This commit adds modular multiplicative inverse to Intel QuickAssist Technology
driver. For capabilities or limitations refer to qat.rst or
qat_asym_capabilities.h.
Signed-off-by: Arek Kusztal <arkadiuszx.kusz...@intel.com>
---
doc/guides/cryptodevs/qat.rst | 1 +
drivers/crypto/qat/qat_asym.c | 61 ++++++++++++++++++++++++++++++
drivers/crypto/qat/qat_asym.h | 4 ++
drivers/crypto/qat/qat_asym_capabilities.h | 16 ++++++++
4 files changed, 82 insertions(+)
diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst
index 9c0196f..d0f3926 100644
--- a/doc/guides/cryptodevs/qat.rst
+++ b/doc/guides/cryptodevs/qat.rst
@@ -106,6 +106,7 @@ Asymmetric Crypto Service on QAT
The QAT Asym PMD has support for:
* ``Modular exponentiation``
+* ``Modular multiplicative inverse``
Limitations
~~~~~~~~~~~
diff --git a/drivers/crypto/qat/qat_asym.c b/drivers/crypto/qat/qat_asym.c
index 04a35eb..2585ecd 100644
--- a/drivers/crypto/qat/qat_asym.c
+++ b/drivers/crypto/qat/qat_asym.c
@@ -51,6 +51,9 @@ static void qat_asym_build_req_tmpl(void *sess_private_data,
if (xform->xform_type == RTE_CRYPTO_ASYM_XFORM_MODEX) {
qat_req->output_param_count = 1;
qat_req->input_param_count = 3;
+ } else if (xform->xform_type == RTE_CRYPTO_ASYM_XFORM_MODINV) {
+ qat_req->output_param_count = 1;
+ qat_req->input_param_count = 2;
}
}
@@ -157,6 +160,42 @@ qat_asym_build_request(void *in_op,
ctx->sess_alg_params.mod_exp.n.length);
cookie->alg_size = alg_size;
qat_req->pke_hdr.cd_pars.func_id = func_id;
+ } else if (ctx->alg == QAT_PKE_MODINV) {
+ err = qat_asym_check_nonzero(ctx->sess_alg_params.mod_inv.n);
+ if (err)
+ goto error;
+
+ alg_size_in_bytes = max_of(3, asym_op->modinv.base.length,
+ ctx->sess_alg_params.mod_inv.n.length);
+ alg_size = alg_size_in_bytes << 3;
+
+ if (asym_op->modinv.base.data[asym_op->modinv.base.length - 1]
& 0x01) {
+ if (qat_asym_get_sz_and_func_id(MOD_INV_IDS_ODD,
+
sizeof(MOD_INV_IDS_ODD)/sizeof(*MOD_INV_IDS_ODD),
+ &alg_size, &func_id)) {
+ err = QAT_ASYM_ERROR_INVALID_MODINV_PARAM;
+ goto error;
+ }
+ } else {
+ if (qat_asym_get_sz_and_func_id(MOD_INV_IDS_EVEN,
+
sizeof(MOD_INV_IDS_EVEN)/sizeof(*MOD_INV_IDS_EVEN),
+ &alg_size, &func_id)) {
+ err = QAT_ASYM_ERROR_INVALID_MODINV_PARAM;
+ goto error;
+ }
+ }
+
+ alg_size_in_bytes = alg_size >> 3;
+ rte_memcpy(cookie->input_array[0] + alg_size_in_bytes -
+ asym_op->modinv.base.length
+ , asym_op->modinv.base.data,
+ asym_op->modinv.base.length);
+ rte_memcpy(cookie->input_array[1] + alg_size_in_bytes -
+ ctx->sess_alg_params.mod_inv.n.length
+ , ctx->sess_alg_params.mod_inv.n.data,
+ ctx->sess_alg_params.mod_inv.n.length);
+ cookie->alg_size = alg_size;
+ qat_req->pke_hdr.cd_pars.func_id = func_id;
}
return 0;
@@ -217,6 +256,21 @@ qat_asym_process_response(void **op, uint8_t *resp,
memset(cookie->input_array[1], 0x0, alg_size_in_bytes);
memset(cookie->input_array[2], 0x0, alg_size_in_bytes);
memset(cookie->output_array[0], 0x0, alg_size_in_bytes);
+ } else if (ctx->alg == QAT_PKE_MODINV) {
+ alg_size = cookie->alg_size;
+ alg_size_in_bytes = alg_size >> 3;
+ uint8_t *modinv_result = asym_op->modinv.result.data;
+
+ rte_memcpy(modinv_result +
+ (asym_op->modinv.result.length -
ctx->sess_alg_params.mod_inv.n.length),
+ cookie->output_array[0] + alg_size_in_bytes
+ - ctx->sess_alg_params.mod_inv.n.length,
+ ctx->sess_alg_params.mod_inv.n.length
+ );
+
+ memset(cookie->input_array[0], 0x0, alg_size_in_bytes);
+ memset(cookie->input_array[1], 0x0, alg_size_in_bytes);
+ memset(cookie->output_array[0], 0x0, alg_size_in_bytes);
}
}
@@ -243,7 +297,14 @@ qat_asym_session_configure(struct rte_cryptodev *dev,
if (xform->modex.exponent.length == 0 ||
xform->modex.modulus.length == 0)
return -EINVAL;
+ } else if (xform->xform_type == RTE_CRYPTO_ASYM_XFORM_MODINV) {
+ session->sess_alg_params.mod_inv.n = xform->modinv.modulus;
+ session->alg = QAT_PKE_MODINV;
+
+ if (xform->modinv.modulus.length == 0)
+ return -EINVAL;
}
+
qat_asym_build_req_tmpl(sess_private_data, xform);
set_asym_session_private_data(sess, dev->driver_id,
sess_private_data);
diff --git a/drivers/crypto/qat/qat_asym.h b/drivers/crypto/qat/qat_asym.h
index e6c3ce3..f9edfa9 100644
--- a/drivers/crypto/qat/qat_asym.h
+++ b/drivers/crypto/qat/qat_asym.h
@@ -19,6 +19,7 @@ typedef uint64_t large_int_ptr;
#define QAT_ASYM_ERROR_DIVIDE_BY_ZERO 0x01
#define QAT_ASYM_ERROR_INVALID_MODEXP_PARAM 0x02
+#define QAT_ASYM_ERROR_INVALID_MODINV_PARAM 0x04
struct qat_asym_op_cookie {
size_t alg_size;
@@ -48,6 +49,9 @@ struct qat_asym_session {
rte_crypto_param n;
rte_crypto_param e;
} mod_exp;
+ struct {
+ rte_crypto_param n;
+ } mod_inv;
} sess_alg_params;
};
diff --git a/drivers/crypto/qat/qat_asym_capabilities.h
b/drivers/crypto/qat/qat_asym_capabilities.h
index 1d6323f..f43c025 100644
--- a/drivers/crypto/qat/qat_asym_capabilities.h
+++ b/drivers/crypto/qat/qat_asym_capabilities.h
@@ -21,6 +21,22 @@
}
\
},
\
}
\
+ },
\
+ { /* modinv */
\
+ .op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
\
+ {.asym = {
\
+ .xform_capa = {
\
+ .xform_type = RTE_CRYPTO_ASYM_XFORM_MODINV,
\
+ .op_types = 0,
\
+ {
\
+ .modlen = {
\
+ .min = 1,
\
+ .max = 512,
\
+ .increment = 1
\
+ }, }
\
+ }
\
+ },
\
+ }
\
}
\
#endif /* _QAT_ASYM_CAPABILITIES_H_ */
--
2.1.0
