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path: root/drivers/crypto/ccree/cc_aead.c
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Diffstat (limited to 'drivers/crypto/ccree/cc_aead.c')
-rw-r--r--drivers/crypto/ccree/cc_aead.c76
1 files changed, 8 insertions, 68 deletions
diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index 7aa4cbe19a86..a9914ea6c95f 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -239,28 +239,13 @@ static void cc_aead_complete(struct device *dev, void *cc_req, int err)
cc_zero_sgl(areq->dst, areq_ctx->cryptlen);
err = -EBADMSG;
}
- } else { /*ENCRYPT*/
- if (areq_ctx->is_icv_fragmented) {
- u32 skip = areq->cryptlen + areq_ctx->dst_offset;
-
- cc_copy_sg_portion(dev, areq_ctx->mac_buf,
- areq_ctx->dst_sgl, skip,
- (skip + ctx->authsize),
- CC_SG_FROM_BUF);
- }
+ /*ENCRYPT*/
+ } else if (areq_ctx->is_icv_fragmented) {
+ u32 skip = areq->cryptlen + areq_ctx->dst_offset;
- /* If an IV was generated, copy it back to the user provided
- * buffer.
- */
- if (areq_ctx->backup_giv) {
- if (ctx->cipher_mode == DRV_CIPHER_CTR)
- memcpy(areq_ctx->backup_giv, areq_ctx->ctr_iv +
- CTR_RFC3686_NONCE_SIZE,
- CTR_RFC3686_IV_SIZE);
- else if (ctx->cipher_mode == DRV_CIPHER_CCM)
- memcpy(areq_ctx->backup_giv, areq_ctx->ctr_iv +
- CCM_BLOCK_IV_OFFSET, CCM_BLOCK_IV_SIZE);
- }
+ cc_copy_sg_portion(dev, areq_ctx->mac_buf, areq_ctx->dst_sgl,
+ skip, (skip + ctx->authsize),
+ CC_SG_FROM_BUF);
}
done:
aead_request_complete(areq, err);
@@ -1975,9 +1960,8 @@ static int cc_proc_aead(struct aead_request *req,
*/
memcpy(areq_ctx->ctr_iv, ctx->ctr_nonce,
CTR_RFC3686_NONCE_SIZE);
- if (!areq_ctx->backup_giv) /*User none-generated IV*/
- memcpy(areq_ctx->ctr_iv + CTR_RFC3686_NONCE_SIZE,
- req->iv, CTR_RFC3686_IV_SIZE);
+ memcpy(areq_ctx->ctr_iv + CTR_RFC3686_NONCE_SIZE, req->iv,
+ CTR_RFC3686_IV_SIZE);
/* Initialize counter portion of counter block */
*(__be32 *)(areq_ctx->ctr_iv + CTR_RFC3686_NONCE_SIZE +
CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
@@ -2023,40 +2007,6 @@ static int cc_proc_aead(struct aead_request *req,
goto exit;
}
- /* do we need to generate IV? */
- if (areq_ctx->backup_giv) {
- /* set the DMA mapped IV address*/
- if (ctx->cipher_mode == DRV_CIPHER_CTR) {
- cc_req.ivgen_dma_addr[0] =
- areq_ctx->gen_ctx.iv_dma_addr +
- CTR_RFC3686_NONCE_SIZE;
- cc_req.ivgen_dma_addr_len = 1;
- } else if (ctx->cipher_mode == DRV_CIPHER_CCM) {
- /* In ccm, the IV needs to exist both inside B0 and
- * inside the counter.It is also copied to iv_dma_addr
- * for other reasons (like returning it to the user).
- * So, using 3 (identical) IV outputs.
- */
- cc_req.ivgen_dma_addr[0] =
- areq_ctx->gen_ctx.iv_dma_addr +
- CCM_BLOCK_IV_OFFSET;
- cc_req.ivgen_dma_addr[1] =
- sg_dma_address(&areq_ctx->ccm_adata_sg) +
- CCM_B0_OFFSET + CCM_BLOCK_IV_OFFSET;
- cc_req.ivgen_dma_addr[2] =
- sg_dma_address(&areq_ctx->ccm_adata_sg) +
- CCM_CTR_COUNT_0_OFFSET + CCM_BLOCK_IV_OFFSET;
- cc_req.ivgen_dma_addr_len = 3;
- } else {
- cc_req.ivgen_dma_addr[0] =
- areq_ctx->gen_ctx.iv_dma_addr;
- cc_req.ivgen_dma_addr_len = 1;
- }
-
- /* set the IV size (8/16 B long)*/
- cc_req.ivgen_size = crypto_aead_ivsize(tfm);
- }
-
/* STAT_PHASE_2: Create sequence */
/* Load MLLI tables to SRAM if necessary */
@@ -2107,7 +2057,6 @@ static int cc_aead_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = false;
areq_ctx->plaintext_authenticate_only = false;
@@ -2139,7 +2088,6 @@ static int cc_rfc4309_ccm_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = true;
cc_proc_rfc4309_ccm(req);
@@ -2161,7 +2109,6 @@ static int cc_aead_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = false;
areq_ctx->plaintext_authenticate_only = false;
@@ -2191,7 +2138,6 @@ static int cc_rfc4309_ccm_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = true;
cc_proc_rfc4309_ccm(req);
@@ -2311,8 +2257,6 @@ static int cc_rfc4106_gcm_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
-
areq_ctx->plaintext_authenticate_only = false;
cc_proc_rfc4_gcm(req);
@@ -2340,7 +2284,6 @@ static int cc_rfc4543_gcm_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
cc_proc_rfc4_gcm(req);
areq_ctx->is_gcm4543 = true;
@@ -2372,8 +2315,6 @@ static int cc_rfc4106_gcm_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
-
areq_ctx->plaintext_authenticate_only = false;
cc_proc_rfc4_gcm(req);
@@ -2401,7 +2342,6 @@ static int cc_rfc4543_gcm_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
- areq_ctx->backup_giv = NULL;
cc_proc_rfc4_gcm(req);
areq_ctx->is_gcm4543 = true;
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-03 14:25:00 +0100