Precompute parts of the signing operation

Synopsis

Declared in <openssl/ec.h>

[[deprecated]]
int
ECDSA_sign_setup(
    EC_KEY* eckey,
    BN_CTX* ctx,
    BIGNUM** kinv,
    BIGNUM** rp);
Warning

Deprecated. Use of this entity is allowed but discouraged.

Return Value

1 on success and 0 otherwise

Parameters

Name

Description

eckey

EC_KEY object containing a private EC key

ctx

BN_CTX object (optional)

kinv

BIGNUM pointer for the inverse of k

rp

BIGNUM pointer for x coordinate of k * generator

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