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crypto: ecdh - register NIST P384 tfm 

Add ecdh_nist_p384_init_tfm and register and unregister P384 tfm.

Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Hui Tang 2021-05-22 10:44:30 +08:00 committed by Herbert Xu
parent 8fd28fa504
commit 8154132521
1 changed files with 33 additions and 0 deletions
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33
crypto/ecdh.c
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@ -173,6 +173,31 @@ static struct kpp_alg ecdh_nist_p256 = {
},
};
static int ecdh_nist_p384_init_tfm(struct crypto_kpp *tfm)
{
struct ecdh_ctx *ctx = ecdh_get_ctx(tfm);
ctx->curve_id = ECC_CURVE_NIST_P384;
ctx->ndigits = ECC_CURVE_NIST_P384_DIGITS;
return 0;
}
static struct kpp_alg ecdh_nist_p384 = {
.set_secret = ecdh_set_secret,
.generate_public_key = ecdh_compute_value,
.compute_shared_secret = ecdh_compute_value,
.max_size = ecdh_max_size,
.init = ecdh_nist_p384_init_tfm,
.base = {
.cra_name = "ecdh-nist-p384",
.cra_driver_name = "ecdh-nist-p384-generic",
.cra_priority = 100,
.cra_module = THIS_MODULE,
.cra_ctxsize = sizeof(struct ecdh_ctx),
},
};
static bool ecdh_nist_p192_registered;
static int ecdh_init(void)
@ -187,8 +212,15 @@ static int ecdh_init(void)
if (ret)
goto nist_p256_error;
ret = crypto_register_kpp(&ecdh_nist_p384);
if (ret)
goto nist_p384_error;
return 0;
nist_p384_error:
crypto_unregister_kpp(&ecdh_nist_p256);
nist_p256_error:
if (ecdh_nist_p192_registered)
crypto_unregister_kpp(&ecdh_nist_p192);
@ -200,6 +232,7 @@ static void ecdh_exit(void)
if (ecdh_nist_p192_registered)
crypto_unregister_kpp(&ecdh_nist_p192);
crypto_unregister_kpp(&ecdh_nist_p256);
crypto_unregister_kpp(&ecdh_nist_p384);
}
subsys_initcall(ecdh_init);