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Current File : /usr/include/openssl/ts.h
/* crypto/ts/ts.h */
/*
 * Written by Zoltan Glozik (zglozik@opentsa.org) for the OpenSSL project
 * 2002, 2003, 2004.
 */
/* ====================================================================
 * Copyright (c) 2006 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 HEADER_TS_H
# define HEADER_TS_H

# include <openssl/opensslconf.h>
# include <openssl/symhacks.h>
# ifndef OPENSSL_NO_BUFFER
#  include <openssl/buffer.h>
# endif
# ifndef OPENSSL_NO_EVP
#  include <openssl/evp.h>
# endif
# ifndef OPENSSL_NO_BIO
#  include <openssl/bio.h>
# endif
# include <openssl/stack.h>
# include <openssl/asn1.h>
# include <openssl/safestack.h>

# ifndef OPENSSL_NO_RSA
#  include <openssl/rsa.h>
# endif

# ifndef OPENSSL_NO_DSA
#  include <openssl/dsa.h>
# endif

# ifndef OPENSSL_NO_DH
#  include <openssl/dh.h>
# endif

#ifdef  __cplusplus
extern "C" {
#endif

# ifdef WIN32
/* Under Win32 this is defined in wincrypt.h */
#  undef X509_NAME
# endif

# include <openssl/x509.h>
# include <openssl/x509v3.h>

/*-
MessageImprint ::= SEQUENCE  {
     hashAlgorithm                AlgorithmIdentifier,
     hashedMessage                OCTET STRING  }
*/

typedef struct TS_msg_imprint_st {
    X509_ALGOR *hash_algo;
    ASN1_OCTET_STRING *hashed_msg;
} TS_MSG_IMPRINT;

/*-
TimeStampReq ::= SEQUENCE  {
   version                  INTEGER  { v1(1) },
   messageImprint           MessageImprint,
     --a hash algorithm OID and the hash value of the data to be
     --time-stamped
   reqPolicy                TSAPolicyId                OPTIONAL,
   nonce                    INTEGER                    OPTIONAL,
   certReq                  BOOLEAN                    DEFAULT FALSE,
   extensions               [0] IMPLICIT Extensions    OPTIONAL  }
*/

typedef struct TS_req_st {
    ASN1_INTEGER *version;
    TS_MSG_IMPRINT *msg_imprint;
    ASN1_OBJECT *policy_id;     /* OPTIONAL */
    ASN1_INTEGER *nonce;        /* OPTIONAL */
    ASN1_BOOLEAN cert_req;      /* DEFAULT FALSE */
    STACK_OF(X509_EXTENSION) *extensions; /* [0] OPTIONAL */
} TS_REQ;

/*-
Accuracy ::= SEQUENCE {
                seconds        INTEGER           OPTIONAL,
                millis     [0] INTEGER  (1..999) OPTIONAL,
                micros     [1] INTEGER  (1..999) OPTIONAL  }
*/

typedef struct TS_accuracy_st {
    ASN1_INTEGER *seconds;
    ASN1_INTEGER *millis;
    ASN1_INTEGER *micros;
} TS_ACCURACY;

/*-
TSTInfo ::= SEQUENCE  {
    version                      INTEGER  { v1(1) },
    policy                       TSAPolicyId,
    messageImprint               MessageImprint,
      -- MUST have the same value as the similar field in
      -- TimeStampReq
    serialNumber                 INTEGER,
     -- Time-Stamping users MUST be ready to accommodate integers
     -- up to 160 bits.
    genTime                      GeneralizedTime,
    accuracy                     Accuracy                 OPTIONAL,
    ordering                     BOOLEAN             DEFAULT FALSE,
    nonce                        INTEGER                  OPTIONAL,
      -- MUST be present if the similar field was present
      -- in TimeStampReq.  In that case it MUST have the same value.
    tsa                          [0] GeneralName          OPTIONAL,
    extensions                   [1] IMPLICIT Extensions  OPTIONAL   }
*/

typedef struct TS_tst_info_st {
    ASN1_INTEGER *version;
    ASN1_OBJECT *policy_id;
    TS_MSG_IMPRINT *msg_imprint;
    ASN1_INTEGER *serial;
    ASN1_GENERALIZEDTIME *time;
    TS_ACCURACY *accuracy;
    ASN1_BOOLEAN ordering;
    ASN1_INTEGER *nonce;
    GENERAL_NAME *tsa;
    STACK_OF(X509_EXTENSION) *extensions;
} TS_TST_INFO;

