bytes of memory. The parameter <i>type</i> is currently ignored. ECDSA_sign() is wrapper function for ECDSA_sign_ex() with <i>kinv</i> and <i>rp</i> set to NULL.</p>

<p>ECDSA_do_sign() is similar to ECDSA_sign() except the signature is returned as a newly allocated <b>ECDSA_SIG</b> structure (or NULL on error). ECDSA_do_sign() is a wrapper function for ECDSA_do_sign_ex() with <i>kinv</i> and <i>rp</i> set to NULL.</p>

<p>ECDSA_verify() verifies that the signature in <i>sig</i> of size <i>siglen</i> is a v