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| author | Stefan Berger <stefanb@linux.ibm.com> | 2021-03-16 17:07:32 -0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-03-26 19:41:58 +1100 |
| commit | ef4af956b9d00ac14d554ace5d9d2f517af2d42b (patch) | |
| tree | c9c97c12dcf5c8166b1f10a87a317b5c2f360ba9 /crypto/ecc.c | |
| parent | 6bb62f2b2b65481f232042e2be2de4452e2a7bb1 (diff) | |
| download | linux-crypto-ef4af956b9d00ac14d554ace5d9d2f517af2d42b.tar.gz linux-crypto-ef4af956b9d00ac14d554ace5d9d2f517af2d42b.zip | |
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.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/crypto/ecc.c b/crypto/ecc.c index c80aa259..25e79fd7 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) { |