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Add crypto_ec_point_cmp()

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This is needed to allow SAE to check whether ECC elements are identical.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2015-06-23 22:29:23 +03:00
parent 8e2a3a4c21
commit 4e7e68890a
2 changed files with 20 additions and 0 deletions
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11
src/crypto/crypto.h
View File

@ -776,4 +776,15 @@ int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
int crypto_ec_point_is_on_curve(struct crypto_ec *e, int crypto_ec_point_is_on_curve(struct crypto_ec *e,
const struct crypto_ec_point *p); const struct crypto_ec_point *p);
/**
* crypto_ec_point_cmp - Compare two EC points
* @e: EC context from crypto_ec_init()
* @a: EC point
* @b: EC point
* Returns: 0 on equal, non-zero otherwise
*/
int crypto_ec_point_cmp(const struct crypto_ec *e,
const struct crypto_ec_point *a,
const struct crypto_ec_point *b);
#endif /* CRYPTO_H */ #endif /* CRYPTO_H */

9
src/crypto/crypto_openssl.c
View File

@ -1326,4 +1326,13 @@ int crypto_ec_point_is_on_curve(struct crypto_ec *e,
return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p, e->bnctx); return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p, e->bnctx);
} }
int crypto_ec_point_cmp(const struct crypto_ec *e,
const struct crypto_ec_point *a,
const struct crypto_ec_point *b)
{
return EC_POINT_cmp(e->group, (const EC_POINT *) a,
(const EC_POINT *) b, e->bnctx);
}
#endif /* CONFIG_ECC */ #endif /* CONFIG_ECC */