1b077aed3SPierre Pronchery=pod 2b077aed3SPierre Pronchery 3b077aed3SPierre Pronchery=head1 NAME 4b077aed3SPierre Pronchery 5b077aed3SPierre ProncheryOSSL_CMP_CTX_new, 6b077aed3SPierre ProncheryOSSL_CMP_CTX_free, 7b077aed3SPierre ProncheryOSSL_CMP_CTX_reinit, 8b077aed3SPierre ProncheryOSSL_CMP_CTX_set_option, 9b077aed3SPierre ProncheryOSSL_CMP_CTX_get_option, 10b077aed3SPierre ProncheryOSSL_CMP_CTX_set_log_cb, 11b077aed3SPierre ProncheryOSSL_CMP_CTX_set_log_verbosity, 12b077aed3SPierre ProncheryOSSL_CMP_CTX_print_errors, 13b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_serverPath, 14b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_server, 15b077aed3SPierre ProncheryOSSL_CMP_CTX_set_serverPort, 16b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_proxy, 17b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_no_proxy, 18b077aed3SPierre ProncheryOSSL_CMP_CTX_set_http_cb, 19b077aed3SPierre ProncheryOSSL_CMP_CTX_set_http_cb_arg, 20b077aed3SPierre ProncheryOSSL_CMP_CTX_get_http_cb_arg, 21b077aed3SPierre ProncheryOSSL_CMP_transfer_cb_t, 22b077aed3SPierre ProncheryOSSL_CMP_CTX_set_transfer_cb, 23b077aed3SPierre ProncheryOSSL_CMP_CTX_set_transfer_cb_arg, 24b077aed3SPierre ProncheryOSSL_CMP_CTX_get_transfer_cb_arg, 25b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_srvCert, 26b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_expected_sender, 27b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_trustedStore, 28b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_trustedStore, 29b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_untrusted, 30b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_untrusted, 31b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_cert, 32b077aed3SPierre ProncheryOSSL_CMP_CTX_build_cert_chain, 33b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_pkey, 34b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_referenceValue, 35b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_secretValue, 36b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_recipient, 37b077aed3SPierre ProncheryOSSL_CMP_CTX_push0_geninfo_ITAV, 38b077aed3SPierre ProncheryOSSL_CMP_CTX_reset_geninfo_ITAVs, 39b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_extraCertsOut, 40b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_newPkey, 41b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newPkey, 42b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_issuer, 43b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_subjectName, 44b077aed3SPierre ProncheryOSSL_CMP_CTX_push1_subjectAltName, 45b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_reqExtensions, 46b077aed3SPierre ProncheryOSSL_CMP_CTX_reqExtensions_have_SAN, 47b077aed3SPierre ProncheryOSSL_CMP_CTX_push0_policy, 48b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_oldCert, 49b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_p10CSR, 50b077aed3SPierre ProncheryOSSL_CMP_CTX_push0_genm_ITAV, 51b077aed3SPierre ProncheryOSSL_CMP_certConf_cb_t, 52b077aed3SPierre ProncheryOSSL_CMP_certConf_cb, 53b077aed3SPierre ProncheryOSSL_CMP_CTX_set_certConf_cb, 54b077aed3SPierre ProncheryOSSL_CMP_CTX_set_certConf_cb_arg, 55b077aed3SPierre ProncheryOSSL_CMP_CTX_get_certConf_cb_arg, 56b077aed3SPierre ProncheryOSSL_CMP_CTX_get_status, 57b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_statusString, 58b077aed3SPierre ProncheryOSSL_CMP_CTX_get_failInfoCode, 59b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newCert, 60b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_newChain, 61b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_caPubs, 62b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_extraCertsIn, 63b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_transactionID, 64b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_senderNonce 65b077aed3SPierre Pronchery- functions for managing the CMP client context data structure 66b077aed3SPierre Pronchery 67b077aed3SPierre Pronchery=head1 SYNOPSIS 68b077aed3SPierre Pronchery 69b077aed3SPierre Pronchery #include <openssl/cmp.h> 70b077aed3SPierre Pronchery 71b077aed3SPierre Pronchery OSSL_CMP_CTX *OSSL_CMP_CTX_new(OSSL_LIB_CTX *libctx, const char *propq); 72b077aed3SPierre Pronchery void OSSL_CMP_CTX_free(OSSL_CMP_CTX *ctx); 73b077aed3SPierre Pronchery int OSSL_CMP_CTX_reinit(OSSL_CMP_CTX *ctx); 74b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_option(OSSL_CMP_CTX *ctx, int opt, int val); 75b077aed3SPierre Pronchery int OSSL_CMP_CTX_get_option(const OSSL_CMP_CTX *ctx, int opt); 76b077aed3SPierre Pronchery 77b077aed3SPierre Pronchery /* logging and error reporting: */ 78b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_log_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_log_cb_t cb); 79b077aed3SPierre Pronchery #define OSSL_CMP_CTX_set_log_verbosity(ctx, level) 80b077aed3SPierre Pronchery void OSSL_CMP_CTX_print_errors(const OSSL_CMP_CTX *ctx); 81b077aed3SPierre Pronchery 82b077aed3SPierre Pronchery /* message transfer: */ 83b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_serverPath(OSSL_CMP_CTX *ctx, const char *path); 84b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_server(OSSL_CMP_CTX *ctx, const char *address); 85b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_serverPort(OSSL_CMP_CTX *ctx, int port); 86b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_proxy(OSSL_CMP_CTX *ctx, const char *name); 87b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_no_proxy(OSSL_CMP_CTX *ctx, const char *names); 88b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_http_cb(OSSL_CMP_CTX *ctx, HTTP_bio_cb_t cb); 89b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_http_cb_arg(OSSL_CMP_CTX *ctx, void *arg); 90b077aed3SPierre Pronchery void *OSSL_CMP_CTX_get_http_cb_arg(const OSSL_CMP_CTX *ctx); 91b077aed3SPierre Pronchery typedef OSSL_CMP_MSG *(*OSSL_CMP_transfer_cb_t)(OSSL_CMP_CTX *ctx, 92b077aed3SPierre Pronchery const OSSL_CMP_MSG *req); 93b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_transfer_cb(OSSL_CMP_CTX *ctx, 94b077aed3SPierre Pronchery OSSL_CMP_transfer_cb_t cb); 95b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_transfer_cb_arg(OSSL_CMP_CTX *ctx, void *arg); 96b077aed3SPierre Pronchery void *OSSL_CMP_CTX_get_transfer_cb_arg(const OSSL_CMP_CTX *ctx); 97b077aed3SPierre Pronchery 98b077aed3SPierre Pronchery /* server authentication: */ 99b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_srvCert(OSSL_CMP_CTX *ctx, X509 *cert); 100b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_expected_sender(OSSL_CMP_CTX *ctx, 101b077aed3SPierre Pronchery const X509_NAME *name); 102b077aed3SPierre Pronchery int OSSL_CMP_CTX_set0_trustedStore(OSSL_CMP_CTX *ctx, X509_STORE *store); 103b077aed3SPierre Pronchery X509_STORE *OSSL_CMP_CTX_get0_trustedStore(const OSSL_CMP_CTX *ctx); 104b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_untrusted(OSSL_CMP_CTX *ctx, STACK_OF(X509) *certs); 105b077aed3SPierre Pronchery STACK_OF(X509) *OSSL_CMP_CTX_get0_untrusted(const OSSL_CMP_CTX *ctx); 106b077aed3SPierre Pronchery 107b077aed3SPierre Pronchery /* client authentication: */ 108b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_cert(OSSL_CMP_CTX *ctx, X509 *cert); 109b077aed3SPierre Pronchery int OSSL_CMP_CTX_build_cert_chain(OSSL_CMP_CTX *ctx, X509_STORE *own_trusted, 110b077aed3SPierre Pronchery STACK_OF(X509) *candidates); 111b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_pkey(OSSL_CMP_CTX *ctx, EVP_PKEY *pkey); 112b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_referenceValue(OSSL_CMP_CTX *ctx, 113b077aed3SPierre Pronchery const unsigned char *ref, int len); 114b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_secretValue(OSSL_CMP_CTX *ctx, 115b077aed3SPierre Pronchery const unsigned char *sec, int len); 116b077aed3SPierre Pronchery 117b077aed3SPierre Pronchery /* CMP message header and extra certificates: */ 118b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_recipient(OSSL_CMP_CTX *ctx, const X509_NAME *name); 119b077aed3SPierre Pronchery int OSSL_CMP_CTX_push0_geninfo_ITAV(OSSL_CMP_CTX *ctx, OSSL_CMP_ITAV *itav); 120b077aed3SPierre Pronchery int OSSL_CMP_CTX_reset_geninfo_ITAVs(OSSL_CMP_CTX *ctx); 121b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_extraCertsOut(OSSL_CMP_CTX *ctx, 122b077aed3SPierre Pronchery STACK_OF(X509) *extraCertsOut); 123b077aed3SPierre Pronchery 124b077aed3SPierre Pronchery /* certificate template: */ 125b077aed3SPierre Pronchery int OSSL_CMP_CTX_set0_newPkey(OSSL_CMP_CTX *ctx, int priv, EVP_PKEY *pkey); 126b077aed3SPierre Pronchery EVP_PKEY *OSSL_CMP_CTX_get0_newPkey(const OSSL_CMP_CTX *ctx, int priv); 127b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_issuer(OSSL_CMP_CTX *ctx, const X509_NAME *name); 128b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_subjectName(OSSL_CMP_CTX *ctx, const X509_NAME *name); 129b077aed3SPierre Pronchery int OSSL_CMP_CTX_push1_subjectAltName(OSSL_CMP_CTX *ctx, 130b077aed3SPierre Pronchery const GENERAL_NAME *name); 131b077aed3SPierre Pronchery int OSSL_CMP_CTX_set0_reqExtensions(OSSL_CMP_CTX *ctx, X509_EXTENSIONS *exts); 132b077aed3SPierre Pronchery int OSSL_CMP_CTX_reqExtensions_have_SAN(OSSL_CMP_CTX *ctx); 133b077aed3SPierre Pronchery int OSSL_CMP_CTX_push0_policy(OSSL_CMP_CTX *ctx, POLICYINFO *pinfo); 134b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_oldCert(OSSL_CMP_CTX *ctx, X509 *cert); 135b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_p10CSR(OSSL_CMP_CTX *ctx, const X509_REQ *csr); 136b077aed3SPierre Pronchery 137b077aed3SPierre Pronchery /* misc body contents: */ 138b077aed3SPierre Pronchery int OSSL_CMP_CTX_push0_genm_ITAV(OSSL_CMP_CTX *ctx, OSSL_CMP_ITAV *itav); 139b077aed3SPierre Pronchery 140b077aed3SPierre Pronchery /* certificate confirmation: */ 141b077aed3SPierre Pronchery typedef int (*OSSL_CMP_certConf_cb_t)(OSSL_CMP_CTX *ctx, X509 *cert, 142b077aed3SPierre Pronchery int fail_info, const char **txt); 143b077aed3SPierre Pronchery int OSSL_CMP_certConf_cb(OSSL_CMP_CTX *ctx, X509 *cert, int fail_info, 144b077aed3SPierre Pronchery const char **text); 145b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_certConf_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_certConf_cb_t cb); 146b077aed3SPierre Pronchery int OSSL_CMP_CTX_set_certConf_cb_arg(OSSL_CMP_CTX *ctx, void *arg); 147b077aed3SPierre Pronchery void *OSSL_CMP_CTX_get_certConf_cb_arg(const OSSL_CMP_CTX *ctx); 148b077aed3SPierre Pronchery 149b077aed3SPierre Pronchery /* result fetching: */ 150b077aed3SPierre Pronchery int OSSL_CMP_CTX_get_status(const OSSL_CMP_CTX *ctx); 151b077aed3SPierre Pronchery OSSL_CMP_PKIFREETEXT *OSSL_CMP_CTX_get0_statusString(const OSSL_CMP_CTX *ctx); 152b077aed3SPierre Pronchery int OSSL_CMP_CTX_get_failInfoCode(const OSSL_CMP_CTX *ctx); 153b077aed3SPierre Pronchery 154b077aed3SPierre Pronchery X509 *OSSL_CMP_CTX_get0_newCert(const OSSL_CMP_CTX *ctx); 155b077aed3SPierre Pronchery STACK_OF(X509) *OSSL_CMP_CTX_get1_newChain(const OSSL_CMP_CTX *ctx); 156b077aed3SPierre Pronchery STACK_OF(X509) *OSSL_CMP_CTX_get1_caPubs(const OSSL_CMP_CTX *ctx); 157b077aed3SPierre Pronchery STACK_OF(X509) *OSSL_CMP_CTX_get1_extraCertsIn(const OSSL_CMP_CTX *ctx); 158b077aed3SPierre Pronchery 159b077aed3SPierre Pronchery /* for testing and debugging purposes: */ 160b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_transactionID(OSSL_CMP_CTX *ctx, 161b077aed3SPierre Pronchery const ASN1_OCTET_STRING *id); 162b077aed3SPierre Pronchery int OSSL_CMP_CTX_set1_senderNonce(OSSL_CMP_CTX *ctx, 163b077aed3SPierre Pronchery const ASN1_OCTET_STRING *nonce); 164b077aed3SPierre Pronchery 165b077aed3SPierre Pronchery=head1 DESCRIPTION 166b077aed3SPierre Pronchery 167b077aed3SPierre ProncheryThis is the context API for using CMP (Certificate Management Protocol) with 168b077aed3SPierre ProncheryOpenSSL. 169b077aed3SPierre Pronchery 170b077aed3SPierre ProncheryOSSL_CMP_CTX_new() allocates an B<OSSL_CMP_CTX> structure associated with 171b077aed3SPierre Proncherythe library context I<libctx> and property query string I<propq>, 172b077aed3SPierre Proncheryboth of which may be NULL to select the defaults. 173b077aed3SPierre ProncheryIt initializes the remaining fields to their default values - for instance, 174b077aed3SPierre Proncherythe logging verbosity is set to OSSL_CMP_LOG_INFO, 175b077aed3SPierre Proncherythe message timeout is set to 120 seconds, 176b077aed3SPierre Proncheryand the proof-of-possession method is set to OSSL_CRMF_POPO_SIGNATURE. 177b077aed3SPierre Pronchery 178b077aed3SPierre ProncheryOSSL_CMP_CTX_free() deallocates an OSSL_CMP_CTX structure. 179b077aed3SPierre Pronchery 180b077aed3SPierre ProncheryOSSL_CMP_CTX_reinit() prepares the given I<ctx> for a further transaction by 181b077aed3SPierre Proncheryclearing the internal CMP transaction (aka session) status, PKIStatusInfo, 182b077aed3SPierre Proncheryand any previous results (newCert, newChain, caPubs, and extraCertsIn) 183b077aed3SPierre Proncheryfrom the last executed transaction. 184b077aed3SPierre ProncheryIt also clears any ITAVs that were added by OSSL_CMP_CTX_push0_genm_ITAV(). 185*6f1af0d7SPierre ProncheryAll other field values (i.e., CMP options) are retained for potential reuse. 186b077aed3SPierre Pronchery 187b077aed3SPierre ProncheryOSSL_CMP_CTX_set_option() sets the given value for the given option 188b077aed3SPierre Pronchery(e.g., OSSL_CMP_OPT_IMPLICIT_CONFIRM) in the given OSSL_CMP_CTX structure. 189b077aed3SPierre Pronchery 190b077aed3SPierre ProncheryThe following options can be set: 191b077aed3SPierre Pronchery 192b077aed3SPierre Pronchery=over 4 193b077aed3SPierre Pronchery 194b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_LOG_VERBOSITY> 195b077aed3SPierre Pronchery 196b077aed3SPierre Pronchery The level of severity needed for actually outputting log messages 197b077aed3SPierre Pronchery due to errors, warnings, general info, debugging, etc. 198b077aed3SPierre Pronchery Default is OSSL_CMP_LOG_INFO. See also L<OSSL_CMP_log_open(3)>. 199b077aed3SPierre Pronchery 200b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_KEEP_ALIVE> 201b077aed3SPierre Pronchery 202b077aed3SPierre Pronchery If the given value is 0 then HTTP connections are not kept open 203b077aed3SPierre Pronchery after receiving a response, which is the default behavior for HTTP 1.0. 204b077aed3SPierre Pronchery If the value is 1 or 2 then persistent connections are requested. 205b077aed3SPierre Pronchery If the value is 2 then persistent connections are required, 206b077aed3SPierre Pronchery i.e., in case the server does not grant them an error occurs. 207b077aed3SPierre Pronchery The default value is 1: prefer to keep the connection open. 208b077aed3SPierre Pronchery 209b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_MSG_TIMEOUT> 210b077aed3SPierre Pronchery 211b077aed3SPierre Pronchery Number of seconds a CMP request-response message round trip 212b077aed3SPierre Pronchery is allowed to take before a timeout error is returned. 