114 mac_setup_by_alg(struct sshmac *mac, const struct macalg *macalg)  in mac_setup_by_alg()  argument
116 	mac->type = macalg->type;  in mac_setup_by_alg()
117 	if (mac->type == SSH_DIGEST) {  in mac_setup_by_alg()
118 		if ((mac->hmac_ctx = ssh_hmac_start(macalg->alg)) == NULL)  in mac_setup_by_alg()
120 		mac->key_len = mac->mac_len = ssh_hmac_bytes(macalg->alg);  in mac_setup_by_alg()
122 		mac->mac_len = macalg->len / 8;  in mac_setup_by_alg()
123 		mac->key_len = macalg->key_len / 8;  in mac_setup_by_alg()
124 		mac->umac_ctx = NULL;  in mac_setup_by_alg()
127 		mac->mac_len = macalg->truncatebits / 8;  in mac_setup_by_alg()
128 	mac->etm = macalg->etm;  in mac_setup_by_alg()
133 mac_setup(struct sshmac *mac, char *name)  in mac_setup()  argument
140 		if (mac != NULL)  in mac_setup()
141 			return mac_setup_by_alg(mac, m);  in mac_setup()
148 mac_init(struct sshmac *mac)  in mac_init()  argument
150 	if (mac->key == NULL)  in mac_init()
152 	switch (mac->type) {  in mac_init()
154 		if (mac->hmac_ctx == NULL ||  in mac_init()
155 		    ssh_hmac_init(mac->hmac_ctx, mac->key, mac->key_len) < 0)  in mac_init()
159 		if ((mac->umac_ctx = umac_new(mac->key)) == NULL)  in mac_init()
163 		if ((mac->umac_ctx = umac128_new(mac->key)) == NULL)  in mac_init()
172 mac_compute(struct sshmac *mac, u_int32_t seqno, const u_char *data, int datalen,  in mac_compute()  argument
182 	if (mac->mac_len > sizeof(u))  in mac_compute()
185 	switch (mac->type) {  in mac_compute()
189 		if (ssh_hmac_init(mac->hmac_ctx, NULL, 0) < 0 ||  in mac_compute()
190 		    ssh_hmac_update(mac->hmac_ctx, b, sizeof(b)) < 0 ||  in mac_compute()
191 		    ssh_hmac_update(mac->hmac_ctx, data, datalen) < 0 ||  in mac_compute()
192 		    ssh_hmac_final(mac->hmac_ctx, u.m, sizeof(u.m)) < 0)  in mac_compute()
197 		umac_update(mac->umac_ctx, data, datalen);  in mac_compute()
198 		umac_final(mac->umac_ctx, u.m, nonce);  in mac_compute()
202 		umac128_update(mac->umac_ctx, data, datalen);  in mac_compute()
203 		umac128_final(mac->umac_ctx, u.m, nonce);  in mac_compute()
209 		if (dlen > mac->mac_len)  in mac_compute()
210 			dlen = mac->mac_len;  in mac_compute()
217 mac_clear(struct sshmac *mac)  in mac_clear()  argument
219 	if (mac->type == SSH_UMAC) {  in mac_clear()
220 		if (mac->umac_ctx != NULL)  in mac_clear()
221 			umac_delete(mac->umac_ctx);  in mac_clear()
222 	} else if (mac->type == SSH_UMAC128) {  in mac_clear()
223 		if (mac->umac_ctx != NULL)  in mac_clear()
224 			umac128_delete(mac->umac_ctx);  in mac_clear()
225 	} else if (mac->hmac_ctx != NULL)  in mac_clear()
226 		ssh_hmac_free(mac->hmac_ctx);  in mac_clear()
227 	mac->hmac_ctx = NULL;  in mac_clear()
228 	mac->umac_ctx = NULL;  in mac_clear()