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crypto: kpp - Key-agreement Protocol Primitives API (KPP)

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Add key-agreement protocol primitives (kpp) API which allows to
implement primitives required by protocols such as DH and ECDH.
The API is composed mainly by the following functions
 * set_secret() - It allows the user to set his secret, also
   referred to as his private key, along with the parameters
   known to both parties involved in the key-agreement session.
 * generate_public_key() - It generates the public key to be sent to
   the other counterpart involved in the key-agreement session. The
   function has to be called after set_params() and set_secret()
 * generate_secret() - It generates the shared secret for the session

Other functions such as init() and exit() are provided for allowing
cryptographic hardware to be inizialized properly before use

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
2016-06-22 17:49:13 +01:00
committed by Herbert Xu
parent 331bf739c4
commit 4e5f2c4007
8 changed files with 552 additions and 0 deletions
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20
crypto/crypto_user.c
View File

@@ -28,6 +28,7 @@
#include <crypto/internal/skcipher.h>
#include <crypto/internal/rng.h>
#include <crypto/akcipher.h>
#include <crypto/kpp.h>
#include "internal.h"
@@ -126,6 +127,21 @@ nla_put_failure:
return -EMSGSIZE;
}
static int crypto_report_kpp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_kpp rkpp;
strncpy(rkpp.type, "kpp", sizeof(rkpp.type));
if (nla_put(skb, CRYPTOCFGA_REPORT_KPP,
sizeof(struct crypto_report_kpp), &rkpp))
goto nla_put_failure;
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static int crypto_report_one(struct crypto_alg *alg,
struct crypto_user_alg *ualg, struct sk_buff *skb)
{
@@ -176,6 +192,10 @@ static int crypto_report_one(struct crypto_alg *alg,
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_KPP:
if (crypto_report_kpp(skb, alg))
goto nla_put_failure;
break;
}
out: