2 * Copyright 2015-2024 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>
17 # include <openssl/conf.h>
18 # include "crypto/types.h"
20 /* Internal X509 structures and functions: not for application use */
22 /* Note: unless otherwise stated a field pointer is mandatory and should
23 * never be set to NULL: the ASN.1 code and accessors rely on mandatory
24 * fields never being NULL.
28 * name entry structure, equivalent to AttributeTypeAndValue defined
31 struct X509_name_entry_st {
32 ASN1_OBJECT *object; /* AttributeType */
33 ASN1_STRING *value; /* AttributeValue */
34 int set; /* index of RDNSequence for this entry */
35 int size; /* temp variable */
38 /* Name from RFC 5280. */
40 STACK_OF(X509_NAME_ENTRY) *entries; /* DN components */
41 int modified; /* true if 'bytes' needs to be built */
42 BUF_MEM *bytes; /* cached encoding: cannot be NULL */
43 /* canonical encoding used for rapid Name comparison */
44 unsigned char *canon_enc;
48 /* Signature info structure */
50 struct x509_sig_info_st {
51 /* NID of message digest */
53 /* NID of public key algorithm */
61 /* PKCS#10 certificate request */
63 struct X509_req_info_st {
64 ASN1_ENCODING enc; /* cached encoding of signed part */
65 ASN1_INTEGER *version; /* version, defaults to v1(0) so can be NULL */
66 X509_NAME *subject; /* certificate request DN */
67 X509_PUBKEY *pubkey; /* public key of request */
69 * Zero or more attributes.
70 * NB: although attributes is a mandatory field some broken
71 * encodings omit it so this may be NULL in that case.
73 STACK_OF(X509_ATTRIBUTE) *attributes;
77 X509_REQ_INFO req_info; /* signed certificate request data */
78 X509_ALGOR sig_alg; /* signature algorithm */
79 ASN1_BIT_STRING *signature; /* signature */
80 CRYPTO_REF_COUNT references;
83 /* Set on live certificates for authentication purposes */
84 ASN1_OCTET_STRING *distinguishing_id;
89 struct X509_crl_info_st {
90 ASN1_INTEGER *version; /* version: defaults to v1(0) so may be NULL */
91 X509_ALGOR sig_alg; /* signature algorithm */
92 X509_NAME *issuer; /* CRL issuer name */
93 ASN1_TIME *lastUpdate; /* lastUpdate field */
94 ASN1_TIME *nextUpdate; /* nextUpdate field: optional */
95 STACK_OF(X509_REVOKED) *revoked; /* revoked entries: optional */
96 STACK_OF(X509_EXTENSION) *extensions; /* extensions: optional */
97 ASN1_ENCODING enc; /* encoding of signed portion of CRL */
101 X509_CRL_INFO crl; /* signed CRL data */
102 X509_ALGOR sig_alg; /* CRL signature algorithm */
103 ASN1_BIT_STRING signature; /* CRL signature */
104 CRYPTO_REF_COUNT references;
107 * Cached copies of decoded extension values, since extensions
108 * are optional any of these can be NULL.
110 AUTHORITY_KEYID *akid;
111 ISSUING_DIST_POINT *idp;
112 /* Convenient breakdown of IDP */
115 /* CRL and base CRL numbers for delta processing */
116 ASN1_INTEGER *crl_number;
117 ASN1_INTEGER *base_crl_number;
118 STACK_OF(GENERAL_NAMES) *issuers;
120 unsigned char sha1_hash[SHA_DIGEST_LENGTH];
121 /* alternative method to handle this CRL */
122 const X509_CRL_METHOD *meth;
126 OSSL_LIB_CTX *libctx;
130 struct x509_revoked_st {
131 ASN1_INTEGER serialNumber; /* revoked entry serial number */
132 ASN1_TIME *revocationDate; /* revocation date */
133 STACK_OF(X509_EXTENSION) *extensions; /* CRL entry extensions: optional */
134 /* decoded value of CRLissuer extension: set if indirect CRL */
135 STACK_OF(GENERAL_NAME) *issuer;
136 /* revocation reason: set to CRL_REASON_NONE if reason extension absent */
139 * CRL entries are reordered for faster lookup of serial numbers. This
140 * field contains the original load sequence for this entry.
