crypto/cmp/cmp_msg.c

   1 /*
   2  * Copyright 2007-2023 The OpenSSL Project Authors. All Rights Reserved.
   3  * Copyright Nokia 2007-2019
   4  * Copyright Siemens AG 2015-2019
   5  *
   6  * Licensed under the Apache License 2.0 (the "License").  You may not use
   7  * this file except in compliance with the License.  You can obtain a copy
   8  * in the file LICENSE in the source distribution or at
   9  * https://www.openssl.org/source/license.html
  10  */
  11
  12 /* CMP functions for PKIMessage construction */
  13
  14 #include "cmp_local.h"
  15
  16 /* explicit #includes not strictly needed since implied by the above: */
  17 #include <openssl/asn1t.h>
  18 #include <openssl/cmp.h>
  19 #include <openssl/crmf.h>
  20 #include <openssl/err.h>
  21 #include <openssl/x509.h>
  22
  23 OSSL_CMP_MSG *OSSL_CMP_MSG_new(OSSL_LIB_CTX *libctx, const char *propq)
  24 {
  25     OSSL_CMP_MSG *msg = NULL;
  26
  27     msg = (OSSL_CMP_MSG *)ASN1_item_new_ex(ASN1_ITEM_rptr(OSSL_CMP_MSG),
  28                                            libctx, propq);
  29     if (!ossl_cmp_msg_set0_libctx(msg, libctx, propq)) {
  30         OSSL_CMP_MSG_free(msg);
  31         msg = NULL;
  32     }
  33     return msg;
  34 }
  35
  36 void OSSL_CMP_MSG_free(OSSL_CMP_MSG *msg)
  37 {
  38     ASN1_item_free((ASN1_VALUE *)msg, ASN1_ITEM_rptr(OSSL_CMP_MSG));
  39 }
  40
  41 /*
  42  * This should only be used if the X509 object was embedded inside another
  43  * asn1 object and it needs a libctx to operate.
  44  * Use OSSL_CMP_MSG_new() instead if possible.
  45  */
  46 int ossl_cmp_msg_set0_libctx(OSSL_CMP_MSG *msg, OSSL_LIB_CTX *libctx,
  47                              const char *propq)
  48 {
  49     if (msg != NULL) {
  50         msg->libctx = libctx;
  51         OPENSSL_free(msg->propq);
  52         msg->propq = NULL;
  53         if (propq != NULL) {
  54             msg->propq = OPENSSL_strdup(propq);
  55             if (msg->propq == NULL)
  56                 return 0;
  57         }
  58     }
  59     return 1;
  60 }
  61
  62 OSSL_CMP_PKIHEADER *OSSL_CMP_MSG_get0_header(const OSSL_CMP_MSG *msg)
  63 {
  64     if (msg == NULL) {
  65         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
  66         return NULL;
  67     }
  68     return msg->header;
  69 }
  70
  71 const char *ossl_cmp_bodytype_to_string(int type)
  72 {
  73     static const char *type_names[] = {
  74         "IR", "IP", "CR", "CP", "P10CR",
  75         "POPDECC", "POPDECR", "KUR", "KUP",
  76         "KRR", "KRP", "RR", "RP", "CCR", "CCP",
  77         "CKUANN", "CANN", "RANN", "CRLANN", "PKICONF", "NESTED",
  78         "GENM", "GENP", "ERROR", "CERTCONF", "POLLREQ", "POLLREP",
  79     };
  80
  81     if (type < 0 || type > OSSL_CMP_PKIBODY_TYPE_MAX)
  82         return "illegal body type";
  83     return type_names[type];
  84 }
  85
  86 int ossl_cmp_msg_set_bodytype(OSSL_CMP_MSG *msg, int type)
  87 {
  88     if (!ossl_assert(msg != NULL && msg->body != NULL))
  89         return 0;
  90
  91     msg->body->type = type;
  92     return 1;
  93 }
  94
  95 int OSSL_CMP_MSG_get_bodytype(const OSSL_CMP_MSG *msg)
  96 {
  97     if (!ossl_assert(msg != NULL && msg->body != NULL))
  98         return -1;
  99
 100     return msg->body->type;
 101 }
 102
 103 X509_PUBKEY *OSSL_CMP_MSG_get0_certreq_publickey(const OSSL_CMP_MSG *msg)
 104 {
 105     const OSSL_CRMF_MSGS *reqs;
 106     const OSSL_CRMF_MSG *crm;
 107     const OSSL_CRMF_CERTTEMPLATE *tmpl;
 108     X509_PUBKEY *pubkey;
 109
 110     switch (OSSL_CMP_MSG_get_bodytype(msg)) {
 111     case OSSL_CMP_PKIBODY_IR:
 112     case OSSL_CMP_PKIBODY_CR:
 113     case OSSL_CMP_PKIBODY_KUR:
 114         reqs = msg->body->value.ir; /* value.ir is same for cr and kur */
 115         if ((crm = sk_OSSL_CRMF_MSG_value(reqs, 0)) == NULL) {
 116             ERR_raise(ERR_LIB_CMP, CMP_R_CERTREQMSG_NOT_FOUND);
 117             return NULL;
 118         }
 119         if ((tmpl = OSSL_CRMF_MSG_get0_tmpl(crm)) == NULL
 120             || (pubkey = OSSL_CRMF_CERTTEMPLATE_get0_publicKey(tmpl)) == NULL) {
 121             ERR_raise(ERR_LIB_CMP, CRMF_R_POPO_MISSING_PUBLIC_KEY);
 122             return NULL;
 123         }
 124         return pubkey;
 125     default:
 126         ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY);
 127         return NULL;
 128     }
 129 }
 130
 131 /* Add an extension to the referenced extension stack, which may be NULL */
 132 static int add1_extension(X509_EXTENSIONS **pexts, int nid, int crit, void *ex)
 133 {
 134     X509_EXTENSION *ext;
 135     int res;
 136
 137     if (!ossl_assert(pexts != NULL)) /* pointer to var must not be NULL */
 138         return 0;
 139
 140     if ((ext = X509V3_EXT_i2d(nid, crit, ex)) == NULL)
 141         return 0;
 142
 143     res = X509v3_add_ext(pexts, ext, 0) != NULL;
 144     X509_EXTENSION_free(ext);
 145     return res;
 146 }
 147
 148 /* Add extension list to the referenced extension stack, which may be NULL */
 149 static int add_extensions(STACK_OF(X509_EXTENSION) **target,
 150                           const STACK_OF(X509_EXTENSION) *exts)
 151 {
 152     int i;
 153
 154     if (target == NULL)
