linux-master/crypto/nhpoly1305.c

76 static void process_nh_hash_value(struct nhpoly1305_state *state,
81 	poly1305_core_blocks(&state->poly_state, &key->poly_key, state->nh_hash,
92 static void nhpoly1305_units(struct nhpoly1305_state *state,
99 		if (state->nh_remaining == 0) {
102 			nh_fn(key->nh_key, src, bytes, state->nh_hash);
103 			state->nh_remaining = NH_MESSAGE_BYTES - bytes;
110 			pos = NH_MESSAGE_BYTES - state->nh_remaining;
111 			bytes = min(srclen, state->nh_remaining);
114 				le64_add_cpu(&state->nh_hash[i],
116 			state->nh_remaining -= bytes;
118 		if (state->nh_remaining == 0)
119 			process_nh_hash_value(state, key);
146 	struct nhpoly1305_state *state = shash_desc_ctx(desc);
148 	poly1305_core_init(&state->poly_state);
149 	state->buflen = 0;
150 	state->nh_remaining = 0;
159 	struct nhpoly1305_state *state = shash_desc_ctx(desc);
163 	if (state->buflen) {
164 		bytes = min(srclen, (int)NH_MESSAGE_UNIT - state->buflen);
165 		memcpy(&state->buffer[state->buflen], src, bytes);
166 		state->buflen += bytes;
167 		if (state->buflen < NH_MESSAGE_UNIT)
169 		nhpoly1305_units(state, key, state->buffer, NH_MESSAGE_UNIT,
171 		state->buflen = 0;
178 		nhpoly1305_units(state, key, src, bytes, nh_fn);
184 		memcpy(state->buffer, src, srclen);
185 		state->buflen = srclen;
200 	struct nhpoly1305_state *state = shash_desc_ctx(desc);
203 	if (state->buflen) {
204 		memset(&state->buffer[state->buflen], 0,
205 		       NH_MESSAGE_UNIT - state->buflen);
206 		nhpoly1305_units(state, key, state->buffer, NH_MESSAGE_UNIT,
210 	if (state->nh_remaining)
211 		process_nh_hash_value(state, key);
213 	poly1305_core_emit(&state->poly_state, NULL, dst);