146 * This stuff is certificate "auxiliary info": it contains details which are
147 * useful in certificate stores and databases. When used this is tagged onto
148 * the end of the certificate itself. OpenSSL specific structure not defined
152 struct x509_cert_aux_st {
153 STACK_OF(ASN1_OBJECT) *trust; /* trusted uses */
154 STACK_OF(ASN1_OBJECT) *reject; /* rejected uses */
155 ASN1_UTF8STRING *alias; /* "friendly name" */
156 ASN1_OCTET_STRING *keyid; /* key id of private key */
157 STACK_OF(X509_ALGOR) *other; /* other unspecified info */
160 struct x509_cinf_st {
161 ASN1_INTEGER *version; /* [ 0 ] default of v1 */
162 ASN1_INTEGER serialNumber;
163 X509_ALGOR signature;
168 ASN1_BIT_STRING *issuerUID; /* [ 1 ] optional in v2 */
169 ASN1_BIT_STRING *subjectUID; /* [ 2 ] optional in v2 */
170 STACK_OF(X509_EXTENSION) *extensions; /* [ 3 ] optional in v3 */
177 ASN1_BIT_STRING signature;
178 X509_SIG_INFO siginf;
179 CRYPTO_REF_COUNT references;
180 CRYPTO_EX_DATA ex_data;
181 /* These contain copies of various extension values */
188 ASN1_OCTET_STRING *skid;
189 AUTHORITY_KEYID *akid;
190 X509_POLICY_CACHE *policy_cache;
191 STACK_OF(DIST_POINT) *crldp;
192 STACK_OF(GENERAL_NAME) *altname;
193 NAME_CONSTRAINTS *nc;
194 # ifndef OPENSSL_NO_RFC3779
195 STACK_OF(IPAddressFamily) *rfc3779_addr;
196 struct ASIdentifiers_st *rfc3779_asid;
198 unsigned char sha1_hash[SHA_DIGEST_LENGTH];
201 volatile int ex_cached;
203 /* Set on live certificates for authentication purposes */
204 ASN1_OCTET_STRING *distinguishing_id;
206 OSSL_LIB_CTX *libctx;
211 * This is a used when verifying cert chains. Since the gathering of the
212 * cert chain can take some time (and have to be 'retried', this needs to be
213 * kept and passed around.
215 struct x509_store_ctx_st { /* X509_STORE_CTX */
217 /* The following are set by the caller */
218 /* The cert to check */
220 /* chain of X509s - untrusted - passed in */
221 STACK_OF(X509) *untrusted;
222 /* set of CRLs passed in */
223 STACK_OF(X509_CRL) *crls;
224 X509_VERIFY_PARAM *param;
225 /* Other info for use with get_issuer() */
227 /* Callbacks for various operations */
228 /* called to verify a certificate */
229 int (*verify) (X509_STORE_CTX *ctx);
231 int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
232 /* get issuers cert from ctx */
233 int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
235 int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
236 /* Check revocation status of chain */
237 int (*check_revocation) (X509_STORE_CTX *ctx);
239 int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
240 /* Check CRL validity */
241 int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
242 /* Check certificate against CRL */
243 int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
244 /* Check policy status of the chain */
245 int (*check_policy) (X509_STORE_CTX *ctx);
246 STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx,
247 const X509_NAME *nm);
248 /* cannot constify 'ctx' param due to lookup_certs_sk() in x509_vfy.c */
249 STACK_OF(X509_CRL) *(*lookup_crls) (const X509_STORE_CTX *ctx,
250 const X509_NAME *nm);
251 int (*cleanup) (X509_STORE_CTX *ctx);
252 /* The following is built up */
253 /* if 0, rebuild chain */
255 /* number of untrusted certs */
257 /* chain of X509s - built up and trusted */
258 STACK_OF(X509) *chain;
259 /* Valid policy tree */
260 X509_POLICY_TREE *tree;
261 /* Require explicit policy value */
263 /* When something goes wrong, this is why */
267 /* cert currently being tested as valid issuer */
268 X509 *current_issuer;
270 X509_CRL *current_crl;
271 /* score of current CRL */
272 int current_crl_score;
274 unsigned int current_reasons;
275 /* For CRL path validation: parent context */
276 X509_STORE_CTX *parent;
277 CRYPTO_EX_DATA ex_data;
279 /* signed via bare TA public key, rather than CA certificate */
