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crypto: ecdsa - Register NIST P384 and extend test suite

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Register NIST P384 as an akcipher and extend the testmgr with
NIST P384-specific test vectors.

Summary of changes:

* crypto/ecdsa.c
  - add ecdsa_nist_p384_init_tfm
  - register and unregister P384 tfm

* crypto/testmgr.c
  - add test vector for P384 on vector of tests

* crypto/testmgr.h
  - add test vector params for P384(sha1, sha224, sha256, sha384
    and sha512)

Signed-off-by: Saulo Alessandre <saulo.alessandre@tse.jus.br>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Saulo Alessandre
2021-03-16 17:07:35 -04:00
committed by Herbert Xu
parent 149ca1611d
commit c12d448ba9
3 changed files with 195 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
crypto/ecdsa.c
View File

@@ -122,7 +122,7 @@ static int _ecdsa_verify(struct ecc_ctx *ctx, const u64 *hash, const u64 *r, con
/* res.x = res.x mod n (if res.x > order) */
if (unlikely(vli_cmp(res.x, curve->n, ndigits) == 1))
/* faster alternative for NIST p256 & p192 */
/* faster alternative for NIST p384, p256 & p192 */
vli_sub(res.x, res.x, curve->n, ndigits);
if (!vli_cmp(res.x, r, ndigits))
@@ -265,6 +265,28 @@ static unsigned int ecdsa_max_size(struct crypto_akcipher *tfm)
return ctx->pub_key.ndigits << ECC_DIGITS_TO_BYTES_SHIFT;
}
static int ecdsa_nist_p384_init_tfm(struct crypto_akcipher *tfm)
{
struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm);
return ecdsa_ecc_ctx_init(ctx, ECC_CURVE_NIST_P384);
}
static struct akcipher_alg ecdsa_nist_p384 = {
.verify = ecdsa_verify,
.set_pub_key = ecdsa_set_pub_key,
.max_size = ecdsa_max_size,
.init = ecdsa_nist_p384_init_tfm,
.exit = ecdsa_exit_tfm,
.base = {
.cra_name = "ecdsa-nist-p384",
.cra_driver_name = "ecdsa-nist-p384-generic",
.cra_priority = 100,
.cra_module = THIS_MODULE,
.cra_ctxsize = sizeof(struct ecc_ctx),
},
};
static int ecdsa_nist_p256_init_tfm(struct crypto_akcipher *tfm)
{
struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm);
@@ -321,8 +343,16 @@ static int ecdsa_init(void)
ret = crypto_register_akcipher(&ecdsa_nist_p256);
if (ret)
goto nist_p256_error;
ret = crypto_register_akcipher(&ecdsa_nist_p384);
if (ret)
goto nist_p384_error;
return 0;
nist_p384_error:
crypto_unregister_akcipher(&ecdsa_nist_p256);
nist_p256_error:
if (ecdsa_nist_p192_registered)
crypto_unregister_akcipher(&ecdsa_nist_p192);
@@ -334,6 +364,7 @@ static void ecdsa_exit(void)
if (ecdsa_nist_p192_registered)
crypto_unregister_akcipher(&ecdsa_nist_p192);
crypto_unregister_akcipher(&ecdsa_nist_p256);
crypto_unregister_akcipher(&ecdsa_nist_p384);
}
subsys_initcall(ecdsa_init);