/* * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project * 2013. */ /* ==================================================================== * Copyright (c) 2013 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #ifndef OPENSSL_HEADER_X509_INTERNAL_H #define OPENSSL_HEADER_X509_INTERNAL_H #include #include #include #include "../asn1/internal.h" #if defined(__cplusplus) extern "C" { #endif /* Internal structures. */ typedef struct X509_val_st { ASN1_TIME *notBefore; ASN1_TIME *notAfter; } X509_VAL; DECLARE_ASN1_FUNCTIONS(X509_VAL) struct X509_pubkey_st { X509_ALGOR *algor; ASN1_BIT_STRING *public_key; EVP_PKEY *pkey; } /* X509_PUBKEY */; struct X509_name_entry_st { ASN1_OBJECT *object; ASN1_STRING *value; int set; } /* X509_NAME_ENTRY */; // we always keep X509_NAMEs in 2 forms. struct X509_name_st { STACK_OF(X509_NAME_ENTRY) *entries; int modified; // true if 'bytes' needs to be built BUF_MEM *bytes; // unsigned long hash; Keep the hash around for lookups unsigned char *canon_enc; int canon_enclen; } /* X509_NAME */; struct x509_attributes_st { ASN1_OBJECT *object; STACK_OF(ASN1_TYPE) *set; } /* X509_ATTRIBUTE */; struct x509_cert_aux_st { STACK_OF(ASN1_OBJECT) *trust; // trusted uses STACK_OF(ASN1_OBJECT) *reject; // rejected uses ASN1_UTF8STRING *alias; // "friendly name" ASN1_OCTET_STRING *keyid; // key id of private key STACK_OF(X509_ALGOR) *other; // other unspecified info } /* X509_CERT_AUX */; struct X509_extension_st { ASN1_OBJECT *object; ASN1_BOOLEAN critical; ASN1_OCTET_STRING *value; } /* X509_EXTENSION */; typedef struct { ASN1_INTEGER *version; // [ 0 ] default of v1 ASN1_INTEGER *serialNumber; X509_ALGOR *signature; X509_NAME *issuer; X509_VAL *validity; X509_NAME *subject; X509_PUBKEY *key; ASN1_BIT_STRING *issuerUID; // [ 1 ] optional in v2 ASN1_BIT_STRING *subjectUID; // [ 2 ] optional in v2 STACK_OF(X509_EXTENSION) *extensions; // [ 3 ] optional in v3 ASN1_ENCODING enc; } X509_CINF; DECLARE_ASN1_FUNCTIONS(X509_CINF) struct x509_st { X509_CINF *cert_info; X509_ALGOR *sig_alg; ASN1_BIT_STRING *signature; CRYPTO_refcount_t references; CRYPTO_EX_DATA ex_data; // These contain copies of various extension values long ex_pathlen; long ex_pcpathlen; unsigned long ex_flags; unsigned long ex_kusage; unsigned long ex_xkusage; unsigned long ex_nscert; ASN1_OCTET_STRING *skid; AUTHORITY_KEYID *akid; X509_POLICY_CACHE *policy_cache; STACK_OF(DIST_POINT) *crldp; STACK_OF(GENERAL_NAME) *altname; NAME_CONSTRAINTS *nc; unsigned char sha1_hash[SHA_DIGEST_LENGTH]; X509_CERT_AUX *aux; CRYPTO_BUFFER *buf; CRYPTO_MUTEX lock; } /* X509 */; typedef struct { ASN1_ENCODING enc; ASN1_INTEGER *version; X509_NAME *subject; X509_PUBKEY *pubkey; // d=2 hl=2 l= 0 cons: cont: 00 STACK_OF(X509_ATTRIBUTE) *attributes; // [ 0 ] } X509_REQ_INFO; DECLARE_ASN1_FUNCTIONS(X509_REQ_INFO) struct X509_req_st { X509_REQ_INFO *req_info; X509_ALGOR *sig_alg; ASN1_BIT_STRING *signature; CRYPTO_refcount_t references; } /* X509_REQ */; typedef struct { ASN1_INTEGER *version; X509_ALGOR *sig_alg; X509_NAME *issuer; ASN1_TIME *lastUpdate; ASN1_TIME *nextUpdate; STACK_OF(X509_REVOKED) *revoked; STACK_OF(X509_EXTENSION) /* [0] */ *extensions; ASN1_ENCODING enc; } X509_CRL_INFO; DECLARE_ASN1_FUNCTIONS(X509_CRL_INFO) struct X509_crl_st { // actual signature X509_CRL_INFO *crl; X509_ALGOR *sig_alg; ASN1_BIT_STRING *signature; CRYPTO_refcount_t references; int flags; // Copies of various extensions AUTHORITY_KEYID *akid; ISSUING_DIST_POINT *idp; // Convenient breakdown of IDP int