_fallback</i> is NULL, the <i>*md_is_fallback</i> is set to 1 if the hash algorithm used is a fallback, otherwise to 0.</p>

<p>X509_pubkey_digest() returns a digest of the DER representation of the public key in the specified X509 <i>data</i> object.</p>

<p>All other functions described here return a digest of the DER representation of their entire <i>data</i> objects.</p>

<p>The <i>type</i> parameter specifies the digest to be used, such as EVP_sha1(). The <i>md</i> is a pointer to the buffer where the 