213b077aed3SPierre Pronchery A value <= 0 means no limitation (waiting indefinitely). 214b077aed3SPierre Pronchery Default is to use the B<OSSL_CMP_OPT_TOTAL_TIMEOUT> setting. 215b077aed3SPierre Pronchery 216b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_TOTAL_TIMEOUT> 217b077aed3SPierre Pronchery 218b077aed3SPierre Pronchery Maximum total number of seconds a transaction may take, 219b077aed3SPierre Pronchery including polling etc. 220b077aed3SPierre Pronchery A value <= 0 means no limitation (waiting indefinitely). 221b077aed3SPierre Pronchery Default is 0. 222b077aed3SPierre Pronchery 223b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_VALIDITY_DAYS> 224b077aed3SPierre Pronchery 225b077aed3SPierre Pronchery Number of days new certificates are asked to be valid for. 226b077aed3SPierre Pronchery 227b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_SUBJECTALTNAME_NODEFAULT> 228b077aed3SPierre Pronchery 229b077aed3SPierre Pronchery Do not take default Subject Alternative Names 230b077aed3SPierre Pronchery from the reference certificate. 231b077aed3SPierre Pronchery 232b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_SUBJECTALTNAME_CRITICAL> 233b077aed3SPierre Pronchery 234b077aed3SPierre Pronchery Demand that the given Subject Alternative Names are flagged as critical. 235b077aed3SPierre Pronchery 236b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_POLICIES_CRITICAL> 237b077aed3SPierre Pronchery 238b077aed3SPierre Pronchery Demand that the given policies are flagged as critical. 239b077aed3SPierre Pronchery 240b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_POPO_METHOD> 241b077aed3SPierre Pronchery 242b077aed3SPierre Pronchery Select the proof of possession method to use. Possible values are: 243b077aed3SPierre Pronchery 244b077aed3SPierre Pronchery OSSL_CRMF_POPO_NONE - ProofOfPossession field omitted 245b077aed3SPierre Pronchery OSSL_CRMF_POPO_RAVERIFIED - assert that the RA has already 246b077aed3SPierre Pronchery verified the PoPo 247b077aed3SPierre Pronchery OSSL_CRMF_POPO_SIGNATURE - sign a value with private key, 248b077aed3SPierre Pronchery which is the default. 249b077aed3SPierre Pronchery OSSL_CRMF_POPO_KEYENC - decrypt the encrypted certificate 250b077aed3SPierre Pronchery ("indirect method") 251b077aed3SPierre Pronchery 252b077aed3SPierre Pronchery Note that a signature-based POPO can only be produced if a private key 253b077aed3SPierre Pronchery is provided as the newPkey or client's pkey component of the CMP context. 254b077aed3SPierre Pronchery 255b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_DIGEST_ALGNID> 256b077aed3SPierre Pronchery 257b077aed3SPierre Pronchery The NID of the digest algorithm to be used in RFC 4210's MSG_SIG_ALG 258b077aed3SPierre Pronchery for signature-based message protection and Proof-of-Possession (POPO). 259b077aed3SPierre Pronchery Default is SHA256. 260b077aed3SPierre Pronchery 261b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_OWF_ALGNID> 262b077aed3SPierre Pronchery The NID of the digest algorithm to be used as one-way function (OWF) 263*6f1af0d7SPierre Pronchery for MAC-based message protection with password-based MAC (PBM). 264*6f1af0d7SPierre Pronchery See RFC 4210 section 5.1.3.1 for details. 265b077aed3SPierre Pronchery Default is SHA256. 266b077aed3SPierre Pronchery 267b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_MAC_ALGNID> 268*6f1af0d7SPierre Pronchery The NID of the MAC algorithm to be used for message protection with PBM. 269b077aed3SPierre Pronchery Default is HMAC-SHA1 as per RFC 4210. 270b077aed3SPierre Pronchery 271b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_REVOCATION_REASON> 272b077aed3SPierre Pronchery 273b077aed3SPierre Pronchery The reason code to be included in a Revocation Request (RR); 274b077aed3SPierre Pronchery values: 0..10 (RFC 5210, 5.3.1) or -1 for none, which is the default. 275b077aed3SPierre Pronchery 276b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_IMPLICIT_CONFIRM> 277b077aed3SPierre Pronchery 278b077aed3SPierre Pronchery Request server to enable implicit confirm mode, where the client 279b077aed3SPierre Pronchery does not need to send confirmation upon receiving the 280b077aed3SPierre Pronchery certificate. If the server does not enable implicit confirmation 281b077aed3SPierre Pronchery in the return message, then confirmation is sent anyway. 282b077aed3SPierre Pronchery 283b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_DISABLE_CONFIRM> 284b077aed3SPierre Pronchery 285b077aed3SPierre Pronchery Do not confirm enrolled certificates, to cope with broken servers 286b077aed3SPierre Pronchery not supporting implicit confirmation correctly. 287b077aed3SPierre ProncheryB<WARNING:> This setting leads to unspecified behavior and it is meant 288b077aed3SPierre Proncheryexclusively to allow interoperability with server implementations violating 289b077aed3SPierre ProncheryRFC 4210. 290b077aed3SPierre Pronchery 291b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_UNPROTECTED_SEND> 292b077aed3SPierre Pronchery 293b077aed3SPierre Pronchery Send request or response messages without CMP-level protection. 294b077aed3SPierre Pronchery 295b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_UNPROTECTED_ERRORS> 296b077aed3SPierre Pronchery 297b077aed3SPierre Pronchery Accept unprotected error responses which are either explicitly 298b077aed3SPierre Pronchery unprotected or where protection verification failed. Applies to regular 299b077aed3SPierre Pronchery error messages as well as certificate responses (IP/CP/KUP) and 300b077aed3SPierre Pronchery revocation responses (RP) with rejection. 301b077aed3SPierre ProncheryB<WARNING:> This setting leads to unspecified behavior and it is meant 302b077aed3SPierre Proncheryexclusively to allow interoperability with server implementations violating 303b077aed3SPierre ProncheryRFC 4210. 304b077aed3SPierre Pronchery 305b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_IGNORE_KEYUSAGE> 306b077aed3SPierre Pronchery 307b077aed3SPierre Pronchery Ignore key usage restrictions in the signer's certificate when 308b077aed3SPierre Pronchery validating signature-based protection in received CMP messages. 309b077aed3SPierre Pronchery Else, 'digitalSignature' must be allowed by CMP signer certificates. 310b077aed3SPierre Pronchery 311b077aed3SPierre Pronchery=item B<OSSL_CMP_OPT_PERMIT_TA_IN_EXTRACERTS_FOR_IR> 312b077aed3SPierre Pronchery 313b077aed3SPierre Pronchery Allow retrieving a trust anchor from extraCerts and using that 314b077aed3SPierre Pronchery to validate the certificate chain of an IP message. 315b077aed3SPierre Pronchery 316b077aed3SPierre Pronchery=back 317b077aed3SPierre Pronchery 318b077aed3SPierre ProncheryOSSL_CMP_CTX_get_option() reads the current value of the given option 319b077aed3SPierre Pronchery(e.g., OSSL_CMP_OPT_IMPLICIT_CONFIRM) from the given OSSL_CMP_CTX structure. 320b077aed3SPierre Pronchery 321b077aed3SPierre ProncheryOSSL_CMP_CTX_set_log_cb() sets in I<ctx> the callback function I<cb> 322b077aed3SPierre Proncheryfor handling error queue entries and logging messages. 323b077aed3SPierre ProncheryWhen I<cb> is NULL errors are printed to STDERR (if available, else ignored) 324b077aed3SPierre Proncheryany log messages are ignored. 