include/openssl/ts.h - third_party/openssl - Git at Google

 /*
  * Copyright 2006-2021 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
  */

 #ifndef OPENSSL_TS_H
 # define OPENSSL_TS_H
 # pragma once

 # include <openssl/macros.h>
 # ifndef OPENSSL_NO_DEPRECATED_3_0
 #  define HEADER_TS_H
 # endif

 # include <openssl/opensslconf.h>

 # ifndef OPENSSL_NO_TS
 # include <openssl/symhacks.h>
 # include <openssl/buffer.h>
 # include <openssl/evp.h>
 # include <openssl/bio.h>
 # include <openssl/asn1.h>
 # include <openssl/safestack.h>
 # include <openssl/rsa.h>
 # include <openssl/dsa.h>
 # include <openssl/dh.h>
 # include <openssl/tserr.h>
 # include <openssl/ess.h>
 # include <openssl/x509.h>
 # include <openssl/x509v3.h>
 # ifndef OPENSSL_NO_STDIO
 #  include <stdio.h>
 # endif
 # ifdef  __cplusplus
 extern "C" {
 # endif

 typedef struct TS_msg_imprint_st TS_MSG_IMPRINT;
 typedef struct TS_req_st TS_REQ;
 typedef struct TS_accuracy_st TS_ACCURACY;
 typedef struct TS_tst_info_st TS_TST_INFO;

 /* Possible values for status. */
 # define TS_STATUS_GRANTED                       0
 # define TS_STATUS_GRANTED_WITH_MODS             1
 # define TS_STATUS_REJECTION                     2
 # define TS_STATUS_WAITING                       3
 # define TS_STATUS_REVOCATION_WARNING            4
 # define TS_STATUS_REVOCATION_NOTIFICATION       5

 /* Possible values for failure_info. */
 # define TS_INFO_BAD_ALG                 0
 # define TS_INFO_BAD_REQUEST             2
 # define TS_INFO_BAD_DATA_FORMAT         5
 # define TS_INFO_TIME_NOT_AVAILABLE      14
 # define TS_INFO_UNACCEPTED_POLICY       15
 # define TS_INFO_UNACCEPTED_EXTENSION    16
 # define TS_INFO_ADD_INFO_NOT_AVAILABLE  17
 # define TS_INFO_SYSTEM_FAILURE          25


 typedef struct TS_status_info_st TS_STATUS_INFO;

 typedef struct TS_resp_st TS_RESP;

 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_REQ)
 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_REQ, TS_REQ)
 DECLARE_ASN1_DUP_FUNCTION(TS_REQ)

 #ifndef OPENSSL_NO_STDIO
 TS_REQ *d2i_TS_REQ_fp(FILE *fp, TS_REQ **a);
 int i2d_TS_REQ_fp(FILE *fp, const TS_REQ *a);
 #endif
 TS_REQ *d2i_TS_REQ_bio(BIO *fp, TS_REQ **a);
 int i2d_TS_REQ_bio(BIO *fp, const TS_REQ *a);

 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_MSG_IMPRINT)
 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_MSG_IMPRINT, TS_MSG_IMPRINT)
 DECLARE_ASN1_DUP_FUNCTION(TS_MSG_IMPRINT)

 #ifndef OPENSSL_NO_STDIO
 TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT_fp(FILE *fp, TS_MSG_IMPRINT **a);
 int i2d_TS_MSG_IMPRINT_fp(FILE *fp, const TS_MSG_IMPRINT *a);
 #endif
 TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT_bio(BIO *bio, TS_MSG_IMPRINT **a);
 int i2d_TS_MSG_IMPRINT_bio(BIO *bio, const TS_MSG_IMPRINT *a);

 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_RESP)
 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_RESP, TS_RESP)
 DECLARE_ASN1_DUP_FUNCTION(TS_RESP)

 #ifndef OPENSSL_NO_STDIO
 TS_RESP *d2i_TS_RESP_fp(FILE *fp, TS_RESP **a);
 int i2d_TS_RESP_fp(FILE *fp, const TS_RESP *a);
 #endif
 TS_RESP *d2i_TS_RESP_bio(BIO *bio, TS_RESP **a);
 int i2d_TS_RESP_bio(BIO *bio, const TS_RESP *a);

 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_STATUS_INFO)
 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_STATUS_INFO, TS_STATUS_INFO)
 DECLARE_ASN1_DUP_FUNCTION(TS_STATUS_INFO)

 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_TST_INFO)
 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_TST_INFO, TS_TST_INFO)
 DECLARE_ASN1_DUP_FUNCTION(TS_TST_INFO)
 TS_TST_INFO *PKCS7_to_TS_TST_INFO(PKCS7 *token);

 #ifndef OPENSSL_NO_STDIO
 TS_TST_INFO *d2i_TS_TST_INFO_fp(FILE *fp, TS_TST_INFO **a);
 int i2d_TS_TST_INFO_fp(FILE *fp, const TS_TST_INFO *a);
 #endif
 TS_TST_INFO *d2i_TS_TST_INFO_bio(BIO *bio, TS_TST_INFO **a);
 int i2d_TS_TST_INFO_bio(BIO *bio, const TS_TST_INFO *a);

 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_ACCURACY)
 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_ACCURACY, TS_ACCURACY)
 DECLARE_ASN1_DUP_FUNCTION(TS_ACCURACY)

 int TS_REQ_set_version(TS_REQ *a, long version);
 long TS_REQ_get_version(const TS_REQ *a);

 int TS_STATUS_INFO_set_status(TS_STATUS_INFO *a, int i);
 const ASN1_INTEGER *TS_STATUS_INFO_get0_status(const TS_STATUS_INFO *a);

 const STACK_OF(ASN1_UTF8STRING) *
 TS_STATUS_INFO_get0_text(const TS_STATUS_INFO *a);

 const ASN1_BIT_STRING *
 TS_STATUS_INFO_get0_failure_info(const TS_STATUS_INFO *a);

 int TS_REQ_set_msg_imprint(TS_REQ *a, TS_MSG_IMPRINT *msg_imprint);
 TS_MSG_IMPRINT *TS_REQ_get_msg_imprint(TS_REQ *a);

