2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #ifndef OSSL_CRYPTO_X509_H
11 # define OSSL_CRYPTO_X509_H
14 # include "internal/refcount.h"
15 # include <openssl/asn1.h>
16 # include <openssl/x509.h>
18 /* Internal X509 structures and functions: not for application use */
20 /* Note: unless otherwise stated a field pointer is mandatory and should
21 * never be set to NULL: the ASN.1 code and accessors rely on mandatory
22 * fields never being NULL.
26 * name entry structure, equivalent to AttributeTypeAndValue defined
29 struct X509_name_entry_st {
30 ASN1_OBJECT *object; /* AttributeType */
31 ASN1_STRING *value; /* AttributeValue */
32 int set; /* index of RDNSequence for this entry */
33 int size; /* temp variable */
36 /* Name from RFC 5280. */
38 STACK_OF(X509_NAME_ENTRY) *entries; /* DN components */
39 int modified; /* true if 'bytes' needs to be built */
40 BUF_MEM *bytes; /* cached encoding: cannot be NULL */
41 /* canonical encoding used for rapid Name comparison */
42 unsigned char *canon_enc;
46 /* Signature info structure */
48 struct x509_sig_info_st {
49 /* NID of message digest */
51 /* NID of public key algorithm */
59 /* PKCS#10 certificate request */
61 struct X509_req_info_st {
62 ASN1_ENCODING enc; /* cached encoding of signed part */
63 ASN1_INTEGER *version; /* version, defaults to v1(0) so can be NULL */
64 X509_NAME *subject; /* certificate request DN */
65 X509_PUBKEY *pubkey; /* public key of request */
67 * Zero or more attributes.
68 * NB: although attributes is a mandatory field some broken
69 * encodings omit it so this may be NULL in that case.
71 STACK_OF(X509_ATTRIBUTE) *attributes;
75 X509_REQ_INFO req_info; /* signed certificate request data */
76 X509_ALGOR sig_alg; /* signature algorithm */
77 ASN1_BIT_STRING *signature; /* signature */
78 CRYPTO_REF_COUNT references;
81 /* Set on live certificates for authentication purposes */
82 ASN1_OCTET_STRING *distinguishing_id;
85 struct X509_crl_info_st {
86 ASN1_INTEGER *version; /* version: defaults to v1(0) so may be NULL */
87 X509_ALGOR sig_alg; /* signature algorithm */
88 X509_NAME *issuer; /* CRL issuer name */
89 ASN1_TIME *lastUpdate; /* lastUpdate field */
90 ASN1_TIME *nextUpdate; /* nextUpdate field: optional */
91 STACK_OF(X509_REVOKED) *revoked; /* revoked entries: optional */
92 STACK_OF(X509_EXTENSION) *extensions; /* extensions: optional */
93 ASN1_ENCODING enc; /* encoding of signed portion of CRL */
97 X509_CRL_INFO crl; /* signed CRL data */
98 X509_ALGOR sig_alg; /* CRL signature algorithm */
99 ASN1_BIT_STRING signature; /* CRL signature */
100 CRYPTO_REF_COUNT references;
103 * Cached copies of decoded extension values, since extensions
104 * are optional any of these can be NULL.
106 AUTHORITY_KEYID *akid;
107 ISSUING_DIST_POINT *idp;
108 /* Convenient breakdown of IDP */
111 /* CRL and base CRL numbers for delta processing */
112 ASN1_INTEGER *crl_number;
113 ASN1_INTEGER *base_crl_number;
114 STACK_OF(GENERAL_NAMES) *issuers;
116 unsigned char sha1_hash[SHA_DIGEST_LENGTH];
117 /* alternative method to handle this CRL */
118 const X509_CRL_METHOD *meth;
122 OSSL_LIB_CTX *libctx;
126 struct x509_revoked_st {
127 ASN1_INTEGER serialNumber; /* revoked entry serial number */
128 ASN1_TIME *revocationDate; /* revocation date */
129 STACK_OF(X509_EXTENSION) *extensions; /* CRL entry extensions: optional */
130 /* decoded value of CRLissuer extension: set if indirect CRL */
131 STACK_OF(GENERAL_NAME) *issuer;
132 /* revocation reason: set to CRL_REASON_NONE if reason extension absent */
135 * CRL entries are reordered for faster lookup of serial numbers. This
136 * field contains the original load sequence for this entry.