325b077aed3SPierre ProncheryAlternatively, L<OSSL_CMP_log_open(3)> may be used to direct logging to STDOUT. 326b077aed3SPierre Pronchery 327b077aed3SPierre ProncheryOSSL_CMP_CTX_set_log_verbosity() is a macro setting the 328b077aed3SPierre ProncheryOSSL_CMP_OPT_LOG_VERBOSITY context option to the given level. 329b077aed3SPierre Pronchery 330b077aed3SPierre ProncheryOSSL_CMP_CTX_print_errors() outputs any entries in the OpenSSL error queue. It 331b077aed3SPierre Proncheryis similar to L<ERR_print_errors_cb(3)> but uses the CMP log callback function 332b077aed3SPierre Proncheryif set in the I<ctx> for uniformity with CMP logging if given. Otherwise it uses 333b077aed3SPierre ProncheryL<ERR_print_errors(3)> to print to STDERR (unless OPENSSL_NO_STDIO is defined). 334b077aed3SPierre Pronchery 335b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_serverPath() sets the HTTP path of the CMP server on the host, 336b077aed3SPierre Proncheryalso known as "CMP alias". 337b077aed3SPierre ProncheryThe default is C</>. 338b077aed3SPierre Pronchery 339b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_server() sets the given server I<address> 340b077aed3SPierre Pronchery(which may be a hostname or IP address or NULL) in the given I<ctx>. 341b077aed3SPierre Pronchery 342b077aed3SPierre ProncheryOSSL_CMP_CTX_set_serverPort() sets the port of the CMP server to connect to. 343b077aed3SPierre ProncheryIf not used or the I<port> argument is 0 344b077aed3SPierre Proncherythe default port applies, which is 80 for HTTP and 443 for HTTPS. 345b077aed3SPierre Pronchery 346b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_proxy() sets the HTTP proxy to be used for connecting to 347b077aed3SPierre Proncherythe given CMP server unless overruled by any "no_proxy" settings (see below). 348b077aed3SPierre ProncheryIf TLS is not used this defaults to the value of 349b077aed3SPierre Proncherythe environment variable C<http_proxy> if set, else C<HTTP_PROXY>. 350b077aed3SPierre ProncheryOtherwise defaults to the value of C<https_proxy> if set, else C<HTTPS_PROXY>. 351b077aed3SPierre ProncheryAn empty proxy string specifies not to use a proxy. 352b077aed3SPierre ProncheryElse the format is C<[http[s]://]address[:port][/path]>, 353b077aed3SPierre Proncherywhere any path given is ignored. 354b077aed3SPierre ProncheryThe default port number is 80, or 443 in case C<https:> is given. 355b077aed3SPierre Pronchery 356b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_no_proxy() sets the list of server hostnames not to use 357b077aed3SPierre Proncheryan HTTP proxy for. The names may be separated by commas and/or whitespace. 358b077aed3SPierre ProncheryDefaults to the environment variable C<no_proxy> if set, else C<NO_PROXY>. 359b077aed3SPierre Pronchery 360b077aed3SPierre ProncheryOSSL_CMP_CTX_set_http_cb() sets the optional BIO connect/disconnect callback 361b077aed3SPierre Proncheryfunction, which has the prototype 362b077aed3SPierre Pronchery 363b077aed3SPierre Pronchery typedef BIO *(*HTTP_bio_cb_t) (BIO *bio, void *ctx, int connect, int detail); 364b077aed3SPierre Pronchery 365b077aed3SPierre ProncheryThe callback may modify the I<bio> provided by L<OSSL_CMP_MSG_http_perform(3)>, 366b077aed3SPierre Proncherywhereby it may make use of a custom defined argument I<ctx> 367b077aed3SPierre Proncherystored in the OSSL_CMP_CTX by means of OSSL_CMP_CTX_set_http_cb_arg(). 368b077aed3SPierre ProncheryDuring connection establishment, just after calling BIO_do_connect_retry(), 369b077aed3SPierre Proncherythe function is invoked with the I<connect> argument being 1 and the I<detail> 370b077aed3SPierre Proncheryargument being 1 if HTTPS is requested, i.e., SSL/TLS should be enabled. On 371b077aed3SPierre Proncherydisconnect I<connect> is 0 and I<detail> is 1 in case no error occurred, else 0. 372b077aed3SPierre ProncheryFor instance, on connect the function may prepend a TLS BIO to implement HTTPS; 373b077aed3SPierre Proncheryafter disconnect it may do some diagnostic output and/or specific cleanup. 374b077aed3SPierre ProncheryThe function should return NULL to indicate failure. 375b077aed3SPierre ProncheryAfter disconnect the modified BIO will be deallocated using BIO_free_all(). 376b077aed3SPierre Pronchery 377b077aed3SPierre ProncheryOSSL_CMP_CTX_set_http_cb_arg() sets an argument, respectively a pointer to 378b077aed3SPierre Proncherya structure containing arguments, 379b077aed3SPierre Proncheryoptionally to be used by the http connect/disconnect callback function. 380b077aed3SPierre ProncheryI<arg> is not consumed, and it must therefore explicitly be freed when not 381b077aed3SPierre Proncheryneeded any more. I<arg> may be NULL to clear the entry. 382b077aed3SPierre Pronchery 383b077aed3SPierre ProncheryOSSL_CMP_CTX_get_http_cb_arg() gets the argument, respectively the pointer to a 384b077aed3SPierre Proncherystructure containing arguments, previously set by 385b077aed3SPierre ProncheryOSSL_CMP_CTX_set_http_cb_arg() or NULL if unset. 386b077aed3SPierre Pronchery 387b077aed3SPierre ProncheryOSSL_CMP_CTX_set_transfer_cb() sets the message transfer callback function, 388b077aed3SPierre Proncherywhich has the type 389b077aed3SPierre Pronchery 390b077aed3SPierre Pronchery typedef OSSL_CMP_MSG *(*OSSL_CMP_transfer_cb_t) (OSSL_CMP_CTX *ctx, 391b077aed3SPierre Pronchery const OSSL_CMP_MSG *req); 392b077aed3SPierre Pronchery 393b077aed3SPierre ProncheryReturns 1 on success, 0 on error. 394b077aed3SPierre Pronchery 395b077aed3SPierre ProncheryDefault is NULL, which implies the use of L<OSSL_CMP_MSG_http_perform(3)>. 396b077aed3SPierre ProncheryThe callback should send the CMP request message it obtains via the I<req> 397b077aed3SPierre Proncheryparameter and on success return the response, else it must return NULL. 398b077aed3SPierre ProncheryThe transfer callback may make use of a custom defined argument stored in 399b077aed3SPierre Proncherythe ctx by means of OSSL_CMP_CTX_set_transfer_cb_arg(), which may be retrieved 400b077aed3SPierre Proncheryagain through OSSL_CMP_CTX_get_transfer_cb_arg(). 401b077aed3SPierre Pronchery 402b077aed3SPierre ProncheryOSSL_CMP_CTX_set_transfer_cb_arg() sets an argument, respectively a pointer to a 403b077aed3SPierre Proncherystructure containing arguments, optionally to be used by the transfer callback. 404b077aed3SPierre ProncheryI<arg> is not consumed, and it must therefore explicitly be freed when not 405b077aed3SPierre Proncheryneeded any more. I<arg> may be NULL to clear the entry. 406b077aed3SPierre Pronchery 407b077aed3SPierre ProncheryOSSL_CMP_CTX_get_transfer_cb_arg() gets the argument, respectively the pointer 408b077aed3SPierre Proncheryto a structure containing arguments, previously set by 409b077aed3SPierre ProncheryOSSL_CMP_CTX_set_transfer_cb_arg() or NULL if unset. 410b077aed3SPierre Pronchery 411b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_srvCert() sets the expected server cert in I<ctx> and trusts 412b077aed3SPierre Proncheryit directly (even if it is expired) when verifying signed response messages. 413b077aed3SPierre ProncheryThis pins the accepted CMP server and 414b077aed3SPierre Proncheryresults in ignoring whatever may be set using OSSL_CMP_CTX_set0_trustedStore(). 415b077aed3SPierre ProncheryAny previously set value is freed. 416b077aed3SPierre ProncheryThe I<cert> argument may be NULL to clear the entry. 