 155         return 0;
 156
 157     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
 158         X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
 159         ASN1_OBJECT *obj = X509_EXTENSION_get_object(ext);
 160         int idx = X509v3_get_ext_by_OBJ(*target, obj, -1);
 161
 162         /* Does extension exist in target? */
 163         if (idx != -1) {
 164             /* Delete all extensions of same type */
 165             do {
 166                 X509_EXTENSION_free(sk_X509_EXTENSION_delete(*target, idx));
 167                 idx = X509v3_get_ext_by_OBJ(*target, obj, -1);
 168             } while (idx != -1);
 169         }
 170         if (!X509v3_add_ext(target, ext, -1))
 171             return 0;
 172     }
 173     return 1;
 174 }
 175
 176 /* Add a CRL revocation reason code to extension stack, which may be NULL */
 177 static int add_crl_reason_extension(X509_EXTENSIONS **pexts, int reason_code)
 178 {
 179     ASN1_ENUMERATED *val = ASN1_ENUMERATED_new();
 180     int res = 0;
 181
 182     if (val != NULL && ASN1_ENUMERATED_set(val, reason_code))
 183         res = add1_extension(pexts, NID_crl_reason, 0 /* non-critical */, val);
 184     ASN1_ENUMERATED_free(val);
 185     return res;
 186 }
 187
 188 OSSL_CMP_MSG *ossl_cmp_msg_create(OSSL_CMP_CTX *ctx, int bodytype)
 189 {
 190     OSSL_CMP_MSG *msg = NULL;
 191
 192     if (!ossl_assert(ctx != NULL))
 193         return NULL;
 194
 195     if ((msg = OSSL_CMP_MSG_new(ctx->libctx, ctx->propq)) == NULL)
 196         return NULL;
 197     if (!ossl_cmp_hdr_init(ctx, msg->header)
 198             || !ossl_cmp_msg_set_bodytype(msg, bodytype))
 199         goto err;
 200     if (ctx->geninfo_ITAVs != NULL
 201             && !ossl_cmp_hdr_generalInfo_push1_items(msg->header,
 202                                                      ctx->geninfo_ITAVs))
 203         goto err;
 204
 205     switch (bodytype) {
 206     case OSSL_CMP_PKIBODY_IR:
 207     case OSSL_CMP_PKIBODY_CR:
 208     case OSSL_CMP_PKIBODY_KUR:
 209         if ((msg->body->value.ir = OSSL_CRMF_MSGS_new()) == NULL)
 210             goto err;
 211         return msg;
 212
 213     case OSSL_CMP_PKIBODY_P10CR:
 214         if (ctx->p10CSR == NULL) {
 215             ERR_raise(ERR_LIB_CMP, CMP_R_MISSING_P10CSR);
 216             goto err;
 217         }
 218         if ((msg->body->value.p10cr = X509_REQ_dup(ctx->p10CSR)) == NULL)
 219             goto err;
 220         return msg;
 221
 222     case OSSL_CMP_PKIBODY_IP:
 223     case OSSL_CMP_PKIBODY_CP:
 224     case OSSL_CMP_PKIBODY_KUP:
 225         if ((msg->body->value.ip = OSSL_CMP_CERTREPMESSAGE_new()) == NULL)
 226             goto err;
 227         return msg;
 228
 229     case OSSL_CMP_PKIBODY_RR:
 230         if ((msg->body->value.rr = sk_OSSL_CMP_REVDETAILS_new_null()) == NULL)
 231             goto err;
 232         return msg;
 233     case OSSL_CMP_PKIBODY_RP:
 234         if ((msg->body->value.rp = OSSL_CMP_REVREPCONTENT_new()) == NULL)
 235             goto err;
 236         return msg;
 237
 238     case OSSL_CMP_PKIBODY_CERTCONF:
 239         if ((msg->body->value.certConf =
 240              sk_OSSL_CMP_CERTSTATUS_new_null()) == NULL)
 241             goto err;
 242         return msg;
 243     case OSSL_CMP_PKIBODY_PKICONF:
 244         if ((msg->body->value.pkiconf = ASN1_TYPE_new()) == NULL)
 245             goto err;
 246         ASN1_TYPE_set(msg->body->value.pkiconf, V_ASN1_NULL, NULL);
 247         return msg;
 248
 249     case OSSL_CMP_PKIBODY_POLLREQ:
 250         if ((msg->body->value.pollReq = sk_OSSL_CMP_POLLREQ_new_null()) == NULL)
 251             goto err;
 252         return msg;
 253     case OSSL_CMP_PKIBODY_POLLREP:
 254         if ((msg->body->value.pollRep = sk_OSSL_CMP_POLLREP_new_null()) == NULL)
 255             goto err;
 256         return msg;
 257
 258     case OSSL_CMP_PKIBODY_GENM:
 259     case OSSL_CMP_PKIBODY_GENP:
 260         if ((msg->body->value.genm = sk_OSSL_CMP_ITAV_new_null()) == NULL)
 261             goto err;
 262         return msg;
 263
 264     case OSSL_CMP_PKIBODY_ERROR:
 265         if ((msg->body->value.error = OSSL_CMP_ERRORMSGCONTENT_new()) == NULL)
 266             goto err;
 267         return msg;
 268
 269     default:
 270         ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY);
 271         goto err;
 272     }
 273
 274  err:
 275     OSSL_CMP_MSG_free(msg);
 276     return NULL;
 277 }
 278
 279 #define HAS_SAN(ctx) \
 280     (sk_GENERAL_NAME_num((ctx)->subjectAltNames) > 0 \
 281          || OSSL_CMP_CTX_reqExtensions_have_SAN(ctx) == 1)
 282
 283 static const X509_NAME *determine_subj(OSSL_CMP_CTX *ctx, int for_KUR,
 284                                        const X509_NAME *ref_subj)
 285 {
 286     if (ctx->subjectName != NULL)
 287         return IS_NULL_DN(ctx->subjectName) ? NULL : ctx->subjectName;
 288     if (ctx->p10CSR != NULL) /* first default is from any given CSR */
 289         return X509_REQ_get_subject_name(ctx->p10CSR);
 290     if (for_KUR || !HAS_SAN(ctx))
 291         /*
 292          * For KUR, copy subject from any reference cert as fallback.
 293          * For IR or CR, do the same only if there is no subjectAltName.
