Commit 3e8ee475 authored by Dr. Stephen Henson's avatar Dr. Stephen Henson
Browse files

Add custom_data field for EC_POINT, EC_KEY. 



In some cases the EC_POINT and EC_KEY BIGNUM components are suboptimal
or inappropriate. Add an "custom_data" field which curves can populate with
a custom structure to suit their needs.

Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
Reviewed-by: default avatarEmilia Käsper <emilia@openssl.org>
parent 6ea04154

crypto/ec/ec_lcl.h

+11 −0
Original line number Diff line number Diff line
@@ -297,6 +297,12 @@ struct ec_key_st { 
    EC_GROUP *group;

    EC_POINT *pub_key;

    BIGNUM *priv_key;

    /*

     * Arbitrary extra data.

     * For example in X25519 this contains the raw private key in a 32 byte

     * buffer.

     */

    void *custom_data;

    unsigned int enc_flag;

    point_conversion_form_t conv_form;

    int references;
@@ -316,6 +322,11 @@ struct ec_point_st { 
                                 * Z) represents (X/Z^2, Y/Z^3) if Z != 0 */

    int Z_is_one;               /* enable optimized point arithmetics for

                                 * special case */

    /*

     * Arbitrary extra data.

     * For example in X25519 this contains the public key in a 32 byte buffer.

     */

    void *custom_data;

} /* EC_POINT */ ;



NISTP224_PRE_COMP *EC_nistp224_pre_comp_dup(NISTP224_PRE_COMP *);