142 * This stuff is certificate "auxiliary info": it contains details which are
143 * useful in certificate stores and databases. When used this is tagged onto
144 * the end of the certificate itself. OpenSSL specific structure not defined
148 struct x509_cert_aux_st {
149 STACK_OF(ASN1_OBJECT) *trust; /* trusted uses */
150 STACK_OF(ASN1_OBJECT) *reject; /* rejected uses */
151 ASN1_UTF8STRING *alias; /* "friendly name" */
152 ASN1_OCTET_STRING *keyid; /* key id of private key */
153 STACK_OF(X509_ALGOR) *other; /* other unspecified info */
156 struct x509_cinf_st {
157 ASN1_INTEGER *version; /* [ 0 ] default of v1 */
158 ASN1_INTEGER serialNumber;
159 X509_ALGOR signature;
164 ASN1_BIT_STRING *issuerUID; /* [ 1 ] optional in v2 */
165 ASN1_BIT_STRING *subjectUID; /* [ 2 ] optional in v2 */
166 STACK_OF(X509_EXTENSION) *extensions; /* [ 3 ] optional in v3 */
173 ASN1_BIT_STRING signature;
174 X509_SIG_INFO siginf;
175 CRYPTO_REF_COUNT references;
176 CRYPTO_EX_DATA ex_data;
177 /* These contain copies of various extension values */
184 ASN1_OCTET_STRING *skid;
185 AUTHORITY_KEYID *akid;
186 X509_POLICY_CACHE *policy_cache;
187 STACK_OF(DIST_POINT) *crldp;
188 STACK_OF(GENERAL_NAME) *altname;
189 NAME_CONSTRAINTS *nc;
190 # ifndef OPENSSL_NO_RFC3779
191 STACK_OF(IPAddressFamily) *rfc3779_addr;
192 struct ASIdentifiers_st *rfc3779_asid;
194 unsigned char sha1_hash[SHA_DIGEST_LENGTH];
197 volatile int ex_cached;
199 /* Set on live certificates for authentication purposes */
200 ASN1_OCTET_STRING *distinguishing_id;
202 OSSL_LIB_CTX *libctx;
207 * This is a used when verifying cert chains. Since the gathering of the
208 * cert chain can take some time (and have to be 'retried', this needs to be
209 * kept and passed around.
211 struct x509_store_ctx_st { /* X509_STORE_CTX */
213 /* The following are set by the caller */
214 /* The cert to check */
216 /* chain of X509s - untrusted - passed in */
217 STACK_OF(X509) *untrusted;
218 /* set of CRLs passed in */
219 STACK_OF(X509_CRL) *crls;
220 X509_VERIFY_PARAM *param;
221 /* Other info for use with get_issuer() */
223 /* Callbacks for various operations */
224 /* called to verify a certificate */
225 int (*verify) (X509_STORE_CTX *ctx);
227 int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
228 /* get issuers cert from ctx */
229 int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
231 int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
232 /* Check revocation status of chain */
233 int (*check_revocation) (X509_STORE_CTX *ctx);
235 int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
236 /* Check CRL validity */
237 int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
238 /* Check certificate against CRL */
239 int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
240 /* Check policy status of the chain */
241 int (*check_policy) (X509_STORE_CTX *ctx);
242 STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx,
243 const X509_NAME *nm);
244 /* cannot constify 'ctx' param due to lookup_certs_sk() in x509_vfy.c */
245 STACK_OF(X509_CRL) *(*lookup_crls) (const X509_STORE_CTX *ctx,
246 const X509_NAME *nm);
247 int (*cleanup) (X509_STORE_CTX *ctx);
248 /* The following is built up */
249 /* if 0, rebuild chain */
251 /* number of untrusted certs */
253 /* chain of X509s - built up and trusted */
254 STACK_OF(X509) *chain;
255 /* Valid policy tree */
256 X509_POLICY_TREE *tree;
257 /* Require explicit policy value */
259 /* When something goes wrong, this is why */
263 /* cert currently being tested as valid issuer */
264 X509 *current_issuer;
266 X509_CRL *current_crl;
267 /* score of current CRL */
268 int current_crl_score;
270 unsigned int current_reasons;
271 /* For CRL path validation: parent context */
272 X509_STORE_CTX *parent;
273 CRYPTO_EX_DATA ex_data;
275 /* signed via bare TA public key, rather than CA certificate */
278 OSSL_LIB_CTX *libctx;
282 /* PKCS#8 private key info structure */
284 struct pkcs8_priv_key_info_st {
285 ASN1_INTEGER *version;
287 ASN1_OCTET_STRING *pkey;
288 STACK_OF(X509_ATTRIBUTE) *attributes;
293 ASN1_OCTET_STRING *digest;
296 struct x509_object_st {
297 /* one of the above types */
298 X509_LOOKUP_TYPE type;
307 int a2i_ipadd(unsigned char *ipout, const char *ipasc);
308 int x509_set1_time(ASN1_TIME **ptm, const ASN1_TIME *tm);
309 int x509_print_ex_brief(BIO *bio, X509 *cert, unsigned long neg_cflags);
310 int x509v3_cache_extensions(X509 *x);
311 int x509_init_sig_info(X509 *x);
312 int x509_check_issued_int(X509 *issuer, X509 *subject, OSSL_LIB_CTX *libctx,
315 int x509_set0_libctx(X509 *x, OSSL_LIB_CTX *libctx, const char *propq);
316 int x509_crl_set0_libctx(X509_CRL *x, OSSL_LIB_CTX *libctx, const char *propq);
317 int x509_init_sig_info(X509 *x);
318 int asn1_item_digest_ex(const ASN1_ITEM *it, const EVP_MD *type, void *data,
319 unsigned char *md, unsigned int *len,
320 OSSL_LIB_CTX *libctx, const char *propq);
321 int ossl_x509_add_cert_new(STACK_OF(X509) **sk, X509 *cert, int flags);
322 int ossl_x509_add_certs_new(STACK_OF(X509) **p_sk, STACK_OF(X509) *certs,
325 int X509_PUBKEY_get0_libctx(OSSL_LIB_CTX **plibctx, const char **ppropq,
326 const X509_PUBKEY *key);
327 /* Calculate default key identifier according to RFC 5280 section 4.2.1.2 (1) */
328 ASN1_OCTET_STRING *x509_pubkey_hash(X509_PUBKEY *pubkey);