 int TS_MSG_IMPRINT_set_algo(TS_MSG_IMPRINT *a, X509_ALGOR *alg);
 X509_ALGOR *TS_MSG_IMPRINT_get_algo(TS_MSG_IMPRINT *a);

 int TS_MSG_IMPRINT_set_msg(TS_MSG_IMPRINT *a, unsigned char *d, int len);
 ASN1_OCTET_STRING *TS_MSG_IMPRINT_get_msg(TS_MSG_IMPRINT *a);

 int TS_REQ_set_policy_id(TS_REQ *a, const ASN1_OBJECT *policy);
 ASN1_OBJECT *TS_REQ_get_policy_id(TS_REQ *a);

 int TS_REQ_set_nonce(TS_REQ *a, const ASN1_INTEGER *nonce);
 const ASN1_INTEGER *TS_REQ_get_nonce(const TS_REQ *a);

 int TS_REQ_set_cert_req(TS_REQ *a, int cert_req);
 int TS_REQ_get_cert_req(const TS_REQ *a);

 STACK_OF(X509_EXTENSION) *TS_REQ_get_exts(TS_REQ *a);
 void TS_REQ_ext_free(TS_REQ *a);
 int TS_REQ_get_ext_count(TS_REQ *a);
 int TS_REQ_get_ext_by_NID(TS_REQ *a, int nid, int lastpos);
 int TS_REQ_get_ext_by_OBJ(TS_REQ *a, const ASN1_OBJECT *obj, int lastpos);
 int TS_REQ_get_ext_by_critical(TS_REQ *a, int crit, int lastpos);
 X509_EXTENSION *TS_REQ_get_ext(TS_REQ *a, int loc);
 X509_EXTENSION *TS_REQ_delete_ext(TS_REQ *a, int loc);
 int TS_REQ_add_ext(TS_REQ *a, X509_EXTENSION *ex, int loc);
 void *TS_REQ_get_ext_d2i(TS_REQ *a, int nid, int *crit, int *idx);

 /* Function declarations for TS_REQ defined in ts/ts_req_print.c */

 int TS_REQ_print_bio(BIO *bio, TS_REQ *a);

 /* Function declarations for TS_RESP defined in ts/ts_resp_utils.c */

 int TS_RESP_set_status_info(TS_RESP *a, TS_STATUS_INFO *info);
 TS_STATUS_INFO *TS_RESP_get_status_info(TS_RESP *a);

 /* Caller loses ownership of PKCS7 and TS_TST_INFO objects. */
 void TS_RESP_set_tst_info(TS_RESP *a, PKCS7 *p7, TS_TST_INFO *tst_info);
 PKCS7 *TS_RESP_get_token(TS_RESP *a);
 TS_TST_INFO *TS_RESP_get_tst_info(TS_RESP *a);

 int TS_TST_INFO_set_version(TS_TST_INFO *a, long version);
 long TS_TST_INFO_get_version(const TS_TST_INFO *a);

 int TS_TST_INFO_set_policy_id(TS_TST_INFO *a, ASN1_OBJECT *policy_id);
 ASN1_OBJECT *TS_TST_INFO_get_policy_id(TS_TST_INFO *a);

 int TS_TST_INFO_set_msg_imprint(TS_TST_INFO *a, TS_MSG_IMPRINT *msg_imprint);
 TS_MSG_IMPRINT *TS_TST_INFO_get_msg_imprint(TS_TST_INFO *a);

 int TS_TST_INFO_set_serial(TS_TST_INFO *a, const ASN1_INTEGER *serial);
 const ASN1_INTEGER *TS_TST_INFO_get_serial(const TS_TST_INFO *a);

 int TS_TST_INFO_set_time(TS_TST_INFO *a, const ASN1_GENERALIZEDTIME *gtime);
 const ASN1_GENERALIZEDTIME *TS_TST_INFO_get_time(const TS_TST_INFO *a);

 int TS_TST_INFO_set_accuracy(TS_TST_INFO *a, TS_ACCURACY *accuracy);
 TS_ACCURACY *TS_TST_INFO_get_accuracy(TS_TST_INFO *a);

 int TS_ACCURACY_set_seconds(TS_ACCURACY *a, const ASN1_INTEGER *seconds);
 const ASN1_INTEGER *TS_ACCURACY_get_seconds(const TS_ACCURACY *a);

 int TS_ACCURACY_set_millis(TS_ACCURACY *a, const ASN1_INTEGER *millis);
 const ASN1_INTEGER *TS_ACCURACY_get_millis(const TS_ACCURACY *a);

 int TS_ACCURACY_set_micros(TS_ACCURACY *a, const ASN1_INTEGER *micros);
 const ASN1_INTEGER *TS_ACCURACY_get_micros(const TS_ACCURACY *a);

 int TS_TST_INFO_set_ordering(TS_TST_INFO *a, int ordering);
 int TS_TST_INFO_get_ordering(const TS_TST_INFO *a);

 int TS_TST_INFO_set_nonce(TS_TST_INFO *a, const ASN1_INTEGER *nonce);
 const ASN1_INTEGER *TS_TST_INFO_get_nonce(const TS_TST_INFO *a);

 int TS_TST_INFO_set_tsa(TS_TST_INFO *a, GENERAL_NAME *tsa);
 GENERAL_NAME *TS_TST_INFO_get_tsa(TS_TST_INFO *a);

 STACK_OF(X509_EXTENSION) *TS_TST_INFO_get_exts(TS_TST_INFO *a);
 void TS_TST_INFO_ext_free(TS_TST_INFO *a);
 int TS_TST_INFO_get_ext_count(TS_TST_INFO *a);
 int TS_TST_INFO_get_ext_by_NID(TS_TST_INFO *a, int nid, int lastpos);
 int TS_TST_INFO_get_ext_by_OBJ(TS_TST_INFO *a, const ASN1_OBJECT *obj,
                                int lastpos);
 int TS_TST_INFO_get_ext_by_critical(TS_TST_INFO *a, int crit, int lastpos);
 X509_EXTENSION *TS_TST_INFO_get_ext(TS_TST_INFO *a, int loc);
 X509_EXTENSION *TS_TST_INFO_delete_ext(TS_TST_INFO *a, int loc);
 int TS_TST_INFO_add_ext(TS_TST_INFO *a, X509_EXTENSION *ex, int loc);
 void *TS_TST_INFO_get_ext_d2i(TS_TST_INFO *a, int nid, int *crit, int *idx);

