[PATCH v5 2/3] integrity: convert digsig to akcipher api

[Tadeusz Struk]

Convert asymmetric_verify to akcipher api.

Signed-off-by: Tadeusz Struk <tadeusz.st...@intel.com>
---
 security/integrity/Kconfig             |    1 +
 security/integrity/digsig_asymmetric.c |   10 +++-------
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig
index 21d7568..5533a01 100644
--- a/security/integrity/Kconfig
+++ b/security/integrity/Kconfig
@@ -36,6 +36,7 @@ config INTEGRITY_ASYMMETRIC_KEYS
         select ASYMMETRIC_KEY_TYPE
         select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
         select PUBLIC_KEY_ALGO_RSA
+        select CRYPTO_RSA
         select X509_CERTIFICATE_PARSER
        help
          This option enables digital signature verification using
diff --git a/security/integrity/digsig_asymmetric.c 
b/security/integrity/digsig_asymmetric.c
index 5ade2a7..2fa3bc6 100644
--- a/security/integrity/digsig_asymmetric.c
+++ b/security/integrity/digsig_asymmetric.c
@@ -106,13 +106,9 @@ int asymmetric_verify(struct key *keyring, const char *sig,
        pks.pkey_hash_algo = hdr->hash_algo;
        pks.digest = (u8 *)data;
        pks.digest_size = datalen;
-       pks.nr_mpi = 1;
-       pks.rsa.s = mpi_read_raw_data(hdr->sig, siglen);
-
-       if (pks.rsa.s)
-               ret = verify_signature(key, &pks);
-
-       mpi_free(pks.rsa.s);
+       pks.s = hdr->sig;
+       pks.s_size = siglen;
+       ret = verify_signature(key, &pks);
        key_put(key);
        pr_debug("%s() = %d\n", __func__, ret);
        return ret;