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crypto/qat: fix smaller modulus cases for mod exp

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This patch fixes not working cases when modulus is
smaller than other arguments.

Fixes: 3b78aa7b23 ("crypto/qat: refactor asymmetric crypto functions")

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
This commit is contained in:
Arek Kusztal 2022-03-01 14:16:16 +00:00 committed by Akhil Goyal
parent 8f46d07bce
commit 8545c6d2e2
2 changed files with 25 additions and 11 deletions
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24
drivers/common/qat/qat_adf/qat_pke.h
View File

@ -17,38 +17,44 @@ struct qat_asym_function {
};
static struct qat_asym_function
get_modexp_function(struct rte_crypto_asym_xform *xform)
get_modexp_function2(uint32_t bytesize)
{
struct qat_asym_function qat_function = { };
if (xform->modex.modulus.length <= 64) {
if (bytesize <= 64) {
qat_function.func_id = MATHS_MODEXP_L512;
qat_function.bytesize = 64;
} else if (xform->modex.modulus.length <= 128) {
} else if (bytesize <= 128) {
qat_function.func_id = MATHS_MODEXP_L1024;
qat_function.bytesize = 128;
} else if (xform->modex.modulus.length <= 192) {
} else if (bytesize <= 192) {
qat_function.func_id = MATHS_MODEXP_L1536;
qat_function.bytesize = 192;
} else if (xform->modex.modulus.length <= 256) {
} else if (bytesize <= 256) {
qat_function.func_id = MATHS_MODEXP_L2048;
qat_function.bytesize = 256;
} else if (xform->modex.modulus.length <= 320) {
} else if (bytesize <= 320) {
qat_function.func_id = MATHS_MODEXP_L2560;
qat_function.bytesize = 320;
} else if (xform->modex.modulus.length <= 384) {
} else if (bytesize <= 384) {
qat_function.func_id = MATHS_MODEXP_L3072;
qat_function.bytesize = 384;
} else if (xform->modex.modulus.length <= 448) {
} else if (bytesize <= 448) {
qat_function.func_id = MATHS_MODEXP_L3584;
qat_function.bytesize = 448;
} else if (xform->modex.modulus.length <= 512) {
} else if (bytesize <= 512) {
qat_function.func_id = MATHS_MODEXP_L4096;
qat_function.bytesize = 512;
}
return qat_function;
}
static struct qat_asym_function
get_modexp_function(struct rte_crypto_asym_xform *xform)
{
return get_modexp_function2(xform->modex.modulus.length);
}
static struct qat_asym_function
get_modinv_function(struct rte_crypto_asym_xform *xform)
{

12
drivers/crypto/qat/qat_asym.c
View File

@ -205,7 +205,7 @@ modexp_set_input(struct rte_crypto_asym_op *asym_op,
struct rte_crypto_asym_xform *xform)
{
struct qat_asym_function qat_function;
uint32_t alg_bytesize, func_id;
uint32_t alg_bytesize, func_id, in_bytesize;
int status = 0;
CHECK_IF_NOT_EMPTY(xform->modex.modulus, "mod exp",
@ -215,7 +215,15 @@ modexp_set_input(struct rte_crypto_asym_op *asym_op,
if (status)
return status;
qat_function = get_asym_function(xform);
if (asym_op->modex.base.length > xform->modex.exponent.length &&
asym_op->modex.base.length > xform->modex.modulus.length) {
in_bytesize = asym_op->modex.base.length;
} else if (xform->modex.exponent.length > xform->modex.modulus.length)
in_bytesize = xform->modex.exponent.length;
else
in_bytesize = xform->modex.modulus.length;
qat_function = get_modexp_function2(in_bytesize);
func_id = qat_function.func_id;
if (qat_function.func_id == 0) {
QAT_LOG(ERR, "Cannot obtain functionality id");