417b077aed3SPierre ProncheryIf set, the subject of the certificate is also used 418b077aed3SPierre Proncheryas default value for the recipient of CMP requests 419b077aed3SPierre Proncheryand as default value for the expected sender of CMP responses. 420b077aed3SPierre Pronchery 421b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_expected_sender() sets the Distinguished Name (DN) 422b077aed3SPierre Proncheryexpected in the sender field of incoming CMP messages. 423b077aed3SPierre ProncheryDefaults to the subject of the pinned server certificate, if any. 424b077aed3SPierre ProncheryThis can be used to make sure that only a particular entity is accepted as 425b077aed3SPierre ProncheryCMP message signer, and attackers are not able to use arbitrary certificates 426b077aed3SPierre Proncheryof a trusted PKI hierarchy to fraudulently pose as CMP server. 427b077aed3SPierre ProncheryNote that this gives slightly more freedom than OSSL_CMP_CTX_set1_srvCert(), 428b077aed3SPierre Proncherywhich pins the server to the holder of a particular certificate, while the 429b077aed3SPierre Proncheryexpected sender name will continue to match after updates of the server cert. 430b077aed3SPierre Pronchery 431b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_trustedStore() 432b077aed3SPierre Proncherysets in the CMP context I<ctx> the certificate store of type X509_STORE 433b077aed3SPierre Proncherycontaining trusted certificates, typically of root CAs. 434b077aed3SPierre ProncheryThis is ignored when a certificate is pinned using OSSL_CMP_CTX_set1_srvCert(). 435b077aed3SPierre ProncheryThe store may also hold CRLs and a certificate verification callback function 436b077aed3SPierre Proncheryused for signature-based peer authentication. 437b077aed3SPierre ProncheryAny store entry already set before is freed. 438b077aed3SPierre ProncheryWhen given a NULL parameter the entry is cleared. 439b077aed3SPierre Pronchery 440b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_trustedStore() 441b077aed3SPierre Proncheryextracts from the CMP context I<ctx> the pointer to the currently set 442b077aed3SPierre Proncherycertificate store containing trust anchors etc., or an empty store if unset. 443b077aed3SPierre Pronchery 444b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_untrusted() sets up a list of non-trusted certificates 445b077aed3SPierre Proncheryof intermediate CAs that may be useful for path construction for the own CMP 446b077aed3SPierre Proncherysigner certificate, for the own TLS certificate (if any), when verifying peer 447b077aed3SPierre ProncheryCMP protection certificates, and when verifying newly enrolled certificates. 448b077aed3SPierre ProncheryThe reference counts of those certificates handled successfully are increased. 449b077aed3SPierre Pronchery 450b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_untrusted(OSSL_CMP_CTX *ctx) returns a pointer to the 451b077aed3SPierre Proncherylist of untrusted certs, which may be empty if unset. 452b077aed3SPierre Pronchery 453*6f1af0d7SPierre ProncheryOSSL_CMP_CTX_set1_cert() sets the CMP signer certificate, also called protection 454*6f1af0d7SPierre Proncherycertificate, related to the private key for signature-based message protection. 455b077aed3SPierre ProncheryTherefore the public key of this I<cert> must correspond to 456b077aed3SPierre Proncherythe private key set before or thereafter via OSSL_CMP_CTX_set1_pkey(). 457b077aed3SPierre ProncheryWhen using signature-based protection of CMP request messages 458b077aed3SPierre Proncherythis CMP signer certificate will be included first in the extraCerts field. 459b077aed3SPierre ProncheryIt serves as fallback reference certificate, see OSSL_CMP_CTX_set1_oldCert(). 460b077aed3SPierre ProncheryThe subject of this I<cert> will be used as the sender field of outgoing 461b077aed3SPierre Proncherymessages, while the subject of any cert set via OSSL_CMP_CTX_set1_oldCert() 462b077aed3SPierre Proncheryand any value set via OSSL_CMP_CTX_set1_subjectName() are used as fallback. 463b077aed3SPierre Pronchery 464b077aed3SPierre ProncheryThe I<cert> argument may be NULL to clear the entry. 465b077aed3SPierre Pronchery 466b077aed3SPierre ProncheryOSSL_CMP_CTX_build_cert_chain() builds a certificate chain for the CMP signer 467b077aed3SPierre Proncherycertificate previously set in the I<ctx>. It adds the optional I<candidates>, 468b077aed3SPierre Proncherya list of intermediate CA certs that may already constitute the targeted chain, 469b077aed3SPierre Proncheryto the untrusted certs that may already exist in the I<ctx>. 470b077aed3SPierre ProncheryThen the function uses this augmented set of certs for chain construction. 471b077aed3SPierre ProncheryIf I<own_trusted> is NULL it builds the chain as far down as possible and 472b077aed3SPierre Proncheryignores any verification errors. Else the CMP signer certificate must be 473b077aed3SPierre Proncheryverifiable where the chain reaches a trust anchor contained in I<own_trusted>. 474b077aed3SPierre ProncheryOn success the function stores the resulting chain in I<ctx> 475b077aed3SPierre Proncheryfor inclusion in the extraCerts field of signature-protected messages. 476b077aed3SPierre ProncheryCalling this function is optional; by default a chain construction 477b077aed3SPierre Proncheryis performed on demand that is equivalent to calling this function 478b077aed3SPierre Proncherywith the I<candidates> and I<own_trusted> arguments being NULL. 479b077aed3SPierre Pronchery 480b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_pkey() sets the client's private key corresponding to the 481b077aed3SPierre ProncheryCMP signer certificate set via OSSL_CMP_CTX_set1_cert(). 482b077aed3SPierre ProncheryThis key is used create signature-based protection (protectionAlg = MSG_SIG_ALG) 483b077aed3SPierre Proncheryof outgoing messages 484*6f1af0d7SPierre Proncheryunless a symmetric secret has been set via OSSL_CMP_CTX_set1_secretValue(). 485b077aed3SPierre ProncheryThe I<pkey> argument may be NULL to clear the entry. 486b077aed3SPierre Pronchery 487*6f1af0d7SPierre ProncheryOSSL_CMP_CTX_set1_secretValue() sets in I<ctx> the byte string I<sec> of length 488*6f1af0d7SPierre ProncheryI<len> to use as pre-shared secret, or clears it if the I<sec> argument is NULL. 489*6f1af0d7SPierre ProncheryIf present, this secret is used to create MAC-based authentication and integrity 490*6f1af0d7SPierre Proncheryprotection (rather than applying signature-based protection) 491*6f1af0d7SPierre Proncheryof outgoing messages and to verify authenticity and integrity of incoming 492*6f1af0d7SPierre Proncherymessages that have MAC-based protection (protectionAlg = C<MSG_MAC_ALG>). 493b077aed3SPierre Pronchery 494b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_referenceValue() sets the given referenceValue I<ref> with 495b077aed3SPierre Proncherylength I<len> in the given I<ctx> or clears it if the I<ref> argument is NULL. 496b077aed3SPierre ProncheryAccording to RFC 4210 section 5.1.1, if no value for the sender field in 497b077aed3SPierre ProncheryCMP message headers can be determined (i.e., no CMP signer certificate 498b077aed3SPierre Proncheryand no subject DN is set via OSSL_CMP_CTX_set1_subjectName() 499b077aed3SPierre Proncherythen the sender field will contain the NULL-DN 500b077aed3SPierre Proncheryand the senderKID field of the CMP message header must be set. 501b077aed3SPierre ProncheryWhen signature-based protection is used the senderKID will be set to 502b077aed3SPierre Proncherythe subjectKeyIdentifier of the CMP signer certificate as far as present. 