--- /dev/null
+/*
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+ Copyright(c) 2014 Intel Corporation.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Contact Information:
+ qat-linux@intel.com
+
+ BSD LICENSE
+ Copyright(c) 2014 Intel Corporation.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/module.h>
+#include <crypto/internal/rsa.h>
+#include <crypto/internal/akcipher.h>
+#include <crypto/akcipher.h>
+#include <linux/dma-mapping.h>
+#include <linux/fips.h>
+#include "qat_rsakey-asn1.h"
+#include "icp_qat_fw_pke.h"
+#include "adf_accel_devices.h"
+#include "adf_transport.h"
+#include "adf_common_drv.h"
+#include "qat_crypto.h"
+
+struct qat_rsa_input_params {
+ union {
+ struct {
+ dma_addr_t m;
+ dma_addr_t e;
+ dma_addr_t n;
+ } enc;
+ struct {
+ dma_addr_t c;
+ dma_addr_t d;
+ dma_addr_t n;
+ } dec;
+ u64 in_tab[8];
+ };
+} __packed __aligned(64);
+
+struct qat_rsa_output_params {
+ union {
+ struct {
+ dma_addr_t c;
+ } enc;
+ struct {
+ dma_addr_t m;
+ } dec;
+ u64 out_tab[8];
+ };
+} __packed __aligned(64);
+
+struct qat_rsa_ctx {
+ char *n;
+ char *e;
+ char *d;
+ dma_addr_t dma_n;
+ dma_addr_t dma_e;
+ dma_addr_t dma_d;
+ unsigned int key_sz;
+ struct qat_crypto_instance *inst;
+} __packed __aligned(64);
+
+struct qat_rsa_request {
+ struct qat_rsa_input_params in;
+ struct qat_rsa_output_params out;
+ dma_addr_t phy_in;
+ dma_addr_t phy_out;
+ char *src_align;
+ struct icp_qat_fw_pke_request req;
+ struct qat_rsa_ctx *ctx;
+ int err;
+} __aligned(64);
+
+static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp)
+{
+ struct akcipher_request *areq = (void *)(__force long)resp->opaque;
+ struct qat_rsa_request *req = PTR_ALIGN(akcipher_request_ctx(areq), 64);
+ struct device *dev = &GET_DEV(req->ctx->inst->accel_dev);
+ int err = ICP_QAT_FW_PKE_RESP_PKE_STAT_GET(
+ resp->pke_resp_hdr.comn_resp_flags);
+ char *ptr = areq->dst;
+
+ err = (err == ICP_QAT_FW_COMN_STATUS_FLAG_OK) ? 0 : -EINVAL;
+
+ if (req->src_align)
+ dma_free_coherent(dev, req->ctx->key_sz, req->src_align,
+ req->in.enc.m);
+ else
+ dma_unmap_single(dev, req->in.enc.m, req->ctx->key_sz,
+ DMA_TO_DEVICE);
+
+ dma_unmap_single(dev, req->out.enc.c, req->ctx->key_sz,
+ DMA_FROM_DEVICE);
+ dma_unmap_single(dev, req->phy_in, sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ dma_unmap_single(dev, req->phy_out,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+
+ areq->dst_len = req->ctx->key_sz;
+ /* Need to set the corect length of the output */
+ while (!(*ptr) && areq->dst_len) {
+ areq->dst_len--;
+ ptr++;
+ }
+
+ if (areq->dst_len != req->ctx->key_sz)
+ memcpy(areq->dst, ptr, areq->dst_len);
+
+ akcipher_request_complete(areq, err);
