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crypto: qat - Switch to new rsa_helper functions

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Drop all asn1 related code and use the new rsa_helper
functions rsa_parse_[pub|priv]_key for parsing the key

Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Salvatore Benedetto 2016-07-04 10:49:28 +01:00 committed by Herbert Xu
parent 6dd7a82cc5
commit 6889621fd2
5 changed files with 21 additions and 55 deletions
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2
drivers/crypto/qat/Kconfig
View File

@ -5,11 +5,11 @@ config CRYPTO_DEV_QAT
select CRYPTO_BLKCIPHER
select CRYPTO_AKCIPHER
select CRYPTO_HMAC
select CRYPTO_RSA
select CRYPTO_SHA1
select CRYPTO_SHA256
select CRYPTO_SHA512
select FW_LOADER
select ASN1
config CRYPTO_DEV_QAT_DH895xCC
tristate "Support for Intel(R) DH895xCC"

10
drivers/crypto/qat/qat_common/Makefile
View File

@ -1,11 +1,3 @@
$(obj)/qat_rsapubkey-asn1.o: $(obj)/qat_rsapubkey-asn1.c \
$(obj)/qat_rsapubkey-asn1.h
$(obj)/qat_rsaprivkey-asn1.o: $(obj)/qat_rsaprivkey-asn1.c \
$(obj)/qat_rsaprivkey-asn1.h
clean-files += qat_rsapubkey-asn1.c qat_rsapubkey-asn1.h
clean-files += qat_rsaprivkey-asn1.c qat_rsaprivkey-asn1.h
obj-$(CONFIG_CRYPTO_DEV_QAT) += intel_qat.o
intel_qat-objs := adf_cfg.o \
adf_isr.o \
@ -19,8 +11,6 @@ intel_qat-objs := adf_cfg.o \
adf_hw_arbiter.o \
qat_crypto.o \
qat_algs.o \
qat_rsapubkey-asn1.o \
qat_rsaprivkey-asn1.o \
qat_asym_algs.o \
qat_uclo.o \
qat_hal.o

49
drivers/crypto/qat/qat_common/qat_asym_algs.c
View File

@ -52,8 +52,6 @@
#include <linux/dma-mapping.h>
#include <linux/fips.h>
#include <crypto/scatterwalk.h>
#include "qat_rsapubkey-asn1.h"
#include "qat_rsaprivkey-asn1.h"
#include "icp_qat_fw_pke.h"
#include "adf_accel_devices.h"
#include "adf_transport.h"
@ -502,10 +500,8 @@ unmap_src:
return ret;
}
int qat_rsa_get_n(void *context, size_t hdrlen, unsigned char tag,
const void *value, size_t vlen)
int qat_rsa_set_n(struct qat_rsa_ctx *ctx, const char *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;
@ -518,11 +514,6 @@ int qat_rsa_get_n(void *context, size_t hdrlen, unsigned char tag,
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;
@ -540,10 +531,8 @@ err:
return ret;
}
int qat_rsa_get_e(void *context, size_t hdrlen, unsigned char tag,
const void *value, size_t vlen)
int qat_rsa_set_e(struct qat_rsa_ctx *ctx, const char *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;
@ -559,18 +548,15 @@ int qat_rsa_get_e(void *context, size_t hdrlen, unsigned char tag,
}
ctx->e = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_e, GFP_KERNEL);
if (!ctx->e) {
ctx->e = NULL;
if (!ctx->e)
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)
int qat_rsa_set_d(struct qat_rsa_ctx *ctx, const char *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;
@ -585,12 +571,6 @@ int qat_rsa_get_d(void *context, size_t hdrlen, unsigned char tag,
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->d)
@ -608,6 +588,7 @@ static int qat_rsa_setkey(struct crypto_akcipher *tfm, const void *key,
{
struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
struct device *dev = &GET_DEV(ctx->inst->accel_dev);
struct rsa_key rsa_key;
int ret;
/* Free the old key if any */
@ -625,14 +606,24 @@ static int qat_rsa_setkey(struct crypto_akcipher *tfm, const void *key,
ctx->d = NULL;
if (private)
ret = asn1_ber_decoder(&qat_rsaprivkey_decoder, ctx, key,
keylen);
ret = rsa_parse_priv_key(&rsa_key, key, keylen);
else
ret = asn1_ber_decoder(&qat_rsapubkey_decoder, ctx, key,
keylen);
ret = rsa_parse_pub_key(&rsa_key, key, keylen);
if (ret < 0)
goto free;
ret = qat_rsa_set_n(ctx, rsa_key.n, rsa_key.n_sz);
if (ret < 0)
goto free;
ret = qat_rsa_set_e(ctx, rsa_key.e, rsa_key.e_sz);
if (ret < 0)
goto free;
if (private) {
ret = qat_rsa_set_d(ctx, rsa_key.d, rsa_key.d_sz);
if (ret < 0)
goto free;
}
if (!ctx->n || !ctx->e) {
/* invalid key provided */
ret = -EINVAL;

11
drivers/crypto/qat/qat_common/qat_rsaprivkey.asn1
View File

@ -1,11 +0,0 @@
RsaPrivKey ::= SEQUENCE {
version INTEGER,
n INTEGER ({ qat_rsa_get_n }),
e INTEGER ({ qat_rsa_get_e }),
d INTEGER ({ qat_rsa_get_d }),
prime1 INTEGER,
prime2 INTEGER,
exponent1 INTEGER,
exponent2 INTEGER,
coefficient INTEGER
}

4
drivers/crypto/qat/qat_common/qat_rsapubkey.asn1
View File

@ -1,4 +0,0 @@
RsaPubKey ::= SEQUENCE {
n INTEGER ({ qat_rsa_get_n }),
e INTEGER ({ qat_rsa_get_e })
}