503*6f1af0d7SPierre ProncheryIf not present or when MAC-based protection is used 504b077aed3SPierre Proncherythe I<ref> value is taken as the fallback value for the senderKID. 505b077aed3SPierre Pronchery 506b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_recipient() sets the recipient name that will be used in the 507b077aed3SPierre ProncheryPKIHeader of CMP request messages, i.e. the X509 name of the (CA) server. 508b077aed3SPierre Pronchery 509b077aed3SPierre ProncheryThe recipient field in the header of a CMP message is mandatory. 510b077aed3SPierre ProncheryIf not given explicitly the recipient is determined in the following order: 511b077aed3SPierre Proncherythe subject of the CMP server certificate set using OSSL_CMP_CTX_set1_srvCert(), 512b077aed3SPierre Proncherythe value set using OSSL_CMP_CTX_set1_issuer(), 513b077aed3SPierre Proncherythe issuer of the certificate set using OSSL_CMP_CTX_set1_oldCert(), 514b077aed3SPierre Proncherythe issuer of the CMP signer certificate, 515b077aed3SPierre Proncheryas far as any of those is present, else the NULL-DN as last resort. 516b077aed3SPierre Pronchery 517b077aed3SPierre ProncheryOSSL_CMP_CTX_push0_geninfo_ITAV() adds I<itav> to the stack in the I<ctx> to be 518b077aed3SPierre Proncheryadded to the GeneralInfo field of the CMP PKIMessage header of a request 519b077aed3SPierre Proncherymessage sent with this context. 520b077aed3SPierre Pronchery 521b077aed3SPierre ProncheryOSSL_CMP_CTX_reset_geninfo_ITAVs() 522b077aed3SPierre Proncheryclears any ITAVs that were added by OSSL_CMP_CTX_push0_geninfo_ITAV(). 523b077aed3SPierre Pronchery 524b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_extraCertsOut() sets the stack of extraCerts that will be 525b077aed3SPierre Proncherysent to remote. 526b077aed3SPierre Pronchery 527b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_newPkey() can be used to explicitly set the given EVP_PKEY 528b077aed3SPierre Proncherystructure as the private or public key to be certified in the CMP context. 529b077aed3SPierre ProncheryThe I<priv> parameter must be 0 if and only if the given key is a public key. 530b077aed3SPierre Pronchery 531b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newPkey() gives the key to use for certificate enrollment 532b077aed3SPierre Proncherydependent on fields of the CMP context structure: 533b077aed3SPierre Proncherythe newPkey (which may be a private or public key) if present, 534b077aed3SPierre Proncheryelse the public key in the p10CSR if present, else the client's private key. 535b077aed3SPierre ProncheryIf the I<priv> parameter is not 0 and the selected key does not have a 536b077aed3SPierre Proncheryprivate component then NULL is returned. 537b077aed3SPierre Pronchery 538b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_issuer() sets the name of the intended issuer that 539b077aed3SPierre Proncherywill be set in the CertTemplate, i.e., the X509 name of the CA server. 540b077aed3SPierre Pronchery 541b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_subjectName() sets the subject DN that will be used in 542b077aed3SPierre Proncherythe CertTemplate structure when requesting a new cert. For Key Update Requests 543b077aed3SPierre Pronchery(KUR), it defaults to the subject DN of the reference certificate, 544b077aed3SPierre Proncherysee OSSL_CMP_CTX_set1_oldCert(). This default is used for Initialization 545b077aed3SPierre ProncheryRequests (IR) and Certification Requests (CR) only if no SANs are set. 546b077aed3SPierre ProncheryThe I<subjectName> is also used as fallback for the sender field 547b077aed3SPierre Proncheryof outgoing CMP messages if no reference certificate is available. 548b077aed3SPierre Pronchery 549b077aed3SPierre ProncheryOSSL_CMP_CTX_push1_subjectAltName() adds the given X509 name to the list of 550b077aed3SPierre Proncheryalternate names on the certificate template request. This cannot be used if 551b077aed3SPierre Proncheryany Subject Alternative Name extension is set via 552b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_reqExtensions(). 553b077aed3SPierre ProncheryBy default, unless B<OSSL_CMP_OPT_SUBJECTALTNAME_NODEFAULT> has been set, 554b077aed3SPierre Proncherythe Subject Alternative Names are copied from the reference certificate, 555b077aed3SPierre Proncherysee OSSL_CMP_CTX_set1_oldCert(). 556b077aed3SPierre ProncheryIf set and the subject DN is not set with OSSL_CMP_CTX_set1_subjectName() then 557b077aed3SPierre Proncherythe certificate template of an IR and CR will not be filled with the default 558b077aed3SPierre Proncherysubject DN from the reference certificate. 559b077aed3SPierre ProncheryIf a subject DN is desired it needs to be set explicitly with 560b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_subjectName(). 561b077aed3SPierre Pronchery 562b077aed3SPierre ProncheryOSSL_CMP_CTX_set0_reqExtensions() sets the X.509v3 extensions to be used in 563b077aed3SPierre ProncheryIR/CR/KUR. 564b077aed3SPierre Pronchery 565b077aed3SPierre ProncheryOSSL_CMP_CTX_reqExtensions_have_SAN() returns 1 if the context contains 566b077aed3SPierre Proncherya Subject Alternative Name extension, else 0 or -1 on error. 567b077aed3SPierre Pronchery 568b077aed3SPierre ProncheryOSSL_CMP_CTX_push0_policy() adds the certificate policy info object 569b077aed3SPierre Proncheryto the X509_EXTENSIONS of the requested certificate template. 570b077aed3SPierre Pronchery 571b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_oldCert() sets the old certificate to be updated in 572b077aed3SPierre ProncheryKey Update Requests (KUR) or to be revoked in Revocation Requests (RR). 573b077aed3SPierre ProncheryIt must be given for RR, else it defaults to the CMP signer certificate. 574b077aed3SPierre ProncheryThe I<reference certificate> determined in this way, if any, is also used for 575b077aed3SPierre Proncheryderiving default subject DN, public key, Subject Alternative Names, and the 576b077aed3SPierre Proncherydefault issuer entry in the requested certificate template of IR/CR/KUR. 577b077aed3SPierre ProncheryThe subject of the reference certificate is used as the sender field value 578b077aed3SPierre Proncheryin CMP message headers. 579b077aed3SPierre ProncheryIts issuer is used as default recipient in CMP message headers. 580b077aed3SPierre Pronchery 581b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_p10CSR() sets the PKCS#10 CSR to use in P10CR messages. 582b077aed3SPierre ProncheryIf such a CSR is provided, its subject, public key, and extension fields are 583b077aed3SPierre Proncheryalso used as fallback values for the certificate template of IR/CR/KUR messages. 584b077aed3SPierre Pronchery 585b077aed3SPierre ProncheryOSSL_CMP_CTX_push0_genm_ITAV() adds I<itav> to the stack in the I<ctx> which 586b077aed3SPierre Proncherywill be the body of a General Message sent with this context. 587b077aed3SPierre Pronchery 588b077aed3SPierre ProncheryOSSL_CMP_certConf_cb() is the default certificate confirmation callback function. 589b077aed3SPierre ProncheryIf the callback argument is not NULL it must point to a trust store. 590b077aed3SPierre ProncheryIn this case the function checks that the newly enrolled certificate can be 591b077aed3SPierre Proncheryverified using this trust store and untrusted certificates from the I<ctx>, 592b077aed3SPierre Proncherywhich have been augmented by the list of extraCerts received. 