 /*
  * Declarations related to response generation, defined in ts/ts_resp_sign.c.
  */

 /* Optional flags for response generation. */

 /* Don't include the TSA name in response. */
 # define TS_TSA_NAME             0x01

 /* Set ordering to true in response. */
 # define TS_ORDERING             0x02

 /*
  * Include the signer certificate and the other specified certificates in
  * the ESS signing certificate attribute beside the PKCS7 signed data.
  * Only the signer certificates is included by default.
  */
 # define TS_ESS_CERT_ID_CHAIN    0x04

 /* Forward declaration. */
 struct TS_resp_ctx;

 /* This must return a unique number less than 160 bits long. */
 typedef ASN1_INTEGER *(*TS_serial_cb) (struct TS_resp_ctx *, void *);

 /*
  * This must return the seconds and microseconds since Jan 1, 1970 in the sec
  * and usec variables allocated by the caller. Return non-zero for success
  * and zero for failure.
  */
 typedef int (*TS_time_cb) (struct TS_resp_ctx *, void *, long *sec,
                            long *usec);

 /*
  * This must process the given extension. It can modify the TS_TST_INFO
  * object of the context. Return values: !0 (processed), 0 (error, it must
  * set the status info/failure info of the response).
  */
 typedef int (*TS_extension_cb) (struct TS_resp_ctx *, X509_EXTENSION *,
                                 void *);

 typedef struct TS_resp_ctx TS_RESP_CTX;

 /* Creates a response context that can be used for generating responses. */
 TS_RESP_CTX *TS_RESP_CTX_new(void);
 TS_RESP_CTX *TS_RESP_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq);
 void TS_RESP_CTX_free(TS_RESP_CTX *ctx);

 /* This parameter must be set. */
 int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer);

 /* This parameter must be set. */
 int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key);

 int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx,
                                   const EVP_MD *signer_digest);
 int TS_RESP_CTX_set_ess_cert_id_digest(TS_RESP_CTX *ctx, const EVP_MD *md);

 /* This parameter must be set. */
 int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy);

 /* No additional certs are included in the response by default. */
 int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs);

 /*
  * Adds a new acceptable policy, only the default policy is accepted by
  * default.
  */
 int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy);

 /*
  * Adds a new acceptable message digest. Note that no message digests are
  * accepted by default. The md argument is shared with the caller.
  */
 int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md);

 /* Accuracy is not included by default. */
 int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx,
                              int secs, int millis, int micros);

 /*
  * Clock precision digits, i.e. the number of decimal digits: '0' means sec,
  * '3' msec, '6' usec, and so on. Default is 0.
  */
 int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx,
                                            unsigned clock_precision_digits);
 /* At most we accept usec precision. */
 # define TS_MAX_CLOCK_PRECISION_DIGITS   6

 /* Maximum status message length */
 # define TS_MAX_STATUS_LENGTH   (1024 * 1024)

 /* No flags are set by default. */
 void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags);

 /* Default callback always returns a constant. */
 void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data);

 /* Default callback uses the gettimeofday() and gmtime() system calls. */
 void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data);

 /*
  * Default callback rejects all extensions. The extension callback is called
  * when the TS_TST_INFO object is already set up and not signed yet.
  */
 /* FIXME: extension handling is not tested yet. */
 void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx,
                                   TS_extension_cb cb, void *data);

 /* The following methods can be used in the callbacks. */
 int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx,
                                 int status, const char *text);

 /* Sets the status info only if it is still TS_STATUS_GRANTED. */
 int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx,
                                      int status, const char *text);

 int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure);

 /* The get methods below can be used in the extension callback. */
 TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx);

 TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx);

 /*
  * Creates the signed TS_TST_INFO and puts it in TS_RESP.
  * In case of errors it sets the status info properly.
  * Returns NULL only in case of memory allocation/fatal error.
  */
 TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio);

 /*
  * Declarations related to response verification,
  * they are defined in ts/ts_resp_verify.c.
  */

 int TS_RESP_verify_signature(PKCS7 *token, STACK_OF(X509) *certs,
                              X509_STORE *store, X509 **signer_out);

 /* Context structure for the generic verify method. */

 /* Verify the signer's certificate and the signature of the response. */
 # define TS_VFY_SIGNATURE        (1u << 0)
 /* Verify the version number of the response. */
 # define TS_VFY_VERSION          (1u << 1)
 /* Verify if the policy supplied by the user matches the policy of the TSA. */
 # define TS_VFY_POLICY           (1u << 2)
 /*
  * Verify the message imprint provided by the user. This flag should not be
  * specified with TS_VFY_DATA.
  */
 # define TS_VFY_IMPRINT          (1u << 3)
 /*
  * Verify the message imprint computed by the verify method from the user
  * provided data and the MD algorithm of the response. This flag should not
  * be specified with TS_VFY_IMPRINT.
  */
 # define TS_VFY_DATA             (1u << 4)
 /* Verify the nonce value. */
 # define TS_VFY_NONCE            (1u << 5)
 /* Verify if the TSA name field matches the signer certificate. */
 # define TS_VFY_SIGNER           (1u << 6)
 /* Verify if the TSA name field equals to the user provided name. */
 # define TS_VFY_TSA_NAME         (1u << 7)

 /* You can use the following convenience constants. */
 # define TS_VFY_ALL_IMPRINT      (TS_VFY_SIGNATURE       \
                                  | TS_VFY_VERSION       \
                                  | TS_VFY_POLICY        \
                                  | TS_VFY_IMPRINT       \
                                  | TS_VFY_NONCE         \
                                  | TS_VFY_SIGNER        \
                                  | TS_VFY_TSA_NAME)
 # define TS_VFY_ALL_DATA         (TS_VFY_SIGNATURE       \
                                  | TS_VFY_VERSION       \
                                  | TS_VFY_POLICY        \
                                  | TS_VFY_DATA          \
                                  | TS_VFY_NONCE         \
                                  | TS_VFY_SIGNER        \
                                  | TS_VFY_TSA_NAME)

 typedef struct TS_verify_ctx TS_VERIFY_CTX;

 int TS_RESP_verify_response(TS_VERIFY_CTX *ctx, TS_RESP *response);
 int TS_RESP_verify_token(TS_VERIFY_CTX *ctx, PKCS7 *token);