 294          */
 295         return ref_subj;
 296     return NULL;
 297 }
 298
 299 OSSL_CRMF_MSG *OSSL_CMP_CTX_setup_CRM(OSSL_CMP_CTX *ctx, int for_KUR, int rid)
 300 {
 301     OSSL_CRMF_MSG *crm = NULL;
 302     X509 *refcert = ctx->oldCert != NULL ? ctx->oldCert : ctx->cert;
 303     /* refcert defaults to current client cert */
 304     EVP_PKEY *rkey = ossl_cmp_ctx_get0_newPubkey(ctx);
 305     STACK_OF(GENERAL_NAME) *default_sans = NULL;
 306     const X509_NAME *ref_subj =
 307         refcert != NULL ? X509_get_subject_name(refcert) : NULL;
 308     const X509_NAME *subject = determine_subj(ctx, for_KUR, ref_subj);
 309     const X509_NAME *issuer = ctx->issuer != NULL || refcert == NULL
 310         ? (IS_NULL_DN(ctx->issuer) ? NULL : ctx->issuer)
 311         : X509_get_issuer_name(refcert);
 312     int crit = ctx->setSubjectAltNameCritical || subject == NULL;
 313     /* RFC5280: subjectAltName MUST be critical if subject is null */
 314     X509_EXTENSIONS *exts = NULL;
 315
 316     if (rkey == NULL) {
 317 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 318         ERR_raise(ERR_LIB_CMP, CMP_R_MISSING_PUBLIC_KEY);
 319         return NULL;
 320 #endif
 321     }
 322     if (for_KUR && refcert == NULL && ctx->p10CSR == NULL) {
 323         ERR_raise(ERR_LIB_CMP, CMP_R_MISSING_REFERENCE_CERT);
 324         return NULL;
 325     }
 326     if ((crm = OSSL_CRMF_MSG_new()) == NULL)
 327         return NULL;
 328     if (!OSSL_CRMF_MSG_set_certReqId(crm, rid)
 329             /*
 330              * fill certTemplate, corresponding to CertificationRequestInfo
 331              * of PKCS#10. The rkey param cannot be NULL so far -
 332              * it could be NULL if centralized key creation was supported
 333              */
 334             || !OSSL_CRMF_CERTTEMPLATE_fill(OSSL_CRMF_MSG_get0_tmpl(crm), rkey,
 335                                             subject, issuer, NULL /* serial */))
 336         goto err;
 337     if (ctx->days != 0) {
 338         time_t now = time(NULL);
 339         ASN1_TIME *notBefore = ASN1_TIME_adj(NULL, now, 0, 0);
 340         ASN1_TIME *notAfter = ASN1_TIME_adj(NULL, now, ctx->days, 0);
 341
 342         if (notBefore == NULL
 343                 || notAfter == NULL
 344                 || !OSSL_CRMF_MSG_set0_validity(crm, notBefore, notAfter)) {
 345             ASN1_TIME_free(notBefore);
 346             ASN1_TIME_free(notAfter);
 347             goto err;
 348         }
 349     }
 350
 351     /* extensions */
 352     if (ctx->p10CSR != NULL
 353             && (exts = X509_REQ_get_extensions(ctx->p10CSR)) == NULL)
 354         goto err;
 355     if (!ctx->SubjectAltName_nodefault && !HAS_SAN(ctx) && refcert != NULL
 356         && (default_sans = X509V3_get_d2i(X509_get0_extensions(refcert),
 357                                           NID_subject_alt_name, NULL, NULL))
 358         != NULL
 359             && !add1_extension(&exts, NID_subject_alt_name, crit, default_sans))
 360         goto err;
 361     if (ctx->reqExtensions != NULL /* augment/override existing ones */
 362             && !add_extensions(&exts, ctx->reqExtensions))
 363         goto err;
 364     if (sk_GENERAL_NAME_num(ctx->subjectAltNames) > 0
 365             && !add1_extension(&exts, NID_subject_alt_name,
 366                                crit, ctx->subjectAltNames))
 367         goto err;
 368     if (ctx->policies != NULL
 369             && !add1_extension(&exts, NID_certificate_policies,
 370                                ctx->setPoliciesCritical, ctx->policies))
 371         goto err;
 372     if (!OSSL_CRMF_MSG_set0_extensions(crm, exts))
 373         goto err;
 374     exts = NULL;
 375     /* end fill certTemplate, now set any controls */
 376
 377     /* for KUR, set OldCertId according to D.6 */
 378     if (for_KUR && refcert != NULL) {
 379         OSSL_CRMF_CERTID *cid =
 380             OSSL_CRMF_CERTID_gen(X509_get_issuer_name(refcert),
 381                                  X509_get0_serialNumber(refcert));
 382         int ret;
 383
 384         if (cid == NULL)
 385             goto err;
 386         ret = OSSL_CRMF_MSG_set1_regCtrl_oldCertID(crm, cid);
 387         OSSL_CRMF_CERTID_free(cid);
 388         if (ret == 0)
 389             goto err;
 390     }
 391
 392     goto end;
 393
 394  err:
 395     OSSL_CRMF_MSG_free(crm);
 396     crm = NULL;
 397
 398  end:
 399     sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
 400     sk_GENERAL_NAME_pop_free(default_sans, GENERAL_NAME_free);
 401     return crm;
 402 }
 403
 404 OSSL_CMP_MSG *ossl_cmp_certreq_new(OSSL_CMP_CTX *ctx, int type,
 405                                    const OSSL_CRMF_MSG *crm)
 406 {
 407     OSSL_CMP_MSG *msg;
 408     OSSL_CRMF_MSG *local_crm = NULL;
 409
 410     if (!ossl_assert(ctx != NULL))
 411         return NULL;
 412
 413     if (type != OSSL_CMP_PKIBODY_IR && type != OSSL_CMP_PKIBODY_CR
 414             && type != OSSL_CMP_PKIBODY_KUR && type != OSSL_CMP_PKIBODY_P10CR) {
 415         ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS);
 416         return NULL;
 417     }
 418     if (type == OSSL_CMP_PKIBODY_P10CR && crm != NULL) {
 419         ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS);
 420         return NULL;
 421     }
 422
 423     if ((msg = ossl_cmp_msg_create(ctx, type)) == NULL)
 424         goto err;
 425
 426     /* header */
 427     if (ctx->implicitConfirm && !ossl_cmp_hdr_set_implicitConfirm(msg->header))
 428         goto err;
 429
 430     /* body */
 431     /* For P10CR the content has already been set in OSSL_CMP_MSG_create */
 432     if (type != OSSL_CMP_PKIBODY_P10CR) {
 433         EVP_PKEY *privkey = OSSL_CMP_CTX_get0_newPkey(ctx, 1);
 434
 435         /* privkey is ctx->newPkey (if private, else NULL) or ctx->pkey */
 436         if (ctx->popoMethod >= OSSL_CRMF_POPO_SIGNATURE && privkey == NULL) {
 437             ERR_raise(ERR_LIB_CMP, CMP_R_MISSING_PRIVATE_KEY_FOR_POPO);
 438             goto err;
 439         }
 440         if (crm == NULL) {
 441             local_crm = OSSL_CMP_CTX_setup_CRM(ctx,
 442                                                type == OSSL_CMP_PKIBODY_KUR,
 443                                                OSSL_CMP_CERTREQID);
 444             if (local_crm == NULL
 445                 || !OSSL_CRMF_MSG_create_popo(ctx->popoMethod, local_crm,
 446                                               privkey, ctx->digest,
