diff options
Diffstat (limited to 'crypto/ecdsa.c')
| -rw-r--r-- | crypto/ecdsa.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/crypto/ecdsa.c b/crypto/ecdsa.c index c7fa2c190fdb..1e7b15009bf6 100644 --- a/crypto/ecdsa.c +++ b/crypto/ecdsa.c @@ -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); |