 /*
  * Declarations related to response verification context,
  */
 TS_VERIFY_CTX *TS_VERIFY_CTX_new(void);
 void TS_VERIFY_CTX_init(TS_VERIFY_CTX *ctx);
 void TS_VERIFY_CTX_free(TS_VERIFY_CTX *ctx);
 void TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX *ctx);
 int TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX *ctx, int f);
 int TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX *ctx, int f);
 BIO *TS_VERIFY_CTX_set_data(TS_VERIFY_CTX *ctx, BIO *b);
 unsigned char *TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX *ctx,
                                          unsigned char *hexstr, long len);
 X509_STORE *TS_VERIFY_CTX_set_store(TS_VERIFY_CTX *ctx, X509_STORE *s);
 # ifndef OPENSSL_NO_DEPRECATED_3_0
 #  define TS_VERIFY_CTS_set_certs(ctx, cert) TS_VERIFY_CTX_set_certs(ctx,cert)
 # endif
 STACK_OF(X509) *TS_VERIFY_CTX_set_certs(TS_VERIFY_CTX *ctx, STACK_OF(X509) *certs);

 /*-
  * If ctx is NULL, it allocates and returns a new object, otherwise
  * it returns ctx. It initialises all the members as follows:
  * flags = TS_VFY_ALL_IMPRINT & ~(TS_VFY_TSA_NAME | TS_VFY_SIGNATURE)
  * certs = NULL
  * store = NULL
  * policy = policy from the request or NULL if absent (in this case
  *      TS_VFY_POLICY is cleared from flags as well)
  * md_alg = MD algorithm from request
  * imprint, imprint_len = imprint from request
  * data = NULL
  * nonce, nonce_len = nonce from the request or NULL if absent (in this case
  *      TS_VFY_NONCE is cleared from flags as well)
  * tsa_name = NULL
  * Important: after calling this method TS_VFY_SIGNATURE should be added!
  */
 TS_VERIFY_CTX *TS_REQ_to_TS_VERIFY_CTX(TS_REQ *req, TS_VERIFY_CTX *ctx);

 /* Function declarations for TS_RESP defined in ts/ts_resp_print.c */

 int TS_RESP_print_bio(BIO *bio, TS_RESP *a);
 int TS_STATUS_INFO_print_bio(BIO *bio, TS_STATUS_INFO *a);
 int TS_TST_INFO_print_bio(BIO *bio, TS_TST_INFO *a);

 /* Common utility functions defined in ts/ts_lib.c */

 int TS_ASN1_INTEGER_print_bio(BIO *bio, const ASN1_INTEGER *num);
 int TS_OBJ_print_bio(BIO *bio, const ASN1_OBJECT *obj);
 int TS_ext_print_bio(BIO *bio, const STACK_OF(X509_EXTENSION) *extensions);
 int TS_X509_ALGOR_print_bio(BIO *bio, const X509_ALGOR *alg);
 int TS_MSG_IMPRINT_print_bio(BIO *bio, TS_MSG_IMPRINT *msg);

 /*
  * Function declarations for handling configuration options, defined in
  * ts/ts_conf.c
  */

 X509 *TS_CONF_load_cert(const char *file);
 STACK_OF(X509) *TS_CONF_load_certs(const char *file);
 EVP_PKEY *TS_CONF_load_key(const char *file, const char *pass);
 const char *TS_CONF_get_tsa_section(CONF *conf, const char *section);
 int TS_CONF_set_serial(CONF *conf, const char *section, TS_serial_cb cb,
                        TS_RESP_CTX *ctx);
 #ifndef OPENSSL_NO_ENGINE
 int TS_CONF_set_crypto_device(CONF *conf, const char *section,
                               const char *device);
 int TS_CONF_set_default_engine(const char *name);
 #endif
 int TS_CONF_set_signer_cert(CONF *conf, const char *section,
                             const char *cert, TS_RESP_CTX *ctx);
 int TS_CONF_set_certs(CONF *conf, const char *section, const char *certs,
                       TS_RESP_CTX *ctx);
 int TS_CONF_set_signer_key(CONF *conf, const char *section,
                            const char *key, const char *pass,
                            TS_RESP_CTX *ctx);
 int TS_CONF_set_signer_digest(CONF *conf, const char *section,
                                const char *md, TS_RESP_CTX *ctx);
 int TS_CONF_set_def_policy(CONF *conf, const char *section,
                            const char *policy, TS_RESP_CTX *ctx);
 int TS_CONF_set_policies(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 int TS_CONF_set_digests(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 int TS_CONF_set_accuracy(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 int TS_CONF_set_clock_precision_digits(const CONF *conf, const char *section,
                                        TS_RESP_CTX *ctx);
 int TS_CONF_set_ordering(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 int TS_CONF_set_tsa_name(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 int TS_CONF_set_ess_cert_id_chain(CONF *conf, const char *section,
                                   TS_RESP_CTX *ctx);
 int TS_CONF_set_ess_cert_id_digest(CONF *conf, const char *section,
                                       TS_RESP_CTX *ctx);

 #  ifdef  __cplusplus
 }
 #  endif
 # endif
 #endif
	/*
	* Copyright 2006-2021 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
	*/

