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C

/*
* Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/ocsp.h>
#include "ocsp_local.h"
#include <openssl/asn1t.h>
/* Convert a certificate and its issuer to an OCSP_CERTID */
OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, const X509 *subject,
const X509 *issuer)
{
const X509_NAME *iname;
const ASN1_INTEGER *serial;
ASN1_BIT_STRING *ikey;
if (!dgst)
dgst = EVP_sha1();
if (subject) {
iname = X509_get_issuer_name(subject);
serial = X509_get0_serialNumber(subject);
} else {
iname = X509_get_subject_name(issuer);
serial = NULL;
}
ikey = X509_get0_pubkey_bitstr(issuer);
return OCSP_cert_id_new(dgst, iname, ikey, serial);
}
OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
const X509_NAME *issuerName,
const ASN1_BIT_STRING *issuerKey,
const ASN1_INTEGER *serialNumber)
{
int nid;
unsigned int i;
X509_ALGOR *alg;
OCSP_CERTID *cid = NULL;
unsigned char md[EVP_MAX_MD_SIZE];
if ((cid = OCSP_CERTID_new()) == NULL)
goto err;
alg = &cid->hashAlgorithm;
ASN1_OBJECT_free(alg->algorithm);
if ((nid = EVP_MD_type(dgst)) == NID_undef) {
OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_UNKNOWN_NID);
goto err;
}
if ((alg->algorithm = OBJ_nid2obj(nid)) == NULL)
goto err;
if ((alg->parameter = ASN1_TYPE_new()) == NULL)
goto err;
alg->parameter->type = V_ASN1_NULL;
if (!X509_NAME_digest(issuerName, dgst, md, &i))
goto digerr;
if (!(ASN1_OCTET_STRING_set(&cid->issuerNameHash, md, i)))
goto err;
/* Calculate the issuerKey hash, excluding tag and length */
if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
goto err;
if (!(ASN1_OCTET_STRING_set(&cid->issuerKeyHash, md, i)))
goto err;
if (serialNumber) {
if (ASN1_STRING_copy(&cid->serialNumber, serialNumber) == 0)
goto err;
}
return cid;
digerr:
OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_DIGEST_ERR);
err:
OCSP_CERTID_free(cid);
return NULL;
}
int OCSP_id_issuer_cmp(const OCSP_CERTID *a, const OCSP_CERTID *b)
{
int ret;
ret = OBJ_cmp(a->hashAlgorithm.algorithm, b->hashAlgorithm.algorithm);
if (ret)
return ret;
ret = ASN1_OCTET_STRING_cmp(&a->issuerNameHash, &b->issuerNameHash);
if (ret)
return ret;
return ASN1_OCTET_STRING_cmp(&a->issuerKeyHash, &b->issuerKeyHash);
}
int OCSP_id_cmp(const OCSP_CERTID *a, const OCSP_CERTID *b)
{
int ret;
ret = OCSP_id_issuer_cmp(a, b);
if (ret)
return ret;
return ASN1_INTEGER_cmp(&a->serialNumber, &b->serialNumber);
}
IMPLEMENT_ASN1_DUP_FUNCTION(OCSP_CERTID)