/*-
PKIStatusInfo ::= SEQUENCE {
    status        PKIStatus,
    statusString  PKIFreeText     OPTIONAL,
    failInfo      PKIFailureInfo  OPTIONAL  }

From RFC 1510 - section 3.1.1:
PKIFreeText ::= SEQUENCE SIZE (1..MAX) OF UTF8String
        -- text encoded as UTF-8 String (note:  each UTF8String SHOULD
        -- include an RFC 1766 language tag to indicate the language
        -- of the contained text)
*/

/* Possible values for status. See ts_resp_print.c && ts_resp_verify.c. */

# 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. See ts_resp_print.c && ts_resp_verify.c
 */

# 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 {
    ASN1_INTEGER *status;
    STACK_OF(ASN1_UTF8STRING) *text;
    ASN1_BIT_STRING *failure_info;
} TS_STATUS_INFO;

DECLARE_STACK_OF(ASN1_UTF8STRING)
DECLARE_ASN1_SET_OF(ASN1_UTF8STRING)

/*-
TimeStampResp ::= SEQUENCE  {
     status                  PKIStatusInfo,
     timeStampToken          TimeStampToken     OPTIONAL }
*/

typedef struct TS_resp_st {
    TS_STATUS_INFO *status_info;
    PKCS7 *token;
    TS_TST_INFO *tst_info;
} TS_RESP;

/* The structure below would belong to the ESS component. */

/*-
IssuerSerial ::= SEQUENCE {
        issuer                   GeneralNames,
        serialNumber             CertificateSerialNumber
        }
*/

typedef struct ESS_issuer_serial {
    STACK_OF(GENERAL_NAME) *issuer;
    ASN1_INTEGER *serial;
} ESS_ISSUER_SERIAL;

/*-
ESSCertID ::=  SEQUENCE {
        certHash                 Hash,
        issuerSerial             IssuerSerial OPTIONAL
}
*/

typedef struct ESS_cert_id {
    ASN1_OCTET_STRING *hash;    /* Always SHA-1 digest. */
    ESS_ISSUER_SERIAL *issuer_serial;
} ESS_CERT_ID;

DECLARE_STACK_OF(ESS_CERT_ID)
DECLARE_ASN1_SET_OF(ESS_CERT_ID)

/*-
SigningCertificate ::=  SEQUENCE {
       certs        SEQUENCE OF ESSCertID,
       policies     SEQUENCE OF PolicyInformation OPTIONAL
}
*/

typedef struct ESS_signing_cert {
    STACK_OF(ESS_CERT_ID) *cert_ids;
    STACK_OF(POLICYINFO) *policy_info;
} ESS_SIGNING_CERT;

TS_REQ *TS_REQ_new(void);
void TS_REQ_free(TS_REQ *a);
int i2d_TS_REQ(const TS_REQ *a, unsigned char **pp);
TS_REQ *d2i_TS_REQ(TS_REQ **a, const unsigned char **pp, long length);

TS_REQ *TS_REQ_dup(TS_REQ *a);

TS_REQ *d2i_TS_REQ_fp(FILE *fp, TS_REQ **a);
int i2d_TS_REQ_fp(FILE *fp, TS_REQ *a);
TS_REQ *d2i_TS_REQ_bio(BIO *fp, TS_REQ **a);
int i2d_TS_REQ_bio(BIO *fp, TS_REQ *a);

TS_MSG_IMPRINT *TS_MSG_IMPRINT_new(void);
void TS_MSG_IMPRINT_free(TS_MSG_IMPRINT *a);
int i2d_TS_MSG_IMPRINT(const TS_MSG_IMPRINT *a, unsigned char **pp);
TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT(TS_MSG_IMPRINT **a,
                                   const unsigned char **pp, long length);

TS_MSG_IMPRINT *TS_MSG_IMPRINT_dup(TS_MSG_IMPRINT *a);

TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT_fp(FILE *fp, TS_MSG_IMPRINT **a);
int i2d_TS_MSG_IMPRINT_fp(FILE *fp, TS_MSG_IMPRINT *a);
TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT_bio(BIO *fp, TS_MSG_IMPRINT **a);
int i2d_TS_MSG_IMPRINT_bio(BIO *fp, TS_MSG_IMPRINT *a);