	#ifndef OPENSSL_TS_H
	# define OPENSSL_TS_H
	# pragma once

	# include <openssl/macros.h>
	# ifndef OPENSSL_NO_DEPRECATED_3_0
	# define HEADER_TS_H
	# endif

	# include <openssl/opensslconf.h>

	# ifndef OPENSSL_NO_TS
	# include <openssl/symhacks.h>
	# include <openssl/buffer.h>
	# include <openssl/evp.h>
	# include <openssl/bio.h>
	# include <openssl/asn1.h>
	# include <openssl/safestack.h>
	# include <openssl/rsa.h>
	# include <openssl/dsa.h>
	# include <openssl/dh.h>
	# include <openssl/tserr.h>
	# include <openssl/ess.h>
	# include <openssl/x509.h>
	# include <openssl/x509v3.h>
	# ifndef OPENSSL_NO_STDIO
	# include <stdio.h>
	# endif
	# ifdef __cplusplus
	extern "C" {
	# endif

	typedef struct TS_msg_imprint_st TS_MSG_IMPRINT;
	typedef struct TS_req_st TS_REQ;
	typedef struct TS_accuracy_st TS_ACCURACY;
	typedef struct TS_tst_info_st TS_TST_INFO;

	/* Possible values for status. */
	# define TS_STATUS_GRANTED 0
	# define TS_STATUS_GRANTED_WITH_MODS 1
	# define TS_STATUS_REJECTION 2
	# define TS_STATUS_WAITING 3
	# define TS_STATUS_REVOCATION_WARNING 4
	# define TS_STATUS_REVOCATION_NOTIFICATION 5

	/* Possible values for failure_info. */
	# define TS_INFO_BAD_ALG 0
	# define TS_INFO_BAD_REQUEST 2
	# define TS_INFO_BAD_DATA_FORMAT 5
	# define TS_INFO_TIME_NOT_AVAILABLE 14
	# define TS_INFO_UNACCEPTED_POLICY 15
	# define TS_INFO_UNACCEPTED_EXTENSION 16
	# define TS_INFO_ADD_INFO_NOT_AVAILABLE 17
	# define TS_INFO_SYSTEM_FAILURE 25


	typedef struct TS_status_info_st TS_STATUS_INFO;

	typedef struct TS_resp_st TS_RESP;

	DECLARE_ASN1_ALLOC_FUNCTIONS(TS_REQ)
	DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_REQ, TS_REQ)
	DECLARE_ASN1_DUP_FUNCTION(TS_REQ)

	#ifndef OPENSSL_NO_STDIO
	TS_REQ d2i_TS_REQ_fp(FILE fp, TS_REQ **a);
	int i2d_TS_REQ_fp(FILE fp, const TS_REQ a);
	#endif
	TS_REQ d2i_TS_REQ_bio(BIO fp, TS_REQ **a);
	int i2d_TS_REQ_bio(BIO fp, const TS_REQ a);

	DECLARE_ASN1_ALLOC_FUNCTIONS(TS_MSG_IMPRINT)
	DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_MSG_IMPRINT, TS_MSG_IMPRINT)
	DECLARE_ASN1_DUP_FUNCTION(TS_MSG_IMPRINT)

	#ifndef OPENSSL_NO_STDIO
	TS_MSG_IMPRINT d2i_TS_MSG_IMPRINT_fp(FILE fp, TS_MSG_IMPRINT **a);
	int i2d_TS_MSG_IMPRINT_fp(FILE fp, const TS_MSG_IMPRINT a);
	#endif
	TS_MSG_IMPRINT d2i_TS_MSG_IMPRINT_bio(BIO bio, TS_MSG_IMPRINT **a);
	int i2d_TS_MSG_IMPRINT_bio(BIO bio, const TS_MSG_IMPRINT a);

	DECLARE_ASN1_ALLOC_FUNCTIONS(TS_RESP)
	DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_RESP, TS_RESP)
	DECLARE_ASN1_DUP_FUNCTION(TS_RESP)

	#ifndef OPENSSL_NO_STDIO
	TS_RESP d2i_TS_RESP_fp(FILE fp, TS_RESP **a);
	int i2d_TS_RESP_fp(FILE fp, const TS_RESP a);
	#endif
	TS_RESP d2i_TS_RESP_bio(BIO bio, TS_RESP **a);
	int i2d_TS_RESP_bio(BIO bio, const TS_RESP a);

	DECLARE_ASN1_ALLOC_FUNCTIONS(TS_STATUS_INFO)
	DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_STATUS_INFO, TS_STATUS_INFO)
	DECLARE_ASN1_DUP_FUNCTION(TS_STATUS_INFO)

	DECLARE_ASN1_ALLOC_FUNCTIONS(TS_TST_INFO)
	DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_TST_INFO, TS_TST_INFO)
	DECLARE_ASN1_DUP_FUNCTION(TS_TST_INFO)
	TS_TST_INFO PKCS7_to_TS_TST_INFO(PKCS7 token);

	#ifndef OPENSSL_NO_STDIO
	TS_TST_INFO d2i_TS_TST_INFO_fp(FILE fp, TS_TST_INFO **a);
	int i2d_TS_TST_INFO_fp(FILE fp, const TS_TST_INFO a);
	#endif
	TS_TST_INFO d2i_TS_TST_INFO_bio(BIO bio, TS_TST_INFO **a);
	int i2d_TS_TST_INFO_bio(BIO bio, const TS_TST_INFO a);

	DECLARE_ASN1_ALLOC_FUNCTIONS(TS_ACCURACY)
	DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_ACCURACY, TS_ACCURACY)
	DECLARE_ASN1_DUP_FUNCTION(TS_ACCURACY)

	int TS_REQ_set_version(TS_REQ *a, long version);
	long TS_REQ_get_version(const TS_REQ *a);

	int TS_STATUS_INFO_set_status(TS_STATUS_INFO *a, int i);
	const ASN1_INTEGER TS_STATUS_INFO_get0_status(const TS_STATUS_INFO a);

	const STACK_OF(ASN1_UTF8STRING) *
	TS_STATUS_INFO_get0_text(const TS_STATUS_INFO *a);

	const ASN1_BIT_STRING *
	TS_STATUS_INFO_get0_failure_info(const TS_STATUS_INFO *a);

	int TS_REQ_set_msg_imprint(TS_REQ a, TS_MSG_IMPRINT msg_imprint);
	TS_MSG_IMPRINT TS_REQ_get_msg_imprint(TS_REQ a);

	int TS_MSG_IMPRINT_set_algo(TS_MSG_IMPRINT a, X509_ALGOR alg);
	X509_ALGOR TS_MSG_IMPRINT_get_algo(TS_MSG_IMPRINT a);

	int TS_MSG_IMPRINT_set_msg(TS_MSG_IMPRINT a, unsigned char d, int len);
	ASN1_OCTET_STRING TS_MSG_IMPRINT_get_msg(TS_MSG_IMPRINT a);

	int TS_REQ_set_policy_id(TS_REQ a, const ASN1_OBJECT policy);
	ASN1_OBJECT TS_REQ_get_policy_id(TS_REQ a);

	int TS_REQ_set_nonce(TS_REQ a, const ASN1_INTEGER nonce);
	const ASN1_INTEGER TS_REQ_get_nonce(const TS_REQ a);

	int TS_REQ_set_cert_req(TS_REQ *a, int cert_req);
	int TS_REQ_get_cert_req(const TS_REQ *a);

