105 			     struct context *c)  in oscore_context_init()  argument
112 		c->cc.aead_alg =  in oscore_context_init()
119 		c->cc.kdf = OSCORE_SHA_256; /*that's the default*/  in oscore_context_init()
122         c->cc.fresh_master_secret_salt = params->fresh_master_secret_salt;  in oscore_context_init()
123 	c->cc.master_secret = params->master_secret;  in oscore_context_init()
124 	c->cc.master_salt = params->master_salt;  in oscore_context_init()
125 	c->cc.id_context = params->id_context;  in oscore_context_init()
126 	c->cc.common_iv.len = sizeof(c->cc.common_iv_buf);  in oscore_context_init()
127 	c->cc.common_iv.ptr = c->cc.common_iv_buf;  in oscore_context_init()
128 	TRY(derive_common_iv(&c->cc));  in oscore_context_init()
131 	c->rc.notification_num_initialized = false;  in oscore_context_init()
132 	server_replay_window_init(&c->rc.replay_window);  in oscore_context_init()
133 	c->rc.recipient_id.len = params->recipient_id.len;  in oscore_context_init()
134 	c->rc.recipient_id.ptr = c->rc.recipient_id_buf;  in oscore_context_init()
135 	memcpy(c->rc.recipient_id.ptr, params->recipient_id.ptr,  in oscore_context_init()
137 	c->rc.recipient_key.len = sizeof(c->rc.recipient_key_buf);  in oscore_context_init()
138 	c->rc.recipient_key.ptr = c->rc.recipient_key_buf;  in oscore_context_init()
139 	TRY(derive_recipient_key(&c->cc, &c->rc));  in oscore_context_init()
142 	c->sc.sender_id = params->sender_id;  in oscore_context_init()
143 	c->sc.sender_key.len = sizeof(c->sc.sender_key_buf);  in oscore_context_init()
144 	c->sc.sender_key.ptr = c->sc.sender_key_buf;  in oscore_context_init()
145 	struct nvm_key_t nvm_key = { .sender_id = c->sc.sender_id,  in oscore_context_init()
146 				     .recipient_id = c->rc.recipient_id,  in oscore_context_init()
147 				     .id_context = c->cc.id_context };  in oscore_context_init()
149 	TRY(ssn_init(&nvm_key, &c->sc.ssn, params->fresh_master_secret_salt));  in oscore_context_init()
150 	TRY(derive_sender_key(&c->cc, &c->sc));  in oscore_context_init()
153 	oscore_interactions_init(c->rrc.interactions);  in oscore_context_init()
154 	c->rrc.nonce.len = sizeof(c->rrc.nonce_buf);  in oscore_context_init()
155 	c->rrc.nonce.ptr = c->rrc.nonce_buf;  in oscore_context_init()
156 	c->rrc.echo_opt_val.len = sizeof(c->rrc.echo_opt_val_buf);  in oscore_context_init()
157 	c->rrc.echo_opt_val.ptr = c->rrc.echo_opt_val_buf;  in oscore_context_init()
160 	c->rrc.echo_state_machine =  in oscore_context_init()
167 enum err check_context_freshness(struct context *c)  in check_context_freshness()  argument
169 	if (NULL == c) {  in check_context_freshness()
176 	if (c->sc.ssn >= OSCORE_SSN_OVERFLOW_VALUE) {  in check_context_freshness()