 447                                               ctx->libctx, ctx->propq))
 448                 goto err;
 449         } else {
 450             if ((local_crm = OSSL_CRMF_MSG_dup(crm)) == NULL)
 451                 goto err;
 452         }
 453
 454         /* value.ir is same for cr and kur */
 455         if (!sk_OSSL_CRMF_MSG_push(msg->body->value.ir, local_crm))
 456             goto err;
 457         local_crm = NULL;
 458     }
 459
 460     if (!ossl_cmp_msg_protect(ctx, msg))
 461         goto err;
 462
 463     return msg;
 464
 465  err:
 466     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTREQ);
 467     OSSL_CRMF_MSG_free(local_crm);
 468     OSSL_CMP_MSG_free(msg);
 469     return NULL;
 470 }
 471
 472 OSSL_CMP_MSG *ossl_cmp_certrep_new(OSSL_CMP_CTX *ctx, int bodytype,
 473                                    int certReqId, const OSSL_CMP_PKISI *si,
 474                                    X509 *cert, const X509 *encryption_recip,
 475                                    STACK_OF(X509) *chain, STACK_OF(X509) *caPubs,
 476                                    int unprotectedErrors)
 477 {
 478     OSSL_CMP_MSG *msg = NULL;
 479     OSSL_CMP_CERTREPMESSAGE *repMsg = NULL;
 480     OSSL_CMP_CERTRESPONSE *resp = NULL;
 481     int status = OSSL_CMP_PKISTATUS_unspecified;
 482
 483     if (!ossl_assert(ctx != NULL && si != NULL))
 484         return NULL;
 485
 486     if ((msg = ossl_cmp_msg_create(ctx, bodytype)) == NULL)
 487         goto err;
 488     repMsg = msg->body->value.ip; /* value.ip is same for cp and kup */
 489
 490     /* header */
 491     if (ctx->implicitConfirm && !ossl_cmp_hdr_set_implicitConfirm(msg->header))
 492         goto err;
 493
 494     /* body */
 495     if ((resp = OSSL_CMP_CERTRESPONSE_new()) == NULL)
 496         goto err;
 497     OSSL_CMP_PKISI_free(resp->status);
 498     if ((resp->status = OSSL_CMP_PKISI_dup(si)) == NULL
 499             || !ASN1_INTEGER_set(resp->certReqId, certReqId))
 500         goto err;
 501
 502     status = ossl_cmp_pkisi_get_status(resp->status);
 503     if (status != OSSL_CMP_PKISTATUS_rejection
 504             && status != OSSL_CMP_PKISTATUS_waiting && cert != NULL) {
 505         if (encryption_recip != NULL) {
 506             ERR_raise(ERR_LIB_CMP, ERR_R_UNSUPPORTED);
 507             goto err;
 508         }
 509
 510         if ((resp->certifiedKeyPair = OSSL_CMP_CERTIFIEDKEYPAIR_new())
 511             == NULL)
 512             goto err;
 513         resp->certifiedKeyPair->certOrEncCert->type =
 514             OSSL_CMP_CERTORENCCERT_CERTIFICATE;
 515         if (!X509_up_ref(cert))
 516             goto err;
 517         resp->certifiedKeyPair->certOrEncCert->value.certificate = cert;
 518     }
 519
 520     if (!sk_OSSL_CMP_CERTRESPONSE_push(repMsg->response, resp))
 521         goto err;
 522     resp = NULL;
 523
 524     if (bodytype == OSSL_CMP_PKIBODY_IP && caPubs != NULL
 525             && (repMsg->caPubs = X509_chain_up_ref(caPubs)) == NULL)
 526         goto err;
 527     if (sk_X509_num(chain) > 0
 528         && !ossl_x509_add_certs_new(&msg->extraCerts, chain,
 529                                     X509_ADD_FLAG_UP_REF | X509_ADD_FLAG_NO_DUP))
 530         goto err;
 531
 532     if (!unprotectedErrors
 533             || ossl_cmp_pkisi_get_status(si) != OSSL_CMP_PKISTATUS_rejection)
 534         if (!ossl_cmp_msg_protect(ctx, msg))
 535             goto err;
 536
 537     return msg;
 538
 539  err:
 540     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTREP);
 541     OSSL_CMP_CERTRESPONSE_free(resp);
 542     OSSL_CMP_MSG_free(msg);
 543     return NULL;
 544 }
 545
 546 OSSL_CMP_MSG *ossl_cmp_rr_new(OSSL_CMP_CTX *ctx)
 547 {
 548     OSSL_CMP_MSG *msg = NULL;
 549     const X509_NAME *issuer = NULL;
 550     const X509_NAME *subject = NULL;
 551     const ASN1_INTEGER *serialNumber = NULL;
 552     EVP_PKEY *pubkey = NULL;
 553     OSSL_CMP_REVDETAILS *rd;
 554     int ret;
 555
 556     if (!ossl_assert(ctx != NULL
 557                      && (ctx->oldCert != NULL || ctx->p10CSR != NULL
 558                          || (ctx->serialNumber != NULL && ctx->issuer != NULL))))
 559         return NULL;
 560
 561     if ((rd = OSSL_CMP_REVDETAILS_new()) == NULL)
 562         goto err;
 563
 564     if (ctx->serialNumber != NULL && ctx->issuer != NULL) {
 565         issuer = ctx->issuer;
 566         serialNumber = ctx->serialNumber;
 567     } else if (ctx->oldCert != NULL) {
 568         issuer = X509_get_issuer_name(ctx->oldCert);
 569         serialNumber = X509_get0_serialNumber(ctx->oldCert);
 570     } else if (ctx->p10CSR != NULL) {
 571         pubkey = X509_REQ_get0_pubkey(ctx->p10CSR);
 572         subject = X509_REQ_get_subject_name(ctx->p10CSR);
 573     } else {
 574         goto err;
 575     }
 576
 577     /* Fill the template from the contents of the certificate to be revoked */
 578     ret = OSSL_CRMF_CERTTEMPLATE_fill(rd->certDetails, pubkey, subject,
 579                                       issuer, serialNumber);
 580     if (!ret)
 581         goto err;
 582
 583     /* revocation reason code is optional */
 584     if (ctx->revocationReason != CRL_REASON_NONE
 585             && !add_crl_reason_extension(&rd->crlEntryDetails,
 586                                          ctx->revocationReason))
 587         goto err;
 588
 589     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_RR)) == NULL)
 590         goto err;
 591
 592     if (!sk_OSSL_CMP_REVDETAILS_push(msg->body->value.rr, rd))
 593         goto err;
 594     rd = NULL;
 595     /* Revocation Passphrase according to section 5.3.19.9 could be set here */
 596
 597     if (!ossl_cmp_msg_protect(ctx, msg))
 598         goto err;
 599
 600     return msg;
 601
 602  err:
 603     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_RR);
 604     OSSL_CMP_MSG_free(msg);
 605     OSSL_CMP_REVDETAILS_free(rd);
 606     return NULL;
 607 }
 608
 609 OSSL_CMP_MSG *ossl_cmp_rp_new(OSSL_CMP_CTX *ctx, const OSSL_CMP_PKISI *si,
 610                               const OSSL_CRMF_CERTID *cid, int unprotectedErrors)
 611 {
 612     OSSL_CMP_REVREPCONTENT *rep = NULL;
 613     OSSL_CMP_PKISI *si1 = NULL;
 614     OSSL_CRMF_CERTID *cid_copy = NULL;
 615     OSSL_CMP_MSG *msg = NULL;
 616
 617     if (!ossl_assert(ctx != NULL && si != NULL))
 618         return NULL;
 619