	STACK_OF(X509_EXTENSION) TS_REQ_get_exts(TS_REQ a);
	void TS_REQ_ext_free(TS_REQ *a);
	int TS_REQ_get_ext_count(TS_REQ *a);
	int TS_REQ_get_ext_by_NID(TS_REQ *a, int nid, int lastpos);
	int TS_REQ_get_ext_by_OBJ(TS_REQ a, const ASN1_OBJECT obj, int lastpos);
	int TS_REQ_get_ext_by_critical(TS_REQ *a, int crit, int lastpos);
	X509_EXTENSION TS_REQ_get_ext(TS_REQ a, int loc);
	X509_EXTENSION TS_REQ_delete_ext(TS_REQ a, int loc);
	int TS_REQ_add_ext(TS_REQ a, X509_EXTENSION ex, int loc);
	void TS_REQ_get_ext_d2i(TS_REQ a, int nid, int crit, int idx);

	/* Function declarations for TS_REQ defined in ts/ts_req_print.c */

	int TS_REQ_print_bio(BIO bio, TS_REQ a);

	/* Function declarations for TS_RESP defined in ts/ts_resp_utils.c */

	int TS_RESP_set_status_info(TS_RESP a, TS_STATUS_INFO info);
	TS_STATUS_INFO TS_RESP_get_status_info(TS_RESP a);

	/* Caller loses ownership of PKCS7 and TS_TST_INFO objects. */
	void TS_RESP_set_tst_info(TS_RESP a, PKCS7 p7, TS_TST_INFO *tst_info);
	PKCS7 TS_RESP_get_token(TS_RESP a);
	TS_TST_INFO TS_RESP_get_tst_info(TS_RESP a);

	int TS_TST_INFO_set_version(TS_TST_INFO *a, long version);
	long TS_TST_INFO_get_version(const TS_TST_INFO *a);

	int TS_TST_INFO_set_policy_id(TS_TST_INFO a, ASN1_OBJECT policy_id);
	ASN1_OBJECT TS_TST_INFO_get_policy_id(TS_TST_INFO a);

	int TS_TST_INFO_set_msg_imprint(TS_TST_INFO a, TS_MSG_IMPRINT msg_imprint);
	TS_MSG_IMPRINT TS_TST_INFO_get_msg_imprint(TS_TST_INFO a);

	int TS_TST_INFO_set_serial(TS_TST_INFO a, const ASN1_INTEGER serial);
	const ASN1_INTEGER TS_TST_INFO_get_serial(const TS_TST_INFO a);

	int TS_TST_INFO_set_time(TS_TST_INFO a, const ASN1_GENERALIZEDTIME gtime);
	const ASN1_GENERALIZEDTIME TS_TST_INFO_get_time(const TS_TST_INFO a);

	int TS_TST_INFO_set_accuracy(TS_TST_INFO a, TS_ACCURACY accuracy);
	TS_ACCURACY TS_TST_INFO_get_accuracy(TS_TST_INFO a);

	int TS_ACCURACY_set_seconds(TS_ACCURACY a, const ASN1_INTEGER seconds);
	const ASN1_INTEGER TS_ACCURACY_get_seconds(const TS_ACCURACY a);

	int TS_ACCURACY_set_millis(TS_ACCURACY a, const ASN1_INTEGER millis);
	const ASN1_INTEGER TS_ACCURACY_get_millis(const TS_ACCURACY a);

	int TS_ACCURACY_set_micros(TS_ACCURACY a, const ASN1_INTEGER micros);
	const ASN1_INTEGER TS_ACCURACY_get_micros(const TS_ACCURACY a);

	int TS_TST_INFO_set_ordering(TS_TST_INFO *a, int ordering);
	int TS_TST_INFO_get_ordering(const TS_TST_INFO *a);

	int TS_TST_INFO_set_nonce(TS_TST_INFO a, const ASN1_INTEGER nonce);
	const ASN1_INTEGER TS_TST_INFO_get_nonce(const TS_TST_INFO a);

	int TS_TST_INFO_set_tsa(TS_TST_INFO a, GENERAL_NAME tsa);
	GENERAL_NAME TS_TST_INFO_get_tsa(TS_TST_INFO a);

	STACK_OF(X509_EXTENSION) TS_TST_INFO_get_exts(TS_TST_INFO a);
	void TS_TST_INFO_ext_free(TS_TST_INFO *a);
	int TS_TST_INFO_get_ext_count(TS_TST_INFO *a);
	int TS_TST_INFO_get_ext_by_NID(TS_TST_INFO *a, int nid, int lastpos);
	int TS_TST_INFO_get_ext_by_OBJ(TS_TST_INFO a, const ASN1_OBJECT obj,
	int lastpos);
	int TS_TST_INFO_get_ext_by_critical(TS_TST_INFO *a, int crit, int lastpos);
	X509_EXTENSION TS_TST_INFO_get_ext(TS_TST_INFO a, int loc);
	X509_EXTENSION TS_TST_INFO_delete_ext(TS_TST_INFO a, int loc);
	int TS_TST_INFO_add_ext(TS_TST_INFO a, X509_EXTENSION ex, int loc);
	void TS_TST_INFO_get_ext_d2i(TS_TST_INFO a, int nid, int crit, int idx);

	/*
	* Declarations related to response generation, defined in ts/ts_resp_sign.c.
	*/