284 OSSL_LIB_CTX *libctx;
288 /* PKCS#8 private key info structure */
290 struct pkcs8_priv_key_info_st {
291 ASN1_INTEGER *version;
293 ASN1_OCTET_STRING *pkey;
294 STACK_OF(X509_ATTRIBUTE) *attributes;
299 ASN1_OCTET_STRING *digest;
302 struct x509_object_st {
303 /* one of the above types */
304 X509_LOOKUP_TYPE type;
313 int ossl_a2i_ipadd(unsigned char *ipout, const char *ipasc);
314 int ossl_x509_set1_time(int *modified, ASN1_TIME **ptm, const ASN1_TIME *tm);
315 int ossl_x509_print_ex_brief(BIO *bio, X509 *cert, unsigned long neg_cflags);
316 int ossl_x509v3_cache_extensions(X509 *x);
317 int ossl_x509_init_sig_info(X509 *x);
319 int ossl_x509_set0_libctx(X509 *x, OSSL_LIB_CTX *libctx, const char *propq);
320 int ossl_x509_crl_set0_libctx(X509_CRL *x, OSSL_LIB_CTX *libctx,
322 int ossl_x509_req_set0_libctx(X509_REQ *x, OSSL_LIB_CTX *libctx,
324 int ossl_asn1_item_digest_ex(const ASN1_ITEM *it, const EVP_MD *type,
325 void *data, unsigned char *md, unsigned int *len,
326 OSSL_LIB_CTX *libctx, const char *propq);
327 int ossl_x509_add_cert_new(STACK_OF(X509) **sk, X509 *cert, int flags);
328 int ossl_x509_add_certs_new(STACK_OF(X509) **p_sk, STACK_OF(X509) *certs,
331 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_dup(const STACK_OF(X509_ATTRIBUTE) *x);
333 int ossl_x509_PUBKEY_get0_libctx(OSSL_LIB_CTX **plibctx, const char **ppropq,
334 const X509_PUBKEY *key);
335 /* Calculate default key identifier according to RFC 5280 section 4.2.1.2 (1) */
336 ASN1_OCTET_STRING *ossl_x509_pubkey_hash(X509_PUBKEY *pubkey);
338 X509_PUBKEY *ossl_d2i_X509_PUBKEY_INTERNAL(const unsigned char **pp,
339 long len, OSSL_LIB_CTX *libctx,
341 void ossl_X509_PUBKEY_INTERNAL_free(X509_PUBKEY *xpub);
343 RSA *ossl_d2i_RSA_PSS_PUBKEY(RSA **a, const unsigned char **pp, long length);
344 int ossl_i2d_RSA_PSS_PUBKEY(const RSA *a, unsigned char **pp);
345 # ifndef OPENSSL_NO_DSA
346 DSA *ossl_d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length);
347 # endif /* OPENSSL_NO_DSA */
348 # ifndef OPENSSL_NO_DH
349 DH *ossl_d2i_DH_PUBKEY(DH **a, const unsigned char **pp, long length);
350 int ossl_i2d_DH_PUBKEY(const DH *a, unsigned char **pp);
351 DH *ossl_d2i_DHx_PUBKEY(DH **a, const unsigned char **pp, long length);
352 int ossl_i2d_DHx_PUBKEY(const DH *a, unsigned char **pp);
353 # endif /* OPENSSL_NO_DH */
354 # ifndef OPENSSL_NO_EC
355 ECX_KEY *ossl_d2i_ED25519_PUBKEY(ECX_KEY **a,
356 const unsigned char **pp, long length);
357 int ossl_i2d_ED25519_PUBKEY(const ECX_KEY *a, unsigned char **pp);
358 ECX_KEY *ossl_d2i_ED448_PUBKEY(ECX_KEY **a,
359 const unsigned char **pp, long length);
360 int ossl_i2d_ED448_PUBKEY(const ECX_KEY *a, unsigned char **pp);
361 ECX_KEY *ossl_d2i_X25519_PUBKEY(ECX_KEY **a,
362 const unsigned char **pp, long length);
363 int ossl_i2d_X25519_PUBKEY(const ECX_KEY *a, unsigned char **pp);
364 ECX_KEY *ossl_d2i_X448_PUBKEY(ECX_KEY **a,
365 const unsigned char **pp, long length);
366 int ossl_i2d_X448_PUBKEY(const ECX_KEY *a, unsigned char **pp);
367 # endif /* OPENSSL_NO_EC */
368 EVP_PKEY *ossl_d2i_PUBKEY_legacy(EVP_PKEY **a, const unsigned char **pp,
370 int ossl_x509_check_private_key(const EVP_PKEY *k, const EVP_PKEY *pkey);
372 int x509v3_add_len_value_uchar(const char *name, const unsigned char *value,
373 size_t vallen, STACK_OF(CONF_VALUE) **extlist);
374 /* Attribute addition functions not checking for duplicate attributes */
375 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
376 X509_ATTRIBUTE *attr);
377 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
378 const ASN1_OBJECT *obj,
380 const unsigned char *bytes,
382 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
384 const unsigned char *bytes,
386 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
387 const char *attrname,
389 const unsigned char *bytes,
391 #endif /* OSSL_CRYPTO_X509_H */