593b077aed3SPierre ProncheryDuring this verification, any certificate status checking is disabled. 594b077aed3SPierre ProncheryIf the callback argument is NULL the function tries building an approximate 595b077aed3SPierre Proncherychain as far as possible using the same untrusted certificates from the I<ctx>, 596b077aed3SPierre Proncheryand if this fails it takes the received extraCerts as fallback. 597b077aed3SPierre ProncheryThe resulting cert chain can be retrieved using OSSL_CMP_CTX_get1_newChain(). 598b077aed3SPierre Pronchery 599b077aed3SPierre ProncheryOSSL_CMP_CTX_set_certConf_cb() sets the callback used for evaluating the newly 600b077aed3SPierre Proncheryenrolled certificate before the library sends, depending on its result, 601b077aed3SPierre Proncherya positive or negative certConf message to the server. The callback has type 602b077aed3SPierre Pronchery 603b077aed3SPierre Pronchery typedef int (*OSSL_CMP_certConf_cb_t) (OSSL_CMP_CTX *ctx, X509 *cert, 604b077aed3SPierre Pronchery int fail_info, const char **txt); 605b077aed3SPierre Pronchery 606b077aed3SPierre Proncheryand should inspect the certificate it obtains via the I<cert> parameter and may 607b077aed3SPierre Proncheryoverrule the pre-decision given in the I<fail_info> and I<*txt> parameters. 608b077aed3SPierre ProncheryIf it accepts the certificate it must return 0, indicating success. Else it must 609b077aed3SPierre Proncheryreturn a bit field reflecting PKIFailureInfo with at least one failure bit and 610b077aed3SPierre Proncherymay set the I<*txt> output parameter to point to a string constant with more 611b077aed3SPierre Proncherydetail. The transfer callback may make use of a custom defined argument stored 612b077aed3SPierre Proncheryin the I<ctx> by means of OSSL_CMP_CTX_set_certConf_cb_arg(), which may be 613b077aed3SPierre Proncheryretrieved again through OSSL_CMP_CTX_get_certConf_cb_arg(). 614b077aed3SPierre ProncheryTypically, the callback will check at least that the certificate can be verified 615b077aed3SPierre Proncheryusing a set of trusted certificates. 616b077aed3SPierre ProncheryIt also could compare the subject DN and other fields of the newly 617b077aed3SPierre Proncheryenrolled certificate with the certificate template of the request. 618b077aed3SPierre Pronchery 619b077aed3SPierre ProncheryOSSL_CMP_CTX_set_certConf_cb_arg() sets an argument, respectively a pointer to a 620b077aed3SPierre Proncherystructure containing arguments, optionally to be used by the certConf callback. 621b077aed3SPierre ProncheryI<arg> is not consumed, and it must therefore explicitly be freed when not 622b077aed3SPierre Proncheryneeded any more. I<arg> may be NULL to clear the entry. 623b077aed3SPierre Pronchery 624b077aed3SPierre ProncheryOSSL_CMP_CTX_get_certConf_cb_arg() gets the argument, respectively the pointer 625b077aed3SPierre Proncheryto a structure containing arguments, previously set by 626b077aed3SPierre ProncheryOSSL_CMP_CTX_set_certConf_cb_arg(), or NULL if unset. 627b077aed3SPierre Pronchery 628b077aed3SPierre ProncheryOSSL_CMP_CTX_get_status() returns for client contexts the PKIstatus from 629b077aed3SPierre Proncherythe last received CertRepMessage or Revocation Response or error message: 630aa795734SPierre Pronchery=item B<OSSL_CMP_PKISTATUS_accepted> on successful receipt of a GENP message: 631b077aed3SPierre Pronchery 632b077aed3SPierre Pronchery=over 4 633b077aed3SPierre Pronchery 634b077aed3SPierre Pronchery=item B<OSSL_CMP_PKISTATUS_request> 635b077aed3SPierre Pronchery 636b077aed3SPierre Proncheryif an IR/CR/KUR/RR/GENM request message could not be produced, 637b077aed3SPierre Pronchery 638b077aed3SPierre Pronchery=item B<OSSL_CMP_PKISTATUS_trans> 639b077aed3SPierre Pronchery 640b077aed3SPierre Proncheryon a transmission error or transaction error for this type of request, and 641b077aed3SPierre Pronchery 642b077aed3SPierre Pronchery=item B<OSSL_CMP_PKISTATUS_unspecified> 643b077aed3SPierre Pronchery 644b077aed3SPierre Proncheryif no such request was attempted or OSSL_CMP_CTX_reinit() has been called. 645b077aed3SPierre Pronchery 646b077aed3SPierre Pronchery=back 647b077aed3SPierre Pronchery 648b077aed3SPierre ProncheryFor server contexts it returns 649b077aed3SPierre ProncheryB<OSSL_CMP_PKISTATUS_trans> if a transaction is open, 650b077aed3SPierre Proncheryotherwise B<OSSL_CMP_PKISTATUS_unspecified>. 651b077aed3SPierre Pronchery 652b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_statusString() returns the statusString from the last received 653b077aed3SPierre ProncheryCertRepMessage or Revocation Response or error message, or NULL if unset. 654b077aed3SPierre Pronchery 655b077aed3SPierre ProncheryOSSL_CMP_CTX_get_failInfoCode() returns the error code from the failInfo field 656b077aed3SPierre Proncheryof the last received CertRepMessage or Revocation Response or error message, 657b077aed3SPierre Proncheryor -1 if no such response was received or OSSL_CMP_CTX_reinit() has been called. 658b077aed3SPierre ProncheryThis is a bit field and the flags for it are specified in the header file 659b077aed3SPierre ProncheryF<< <openssl/cmp.h> >>. 660b077aed3SPierre ProncheryThe flags start with OSSL_CMP_CTX_FAILINFO, for example: 661b077aed3SPierre ProncheryOSSL_CMP_CTX_FAILINFO_badAlg. Returns -1 if the failInfoCode field is unset. 662b077aed3SPierre Pronchery 663b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newCert() returns the pointer to the newly obtained 664b077aed3SPierre Proncherycertificate in case it is available, else NULL. 665b077aed3SPierre Pronchery 666b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_newChain() returns a pointer to a duplicate of the stack of 667b077aed3SPierre ProncheryX.509 certificates computed by OSSL_CMP_certConf_cb() (if this function has 668b077aed3SPierre Proncherybeen called) on the last received certificate response message IP/CP/KUP. 669b077aed3SPierre Pronchery 670b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_caPubs() returns a pointer to a duplicate of the list of 671b077aed3SPierre ProncheryX.509 certificates in the caPubs field of the last received certificate 672b077aed3SPierre Proncheryresponse message (of type IP, CP, or KUP), 673b077aed3SPierre Proncheryor an empty stack if no caPubs have been received in the current transaction. 674b077aed3SPierre Pronchery 675b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_extraCertsIn() returns a pointer to a duplicate of the list 676b077aed3SPierre Proncheryof X.509 certificates contained in the extraCerts field of the last received 677b077aed3SPierre Proncheryresponse message (except for pollRep and PKIConf), or 678b077aed3SPierre Proncheryan empty stack if no extraCerts have been received in the current transaction. 679b077aed3SPierre Pronchery 680b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_transactionID() sets the given transaction ID in the given 681b077aed3SPierre ProncheryOSSL_CMP_CTX structure. 682b077aed3SPierre Pronchery 683b077aed3SPierre ProncheryOSSL_CMP_CTX_set1_senderNonce() stores the last sent sender I<nonce> in 684b077aed3SPierre Proncherythe I<ctx>. This will be used to validate the recipNonce in incoming messages. 685b077aed3SPierre Pronchery 686b077aed3SPierre Pronchery=head1 NOTES 687b077aed3SPierre Pronchery 688b077aed3SPierre ProncheryCMP is defined in RFC 4210 (and CRMF in RFC 4211). 