TS_RESP *TS_RESP_new(void);
void TS_RESP_free(TS_RESP *a);
int i2d_TS_RESP(const TS_RESP *a, unsigned char **pp);
TS_RESP *d2i_TS_RESP(TS_RESP **a, const unsigned char **pp, long length);
TS_TST_INFO *PKCS7_to_TS_TST_INFO(PKCS7 *token);
TS_RESP *TS_RESP_dup(TS_RESP *a);

TS_RESP *d2i_TS_RESP_fp(FILE *fp, TS_RESP **a);
int i2d_TS_RESP_fp(FILE *fp, TS_RESP *a);
TS_RESP *d2i_TS_RESP_bio(BIO *fp, TS_RESP **a);
int i2d_TS_RESP_bio(BIO *fp, TS_RESP *a);

TS_STATUS_INFO *TS_STATUS_INFO_new(void);
void TS_STATUS_INFO_free(TS_STATUS_INFO *a);
int i2d_TS_STATUS_INFO(const TS_STATUS_INFO *a, unsigned char **pp);
TS_STATUS_INFO *d2i_TS_STATUS_INFO(TS_STATUS_INFO **a,
                                   const unsigned char **pp, long length);
TS_STATUS_INFO *TS_STATUS_INFO_dup(TS_STATUS_INFO *a);

TS_TST_INFO *TS_TST_INFO_new(void);
void TS_TST_INFO_free(TS_TST_INFO *a);
int i2d_TS_TST_INFO(const TS_TST_INFO *a, unsigned char **pp);
TS_TST_INFO *d2i_TS_TST_INFO(TS_TST_INFO **a, const unsigned char **pp,
                             long length);
TS_TST_INFO *TS_TST_INFO_dup(TS_TST_INFO *a);

TS_TST_INFO *d2i_TS_TST_INFO_fp(FILE *fp, TS_TST_INFO **a);
int i2d_TS_TST_INFO_fp(FILE *fp, TS_TST_INFO *a);
TS_TST_INFO *d2i_TS_TST_INFO_bio(BIO *fp, TS_TST_INFO **a);
int i2d_TS_TST_INFO_bio(BIO *fp, TS_TST_INFO *a);

TS_ACCURACY *TS_ACCURACY_new(void);
void TS_ACCURACY_free(TS_ACCURACY *a);
int i2d_TS_ACCURACY(const TS_ACCURACY *a, unsigned char **pp);
TS_ACCURACY *d2i_TS_ACCURACY(TS_ACCURACY **a, const unsigned char **pp,
                             long length);
TS_ACCURACY *TS_ACCURACY_dup(TS_ACCURACY *a);

ESS_ISSUER_SERIAL *ESS_ISSUER_SERIAL_new(void);
void ESS_ISSUER_SERIAL_free(ESS_ISSUER_SERIAL *a);
int i2d_ESS_ISSUER_SERIAL(const ESS_ISSUER_SERIAL *a, unsigned char **pp);
ESS_ISSUER_SERIAL *d2i_ESS_ISSUER_SERIAL(ESS_ISSUER_SERIAL **a,
                                         const unsigned char **pp,
                                         long length);
ESS_ISSUER_SERIAL *ESS_ISSUER_SERIAL_dup(ESS_ISSUER_SERIAL *a);

ESS_CERT_ID *ESS_CERT_ID_new(void);
void ESS_CERT_ID_free(ESS_CERT_ID *a);
int i2d_ESS_CERT_ID(const ESS_CERT_ID *a, unsigned char **pp);
ESS_CERT_ID *d2i_ESS_CERT_ID(ESS_CERT_ID **a, const unsigned char **pp,
                             long length);
ESS_CERT_ID *ESS_CERT_ID_dup(ESS_CERT_ID *a);

ESS_SIGNING_CERT *ESS_SIGNING_CERT_new(void);
void ESS_SIGNING_CERT_free(ESS_SIGNING_CERT *a);
int i2d_ESS_SIGNING_CERT(const ESS_SIGNING_CERT *a, unsigned char **pp);
ESS_SIGNING_CERT *d2i_ESS_SIGNING_CERT(ESS_SIGNING_CERT **a,
                                       const unsigned char **pp, long length);
ESS_SIGNING_CERT *ESS_SIGNING_CERT_dup(ESS_SIGNING_CERT *a);

void ERR_load_TS_strings(void);