idp_flags; int idp_reasons; // CRL and base CRL numbers for delta processing ASN1_INTEGER *crl_number; ASN1_INTEGER *base_crl_number; unsigned char sha1_hash[SHA_DIGEST_LENGTH]; STACK_OF(GENERAL_NAMES) *issuers; const X509_CRL_METHOD *meth; void *meth_data; } /* X509_CRL */; struct X509_VERIFY_PARAM_st { char *name; time_t check_time; // Time to use unsigned long inh_flags; // Inheritance flags unsigned long flags; // Various verify flags int purpose; // purpose to check untrusted certificates int trust; // trust setting to check int depth; // Verify depth STACK_OF(ASN1_OBJECT) *policies; // Permissible policies // The following fields specify acceptable peer identities. STACK_OF(OPENSSL_STRING) *hosts; // Set of acceptable names unsigned int hostflags; // Flags to control matching features char *peername; // Matching hostname in peer certificate char *email; // If not NULL email address to match size_t emaillen; unsigned char *ip; // If not NULL IP address to match size_t iplen; // Length of IP address unsigned char poison; // Fail all verifications at name checking } /* X509_VERIFY_PARAM */; struct x509_object_st { // one of the above types int type; union { char *ptr; X509 *x509; X509_CRL *crl; EVP_PKEY *pkey; } data; } /* X509_OBJECT */; // This is a static that defines the function interface struct x509_lookup_method_st { const char *name; int (*new_item)(X509_LOOKUP *ctx); void (*free)(X509_LOOKUP *ctx); int (*init)(X509_LOOKUP *ctx); int (*shutdown)(X509_LOOKUP *ctx); int (*ctrl)(X509_LOOKUP *ctx, int cmd, const char *argc, long argl, char **ret); int (*get_by_subject)(X509_LOOKUP *ctx, int type, X509_NAME *name, X509_OBJECT *ret); int (*get_by_issuer_serial)(X509_LOOKUP *ctx, int type, X509_NAME *name, ASN1_INTEGER *serial, X509_OBJECT *ret); int (*get_by_fingerprint)(X509_LOOKUP *ctx, int type, unsigned char *bytes, int len, X509_OBJECT *ret); int (*get_by_alias)(X509_LOOKUP *ctx, int type, char *str, int len, X509_OBJECT *ret); } /* X509_LOOKUP_METHOD */; // This is used to hold everything. It is used for all certificate // validation. Once we have a certificate chain, the 'verify' // function is then called to actually check the cert chain. struct x509_store_st { // The following is a cache of trusted certs int cache; // if true, stash any hits STACK_OF(X509_OBJECT) *objs; // Cache of all objects CRYPTO_MUTEX objs_lock; // These are external lookup methods STACK_OF(X509_LOOKUP) *get_cert_methods; X509_VERIFY_PARAM *param; // Callbacks for various operations X509_STORE_CTX_verify_fn verify; // called to verify a certificate X509_STORE_CTX_verify_cb verify_cb; // error callback X509_STORE_CTX_get_issuer_fn get_issuer; // get issuers cert from ctx X509_STORE_CTX_check_issued_fn check_issued; // check issued X509_STORE_CTX_check_revocation_fn check_revocation; // Check revocation status of chain X509_STORE_CTX_get_crl_fn get_crl; // retrieve CRL X509_STORE_CTX_check_crl_fn check_crl; // Check CRL validity X509_STORE_CTX_cert_crl_fn cert_crl; // Check certificate against CRL X509_STORE_CTX_lookup_certs_fn lookup_certs; X509_STORE_CTX_lookup_crls_fn lookup_crls; X509_STORE_CTX_cleanup_fn cleanup; CRYPTO_refcount_t references; } /* X509_STORE */; // This is the functions plus an instance of the local variables. struct x509_lookup_st { int init; // have we been started int skip; // don't use us. X509_LOOKUP_METHOD *method; // the functions char *method_data; // method data X509_STORE *store_ctx; // who owns us } /* X509_LOOKUP */; // This is a used when