689b077aed3SPierre Pronchery 690b077aed3SPierre Pronchery=head1 RETURN VALUES 691b077aed3SPierre Pronchery 692b077aed3SPierre ProncheryOSSL_CMP_CTX_free() and OSSL_CMP_CTX_print_errors() do not return anything. 693b077aed3SPierre Pronchery 694b077aed3SPierre ProncheryOSSL_CMP_CTX_new(), 695b077aed3SPierre ProncheryOSSL_CMP_CTX_get_http_cb_arg(), 696b077aed3SPierre ProncheryOSSL_CMP_CTX_get_transfer_cb_arg(), 697b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_trustedStore(), 698b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_untrusted(), 699b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newPkey(), 700b077aed3SPierre ProncheryOSSL_CMP_CTX_get_certConf_cb_arg(), 701b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_statusString(), 702b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newCert(), 703b077aed3SPierre ProncheryOSSL_CMP_CTX_get0_newChain(), 704b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_caPubs(), and 705b077aed3SPierre ProncheryOSSL_CMP_CTX_get1_extraCertsIn() 706b077aed3SPierre Proncheryreturn the intended pointer value as described above or NULL on error. 707b077aed3SPierre Pronchery 708b077aed3SPierre ProncheryOSSL_CMP_CTX_get_option(), 709b077aed3SPierre ProncheryOSSL_CMP_CTX_reqExtensions_have_SAN(), 710b077aed3SPierre ProncheryOSSL_CMP_CTX_get_status(), and 711b077aed3SPierre ProncheryOSSL_CMP_CTX_get_failInfoCode() 712b077aed3SPierre Proncheryreturn the intended value as described above or -1 on error. 713b077aed3SPierre Pronchery 714b077aed3SPierre ProncheryOSSL_CMP_certConf_cb() returns I<fail_info> if it is not equal to 0, 715b077aed3SPierre Proncheryelse 0 on successful validation, 716b077aed3SPierre Proncheryor else a bit field with the B<OSSL_CMP_PKIFAILUREINFO_incorrectData> bit set. 717b077aed3SPierre Pronchery 718b077aed3SPierre ProncheryAll other functions, including OSSL_CMP_CTX_reinit() 719b077aed3SPierre Proncheryand OSSL_CMP_CTX_reset_geninfo_ITAVs(), 720b077aed3SPierre Proncheryreturn 1 on success, 0 on error. 721b077aed3SPierre Pronchery 722b077aed3SPierre Pronchery=head1 EXAMPLES 723b077aed3SPierre Pronchery 724b077aed3SPierre ProncheryThe following code omits error handling. 725b077aed3SPierre Pronchery 726b077aed3SPierre ProncherySet up a CMP client context for sending requests and verifying responses: 727b077aed3SPierre Pronchery 728b077aed3SPierre Pronchery cmp_ctx = OSSL_CMP_CTX_new(); 729b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_server(cmp_ctx, name_or_address); 730b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_serverPort(cmp_ctx, port_string); 731b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_serverPath(cmp_ctx, path_or_alias); 732b077aed3SPierre Pronchery OSSL_CMP_CTX_set0_trustedStore(cmp_ctx, ts); 733b077aed3SPierre Pronchery 734*6f1af0d7SPierre ProncherySet up symmetric credentials for MAC-based message protection such as PBM: 735b077aed3SPierre Pronchery 736b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_referenceValue(cmp_ctx, ref, ref_len); 737b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_secretValue(cmp_ctx, sec, sec_len); 738b077aed3SPierre Pronchery 739b077aed3SPierre ProncherySet up the details for certificate requests: 740b077aed3SPierre Pronchery 741b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_subjectName(cmp_ctx, name); 742b077aed3SPierre Pronchery OSSL_CMP_CTX_set0_newPkey(cmp_ctx, 1, initialKey); 743b077aed3SPierre Pronchery 744b077aed3SPierre ProncheryPerform an Initialization Request transaction: 745b077aed3SPierre Pronchery 746b077aed3SPierre Pronchery initialCert = OSSL_CMP_exec_IR_ses(cmp_ctx); 747b077aed3SPierre Pronchery 748b077aed3SPierre ProncheryReset the transaction state of the CMP context and the credentials: 749b077aed3SPierre Pronchery 750b077aed3SPierre Pronchery OSSL_CMP_CTX_reinit(cmp_ctx); 751b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_referenceValue(cmp_ctx, NULL, 0); 752b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_secretValue(cmp_ctx, NULL, 0); 753b077aed3SPierre Pronchery 754b077aed3SPierre ProncheryPerform a Certification Request transaction, making use of the new credentials: 755b077aed3SPierre Pronchery 756b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_cert(cmp_ctx, initialCert); 757b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_pkey(cmp_ctx, initialKey); 758b077aed3SPierre Pronchery OSSL_CMP_CTX_set0_newPkey(cmp_ctx, 1, curentKey); 759b077aed3SPierre Pronchery currentCert = OSSL_CMP_exec_CR_ses(cmp_ctx); 760b077aed3SPierre Pronchery 761b077aed3SPierre ProncheryPerform a Key Update Request, signed using the cert (and key) to be updated: 762b077aed3SPierre Pronchery 763b077aed3SPierre Pronchery OSSL_CMP_CTX_reinit(cmp_ctx); 764b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_cert(cmp_ctx, currentCert); 765b077aed3SPierre Pronchery OSSL_CMP_CTX_set1_pkey(cmp_ctx, currentKey); 766b077aed3SPierre Pronchery OSSL_CMP_CTX_set0_newPkey(cmp_ctx, 1, updatedKey); 767b077aed3SPierre Pronchery currentCert = OSSL_CMP_exec_KUR_ses(cmp_ctx); 768b077aed3SPierre Pronchery currentKey = updatedKey; 769b077aed3SPierre Pronchery 770b077aed3SPierre ProncheryPerform a General Message transaction including, as an example, 771b077aed3SPierre Proncherythe id-it-signKeyPairTypes OID and prints info on the General Response contents: 772b077aed3SPierre Pronchery 773b077aed3SPierre Pronchery OSSL_CMP_CTX_reinit(cmp_ctx); 774b077aed3SPierre Pronchery 775b077aed3SPierre Pronchery ASN1_OBJECT *type = OBJ_txt2obj("1.3.6.1.5.5.7.4.2", 1); 776b077aed3SPierre Pronchery OSSL_CMP_ITAV *itav = OSSL_CMP_ITAV_create(type, NULL); 777b077aed3SPierre Pronchery OSSL_CMP_CTX_push0_genm_ITAV(cmp_ctx, itav); 778b077aed3SPierre Pronchery 779b077aed3SPierre Pronchery STACK_OF(OSSL_CMP_ITAV) *itavs; 780b077aed3SPierre Pronchery itavs = OSSL_CMP_exec_GENM_ses(cmp_ctx); 781b077aed3SPierre Pronchery print_itavs(itavs); 782b077aed3SPierre Pronchery sk_OSSL_CMP_ITAV_pop_free(itavs, OSSL_CMP_ITAV_free); 783b077aed3SPierre Pronchery 784b077aed3SPierre Pronchery=head1 SEE ALSO 785b077aed3SPierre Pronchery 786b077aed3SPierre ProncheryL<OSSL_CMP_exec_IR_ses(3)>, L<OSSL_CMP_exec_CR_ses(3)>, 787b077aed3SPierre ProncheryL<OSSL_CMP_exec_KUR_ses(3)>, L<OSSL_CMP_exec_GENM_ses(3)>, 788b077aed3SPierre ProncheryL<OSSL_CMP_exec_certreq(3)>, L<OSSL_CMP_MSG_http_perform(3)>, 789b077aed3SPierre ProncheryL<ERR_print_errors_cb(3)> 790b077aed3SPierre Pronchery 791b077aed3SPierre Pronchery=head1 HISTORY 792b077aed3SPierre Pronchery 793b077aed3SPierre ProncheryThe OpenSSL CMP support was added in OpenSSL 3.0. 794b077aed3SPierre Pronchery 795b077aed3SPierre ProncheryOSSL_CMP_CTX_reset_geninfo_ITAVs() was added in OpenSSL 3.0.8. 796b077aed3SPierre Pronchery 797b077aed3SPierre Pronchery=head1 COPYRIGHT 798b077aed3SPierre Pronchery 799b077aed3SPierre ProncheryCopyright 2007-2023 The OpenSSL Project Authors. All Rights Reserved. 800b077aed3SPierre Pronchery 801b077aed3SPierre ProncheryLicensed under the Apache License 2.0 (the "License"). You may not use 802b077aed3SPierre Proncherythis file except in compliance with the License. You can obtain a copy 803b077aed3SPierre Proncheryin the file LICENSE in the source distribution or at 804b077aed3SPierre ProncheryL<https://www.openssl.org/source/license.html>. 805b077aed3SPierre Pronchery 806b077aed3SPierre Pronchery=cut 807