	/* Optional flags for response generation. */

	/* Don't include the TSA name in response. */
	# define TS_TSA_NAME 0x01

	/* Set ordering to true in response. */
	# define TS_ORDERING 0x02

	/*
	* Include the signer certificate and the other specified certificates in
	* the ESS signing certificate attribute beside the PKCS7 signed data.
	* Only the signer certificates is included by default.
	*/
	# define TS_ESS_CERT_ID_CHAIN 0x04

	/* Forward declaration. */
	struct TS_resp_ctx;

	/* This must return a unique number less than 160 bits long. */
	typedef ASN1_INTEGER (TS_serial_cb) (struct TS_resp_ctx , void );

	/*
	* This must return the seconds and microseconds since Jan 1, 1970 in the sec
	* and usec variables allocated by the caller. Return non-zero for success
	* and zero for failure.
	*/
	typedef int (TS_time_cb) (struct TS_resp_ctx , void , long sec,
	long *usec);

	/*
	* This must process the given extension. It can modify the TS_TST_INFO
	* object of the context. Return values: !0 (processed), 0 (error, it must
	* set the status info/failure info of the response).
	*/
	typedef int (TS_extension_cb) (struct TS_resp_ctx , X509_EXTENSION *,
	void *);

	typedef struct TS_resp_ctx TS_RESP_CTX;

	/* Creates a response context that can be used for generating responses. */
	TS_RESP_CTX *TS_RESP_CTX_new(void);
	TS_RESP_CTX TS_RESP_CTX_new_ex(OSSL_LIB_CTX libctx, const char *propq);
	void TS_RESP_CTX_free(TS_RESP_CTX *ctx);

	/* This parameter must be set. */
	int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX ctx, X509 signer);

	/* This parameter must be set. */
	int TS_RESP_CTX_set_signer_key(TS_RESP_CTX ctx, EVP_PKEY key);

	int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx,
	const EVP_MD *signer_digest);
	int TS_RESP_CTX_set_ess_cert_id_digest(TS_RESP_CTX ctx, const EVP_MD md);

	/* This parameter must be set. */
	int TS_RESP_CTX_set_def_policy(TS_RESP_CTX ctx, const ASN1_OBJECT def_policy);

	/* No additional certs are included in the response by default. */
	int TS_RESP_CTX_set_certs(TS_RESP_CTX ctx, STACK_OF(X509) certs);

	/*
	* Adds a new acceptable policy, only the default policy is accepted by
	* default.
	*/
	int TS_RESP_CTX_add_policy(TS_RESP_CTX ctx, const ASN1_OBJECT policy);

	/*
	* Adds a new acceptable message digest. Note that no message digests are
	* accepted by default. The md argument is shared with the caller.
	*/
	int TS_RESP_CTX_add_md(TS_RESP_CTX ctx, const EVP_MD md);

	/* Accuracy is not included by default. */
	int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx,
	int secs, int millis, int micros);

	/*
	* Clock precision digits, i.e. the number of decimal digits: '0' means sec,
	* '3' msec, '6' usec, and so on. Default is 0.
	*/
	int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx,
	unsigned clock_precision_digits);
	/* At most we accept usec precision. */
	# define TS_MAX_CLOCK_PRECISION_DIGITS 6

	/* Maximum status message length */
	# define TS_MAX_STATUS_LENGTH (1024 * 1024)

	/* No flags are set by default. */
	void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags);

	/* Default callback always returns a constant. */
	void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX ctx, TS_serial_cb cb, void data);

	/* Default callback uses the gettimeofday() and gmtime() system calls. */
	void TS_RESP_CTX_set_time_cb(TS_RESP_CTX ctx, TS_time_cb cb, void data);

	/*
	* Default callback rejects all extensions. The extension callback is called
	* when the TS_TST_INFO object is already set up and not signed yet.
	*/
	/* FIXME: extension handling is not tested yet. */
	void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx,
	TS_extension_cb cb, void *data);

	/* The following methods can be used in the callbacks. */
	int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx,
	int status, const char *text);

	/* Sets the status info only if it is still TS_STATUS_GRANTED. */
	int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx,
	int status, const char *text);

	int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure);

	/* The get methods below can be used in the extension callback. */
	TS_REQ TS_RESP_CTX_get_request(TS_RESP_CTX ctx);

	TS_TST_INFO TS_RESP_CTX_get_tst_info(TS_RESP_CTX ctx);

	/*
	* Creates the signed TS_TST_INFO and puts it in TS_RESP.
	* In case of errors it sets the status info properly.
	* Returns NULL only in case of memory allocation/fatal error.
	*/
	TS_RESP TS_RESP_create_response(TS_RESP_CTX ctx, BIO *req_bio);

	/*
	* Declarations related to response verification,
	* they are defined in ts/ts_resp_verify.c.
	*/

	int TS_RESP_verify_signature(PKCS7 token, STACK_OF(X509) certs,
	X509_STORE store, X509 *signer_out);

	/* Context structure for the generic verify method. */

	/* Verify the signer's certificate and the signature of the response. */
	# define TS_VFY_SIGNATURE (1u << 0)
	/* Verify the version number of the response. */
	# define TS_VFY_VERSION (1u << 1)
	/* Verify if the policy supplied by the user matches the policy of the TSA. */
	# define TS_VFY_POLICY (1u << 2)
	/*
	* Verify the message imprint provided by the user. This flag should not be
	* specified with TS_VFY_DATA.
	*/
	# define TS_VFY_IMPRINT (1u << 3)
	/*
	* Verify the message imprint computed by the verify method from the user
	* provided data and the MD algorithm of the response. This flag should not
	* be specified with TS_VFY_IMPRINT.
	*/
	# define TS_VFY_DATA (1u << 4)
	/* Verify the nonce value. */
	# define TS_VFY_NONCE (1u << 5)
	/* Verify if the TSA name field matches the signer certificate. */
	# define TS_VFY_SIGNER (1u << 6)
	/* Verify if the TSA name field equals to the user provided name. */
	# define TS_VFY_TSA_NAME (1u << 7)

