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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I am looking at porting an application that handles Card Verifiable Certificate (CVC) requests from OpenSSL 1.1.1 to 3.0.8.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The requests are basic PKCS#10 but the public key algorithm uses different OIDs. To deal with this the application creates new objects and registers a new EVP_PKEY_ASN1_METHOD for each, copied from an existing. This
is sufficient for X509_REQ_get_pubkey() to work with OpenSSL 1.1.1. These are the main function calls minus error handling:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OBJ_create("1.3.36.3.5.3.1", "ecc-with-sha256", "ecc-with-sha256");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">meth_default = EVP_PKEY_asn1_find(NULL, NID_X9_62_id_ecPublicKey);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">meth_new = EVP_PKEY_asn1_new(OBJ_txt2nid("ecc-with-sha256"), 0, "EC", "G2 ECC with SHA256");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">EVP_PKEY_asn1_copy(meth_new, meth_default);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">EVP_PKEY_asn1_add0(meth_new);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">pubkey = X509_REQ_get_pubkey(req);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The same code using 3.0.8 gets a decode error from X509_PUBKEY_get0. I assume this has to do with the introduction of providers and decoders in OpenSSL 3. What are my options for treating these CVC public keys like
a regular ecPublicKey? Can I simply add the alternate OIDs to an existing decoder? Do I need to create my own duplicate of an existing decoder?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Andrew.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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