csr.h

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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the Apache 2.0 License.
#pragma once
 
#include "ccf/crypto/openssl/openssl_wrappers.h"
#include "ccf/crypto/pem.h"
 
#include <openssl/bio.h>
 
namespace ccf::crypto
{
  inline Pem public_key_pem_from_csr(const Pem& signing_request)
  {
    OpenSSL::Unique_BIO mem(signing_request);
    OpenSSL::Unique_X509_REQ csr(mem);
    OpenSSL::Unique_BIO buf;
 
    EVP_PKEY* req_pubkey = X509_REQ_get0_pubkey(csr);
 
    OpenSSL::CHECK1(PEM_write_bio_PUBKEY(buf, req_pubkey));
 
    BUF_MEM* bptr = nullptr;
    BIO_get_mem_ptr(buf, &bptr);
    return {reinterpret_cast<uint8_t*>(bptr->data), bptr->length};
  }
}