+}
+
+void qat_alg_asym_callback(void *_resp)
+{
+ struct icp_qat_fw_pke_resp *resp = _resp;
+
+ qat_rsa_cb(resp);
+}
+
+#define PKE_RSA_EP_512 0x1c161b21
+#define PKE_RSA_EP_1024 0x35111bf7
+#define PKE_RSA_EP_1536 0x4d111cdc
+#define PKE_RSA_EP_2048 0x6e111dba
+#define PKE_RSA_EP_3072 0x7d111ea3
+#define PKE_RSA_EP_4096 0xa5101f7e
+
+static unsigned long qat_rsa_enc_fn_id(unsigned int len)
+{
+ unsigned int bitslen = len << 3;
+
+ switch (bitslen) {
+ case 512:
+ return PKE_RSA_EP_512;
+ case 1024:
+ return PKE_RSA_EP_1024;
+ case 1536:
+ return PKE_RSA_EP_1536;
+ case 2048:
+ return PKE_RSA_EP_2048;
+ case 3072:
+ return PKE_RSA_EP_3072;
+ case 4096:
+ return PKE_RSA_EP_4096;
+ default:
+ return 0;
+ };
+}
+
+#define PKE_RSA_DP1_512 0x1c161b3c
+#define PKE_RSA_DP1_1024 0x35111c12
+#define PKE_RSA_DP1_1536 0x4d111cf7
+#define PKE_RSA_DP1_2048 0x6e111dda
+#define PKE_RSA_DP1_3072 0x7d111ebe
+#define PKE_RSA_DP1_4096 0xa5101f98
+
+static unsigned long qat_rsa_dec_fn_id(unsigned int len)
+{
+ unsigned int bitslen = len << 3;
+
+ switch (bitslen) {
+ case 512:
+ return PKE_RSA_DP1_512;
+ case 1024:
+ return PKE_RSA_DP1_1024;
+ case 1536:
+ return PKE_RSA_DP1_1536;
+ case 2048:
+ return PKE_RSA_DP1_2048;
+ case 3072:
+ return PKE_RSA_DP1_3072;
+ case 4096:
+ return PKE_RSA_DP1_4096;
+ default:
+ return 0;
+ };
+}
+
+static int qat_rsa_enc(struct akcipher_request *req)
+{
+ struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct qat_crypto_instance *inst = ctx->inst;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ struct qat_rsa_request *qat_req =
+ PTR_ALIGN(akcipher_request_ctx(req), 64);
+ struct icp_qat_fw_pke_request *msg = &qat_req->req;
+ int ret, ctr = 0;
+
+ if (unlikely(!ctx->n || !ctx->e))
+ return -EINVAL;
+
+ if (req->dst_len < ctx->key_sz) {
+ req->dst_len = ctx->key_sz;
+ return -EOVERFLOW;
+ }
+ memset(msg, '\0', sizeof(*msg));
+ ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(msg->pke_hdr,
+ ICP_QAT_FW_COMN_REQ_FLAG_SET);
+ msg->pke_hdr.cd_pars.func_id = qat_rsa_enc_fn_id(ctx->key_sz);
+ if (unlikely(!msg->pke_hdr.cd_pars.func_id))
+ return -EINVAL;
+
+ qat_req->ctx = ctx;
+ msg->pke_hdr.service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_PKE;
+ msg->pke_hdr.comn_req_flags =
+ ICP_QAT_FW_COMN_FLAGS_BUILD(QAT_COMN_PTR_TYPE_FLAT,
+ QAT_COMN_CD_FLD_TYPE_64BIT_ADR);
+
+ qat_req->in.enc.e = ctx->dma_e;
+ qat_req->in.enc.n = ctx->dma_n;
+ ret = -ENOMEM;
+
+ /*
+ * src can be of any size in valid range, but HW expects it to be the
+ * same as modulo n so in case it is different we need to allocate a
+ * new buf and copy src data.
+ * In other case we just need to map the user provided buffer.