int TS_REQ_set_version(TS_REQ *a, long version);
long TS_REQ_get_version(const TS_REQ *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, 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, 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, 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 {
    X509 *signer_cert;
    EVP_PKEY *signer_key;
    STACK_OF(X509) *certs;      /* Certs to include in signed data. */
    STACK_OF(ASN1_OBJECT) *policies; /* Acceptable policies. */
    ASN1_OBJECT *default_policy; /* It may appear in policies, too. */
    STACK_OF(EVP_MD) *mds;      /* Acceptable message digests. */
    ASN1_INTEGER *seconds;      /* accuracy, 0 means not specified. */
    ASN1_INTEGER *millis;       /* accuracy, 0 means not specified. */
    ASN1_INTEGER *micros;       /* accuracy, 0 means not specified. */
    unsigned clock_precision_digits; /* fraction of seconds in time stamp
                                      * token. */
    unsigned flags;             /* Optional info, see values above. */
    /* Callback functions. */
    TS_serial_cb serial_cb;
    void *serial_cb_data;       /* User data for serial_cb. */
    TS_time_cb time_cb;
    void *time_cb_data;         /* User data for time_cb. */
    TS_extension_cb extension_cb;
    void *extension_cb_data;    /* User data for extension_cb. */
    /* These members are used only while creating the response. */
    TS_REQ *request;
    TS_RESP *response;
    TS_TST_INFO *tst_info;
} TS_RESP_CTX;

DECLARE_STACK_OF(EVP_MD)
DECLARE_ASN1_SET_OF(EVP_MD)

/* Creates a response context that can be used for generating responses. */
TS_RESP_CTX *TS_RESP_CTX_new(void);
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);

/* This parameter must be set. */
int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, 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, 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 {
    /* Set this to the union of TS_VFY_... flags you want to carry out. */
    unsigned flags;
    /* Must be set only with TS_VFY_SIGNATURE. certs is optional. */
    X509_STORE *store;
    STACK_OF(X509) *certs;
    /* Must be set only with TS_VFY_POLICY. */
    ASN1_OBJECT *policy;
    /*
     * Must be set only with TS_VFY_IMPRINT. If md_alg is NULL, the
     * algorithm from the response is used.
     */
    X509_ALGOR *md_alg;
    unsigned char *imprint;
    unsigned imprint_len;
    /* Must be set only with TS_VFY_DATA. */
    BIO *data;
    /* Must be set only with TS_VFY_TSA_NAME. */
    ASN1_INTEGER *nonce;
    /* Must be set only with TS_VFY_TSA_NAME. */
    GENERAL_NAME *tsa_name;
} 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,
 * they are defined in ts/ts_verify_ctx.c.
 */

/* Set all fields to zero. */
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);

/*-
 * 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);
int TS_CONF_set_crypto_device(CONF *conf, const char *section,
                              const char *device);
int TS_CONF_set_default_engine(const char *name);
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_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(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);

/* -------------------------------------------------- */
/* BEGIN ERROR CODES */
/*
 * The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_TS_strings(void);

/* Error codes for the TS functions. */

/* Function codes. */
# define TS_F_D2I_TS_RESP                                 147
# define TS_F_DEF_SERIAL_CB                               110
# define TS_F_DEF_TIME_CB                                 111
# define TS_F_ESS_ADD_SIGNING_CERT                        112
# define TS_F_ESS_CERT_ID_NEW_INIT                        113
# define TS_F_ESS_SIGNING_CERT_NEW_INIT                   114
# define TS_F_INT_TS_RESP_VERIFY_TOKEN                    149
# define TS_F_PKCS7_TO_TS_TST_INFO                        148
# define TS_F_TS_ACCURACY_SET_MICROS                      115
# define TS_F_TS_ACCURACY_SET_MILLIS                      116
# define TS_F_TS_ACCURACY_SET_SECONDS                     117
# define TS_F_TS_CHECK_IMPRINTS                           100
# define TS_F_TS_CHECK_NONCES                             101
# define TS_F_TS_CHECK_POLICY                             102
# define TS_F_TS_CHECK_SIGNING_CERTS                      103
# define TS_F_TS_CHECK_STATUS_INFO                        104
# define TS_F_TS_COMPUTE_IMPRINT                          145
# define TS_F_TS_CONF_SET_DEFAULT_ENGINE                  146
# define TS_F_TS_GET_STATUS_TEXT                          105
# define TS_F_TS_MSG_IMPRINT_SET_ALGO                     118
# define TS_F_TS_REQ_SET_MSG_IMPRINT                      119
# define TS_F_TS_REQ_SET_NONCE                            120
# define TS_F_TS_REQ_SET_POLICY_ID                        121
# define TS_F_TS_RESP_CREATE_RESPONSE                     122
# define TS_F_TS_RESP_CREATE_TST_INFO                     123
# define TS_F_TS_RESP_CTX_ADD_FAILURE_INFO                124
# define TS_F_TS_RESP_CTX_ADD_MD                          125
# define TS_F_TS_RESP_CTX_ADD_POLICY                      126
# define TS_F_TS_RESP_CTX_NEW                             127
# define TS_F_TS_RESP_CTX_SET_ACCURACY                    128
# define TS_F_TS_RESP_CTX_SET_CERTS                       129
# define TS_F_TS_RESP_CTX_SET_DEF_POLICY                  130
# define TS_F_TS_RESP_CTX_SET_SIGNER_CERT                 131
# define TS_F_TS_RESP_CTX_SET_STATUS_INFO                 132
# define TS_F_TS_RESP_GET_POLICY                          133
# define TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION          134
# define TS_F_TS_RESP_SET_STATUS_INFO                     135
# define TS_F_TS_RESP_SET_TST_INFO                        150
# define TS_F_TS_RESP_SIGN                                136
# define TS_F_TS_RESP_VERIFY_SIGNATURE                    106
# define TS_F_TS_RESP_VERIFY_TOKEN                        107
# define TS_F_TS_TST_INFO_SET_ACCURACY                    137
# define TS_F_TS_TST_INFO_SET_MSG_IMPRINT                 138
# define TS_F_TS_TST_INFO_SET_NONCE                       139
# define TS_F_TS_TST_INFO_SET_POLICY_ID                   140
# define TS_F_TS_TST_INFO_SET_SERIAL                      141
# define TS_F_TS_TST_INFO_SET_TIME                        142
# define TS_F_TS_TST_INFO_SET_TSA                         143
# define TS_F_TS_VERIFY                                   108
# define TS_F_TS_VERIFY_CERT                              109
# define TS_F_TS_VERIFY_CTX_NEW                           144

/* Reason codes. */
# define TS_R_BAD_PKCS7_TYPE                              132
# define TS_R_BAD_TYPE                                    133
# define TS_R_CERTIFICATE_VERIFY_ERROR                    100
# define TS_R_COULD_NOT_SET_ENGINE                        127
# define TS_R_COULD_NOT_SET_TIME                          115
# define TS_R_D2I_TS_RESP_INT_FAILED                      128
# define TS_R_DETACHED_CONTENT                            134
# define TS_R_ESS_ADD_SIGNING_CERT_ERROR                  116
# define TS_R_ESS_SIGNING_CERTIFICATE_ERROR               101
# define TS_R_INVALID_NULL_POINTER                        102
# define TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE          117
# define TS_R_MESSAGE_IMPRINT_MISMATCH                    103
# define TS_R_NONCE_MISMATCH                              104
# define TS_R_NONCE_NOT_RETURNED                          105
# define TS_R_NO_CONTENT                                  106
# define TS_R_NO_TIME_STAMP_TOKEN                         107
# define TS_R_PKCS7_ADD_SIGNATURE_ERROR                   118
# define TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR                 119
# define TS_R_PKCS7_TO_TS_TST_INFO_FAILED                 129
# define TS_R_POLICY_MISMATCH                             108
# define TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE      120
# define TS_R_RESPONSE_SETUP_ERROR                        121
# define TS_R_SIGNATURE_FAILURE                           109
# define TS_R_THERE_MUST_BE_ONE_SIGNER                    110
# define TS_R_TIME_SYSCALL_ERROR                          122
# define TS_R_TOKEN_NOT_PRESENT                           130
# define TS_R_TOKEN_PRESENT                               131
# define TS_R_TSA_NAME_MISMATCH                           111
# define TS_R_TSA_UNTRUSTED                               112
# define TS_R_TST_INFO_SETUP_ERROR                        123
# define TS_R_TS_DATASIGN                                 124
# define TS_R_UNACCEPTABLE_POLICY                         125
# define TS_R_UNSUPPORTED_MD_ALGORITHM                    126
# define TS_R_UNSUPPORTED_VERSION                         113
# define TS_R_WRONG_CONTENT_TYPE                          114

#ifdef  __cplusplus
}
#endif
#endif

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