 620     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_RP)) == NULL)
 621         goto err;
 622     rep = msg->body->value.rp;
 623
 624     if ((si1 = OSSL_CMP_PKISI_dup(si)) == NULL)
 625         goto err;
 626
 627     if (!sk_OSSL_CMP_PKISI_push(rep->status, si1)) {
 628         OSSL_CMP_PKISI_free(si1);
 629         goto err;
 630     }
 631
 632     if ((rep->revCerts = sk_OSSL_CRMF_CERTID_new_null()) == NULL)
 633         goto err;
 634     if (cid != NULL) {
 635         if ((cid_copy = OSSL_CRMF_CERTID_dup(cid)) == NULL)
 636             goto err;
 637         if (!sk_OSSL_CRMF_CERTID_push(rep->revCerts, cid_copy)) {
 638             OSSL_CRMF_CERTID_free(cid_copy);
 639             goto err;
 640         }
 641     }
 642
 643     if (!unprotectedErrors
 644             || ossl_cmp_pkisi_get_status(si) != OSSL_CMP_PKISTATUS_rejection)
 645         if (!ossl_cmp_msg_protect(ctx, msg))
 646             goto err;
 647
 648     return msg;
 649
 650  err:
 651     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_RP);
 652     OSSL_CMP_MSG_free(msg);
 653     return NULL;
 654 }
 655
 656 OSSL_CMP_MSG *ossl_cmp_pkiconf_new(OSSL_CMP_CTX *ctx)
 657 {
 658     OSSL_CMP_MSG *msg;
 659
 660     if (!ossl_assert(ctx != NULL))
 661         return NULL;
 662
 663     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_PKICONF)) == NULL)
 664         goto err;
 665     if (ossl_cmp_msg_protect(ctx, msg))
 666         return msg;
 667
 668  err:
 669     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_PKICONF);
 670     OSSL_CMP_MSG_free(msg);
 671     return NULL;
 672 }
 673
 674 int ossl_cmp_msg_gen_push0_ITAV(OSSL_CMP_MSG *msg, OSSL_CMP_ITAV *itav)
 675 {
 676     int bodytype;
 677
 678     if (!ossl_assert(msg != NULL && itav != NULL))
 679         return 0;
 680
 681     bodytype = OSSL_CMP_MSG_get_bodytype(msg);
 682     if (bodytype != OSSL_CMP_PKIBODY_GENM
 683             && bodytype != OSSL_CMP_PKIBODY_GENP) {
 684         ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS);
 685         return 0;
 686     }
 687
 688     /* value.genp has the same structure, so this works for genp as well */
 689     return OSSL_CMP_ITAV_push0_stack_item(&msg->body->value.genm, itav);
 690 }
 691
 692 int ossl_cmp_msg_gen_push1_ITAVs(OSSL_CMP_MSG *msg,
 693                                  const STACK_OF(OSSL_CMP_ITAV) *itavs)
 694 {
 695     int i;
 696     OSSL_CMP_ITAV *itav = NULL;
 697
 698     if (!ossl_assert(msg != NULL))
 699         return 0;
 700
 701     for (i = 0; i < sk_OSSL_CMP_ITAV_num(itavs); i++) {
 702         itav = OSSL_CMP_ITAV_dup(sk_OSSL_CMP_ITAV_value(itavs, i));
 703         if (itav == NULL
 704                 || !ossl_cmp_msg_gen_push0_ITAV(msg, itav)) {
 705             OSSL_CMP_ITAV_free(itav);
 706             return 0;
 707         }
 708     }
 709     return 1;
 710 }
 711
 712 /*
 713  * Creates a new General Message/Response with a copy of the given itav stack
 714  * returns a pointer to the PKIMessage on success, NULL on error
 715  */
 716 static OSSL_CMP_MSG *gen_new(OSSL_CMP_CTX *ctx,
 717                              const STACK_OF(OSSL_CMP_ITAV) *itavs,
 718                              int body_type, int err_code)
 719 {
 720     OSSL_CMP_MSG *msg = NULL;
 721
 722     if (!ossl_assert(ctx != NULL))
 723         return NULL;
 724
 725     if ((msg = ossl_cmp_msg_create(ctx, body_type)) == NULL)
 726         return NULL;
 727
 728     if (itavs != NULL && !ossl_cmp_msg_gen_push1_ITAVs(msg, itavs))
 729         goto err;
 730
 731     if (!ossl_cmp_msg_protect(ctx, msg))
 732         goto err;
 733
 734     return msg;
 735
 736  err:
 737     ERR_raise(ERR_LIB_CMP, err_code);
 738     OSSL_CMP_MSG_free(msg);
 739     return NULL;
 740 }
 741
 742 OSSL_CMP_MSG *ossl_cmp_genm_new(OSSL_CMP_CTX *ctx)
 743 {
 744     return gen_new(ctx, ctx->genm_ITAVs,
 745                    OSSL_CMP_PKIBODY_GENM, CMP_R_ERROR_CREATING_GENM);
 746 }
 747
 748 OSSL_CMP_MSG *ossl_cmp_genp_new(OSSL_CMP_CTX *ctx,
 749                                 const STACK_OF(OSSL_CMP_ITAV) *itavs)
 750 {
 751     return gen_new(ctx, itavs,
 752                    OSSL_CMP_PKIBODY_GENP, CMP_R_ERROR_CREATING_GENP);
 753 }
 754
 755 OSSL_CMP_MSG *ossl_cmp_error_new(OSSL_CMP_CTX *ctx, const OSSL_CMP_PKISI *si,
 756                                  int64_t errorCode, const char *details,
 757                                  int unprotected)
 758 {
 759     OSSL_CMP_MSG *msg = NULL;
 760     const char *lib = NULL, *reason = NULL;
 761     OSSL_CMP_PKIFREETEXT *ft;
 762
 763     if (!ossl_assert(ctx != NULL && si != NULL))
 764         return NULL;
 765
 766     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_ERROR)) == NULL)
 767         goto err;
 768
 769     OSSL_CMP_PKISI_free(msg->body->value.error->pKIStatusInfo);
 770     if ((msg->body->value.error->pKIStatusInfo = OSSL_CMP_PKISI_dup(si))
 771         == NULL)
 772         goto err;
 773     if ((msg->body->value.error->errorCode = ASN1_INTEGER_new()) == NULL)
 774         goto err;
 775     if (!ASN1_INTEGER_set_int64(msg->body->value.error->errorCode, errorCode))
 776         goto err;
 777     if (errorCode > 0
 778             && (uint64_t)errorCode < ((uint64_t)ERR_SYSTEM_FLAG << 1)) {
 779         lib = ERR_lib_error_string((unsigned long)errorCode);
 780         reason = ERR_reason_error_string((unsigned long)errorCode);
 781     }
 782     if (lib != NULL || reason != NULL || details != NULL) {
 783         if ((ft = sk_ASN1_UTF8STRING_new_null()) == NULL)
 784             goto err;
 785         msg->body->value.error->errorDetails = ft;
 786         if (lib != NULL && *lib != '\0'
 787                 && !ossl_cmp_sk_ASN1_UTF8STRING_push_str(ft, lib, -1))
 788             goto err;
 789         if (reason != NULL && *reason != '\0'
 790                 && !ossl_cmp_sk_ASN1_UTF8STRING_push_str(ft, reason, -1))
 791             goto err;
 792         if (details != NULL
 793                 && !ossl_cmp_sk_ASN1_UTF8STRING_push_str(ft, details, -1))
 794             goto err;
 795     }
 796
 797     if (!unprotected && !ossl_cmp_msg_protect(ctx, msg))
 798         goto err;
 799     return msg;
 800
 801  err:
 802     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_ERROR);
 803     OSSL_CMP_MSG_free(msg);
 804     return NULL;
 805 }
 806
 807 /*
 808  * Set the certHash field of a OSSL_CMP_CERTSTATUS structure.
