crypto: qat - Switch to new rsa_helper functions

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>

diff --git a/drivers/crypto/qat/Kconfig b/drivers/crypto/qat/Kconfig
index 85b44e5..571d04d 100644 (file)
--- a/drivers/crypto/qat/Kconfig
+++ b/drivers/crypto/qat/Kconfig
@@ -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"

diff --git a/drivers/crypto/qat/qat_common/Makefile b/drivers/crypto/qat/qat_common/Makefile
index 6d74b91..92fb6ff 100644 (file)
--- a/drivers/crypto/qat/qat_common/Makefile
+++ b/drivers/crypto/qat/qat_common/Makefile
@@ -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

diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c
index 05f49d4..04b0ef8 100644 (file)
--- a/drivers/crypto/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -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 */
@@ -625,13 +606,23 @@ 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 */

diff --git a/drivers/crypto/qat/qat_common/qat_rsaprivkey.asn1 b/drivers/crypto/qat/qat_common/qat_rsaprivkey.asn1
deleted file mode 100644 (file)
index f0066ad..0000000
--- a/drivers/crypto/qat/qat_common/qat_rsaprivkey.asn1
+++ /dev/null
@@ -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
-}

diff --git a/drivers/crypto/qat/qat_common/qat_rsapubkey.asn1 b/drivers/crypto/qat/qat_common/qat_rsapubkey.asn1
deleted file mode 100644 (file)
index bd667b3..0000000
--- a/drivers/crypto/qat/qat_common/qat_rsapubkey.asn1
+++ /dev/null
@@ -1,4 +0,0 @@
-RsaPubKey ::= SEQUENCE {
-       n INTEGER ({ qat_rsa_get_n }),
-       e INTEGER ({ qat_rsa_get_e })
-}