+ */
+ if (req->src_len < ctx->key_sz) {
+ int shift = ctx->key_sz - req->src_len;
+
+ qat_req->src_align = dma_zalloc_coherent(dev, ctx->key_sz,
+ &qat_req->in.enc.m,
+ GFP_KERNEL);
+ if (unlikely(!qat_req->src_align))
+ return ret;
+
+ memcpy(qat_req->src_align + shift, req->src, req->src_len);
+ } else {
+ qat_req->src_align = NULL;
+ qat_req->in.enc.m = dma_map_single(dev, req->src, req->src_len,
+ DMA_TO_DEVICE);
+ }
+ qat_req->in.in_tab[3] = 0;
+ qat_req->out.enc.c = dma_map_single(dev, req->dst, req->dst_len,
+ DMA_FROM_DEVICE);
+ qat_req->out.out_tab[1] = 0;
+ qat_req->phy_in = dma_map_single(dev, &qat_req->in.enc.m,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ qat_req->phy_out = dma_map_single(dev, &qat_req->out.enc.c,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+
+ if (unlikely((!qat_req->src_align &&
+ dma_mapping_error(dev, qat_req->in.enc.m)) ||
+ dma_mapping_error(dev, qat_req->out.enc.c) ||
+ dma_mapping_error(dev, qat_req->phy_in) ||
+ dma_mapping_error(dev, qat_req->phy_out)))
+ goto unmap;
+
+ msg->pke_mid.src_data_addr = qat_req->phy_in;
+ msg->pke_mid.dest_data_addr = qat_req->phy_out;
+ msg->pke_mid.opaque = (uint64_t)(__force long)req;
+ msg->input_param_count = 3;
+ msg->output_param_count = 1;
+ do {
+ ret = adf_send_message(ctx->inst->pke_tx, (uint32_t *)msg);
+ } while (ret == -EBUSY && ctr++ < 100);
+
+ if (!ret)
+ return -EINPROGRESS;
+unmap:
+ if (qat_req->src_align)
+ dma_free_coherent(dev, ctx->key_sz, qat_req->src_align,
+ qat_req->in.enc.m);
+ else
+ if (!dma_mapping_error(dev, qat_req->in.enc.m))
+ dma_unmap_single(dev, qat_req->in.enc.m, ctx->key_sz,
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->out.enc.c))
+ dma_unmap_single(dev, qat_req->out.enc.c, ctx->key_sz,
+ DMA_FROM_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_in))
+ dma_unmap_single(dev, qat_req->phy_in,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_out))
+ dma_unmap_single(dev, qat_req->phy_out,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+ return ret;
+}
+
+static int qat_rsa_dec(struct akcipher_request *req)
+{
+ struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct qat_crypto_instance *inst = ctx->inst;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ struct qat_rsa_request *qat_req =
+ PTR_ALIGN(akcipher_request_ctx(req), 64);
+ struct icp_qat_fw_pke_request *msg = &qat_req->req;
+ int ret, ctr = 0;
+
+ if (unlikely(!ctx->n || !ctx->d))
+ return -EINVAL;
+
+ if (req->dst_len < ctx->key_sz) {
+ req->dst_len = ctx->key_sz;
+ return -EOVERFLOW;
+ }
+ memset(msg, '\0', sizeof(*msg));
+ ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(msg->pke_hdr,
+ ICP_QAT_FW_COMN_REQ_FLAG_SET);
+ msg->pke_hdr.cd_pars.func_id = qat_rsa_dec_fn_id(ctx->key_sz);
+ if (unlikely(!msg->pke_hdr.cd_pars.func_id))
+ return -EINVAL;
+
+ qat_req->ctx = ctx;
+ msg->pke_hdr.service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_PKE;
+ msg->pke_hdr.comn_req_flags =
+ ICP_QAT_FW_COMN_FLAGS_BUILD(QAT_COMN_PTR_TYPE_FLAT,
+ QAT_COMN_CD_FLD_TYPE_64BIT_ADR);
+
+ qat_req->in.dec.d = ctx->dma_d;
+ qat_req->in.dec.n = ctx->dma_n;
+ ret = -ENOMEM;
+
+ /*
+ * src can be of any size in valid range, but HW expects it to be the
+ * same as modulo n so in case it is different we need to allocate a
+ * new buf and copy src data.
+ * In other case we just need to map the user provided buffer.