 809  * This is used in the certConf message, for example,
 810  * to confirm that the certificate was received successfully.
 811  */
 812 int ossl_cmp_certstatus_set0_certHash(OSSL_CMP_CERTSTATUS *certStatus,
 813                                       ASN1_OCTET_STRING *hash)
 814 {
 815     if (!ossl_assert(certStatus != NULL))
 816         return 0;
 817     ASN1_OCTET_STRING_free(certStatus->certHash);
 818     certStatus->certHash = hash;
 819     return 1;
 820 }
 821
 822 OSSL_CMP_MSG *ossl_cmp_certConf_new(OSSL_CMP_CTX *ctx, int certReqId,
 823                                     int fail_info, const char *text)
 824 {
 825     OSSL_CMP_MSG *msg = NULL;
 826     OSSL_CMP_CERTSTATUS *certStatus = NULL;
 827     EVP_MD *md;
 828     int is_fallback;
 829     ASN1_OCTET_STRING *certHash = NULL;
 830     OSSL_CMP_PKISI *sinfo;
 831
 832     if (!ossl_assert(ctx != NULL && ctx->newCert != NULL
 833                      && (certReqId == OSSL_CMP_CERTREQID
 834                          || certReqId == OSSL_CMP_CERTREQID_NONE)))
 835         return NULL;
 836
 837     if ((unsigned)fail_info > OSSL_CMP_PKIFAILUREINFO_MAX_BIT_PATTERN) {
 838         ERR_raise(ERR_LIB_CMP, CMP_R_FAIL_INFO_OUT_OF_RANGE);
 839         return NULL;
 840     }
 841
 842     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_CERTCONF)) == NULL)
 843         goto err;
 844
 845     if ((certStatus = OSSL_CMP_CERTSTATUS_new()) == NULL)
 846         goto err;
 847     /* consume certStatus into msg right away so it gets deallocated with msg */
 848     if (sk_OSSL_CMP_CERTSTATUS_push(msg->body->value.certConf, certStatus) < 1) {
 849         OSSL_CMP_CERTSTATUS_free(certStatus);
 850         goto err;
 851     }
 852
 853     /* set the ID of the certReq */
 854     if (!ASN1_INTEGER_set(certStatus->certReqId, certReqId))
 855         goto err;
 856
 857     certStatus->hashAlg = NULL;
 858     /*
 859      * The hash of the certificate, using the same hash algorithm
 860      * as is used to create and verify the certificate signature.
 861      * If not available, a fallback hash algorithm is used.
 862      */
 863     if ((certHash = X509_digest_sig(ctx->newCert, &md, &is_fallback)) == NULL)
 864         goto err;
 865     if (is_fallback) {
 866         if (!ossl_cmp_hdr_set_pvno(msg->header, OSSL_CMP_PVNO_3))
 867             goto err;
 868         if ((certStatus->hashAlg = X509_ALGOR_new()) == NULL)
 869             goto err;
 870         X509_ALGOR_set_md(certStatus->hashAlg, md);
 871     }
 872     EVP_MD_free(md);
 873
 874     if (!ossl_cmp_certstatus_set0_certHash(certStatus, certHash))
 875         goto err;
 876     certHash = NULL;
 877     /*
 878      * For any particular CertStatus, omission of the statusInfo field
 879      * indicates ACCEPTANCE of the specified certificate.  Alternatively,
 880      * explicit status details (with respect to acceptance or rejection) MAY
 881      * be provided in the statusInfo field, perhaps for auditing purposes at
 882      * the CA/RA.
 883      */
 884     sinfo = fail_info != 0 ?
 885         OSSL_CMP_STATUSINFO_new(OSSL_CMP_PKISTATUS_rejection, fail_info, text) :
 886         OSSL_CMP_STATUSINFO_new(OSSL_CMP_PKISTATUS_accepted, 0, text);
 887     if (sinfo == NULL)
 888         goto err;
 889     certStatus->statusInfo = sinfo;
 890
 891     if (!ossl_cmp_msg_protect(ctx, msg))
 892         goto err;
 893
 894     return msg;
 895
 896  err:
 897     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTCONF);
 898     OSSL_CMP_MSG_free(msg);
 899     ASN1_OCTET_STRING_free(certHash);
 900     return NULL;
 901 }
 902
 903 OSSL_CMP_MSG *ossl_cmp_pollReq_new(OSSL_CMP_CTX *ctx, int crid)
 904 {
 905     OSSL_CMP_MSG *msg = NULL;
 906     OSSL_CMP_POLLREQ *preq = NULL;
 907
 908     if (!ossl_assert(ctx != NULL))
 909         return NULL;
 910
 911     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_POLLREQ)) == NULL)
 912         goto err;
 913
 914     if ((preq = OSSL_CMP_POLLREQ_new()) == NULL
 915             || !ASN1_INTEGER_set(preq->certReqId, crid)
 916             || !sk_OSSL_CMP_POLLREQ_push(msg->body->value.pollReq, preq))
 917         goto err;
 918
 919     preq = NULL;
 920     if (!ossl_cmp_msg_protect(ctx, msg))
 921         goto err;
 922
 923     return msg;
 924
 925  err:
 926     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_POLLREQ);
 927     OSSL_CMP_POLLREQ_free(preq);
 928     OSSL_CMP_MSG_free(msg);
 929     return NULL;
 930 }
 931
 932 OSSL_CMP_MSG *ossl_cmp_pollRep_new(OSSL_CMP_CTX *ctx, int crid,
 933                                    int64_t poll_after)
 934 {
 935     OSSL_CMP_MSG *msg;
 936     OSSL_CMP_POLLREP *prep;
 937
 938     if (!ossl_assert(ctx != NULL))
 939         return NULL;
 940
 941     if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_POLLREP)) == NULL)
 942         goto err;
 943     if ((prep = OSSL_CMP_POLLREP_new()) == NULL)
 944         goto err;
 945     if (!sk_OSSL_CMP_POLLREP_push(msg->body->value.pollRep, prep))
 946         goto err;
 947     if (!ASN1_INTEGER_set(prep->certReqId, crid))
 948         goto err;
 949     if (!ASN1_INTEGER_set_int64(prep->checkAfter, poll_after))
 950         goto err;
 951
 952     if (!ossl_cmp_msg_protect(ctx, msg))
 953         goto err;
 954     return msg;
 955
 956  err:
 957     ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_POLLREP);
 958     OSSL_CMP_MSG_free(msg);
 959     return NULL;
 960 }
 961
 962 /*-
 963  * returns the status field of the RevRepContent with the given
 964  * request/sequence id inside a revocation response.
 965  * RevRepContent has the revocation statuses in same order as they were sent in
 966  * RevReqContent.
 967  * returns NULL on error
 968  */
 969 OSSL_CMP_PKISI *
 970 ossl_cmp_revrepcontent_get_pkisi(OSSL_CMP_REVREPCONTENT *rrep, int rsid)
 971 {
 972     OSSL_CMP_PKISI *status;
 973
 974     if (!ossl_assert(rrep != NULL))
 975         return NULL;
 976
 977     if ((status = sk_OSSL_CMP_PKISI_value(rrep->status, rsid)) != NULL)
 978         return status;
 979
 980     ERR_raise(ERR_LIB_CMP, CMP_R_PKISTATUSINFO_NOT_FOUND);
 981     return NULL;
 982 }
 983
 984 /*
 985  * returns the CertId field in the revCerts part of the RevRepContent
 986  * with the given request/sequence id inside a revocation response.
 987  * RevRepContent has the CertIds in same order as they were sent in
 988  * RevReqContent.
 989  * returns NULL on error
 990  */
 991 OSSL_CRMF_CERTID *
 992 ossl_cmp_revrepcontent_get_CertId(OSSL_CMP_REVREPCONTENT *rrep, int rsid)
 993 {
 994     OSSL_CRMF_CERTID *cid = NULL;
 995
 996     if (!ossl_assert(rrep != NULL))
 997         return NULL;
 998
 999     if ((cid = sk_OSSL_CRMF_CERTID_value(rrep->revCerts, rsid)) != NULL)
1000         return cid;
1001
1002     ERR_raise(ERR_LIB_CMP, CMP_R_CERTID_NOT_FOUND);
1003     return NULL;
1004 }
1005
1006 static int suitable_rid(const ASN1_INTEGER *certReqId, int rid)
1007 {
1008     int trid;
1009
1010     if (rid == OSSL_CMP_CERTREQID_NONE)
1011         return 1;
1012
1013     trid = ossl_cmp_asn1_get_int(certReqId);
1014     if (trid <= OSSL_CMP_CERTREQID_INVALID) {
1015         ERR_raise(ERR_LIB_CMP, CMP_R_BAD_REQUEST_ID);
1016         return 0;
1017     }
1018     return rid == trid;
1019 }
1020
1021 /*
1022  * returns a pointer to the PollResponse with the given CertReqId
1023  * (or the first one in case -1) inside a PollRepContent
1024  * returns NULL on error or if no suitable PollResponse available
1025  */
1026 OSSL_CMP_POLLREP *
1027 ossl_cmp_pollrepcontent_get0_pollrep(const OSSL_CMP_POLLREPCONTENT *prc,
1028                                      int rid)
1029 {
1030     OSSL_CMP_POLLREP *pollRep = NULL;
1031     int i;
1032
1033     if (!ossl_assert(prc != NULL))
1034         return NULL;
1035
1036     for (i = 0; i < sk_OSSL_CMP_POLLREP_num(prc); i++) {
1037         pollRep = sk_OSSL_CMP_POLLREP_value(prc, i);
1038         if (suitable_rid(pollRep->certReqId, rid))
1039             return pollRep;
1040     }
1041
1042     ERR_raise_data(ERR_LIB_CMP, CMP_R_CERTRESPONSE_NOT_FOUND,
1043                    "expected certReqId = %d", rid);
1044     return NULL;
1045 }
1046
1047 /*
1048  * returns a pointer to the CertResponse with the given CertReqId
1049  * (or the first one in case -1) inside a CertRepMessage
1050  * returns NULL on error or if no suitable CertResponse available
1051  */
1052 OSSL_CMP_CERTRESPONSE *
1053 ossl_cmp_certrepmessage_get0_certresponse(const OSSL_CMP_CERTREPMESSAGE *crm,
1054                                           int rid)
1055 {
1056     OSSL_CMP_CERTRESPONSE *crep = NULL;
1057     int i;
1058
1059     if (!ossl_assert(crm != NULL && crm->response != NULL))
1060         return NULL;
1061
1062     for (i = 0; i < sk_OSSL_CMP_CERTRESPONSE_num(crm->response); i++) {
1063         crep = sk_OSSL_CMP_CERTRESPONSE_value(crm->response, i);
1064         if (suitable_rid(crep->certReqId, rid))
1065             return crep;
1066     }
1067
1068     ERR_raise_data(ERR_LIB_CMP, CMP_R_CERTRESPONSE_NOT_FOUND,
1069                    "expected certReqId = %d", rid);
1070     return NULL;
1071 }
1072
1073 /*-
1074  * Retrieve the newly enrolled certificate from the given certResponse crep.
1075  * Uses libctx and propq from ctx, in case of indirect POPO also private key.
1076  * Returns a pointer to a copy of the found certificate, or NULL if not found.
