linux-master/crypto/gcm.c

154 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
158 	memset(pctx->auth_tag, 0, sizeof(pctx->auth_tag));
159 	memcpy(pctx->iv, req->iv, GCM_AES_IV_SIZE);
160 	memcpy(pctx->iv + GCM_AES_IV_SIZE, &counter, 4);
162 	sg_init_table(pctx->src, 3);
163 	sg_set_buf(pctx->src, pctx->auth_tag, sizeof(pctx->auth_tag));
164 	sg = scatterwalk_ffwd(pctx->src + 1, req->src, req->assoclen);
165 	if (sg != pctx->src + 1)
166 		sg_chain(pctx->src, 2, sg);
169 		sg_init_table(pctx->dst, 3);
170 		sg_set_buf(pctx->dst, pctx->auth_tag, sizeof(pctx->auth_tag));
171 		sg = scatterwalk_ffwd(pctx->dst + 1, req->dst, req->assoclen);
172 		if (sg != pctx->dst + 1)
173 			sg_chain(pctx->dst, 2, sg);
182 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
183 	struct skcipher_request *skreq = &pctx->u.skreq;
186 	dst = req->src == req->dst ? pctx->src : pctx->dst;
189 	skcipher_request_set_crypt(skreq, pctx->src, dst,
190 				     cryptlen + sizeof(pctx->auth_tag),
191 				     pctx->iv);
207 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
208 	struct ahash_request *ahreq = &pctx->u.ahreq;
225 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
226 	struct ahash_request *ahreq = &pctx->u.ahreq;
227 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
232 	memcpy(pctx->iauth_tag, &lengths, 16);
233 	sg_init_one(&pctx->sg, pctx->iauth_tag, 16);
235 	ahash_request_set_crypt(ahreq, &pctx->sg,
236 				pctx->iauth_tag, sizeof(lengths));
243 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
244 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
287 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
288 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
317 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
318 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
398 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
399 	struct ahash_request *ahreq = &pctx->u.ahreq;
411 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
413 	u8 *auth_tag = pctx->auth_tag;
415 	crypto_xor(auth_tag, pctx->iauth_tag, 16);
424 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
425 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
427 	gctx->src = sg_next(req->src == req->dst ? pctx->src : pctx->dst);
451 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
452 	struct skcipher_request *skreq = &pctx->u.skreq;
465 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
467 	u8 *auth_tag = pctx->auth_tag;
468 	u8 *iauth_tag = pctx->iauth_tag;
490 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
491 	struct skcipher_request *skreq = &pctx->u.skreq;
492 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
502 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
503 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
512 	gctx->src = sg_next(pctx->src);