alg()
125 mac_setup(struct sshmac *mac, char *name)  in mac_setup()  argument
132 		if (mac != NULL)  in mac_setup()
133 			return mac_setup_by_alg(mac, m);  in mac_setup()
140 mac_init(struct sshmac *mac)  in mac_init()  argument
142 	if (mac->key == NULL)  in mac_init()
144 	switch (mac->type) {  in mac_init()
146 		if (mac->hmac_ctx == NULL ||  in mac_init()
147 		    ssh_hmac_init(mac->hmac_ctx, mac->key, mac->key_len) < 0)  in mac_init()
151 		if ((mac->umac_ctx = umac_new(mac->key)) == NULL)  in mac_init()
155 		if ((mac->umac_ctx = umac128_new(mac->key)) == NULL)  in mac_init()
164 mac_compute(struct sshmac *mac, u_int32_t seqno,  in mac_compute()  argument
175 	if (mac->mac_len > sizeof(u))  in mac_compute()
178 	switch (mac->type) {  in mac_compute()
182 		if (ssh_hmac_init(mac->hmac_ctx, NULL, 0) < 0 ||  in mac_compute()
183 		    ssh_hmac_update(mac->hmac_ctx, b, sizeof(b)) < 0 ||  in mac_compute()
184 		    ssh_hmac_update(mac->hmac_ctx, data, datalen) < 0 ||  in mac_compute()
185 		    ssh_hmac_final(mac->hmac_ctx, u.m, sizeof(u.m)) < 0)  in mac_compute()
190 		umac_update(mac->umac_ctx, data, datalen);  in mac_compute()
191 		umac_final(mac->umac_ctx, u.m, nonce);  in mac_compute()
195 		umac128_update(mac->umac_ctx, data, datalen);  in mac_compute()
196 		umac128_final(mac->umac_ctx, u.m, nonce);  in mac_compute()
202 		if (dlen > mac->mac_len)  in mac_compute()
203 			dlen = mac->mac_len;  in mac_compute()
210 mac_check(struct sshmac *mac, u_int32_t seqno,  in mac_check()  argument
217 	if (mac->mac_len > mlen)  in mac_check()
219 	if ((r = mac_compute(mac, seqno, data, dlen,  in mac_check()
222 	if (timingsafe_bcmp(ourmac, theirmac, mac->mac_len) != 0)  in mac_check()
228 mac_clear(struct sshmac *mac)  in mac_clear()  argument
230 	if (mac->type == SSH_UMAC) {  in mac_clear()
231 		if (mac->umac_ctx != NULL)  in mac_clear()
232 			umac_delete(mac->umac_ctx);  in mac_clear()
233 	} else if (mac->type == SSH_UMAC128) {  in mac_clear()
234 		if (mac->umac_ctx != NULL)  in mac_clear()
235 			umac128_delete(mac->umac_ctx);  in mac_clear()
236 	} else if (mac->hmac_ctx != NULL)  in mac_clear()
237 		ssh_hmac_free(mac->hmac_ctx);  in mac_clear()
238 	mac->hmac_ctx = NULL;  in mac_clear()
239 	mac->umac_ctx = NULL;  in mac_clear()