verifying cert chains. Since the // gathering of the cert chain can take some time (and have to be // 'retried', this needs to be kept and passed around. struct x509_store_ctx_st { X509_STORE *ctx; // The following are set by the caller X509 *cert; // The cert to check STACK_OF(X509) *untrusted; // chain of X509s - untrusted - passed in STACK_OF(X509_CRL) *crls; // set of CRLs passed in X509_VERIFY_PARAM *param; void *other_ctx; // Other info for use with get_issuer() // Callbacks for various operations X509_STORE_CTX_verify_fn verify; // called to verify a certificate X509_STORE_CTX_verify_cb verify_cb; // error callback X509_STORE_CTX_get_issuer_fn get_issuer; // get issuers cert from ctx X509_STORE_CTX_check_issued_fn check_issued; // check issued X509_STORE_CTX_check_revocation_fn check_revocation; // Check revocation status of chain X509_STORE_CTX_get_crl_fn get_crl; // retrieve CRL X509_STORE_CTX_check_crl_fn check_crl; // Check CRL validity X509_STORE_CTX_cert_crl_fn cert_crl; // Check certificate against CRL X509_STORE_CTX_check_policy_fn check_policy; X509_STORE_CTX_lookup_certs_fn lookup_certs; X509_STORE_CTX_lookup_crls_fn lookup_crls; X509_STORE_CTX_cleanup_fn cleanup; // The following is built up int valid; // if 0, rebuild chain int last_untrusted; // index of last untrusted cert STACK_OF(X509) *chain; // chain of X509s - built up and trusted X509_POLICY_TREE *tree; // Valid policy tree int explicit_policy; // Require explicit policy value // When something goes wrong, this is why int error_depth; int error; X509 *current_cert; X509 *current_issuer; // cert currently being tested as valid issuer X509_CRL *current_crl; // current CRL int current_crl_score; // score of current CRL unsigned int current_reasons; // Reason mask X509_STORE_CTX *parent; // For CRL path validation: parent context CRYPTO_EX_DATA ex_data; } /* X509_STORE_CTX */; ASN1_TYPE *ASN1_generate_v3(const char *str, X509V3_CTX *cnf); /* RSA-PSS functions. */ /* x509_rsa_pss_to_ctx configures |ctx| for an RSA-PSS operation based on * signature algorithm parameters in |sigalg| (which must have type * |NID_rsassaPss|) and key |pkey|. It returns one on success and zero on * error. */ int x509_rsa_pss_to_ctx(EVP_MD_CTX *ctx, const X509_ALGOR *sigalg, EVP_PKEY *pkey); /* x509_rsa_pss_to_ctx sets |algor| to the signature algorithm parameters for * |ctx|, which must have been configured for an RSA-PSS signing operation. It * returns one on success and zero on error. */ int x509_rsa_ctx_to_pss(EVP_MD_CTX *ctx, X509_ALGOR *algor); /* x509_print_rsa_pss_params prints a human-readable representation of RSA-PSS * parameters in |sigalg| to |bp|. It returns one on success and zero on * error. */ int x509_print_rsa_pss_params(BIO *bp, const X509_ALGOR *sigalg, int indent, ASN1_PCTX *pctx); /* Signature algorithm functions. */ /* x509_digest_sign_algorithm encodes the signing parameters of |ctx| as an * AlgorithmIdentifer and saves the result in |algor|. It returns one on * success, or zero on error. */ int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor); /* x509_digest_verify_init sets up |ctx| for a signature verification operation * with public key |pkey| and parameters from |algor|. The |ctx| argument must * have been initialised with |EVP_MD_CTX_init|. It returns one on success, or * zero on error. */ int x509_digest_verify_init(EVP_MD_CTX *ctx, const X509_ALGOR *sigalg, EVP_PKEY *pkey); #if defined(__cplusplus) } /* extern C */ #endif #endif /* OPENSSL_HEADER_X509_INTERNAL_H */