+ */
+ if (req->src_len < ctx->key_sz) {
+ int shift = ctx->key_sz - req->src_len;
+
+ qat_req->src_align = dma_zalloc_coherent(dev, ctx->key_sz,
+ &qat_req->in.dec.c,
+ GFP_KERNEL);
+ if (unlikely(!qat_req->src_align))
+ return ret;
+
+ memcpy(qat_req->src_align + shift, req->src, req->src_len);
+ } else {
+ qat_req->src_align = NULL;
+ qat_req->in.dec.c = dma_map_single(dev, req->src, req->src_len,
+ DMA_TO_DEVICE);
+ }
+ qat_req->in.in_tab[3] = 0;
+ qat_req->out.dec.m = dma_map_single(dev, req->dst, req->dst_len,
+ DMA_FROM_DEVICE);
+ qat_req->out.out_tab[1] = 0;
+ qat_req->phy_in = dma_map_single(dev, &qat_req->in.dec.c,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ qat_req->phy_out = dma_map_single(dev, &qat_req->out.dec.m,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+
+ if (unlikely((!qat_req->src_align &&
+ dma_mapping_error(dev, qat_req->in.dec.c)) ||
+ dma_mapping_error(dev, qat_req->out.dec.m) ||
+ dma_mapping_error(dev, qat_req->phy_in) ||
+ dma_mapping_error(dev, qat_req->phy_out)))
+ goto unmap;
+
+ msg->pke_mid.src_data_addr = qat_req->phy_in;
+ msg->pke_mid.dest_data_addr = qat_req->phy_out;
+ msg->pke_mid.opaque = (uint64_t)(__force long)req;
+ msg->input_param_count = 3;
+ msg->output_param_count = 1;
+ do {
+ ret = adf_send_message(ctx->inst->pke_tx, (uint32_t *)msg);
+ } while (ret == -EBUSY && ctr++ < 100);
+
+ if (!ret)
+ return -EINPROGRESS;
+unmap:
+ if (qat_req->src_align)
+ dma_free_coherent(dev, ctx->key_sz, qat_req->src_align,
+ qat_req->in.dec.c);
+ else
+ if (!dma_mapping_error(dev, qat_req->in.dec.c))
+ dma_unmap_single(dev, qat_req->in.dec.c, ctx->key_sz,
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->out.dec.m))
+ dma_unmap_single(dev, qat_req->out.dec.m, ctx->key_sz,
+ DMA_FROM_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_in))
+ dma_unmap_single(dev, qat_req->phy_in,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_out))
+ dma_unmap_single(dev, qat_req->phy_out,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+ return ret;
+}
+
+int qat_rsa_get_n(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct qat_rsa_ctx *ctx = context;
+ struct qat_crypto_instance *inst = ctx->inst;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ const char *ptr = value;
+ int ret;
+
+ while (!*ptr && vlen) {
+ ptr++;
+ vlen--;
+ }
+
+ ctx->key_sz = vlen;
+ ret = -EINVAL;
+ /* In FIPS mode only allow key size 2K & 3K */
+ if (fips_enabled && (ctx->key_sz != 256 || ctx->key_sz != 384)) {
+ pr_err("QAT: RSA: key size not allowed in FIPS mode\n");
+ goto err;
+ }
+ /* invalid key size provided */
+ if (!qat_rsa_enc_fn_id(ctx->key_sz))
+ goto err;
+
+ ret = -ENOMEM;
+ ctx->n = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_n, GFP_KERNEL);
+ if (!ctx->n)
+ goto err;
+
+ memcpy(ctx->n, ptr, ctx->key_sz);
+ return 0;
+err:
+ ctx->key_sz = 0;
+ ctx->n = NULL;
+ return ret;
+}
+
+int qat_rsa_get_e(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct qat_rsa_ctx *ctx = context;
+ struct qat_crypto_instance *inst = ctx->inst;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ const char *ptr = value;
+
+ while (!*ptr && vlen) {
+ ptr++;
+ vlen--;
+ }
+
+ if (!ctx->key_sz || !vlen || vlen > ctx->key_sz) {
+ ctx->e = NULL;
+ return -EINVAL;
+ }
+
+ ctx->e = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_e, GFP_KERNEL);
+ if (!ctx->e) {
+ ctx->e = NULL;
+ return -ENOMEM;
+ }
+ memcpy(ctx->e + (ctx->key_sz - vlen), ptr, vlen);