	/* You can use the following convenience constants. */
	# define TS_VFY_ALL_IMPRINT (TS_VFY_SIGNATURE \
	\| TS_VFY_VERSION \
	\| TS_VFY_POLICY \
	\| TS_VFY_IMPRINT \
	\| TS_VFY_NONCE \
	\| TS_VFY_SIGNER \
	\| TS_VFY_TSA_NAME)
	# define TS_VFY_ALL_DATA (TS_VFY_SIGNATURE \
	\| TS_VFY_VERSION \
	\| TS_VFY_POLICY \
	\| TS_VFY_DATA \
	\| TS_VFY_NONCE \
	\| TS_VFY_SIGNER \
	\| TS_VFY_TSA_NAME)

	typedef struct TS_verify_ctx TS_VERIFY_CTX;

	int TS_RESP_verify_response(TS_VERIFY_CTX ctx, TS_RESP response);
	int TS_RESP_verify_token(TS_VERIFY_CTX ctx, PKCS7 token);

	/*
	* Declarations related to response verification context,
	*/
	TS_VERIFY_CTX *TS_VERIFY_CTX_new(void);
	void TS_VERIFY_CTX_init(TS_VERIFY_CTX *ctx);
	void TS_VERIFY_CTX_free(TS_VERIFY_CTX *ctx);
	void TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX *ctx);
	int TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX *ctx, int f);
	int TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX *ctx, int f);
	BIO TS_VERIFY_CTX_set_data(TS_VERIFY_CTX ctx, BIO *b);
	unsigned char TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX ctx,
	unsigned char *hexstr, long len);
	X509_STORE TS_VERIFY_CTX_set_store(TS_VERIFY_CTX ctx, X509_STORE *s);
	# ifndef OPENSSL_NO_DEPRECATED_3_0
	# define TS_VERIFY_CTS_set_certs(ctx, cert) TS_VERIFY_CTX_set_certs(ctx,cert)
	# endif
	STACK_OF(X509) TS_VERIFY_CTX_set_certs(TS_VERIFY_CTX ctx, STACK_OF(X509) *certs);

	/*-
	* If ctx is NULL, it allocates and returns a new object, otherwise
	* it returns ctx. It initialises all the members as follows:
	* flags = TS_VFY_ALL_IMPRINT & ~(TS_VFY_TSA_NAME \| TS_VFY_SIGNATURE)
	* certs = NULL
	* store = NULL
	* policy = policy from the request or NULL if absent (in this case
	* TS_VFY_POLICY is cleared from flags as well)
	* md_alg = MD algorithm from request
	* imprint, imprint_len = imprint from request
	* data = NULL
	* nonce, nonce_len = nonce from the request or NULL if absent (in this case
	* TS_VFY_NONCE is cleared from flags as well)
	* tsa_name = NULL
	* Important: after calling this method TS_VFY_SIGNATURE should be added!
	*/
	TS_VERIFY_CTX TS_REQ_to_TS_VERIFY_CTX(TS_REQ req, TS_VERIFY_CTX *ctx);

	/* Function declarations for TS_RESP defined in ts/ts_resp_print.c */

	int TS_RESP_print_bio(BIO bio, TS_RESP a);
	int TS_STATUS_INFO_print_bio(BIO bio, TS_STATUS_INFO a);
	int TS_TST_INFO_print_bio(BIO bio, TS_TST_INFO a);

	/* Common utility functions defined in ts/ts_lib.c */

	int TS_ASN1_INTEGER_print_bio(BIO bio, const ASN1_INTEGER num);
	int TS_OBJ_print_bio(BIO bio, const ASN1_OBJECT obj);
	int TS_ext_print_bio(BIO bio, const STACK_OF(X509_EXTENSION) extensions);
	int TS_X509_ALGOR_print_bio(BIO bio, const X509_ALGOR alg);
	int TS_MSG_IMPRINT_print_bio(BIO bio, TS_MSG_IMPRINT msg);

	/*
	* Function declarations for handling configuration options, defined in
	* ts/ts_conf.c
	*/

	X509 TS_CONF_load_cert(const char file);
	STACK_OF(X509) TS_CONF_load_certs(const char file);
	EVP_PKEY TS_CONF_load_key(const char file, const char *pass);
	const char TS_CONF_get_tsa_section(CONF conf, const char *section);
	int TS_CONF_set_serial(CONF conf, const char section, TS_serial_cb cb,
	TS_RESP_CTX *ctx);
	#ifndef OPENSSL_NO_ENGINE
	int TS_CONF_set_crypto_device(CONF conf, const char section,
	const char *device);
	int TS_CONF_set_default_engine(const char *name);
	#endif
	int TS_CONF_set_signer_cert(CONF conf, const char section,
	const char cert, TS_RESP_CTX ctx);
	int TS_CONF_set_certs(CONF conf, const char section, const char *certs,
	TS_RESP_CTX *ctx);
	int TS_CONF_set_signer_key(CONF conf, const char section,
	const char key, const char pass,
	TS_RESP_CTX *ctx);
	int TS_CONF_set_signer_digest(CONF conf, const char section,
	const char md, TS_RESP_CTX ctx);
	int TS_CONF_set_def_policy(CONF conf, const char section,
	const char policy, TS_RESP_CTX ctx);
	int TS_CONF_set_policies(CONF conf, const char section, TS_RESP_CTX *ctx);
	int TS_CONF_set_digests(CONF conf, const char section, TS_RESP_CTX *ctx);
	int TS_CONF_set_accuracy(CONF conf, const char section, TS_RESP_CTX *ctx);
	int TS_CONF_set_clock_precision_digits(const CONF conf, const char section,
	TS_RESP_CTX *ctx);
	int TS_CONF_set_ordering(CONF conf, const char section, TS_RESP_CTX *ctx);
	int TS_CONF_set_tsa_name(CONF conf, const char section, TS_RESP_CTX *ctx);
	int TS_CONF_set_ess_cert_id_chain(CONF conf, const char section,
	TS_RESP_CTX *ctx);
	int TS_CONF_set_ess_cert_id_digest(CONF conf, const char section,
	TS_RESP_CTX *ctx);

	# ifdef __cplusplus
	}
	# endif
	# endif
	#endif