include/openssl/ts.h

   1 /*
   2  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   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
   8  */
   9
  10 #ifndef OPENSSL_TS_H
  11 # define OPENSSL_TS_H
  12 # pragma once
  13
  14 # include <openssl/macros.h>
  15 # ifndef OPENSSL_NO_DEPRECATED_3_0
  16 #  define HEADER_TS_H
  17 # endif
  18
  19 # include <openssl/opensslconf.h>
  20
  21 # ifndef OPENSSL_NO_TS
  22 # include <openssl/symhacks.h>
  23 # include <openssl/buffer.h>
  24 # include <openssl/evp.h>
  25 # include <openssl/bio.h>
  26 # include <openssl/asn1.h>
  27 # include <openssl/safestack.h>
  28 # include <openssl/rsa.h>
  29 # include <openssl/dsa.h>
  30 # include <openssl/dh.h>
  31 # include <openssl/tserr.h>
  32 # include <openssl/ess.h>
  33 # ifdef  __cplusplus
  34 extern "C" {
  35 # endif
  36
  37 # include <openssl/x509.h>
  38 # include <openssl/x509v3.h>
  39
  40 typedef struct TS_msg_imprint_st TS_MSG_IMPRINT;
  41 typedef struct TS_req_st TS_REQ;
  42 typedef struct TS_accuracy_st TS_ACCURACY;
  43 typedef struct TS_tst_info_st TS_TST_INFO;
  44
  45 /* Possible values for status. */
  46 # define TS_STATUS_GRANTED                       0
  47 # define TS_STATUS_GRANTED_WITH_MODS             1
  48 # define TS_STATUS_REJECTION                     2
  49 # define TS_STATUS_WAITING                       3
  50 # define TS_STATUS_REVOCATION_WARNING            4
  51 # define TS_STATUS_REVOCATION_NOTIFICATION       5
  52
  53 /* Possible values for failure_info. */
  54 # define TS_INFO_BAD_ALG                 0
  55 # define TS_INFO_BAD_REQUEST             2
  56 # define TS_INFO_BAD_DATA_FORMAT         5
  57 # define TS_INFO_TIME_NOT_AVAILABLE      14
  58 # define TS_INFO_UNACCEPTED_POLICY       15
  59 # define TS_INFO_UNACCEPTED_EXTENSION    16
  60 # define TS_INFO_ADD_INFO_NOT_AVAILABLE  17
  61 # define TS_INFO_SYSTEM_FAILURE          25
  62
  63
  64 typedef struct TS_status_info_st TS_STATUS_INFO;
  65
  66 typedef struct TS_resp_st TS_RESP;
  67
  68 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_REQ)
  69 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_REQ, TS_REQ)
  70 DECLARE_ASN1_DUP_FUNCTION(TS_REQ)
  71
  72 #ifndef OPENSSL_NO_STDIO
  73 TS_REQ *d2i_TS_REQ_fp(FILE *fp, TS_REQ **a);
  74 int i2d_TS_REQ_fp(FILE *fp, const TS_REQ *a);
  75 #endif
  76 TS_REQ *d2i_TS_REQ_bio(BIO *fp, TS_REQ **a);
  77 int i2d_TS_REQ_bio(BIO *fp, const TS_REQ *a);
  78
  79 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_MSG_IMPRINT)
  80 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_MSG_IMPRINT, TS_MSG_IMPRINT)
  81 DECLARE_ASN1_DUP_FUNCTION(TS_MSG_IMPRINT)
  82
  83 #ifndef OPENSSL_NO_STDIO
  84 TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT_fp(FILE *fp, TS_MSG_IMPRINT **a);
  85 int i2d_TS_MSG_IMPRINT_fp(FILE *fp, const TS_MSG_IMPRINT *a);
  86 #endif
  87 TS_MSG_IMPRINT *d2i_TS_MSG_IMPRINT_bio(BIO *bio, TS_MSG_IMPRINT **a);
  88 int i2d_TS_MSG_IMPRINT_bio(BIO *bio, const TS_MSG_IMPRINT *a);
  89
  90 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_RESP)
  91 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_RESP, TS_RESP)
  92 DECLARE_ASN1_DUP_FUNCTION(TS_RESP)
  93
  94 #ifndef OPENSSL_NO_STDIO
  95 TS_RESP *d2i_TS_RESP_fp(FILE *fp, TS_RESP **a);
  96 int i2d_TS_RESP_fp(FILE *fp, const TS_RESP *a);
  97 #endif
  98 TS_RESP *d2i_TS_RESP_bio(BIO *bio, TS_RESP **a);
  99 int i2d_TS_RESP_bio(BIO *bio, const TS_RESP *a);
 100
 101 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_STATUS_INFO)
 102 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_STATUS_INFO, TS_STATUS_INFO)
 103 DECLARE_ASN1_DUP_FUNCTION(TS_STATUS_INFO)
 104
 105 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_TST_INFO)
 106 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_TST_INFO, TS_TST_INFO)
 107 DECLARE_ASN1_DUP_FUNCTION(TS_TST_INFO)
 108 TS_TST_INFO *PKCS7_to_TS_TST_INFO(PKCS7 *token);
 109
 110 #ifndef OPENSSL_NO_STDIO
 111 TS_TST_INFO *d2i_TS_TST_INFO_fp(FILE *fp, TS_TST_INFO **a);
 112 int i2d_TS_TST_INFO_fp(FILE *fp, const TS_TST_INFO *a);
 113 #endif
 114 TS_TST_INFO *d2i_TS_TST_INFO_bio(BIO *bio, TS_TST_INFO **a);
 115 int i2d_TS_TST_INFO_bio(BIO *bio, const TS_TST_INFO *a);
 116
 117 DECLARE_ASN1_ALLOC_FUNCTIONS(TS_ACCURACY)
 118 DECLARE_ASN1_ENCODE_FUNCTIONS_only(TS_ACCURACY, TS_ACCURACY)
 119 DECLARE_ASN1_DUP_FUNCTION(TS_ACCURACY)
 120
 121 int TS_REQ_set_version(TS_REQ *a, long version);
 122 long TS_REQ_get_version(const TS_REQ *a);
 123
 124 int TS_STATUS_INFO_set_status(TS_STATUS_INFO *a, int i);
 125 const ASN1_INTEGER *TS_STATUS_INFO_get0_status(const TS_STATUS_INFO *a);
 126
 127 const STACK_OF(ASN1_UTF8STRING) *
 128 TS_STATUS_INFO_get0_text(const TS_STATUS_INFO *a);
 129
 130 const ASN1_BIT_STRING *
 131 TS_STATUS_INFO_get0_failure_info(const TS_STATUS_INFO *a);
 132
 133 int TS_REQ_set_msg_imprint(TS_REQ *a, TS_MSG_IMPRINT *msg_imprint);
 134 TS_MSG_IMPRINT *TS_REQ_get_msg_imprint(TS_REQ *a);
 135
 136 int TS_MSG_IMPRINT_set_algo(TS_MSG_IMPRINT *a, X509_ALGOR *alg);
 137 X509_ALGOR *TS_MSG_IMPRINT_get_algo(TS_MSG_IMPRINT *a);
 138
 139 int TS_MSG_IMPRINT_set_msg(TS_MSG_IMPRINT *a, unsigned char *d, int len);
 140 ASN1_OCTET_STRING *TS_MSG_IMPRINT_get_msg(TS_MSG_IMPRINT *a);
 141
 142 int TS_REQ_set_policy_id(TS_REQ *a, const ASN1_OBJECT *policy);
 143 ASN1_OBJECT *TS_REQ_get_policy_id(TS_REQ *a);
 144
 145 int TS_REQ_set_nonce(TS_REQ *a, const ASN1_INTEGER *nonce);
 146 const ASN1_INTEGER *TS_REQ_get_nonce(const TS_REQ *a);
 147
 148 int TS_REQ_set_cert_req(TS_REQ *a, int cert_req);
 149 int TS_REQ_get_cert_req(const TS_REQ *a);
 150
 151 STACK_OF(X509_EXTENSION) *TS_REQ_get_exts(TS_REQ *a);
 152 void TS_REQ_ext_free(TS_REQ *a);
 153 int TS_REQ_get_ext_count(TS_REQ *a);
 154 int TS_REQ_get_ext_by_NID(TS_REQ *a, int nid, int lastpos);
 155 int TS_REQ_get_ext_by_OBJ(TS_REQ *a, const ASN1_OBJECT *obj, int lastpos);
 156 int TS_REQ_get_ext_by_critical(TS_REQ *a, int crit, int lastpos);
 157 X509_EXTENSION *TS_REQ_get_ext(TS_REQ *a, int loc);
 158 X509_EXTENSION *TS_REQ_delete_ext(TS_REQ *a, int loc);
 159 int TS_REQ_add_ext(TS_REQ *a, X509_EXTENSION *ex, int loc);
 160 void *TS_REQ_get_ext_d2i(TS_REQ *a, int nid, int *crit, int *idx);
 161
 162 /* Function declarations for TS_REQ defined in ts/ts_req_print.c */
 163
 164 int TS_REQ_print_bio(BIO *bio, TS_REQ *a);
 165
 166 /* Function declarations for TS_RESP defined in ts/ts_resp_utils.c */
 167
 168 int TS_RESP_set_status_info(TS_RESP *a, TS_STATUS_INFO *info);
 169 TS_STATUS_INFO *TS_RESP_get_status_info(TS_RESP *a);
 170
 171 /* Caller loses ownership of PKCS7 and TS_TST_INFO objects. */
 172 void TS_RESP_set_tst_info(TS_RESP *a, PKCS7 *p7, TS_TST_INFO *tst_info);
 173 PKCS7 *TS_RESP_get_token(TS_RESP *a);
 174 TS_TST_INFO *TS_RESP_get_tst_info(TS_RESP *a);
 175
 176 int TS_TST_INFO_set_version(TS_TST_INFO *a, long version);
 177 long TS_TST_INFO_get_version(const TS_TST_INFO *a);
 178
 179 int TS_TST_INFO_set_policy_id(TS_TST_INFO *a, ASN1_OBJECT *policy_id);
 180 ASN1_OBJECT *TS_TST_INFO_get_policy_id(TS_TST_INFO *a);
 181
 182 int TS_TST_INFO_set_msg_imprint(TS_TST_INFO *a, TS_MSG_IMPRINT *msg_imprint);
 183 TS_MSG_IMPRINT *TS_TST_INFO_get_msg_imprint(TS_TST_INFO *a);
 184
 185 int TS_TST_INFO_set_serial(TS_TST_INFO *a, const ASN1_INTEGER *serial);
 186 const ASN1_INTEGER *TS_TST_INFO_get_serial(const TS_TST_INFO *a);
 187
 188 int TS_TST_INFO_set_time(TS_TST_INFO *a, const ASN1_GENERALIZEDTIME *gtime);
 189 const ASN1_GENERALIZEDTIME *TS_TST_INFO_get_time(const TS_TST_INFO *a);
 190
 191 int TS_TST_INFO_set_accuracy(TS_TST_INFO *a, TS_ACCURACY *accuracy);
 192 TS_ACCURACY *TS_TST_INFO_get_accuracy(TS_TST_INFO *a);
 193
 194 int TS_ACCURACY_set_seconds(TS_ACCURACY *a, const ASN1_INTEGER *seconds);
 195 const ASN1_INTEGER *TS_ACCURACY_get_seconds(const TS_ACCURACY *a);
 196
 197 int TS_ACCURACY_set_millis(TS_ACCURACY *a, const ASN1_INTEGER *millis);
 198 const ASN1_INTEGER *TS_ACCURACY_get_millis(const TS_ACCURACY *a);
 199
 200 int TS_ACCURACY_set_micros(TS_ACCURACY *a, const ASN1_INTEGER *micros);
 201 const ASN1_INTEGER *TS_ACCURACY_get_micros(const TS_ACCURACY *a);
 202
 203 int TS_TST_INFO_set_ordering(TS_TST_INFO *a, int ordering);
 204 int TS_TST_INFO_get_ordering(const TS_TST_INFO *a);
 205
 206 int TS_TST_INFO_set_nonce(TS_TST_INFO *a, const ASN1_INTEGER *nonce);
 207 const ASN1_INTEGER *TS_TST_INFO_get_nonce(const TS_TST_INFO *a);
 208
 209 int TS_TST_INFO_set_tsa(TS_TST_INFO *a, GENERAL_NAME *tsa);
 210 GENERAL_NAME *TS_TST_INFO_get_tsa(TS_TST_INFO *a);
 211
 212 STACK_OF(X509_EXTENSION) *TS_TST_INFO_get_exts(TS_TST_INFO *a);
 213 void TS_TST_INFO_ext_free(TS_TST_INFO *a);
 214 int TS_TST_INFO_get_ext_count(TS_TST_INFO *a);
 215 int TS_TST_INFO_get_ext_by_NID(TS_TST_INFO *a, int nid, int lastpos);
 216 int TS_TST_INFO_get_ext_by_OBJ(TS_TST_INFO *a, const ASN1_OBJECT *obj,
 217                                int lastpos);
 218 int TS_TST_INFO_get_ext_by_critical(TS_TST_INFO *a, int crit, int lastpos);
 219 X509_EXTENSION *TS_TST_INFO_get_ext(TS_TST_INFO *a, int loc);
 220 X509_EXTENSION *TS_TST_INFO_delete_ext(TS_TST_INFO *a, int loc);
 221 int TS_TST_INFO_add_ext(TS_TST_INFO *a, X509_EXTENSION *ex, int loc);
 222 void *TS_TST_INFO_get_ext_d2i(TS_TST_INFO *a, int nid, int *crit, int *idx);
 223
 224 /*
 225  * Declarations related to response generation, defined in ts/ts_resp_sign.c.
 226  */
 227
 228 /* Optional flags for response generation. */
 229
 230 /* Don't include the TSA name in response. */
 231 # define TS_TSA_NAME             0x01
 232
 233 /* Set ordering to true in response. */
 234 # define TS_ORDERING             0x02
 235
 236 /*
 237  * Include the signer certificate and the other specified certificates in
 238  * the ESS signing certificate attribute beside the PKCS7 signed data.
 239  * Only the signer certificates is included by default.
 240  */
 241 # define TS_ESS_CERT_ID_CHAIN    0x04
 242
 243 /* Forward declaration. */
 244 struct TS_resp_ctx;
 245
 246 /* This must return a unique number less than 160 bits long. */
 247 typedef ASN1_INTEGER *(*TS_serial_cb) (struct TS_resp_ctx *, void *);
 248
 249 /*
 250  * This must return the seconds and microseconds since Jan 1, 1970 in the sec
 251  * and usec variables allocated by the caller. Return non-zero for success
 252  * and zero for failure.
 253  */
 254 typedef int (*TS_time_cb) (struct TS_resp_ctx *, void *, long *sec,
 255                            long *usec);
 256
 257 /*
 258  * This must process the given extension. It can modify the TS_TST_INFO
 259  * object of the context. Return values: !0 (processed), 0 (error, it must
 260  * set the status info/failure info of the response).
 261  */
 262 typedef int (*TS_extension_cb) (struct TS_resp_ctx *, X509_EXTENSION *,
 263                                 void *);
 264
 265 typedef struct TS_resp_ctx TS_RESP_CTX;
 266
 267 DEFINE_STACK_OF_CONST(EVP_MD)
 268
 269 /* Creates a response context that can be used for generating responses. */
 270 TS_RESP_CTX *TS_RESP_CTX_new(void);
 271 void TS_RESP_CTX_free(TS_RESP_CTX *ctx);
 272
 273 /* This parameter must be set. */
 274 int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer);
 275
 276 /* This parameter must be set. */
 277 int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key);
 278
 279 int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx,
 280                                   const EVP_MD *signer_digest);
 281 int TS_RESP_CTX_set_ess_cert_id_digest(TS_RESP_CTX *ctx, const EVP_MD *md);
 282
 283 /* This parameter must be set. */
 284 int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy);
 285
 286 /* No additional certs are included in the response by default. */
 287 int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs);
 288
 289 /*
 290  * Adds a new acceptable policy, only the default policy is accepted by
 291  * default.
 292  */
 293 int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy);
 294
 295 /*
 296  * Adds a new acceptable message digest. Note that no message digests are
 297  * accepted by default. The md argument is shared with the caller.
 298  */
 299 int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md);
 300
 301 /* Accuracy is not included by default. */
 302 int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx,
 303                              int secs, int millis, int micros);
 304
 305 /*
 306  * Clock precision digits, i.e. the number of decimal digits: '0' means sec,
 307  * '3' msec, '6' usec, and so on. Default is 0.
 308  */
 309 int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx,
 310                                            unsigned clock_precision_digits);
 311 /* At most we accept usec precision. */
 312 # define TS_MAX_CLOCK_PRECISION_DIGITS   6
 313
 314 /* Maximum status message length */
 315 # define TS_MAX_STATUS_LENGTH   (1024 * 1024)
 316
 317 /* No flags are set by default. */
 318 void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags);
 319
 320 /* Default callback always returns a constant. */
 321 void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data);
 322
 323 /* Default callback uses the gettimeofday() and gmtime() system calls. */
 324 void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data);
 325
 326 /*
 327  * Default callback rejects all extensions. The extension callback is called
 328  * when the TS_TST_INFO object is already set up and not signed yet.
 329  */
 330 /* FIXME: extension handling is not tested yet. */
 331 void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx,
 332                                   TS_extension_cb cb, void *data);
 333
 334 /* The following methods can be used in the callbacks. */
 335 int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx,
 336                                 int status, const char *text);
 337
 338 /* Sets the status info only if it is still TS_STATUS_GRANTED. */
 339 int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx,
 340                                      int status, const char *text);
 341
 342 int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure);
 343
 344 /* The get methods below can be used in the extension callback. */
 345 TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx);
 346
 347 TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx);
 348
 349 /*
 350  * Creates the signed TS_TST_INFO and puts it in TS_RESP.
 351  * In case of errors it sets the status info properly.
 352  * Returns NULL only in case of memory allocation/fatal error.
 353  */
 354 TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio);
 355
 356 /*
 357  * Declarations related to response verification,
 358  * they are defined in ts/ts_resp_verify.c.
 359  */
 360
 361 int TS_RESP_verify_signature(PKCS7 *token, STACK_OF(X509) *certs,
 362                              X509_STORE *store, X509 **signer_out);
 363
 364 /* Context structure for the generic verify method. */
 365
 366 /* Verify the signer's certificate and the signature of the response. */
 367 # define TS_VFY_SIGNATURE        (1u << 0)
 368 /* Verify the version number of the response. */
 369 # define TS_VFY_VERSION          (1u << 1)
 370 /* Verify if the policy supplied by the user matches the policy of the TSA. */
 371 # define TS_VFY_POLICY           (1u << 2)
 372 /*
 373  * Verify the message imprint provided by the user. This flag should not be
 374  * specified with TS_VFY_DATA.
 375  */
 376 # define TS_VFY_IMPRINT          (1u << 3)
 377 /*
 378  * Verify the message imprint computed by the verify method from the user
 379  * provided data and the MD algorithm of the response. This flag should not
 380  * be specified with TS_VFY_IMPRINT.
 381  */
 382 # define TS_VFY_DATA             (1u << 4)
 383 /* Verify the nonce value. */
 384 # define TS_VFY_NONCE            (1u << 5)
 385 /* Verify if the TSA name field matches the signer certificate. */
 386 # define TS_VFY_SIGNER           (1u << 6)
 387 /* Verify if the TSA name field equals to the user provided name. */
 388 # define TS_VFY_TSA_NAME         (1u << 7)
 389
 390 /* You can use the following convenience constants. */
 391 # define TS_VFY_ALL_IMPRINT      (TS_VFY_SIGNATURE       \
 392                                  | TS_VFY_VERSION       \
 393                                  | TS_VFY_POLICY        \
 394                                  | TS_VFY_IMPRINT       \
 395                                  | TS_VFY_NONCE         \
 396                                  | TS_VFY_SIGNER        \
 397                                  | TS_VFY_TSA_NAME)
 398 # define TS_VFY_ALL_DATA         (TS_VFY_SIGNATURE       \
 399                                  | TS_VFY_VERSION       \
 400                                  | TS_VFY_POLICY        \
 401                                  | TS_VFY_DATA          \
 402                                  | TS_VFY_NONCE         \
 403                                  | TS_VFY_SIGNER        \
 404                                  | TS_VFY_TSA_NAME)
 405
 406 typedef struct TS_verify_ctx TS_VERIFY_CTX;
 407
 408 int TS_RESP_verify_response(TS_VERIFY_CTX *ctx, TS_RESP *response);
 409 int TS_RESP_verify_token(TS_VERIFY_CTX *ctx, PKCS7 *token);
 410
 411 /*
 412  * Declarations related to response verification context,
 413  */
 414 TS_VERIFY_CTX *TS_VERIFY_CTX_new(void);
 415 void TS_VERIFY_CTX_init(TS_VERIFY_CTX *ctx);
 416 void TS_VERIFY_CTX_free(TS_VERIFY_CTX *ctx);
 417 void TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX *ctx);
 418 int TS_VERIFY_CTX_set_flags(TS_VERIFY_CTX *ctx, int f);
 419 int TS_VERIFY_CTX_add_flags(TS_VERIFY_CTX *ctx, int f);
 420 BIO *TS_VERIFY_CTX_set_data(TS_VERIFY_CTX *ctx, BIO *b);
 421 unsigned char *TS_VERIFY_CTX_set_imprint(TS_VERIFY_CTX *ctx,
 422                                          unsigned char *hexstr, long len);
 423 X509_STORE *TS_VERIFY_CTX_set_store(TS_VERIFY_CTX *ctx, X509_STORE *s);
 424 # ifndef OPENSSL_NO_DEPRECATED_3_0
 425 #  define TS_VERIFY_CTS_set_certs(ctx, cert) TS_VERIFY_CTX_set_certs(ctx,cert)
 426 # endif
 427 STACK_OF(X509) *TS_VERIFY_CTX_set_certs(TS_VERIFY_CTX *ctx, STACK_OF(X509) *certs);
 428
 429 /*-
 430  * If ctx is NULL, it allocates and returns a new object, otherwise
 431  * it returns ctx. It initialises all the members as follows:
 432  * flags = TS_VFY_ALL_IMPRINT & ~(TS_VFY_TSA_NAME | TS_VFY_SIGNATURE)
 433  * certs = NULL
 434  * store = NULL
 435  * policy = policy from the request or NULL if absent (in this case
 436  *      TS_VFY_POLICY is cleared from flags as well)
 437  * md_alg = MD algorithm from request
 438  * imprint, imprint_len = imprint from request
 439  * data = NULL
 440  * nonce, nonce_len = nonce from the request or NULL if absent (in this case
 441  *      TS_VFY_NONCE is cleared from flags as well)
 442  * tsa_name = NULL
 443  * Important: after calling this method TS_VFY_SIGNATURE should be added!
 444  */
 445 TS_VERIFY_CTX *TS_REQ_to_TS_VERIFY_CTX(TS_REQ *req, TS_VERIFY_CTX *ctx);
 446
 447 /* Function declarations for TS_RESP defined in ts/ts_resp_print.c */
 448
 449 int TS_RESP_print_bio(BIO *bio, TS_RESP *a);
 450 int TS_STATUS_INFO_print_bio(BIO *bio, TS_STATUS_INFO *a);
 451 int TS_TST_INFO_print_bio(BIO *bio, TS_TST_INFO *a);
 452
 453 /* Common utility functions defined in ts/ts_lib.c */
 454
 455 int TS_ASN1_INTEGER_print_bio(BIO *bio, const ASN1_INTEGER *num);
 456 int TS_OBJ_print_bio(BIO *bio, const ASN1_OBJECT *obj);
 457 int TS_ext_print_bio(BIO *bio, const STACK_OF(X509_EXTENSION) *extensions);
 458 int TS_X509_ALGOR_print_bio(BIO *bio, const X509_ALGOR *alg);
 459 int TS_MSG_IMPRINT_print_bio(BIO *bio, TS_MSG_IMPRINT *msg);
 460
 461 /*
 462  * Function declarations for handling configuration options, defined in
 463  * ts/ts_conf.c
 464  */
 465
 466 X509 *TS_CONF_load_cert(const char *file);
 467 STACK_OF(X509) *TS_CONF_load_certs(const char *file);
 468 EVP_PKEY *TS_CONF_load_key(const char *file, const char *pass);
 469 const char *TS_CONF_get_tsa_section(CONF *conf, const char *section);
 470 int TS_CONF_set_serial(CONF *conf, const char *section, TS_serial_cb cb,
 471                        TS_RESP_CTX *ctx);
 472 #ifndef OPENSSL_NO_ENGINE
 473 int TS_CONF_set_crypto_device(CONF *conf, const char *section,
 474                               const char *device);
 475 int TS_CONF_set_default_engine(const char *name);
 476 #endif
 477 int TS_CONF_set_signer_cert(CONF *conf, const char *section,
 478                             const char *cert, TS_RESP_CTX *ctx);
 479 int TS_CONF_set_certs(CONF *conf, const char *section, const char *certs,
 480                       TS_RESP_CTX *ctx);
 481 int TS_CONF_set_signer_key(CONF *conf, const char *section,
 482                            const char *key, const char *pass,
 483                            TS_RESP_CTX *ctx);
 484 int TS_CONF_set_signer_digest(CONF *conf, const char *section,
 485                                const char *md, TS_RESP_CTX *ctx);
 486 int TS_CONF_set_def_policy(CONF *conf, const char *section,
 487                            const char *policy, TS_RESP_CTX *ctx);
 488 int TS_CONF_set_policies(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 489 int TS_CONF_set_digests(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 490 int TS_CONF_set_accuracy(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 491 int TS_CONF_set_clock_precision_digits(CONF *conf, const char *section,
 492                                        TS_RESP_CTX *ctx);
 493 int TS_CONF_set_ordering(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 494 int TS_CONF_set_tsa_name(CONF *conf, const char *section, TS_RESP_CTX *ctx);
 495 int TS_CONF_set_ess_cert_id_chain(CONF *conf, const char *section,
 496                                   TS_RESP_CTX *ctx);
 497 int TS_CONF_set_ess_cert_id_digest(CONF *conf, const char *section,
 498                                       TS_RESP_CTX *ctx);
 499
 500 #  ifdef  __cplusplus
 501 }
 502 #  endif
 503 # endif
 504 #endif