+ return 0;
+}
+
+int qat_rsa_get_d(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct qat_rsa_ctx *ctx = context;
+ struct qat_crypto_instance *inst = ctx->inst;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ const char *ptr = value;
+ int ret;
+
+ while (!*ptr && vlen) {
+ ptr++;
+ vlen--;
+ }
+
+ ret = -EINVAL;
+ if (!ctx->key_sz || !vlen || vlen > ctx->key_sz)
+ goto err;
+
+ /* In FIPS mode only allow key size 2K & 3K */
+ if (fips_enabled && (vlen != 256 || vlen != 384)) {
+ pr_err("QAT: RSA: key size not allowed in FIPS mode\n");
+ goto err;
+ }
+
+ ret = -ENOMEM;
+ ctx->d = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_d, GFP_KERNEL);
+ if (!ctx->n)
+ goto err;
+
+ memcpy(ctx->d + (ctx->key_sz - vlen), ptr, vlen);
+ return 0;
+err:
+ ctx->d = NULL;
+ return ret;
+}
+
+static int qat_rsa_setkey(struct crypto_akcipher *tfm, const void *key,
+ unsigned int keylen)
+{
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct device *dev = &GET_DEV(ctx->inst->accel_dev);
+ int ret;
+
+ /* Free the old key if any */
+ if (ctx->n)
+ dma_free_coherent(dev, ctx->key_sz, ctx->n, ctx->dma_n);
+ if (ctx->e)
+ dma_free_coherent(dev, ctx->key_sz, ctx->e, ctx->dma_e);
+ if (ctx->d) {
+ memset(ctx->d, '\0', ctx->key_sz);
+ dma_free_coherent(dev, ctx->key_sz, ctx->d, ctx->dma_d);
+ }
+
+ ctx->n = NULL;
+ ctx->e = NULL;
+ ctx->d = NULL;
+ ret = asn1_ber_decoder(&qat_rsakey_decoder, ctx, key, keylen);
+ if (ret < 0)
+ goto free;
+
+ if (!ctx->n || !ctx->e) {
+ /* invalid key provided */
+ ret = -EINVAL;
+ goto free;
+ }
+
+ return 0;
+free:
+ if (ctx->d) {
+ memset(ctx->d, '\0', ctx->key_sz);
+ dma_free_coherent(dev, ctx->key_sz, ctx->d, ctx->dma_d);
+ ctx->d = NULL;
+ }
+ if (ctx->e) {
+ dma_free_coherent(dev, ctx->key_sz, ctx->e, ctx->dma_e);
+ ctx->e = NULL;
+ }
+ if (ctx->n) {
+ dma_free_coherent(dev, ctx->key_sz, ctx->n, ctx->dma_n);
+ ctx->n = NULL;
+ ctx->key_sz = 0;
+ }
+ return ret;
+}
+
+static int qat_rsa_init_tfm(struct crypto_akcipher *tfm)
+{
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct qat_crypto_instance *inst =
+ qat_crypto_get_instance_node(get_current_node());
+
+ if (!inst)
+ return -EINVAL;
+
+ ctx->key_sz = 0;
+ ctx->inst = inst;
+ return 0;
+}
+
+static void qat_rsa_exit_tfm(struct crypto_akcipher *tfm)
+{
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct device *dev = &GET_DEV(ctx->inst->accel_dev);
+
+ if (ctx->n)
+ dma_free_coherent(dev, ctx->key_sz, ctx->n, ctx->dma_n);
+ if (ctx->e)
+ dma_free_coherent(dev, ctx->key_sz, ctx->e, ctx->dma_e);
+ if (ctx->d) {
+ memset(ctx->d, '\0', ctx->key_sz);
+ dma_free_coherent(dev, ctx->key_sz, ctx->d, ctx->dma_d);
+ }
+ qat_crypto_put_instance(ctx->inst);
+ ctx->n = NULL;
+ ctx->d = NULL;
+ ctx->d = NULL;
+}
+
+static struct akcipher_alg rsa = {
+ .encrypt = qat_rsa_enc,
+ .decrypt = qat_rsa_dec,
+ .sign = qat_rsa_dec,
+ .verify = qat_rsa_enc,
+ .setkey = qat_rsa_setkey,
+ .init = qat_rsa_init_tfm,
+ .exit = qat_rsa_exit_tfm,
+ .reqsize = sizeof(struct qat_rsa_request) + 64,
+ .base = {
+ .cra_name = "rsa",
+ .cra_driver_name = "qat-rsa",
+ .cra_priority = 1000,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct qat_rsa_ctx),
+ },
+};
+
+int qat_asym_algs_register(void)
+{
+ rsa.base.cra_flags = 0;
+ return crypto_register_akcipher(&rsa);
+}
+
+void qat_asym_algs_unregister(void)
+{
+ crypto_unregister_akcipher(&rsa);
+}
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff