summaryrefslogtreecommitdiff
path: root/crypto/ecc.c
diff options
context:
space:
mode:
authorStefan Berger <stefanb@linux.ibm.com>2021-03-17 00:07:32 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2021-03-26 11:41:58 +0300
commit4e6602916bc692ee31ac5b8bd8195fb078556844 (patch)
tree94f5e1d9f2819521eac2590b3dc95490e13e3437 /crypto/ecc.c
parent7547738d28dd572d40e0e1c1f854c80e3cb41bec (diff)
downloadlinux-4e6602916bc692ee31ac5b8bd8195fb078556844.tar.xz
crypto: ecdsa - Add support for ECDSA signature verification
Add support for parsing the parameters of a NIST P256 or NIST P192 key. Enable signature verification using these keys. The new module is enabled with CONFIG_ECDSA: Elliptic Curve Digital Signature Algorithm (NIST P192, P256 etc.) is A NIST cryptographic standard algorithm. Only signature verification is implemented. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-crypto@vger.kernel.org Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/ecc.c')
-rw-r--r--crypto/ecc.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/crypto/ecc.c b/crypto/ecc.c
index c80aa25994a0..25e79fd70566 100644
--- a/crypto/ecc.c
+++ b/crypto/ecc.c
@@ -42,7 +42,7 @@ typedef struct {
u64 m_high;
} uint128_t;
-static inline const struct ecc_curve *ecc_get_curve(unsigned int curve_id)
+const struct ecc_curve *ecc_get_curve(unsigned int curve_id)
{
switch (curve_id) {
/* In FIPS mode only allow P256 and higher */
@@ -54,6 +54,7 @@ static inline const struct ecc_curve *ecc_get_curve(unsigned int curve_id)
return NULL;
}
}
+EXPORT_SYMBOL(ecc_get_curve);
static u64 *ecc_alloc_digits_space(unsigned int ndigits)
{
@@ -1281,16 +1282,6 @@ void ecc_point_mult_shamir(const struct ecc_point *result,
}
EXPORT_SYMBOL(ecc_point_mult_shamir);
-static inline void ecc_swap_digits(const u64 *in, u64 *out,
- unsigned int ndigits)
-{
- const __be64 *src = (__force __be64 *)in;
- int i;
-
- for (i = 0; i < ndigits; i++)
- out[i] = be64_to_cpu(src[ndigits - 1 - i]);
-}
-
static int __ecc_is_key_valid(const struct ecc_curve *curve,
const u64 *private_key, unsigned int ndigits)
{