1077  */
1078 X509 *ossl_cmp_certresponse_get1_cert(const OSSL_CMP_CTX *ctx,
1079                                       const OSSL_CMP_CERTRESPONSE *crep)
1080 {
1081     OSSL_CMP_CERTORENCCERT *coec;
1082     X509 *crt = NULL;
1083     EVP_PKEY *pkey;
1084
1085     if (!ossl_assert(crep != NULL && ctx != NULL))
1086         return NULL;
1087
1088     if (crep->certifiedKeyPair
1089             && (coec = crep->certifiedKeyPair->certOrEncCert) != NULL) {
1090         switch (coec->type) {
1091         case OSSL_CMP_CERTORENCCERT_CERTIFICATE:
1092             crt = X509_dup(coec->value.certificate);
1093             break;
1094         case OSSL_CMP_CERTORENCCERT_ENCRYPTEDCERT:
1095             /* cert encrypted for indirect PoP; RFC 4210, 5.2.8.2 */
1096             pkey = OSSL_CMP_CTX_get0_newPkey(ctx, 1);
1097             /* pkey is ctx->newPkey (if private, else NULL) or ctx->pkey */
1098             if (pkey == NULL) {
1099                 ERR_raise(ERR_LIB_CMP, CMP_R_MISSING_PRIVATE_KEY);
1100                 return NULL;
1101             }
1102             crt =
1103                 OSSL_CRMF_ENCRYPTEDVALUE_get1_encCert(coec->value.encryptedCert,
1104                                                       ctx->libctx, ctx->propq,
1105                                                       pkey);
1106             break;
1107         default:
1108             ERR_raise(ERR_LIB_CMP, CMP_R_UNKNOWN_CERT_TYPE);
1109             return NULL;
1110         }
1111     }
1112     if (crt == NULL)
1113         ERR_raise(ERR_LIB_CMP, CMP_R_CERTIFICATE_NOT_FOUND);
1114     else
1115         (void)ossl_x509_set0_libctx(crt, ctx->libctx, ctx->propq);
1116     return crt;
1117 }
1118
1119 int OSSL_CMP_MSG_update_transactionID(OSSL_CMP_CTX *ctx, OSSL_CMP_MSG *msg)
1120 {
1121     if (ctx == NULL || msg == NULL) {
1122         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
1123         return 0;
1124     }
1125     if (!ossl_cmp_hdr_set_transactionID(ctx, msg->header))
1126         return 0;
1127     return msg->header->protectionAlg == NULL
1128             || ossl_cmp_msg_protect(ctx, msg);
1129 }
1130
1131 int OSSL_CMP_MSG_update_recipNonce(OSSL_CMP_CTX *ctx, OSSL_CMP_MSG *msg)
1132 {
1133     if (ctx == NULL || msg == NULL || msg->header == NULL) {
1134         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
1135         return 0;
1136     }
1137     if (ctx->recipNonce == NULL) /* nothing to do for 1st msg in transaction */
1138         return 1;
1139     if (!ossl_cmp_asn1_octet_string_set1(&msg->header->recipNonce,
1140                                          ctx->recipNonce))
1141         return 0;
1142     return msg->header->protectionAlg == NULL || ossl_cmp_msg_protect(ctx, msg);
1143 }
1144
1145 OSSL_CMP_MSG *OSSL_CMP_MSG_read(const char *file, OSSL_LIB_CTX *libctx,
1146                                 const char *propq)
1147 {
1148     OSSL_CMP_MSG *msg;
1149     BIO *bio = NULL;
1150
1151     if (file == NULL) {
1152         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
1153         return NULL;
1154     }
1155
1156     msg = OSSL_CMP_MSG_new(libctx, propq);
1157     if (msg == NULL) {
1158         ERR_raise(ERR_LIB_CMP, ERR_R_CMP_LIB);
1159         return NULL;
1160     }
1161
1162     if ((bio = BIO_new_file(file, "rb")) == NULL
1163             || d2i_OSSL_CMP_MSG_bio(bio, &msg) == NULL) {
1164         OSSL_CMP_MSG_free(msg);
1165         msg = NULL;
1166     }
1167     BIO_free(bio);
1168     return msg;
1169 }
1170
1171 int OSSL_CMP_MSG_write(const char *file, const OSSL_CMP_MSG *msg)
1172 {
1173     BIO *bio;
1174     int res;
1175
1176     if (file == NULL || msg == NULL) {
1177         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
1178         return -1;
1179     }
1180
1181     bio = BIO_new_file(file, "wb");
1182     if (bio == NULL)
1183         return -2;
1184     res = i2d_OSSL_CMP_MSG_bio(bio, msg);
1185     BIO_free(bio);
1186     return res;
1187 }
1188
1189 OSSL_CMP_MSG *d2i_OSSL_CMP_MSG(OSSL_CMP_MSG **msg, const unsigned char **in,
1190                                long len)
1191 {
1192     OSSL_LIB_CTX *libctx = NULL;
1193     const char *propq = NULL;
1194
1195     if (msg != NULL && *msg != NULL) {
1196         libctx  = (*msg)->libctx;
1197         propq = (*msg)->propq;
1198     }
1199
1200     return (OSSL_CMP_MSG *)ASN1_item_d2i_ex((ASN1_VALUE **)msg, in, len,
1201                                             ASN1_ITEM_rptr(OSSL_CMP_MSG),
1202                                             libctx, propq);
1203 }
1204
1205 int i2d_OSSL_CMP_MSG(const OSSL_CMP_MSG *msg, unsigned char **out)
1206 {
1207     return ASN1_item_i2d((const ASN1_VALUE *)msg, out,
1208                          ASN1_ITEM_rptr(OSSL_CMP_MSG));
1209 }
1210
1211 OSSL_CMP_MSG *d2i_OSSL_CMP_MSG_bio(BIO *bio, OSSL_CMP_MSG **msg)
1212 {
1213     OSSL_LIB_CTX *libctx = NULL;
1214     const char *propq = NULL;
1215
1216     if (msg != NULL && *msg != NULL) {
1217         libctx  = (*msg)->libctx;
1218         propq = (*msg)->propq;
1219     }
1220
1221     return ASN1_item_d2i_bio_ex(ASN1_ITEM_rptr(OSSL_CMP_MSG), bio, msg, libctx,
1222                                 propq);
1223 }
1224
1225 int i2d_OSSL_CMP_MSG_bio(BIO *bio, const OSSL_CMP_MSG *msg)
1226 {
1227     return ASN1_i2d_bio_of(OSSL_CMP_MSG, i2d_OSSL_CMP_MSG, bio, msg);
1228 }
1229
1230 int ossl_cmp_is_error_with_waiting(const OSSL_CMP_MSG *msg)
1231 {
1232     if (!ossl_assert(msg != NULL))
1233         return 0;
1234
1235     return (OSSL_CMP_MSG_get_bodytype(msg) == OSSL_CMP_PKIBODY_ERROR
1236             && ossl_cmp_pkisi_get_status(msg->body->value.error->pKIStatusInfo)
1237             == OSSL_CMP_PKISTATUS_waiting);
1238 }