1 =pod 2 3 =head1 NAME 4 5 OSSL_ESS_signing_cert_new_init, 6 OSSL_ESS_signing_cert_v2_new_init, 7 OSSL_ESS_check_signing_certs 8 - Enhanced Security Services (ESS) functions 9 10 =head1 SYNOPSIS 11 12 #include <openssl/ess.h> 13 14 ESS_SIGNING_CERT *OSSL_ESS_signing_cert_new_init(const X509 *signcert, 15 const STACK_OF(X509) *certs, 16 int set_issuer_serial); 17 ESS_SIGNING_CERT_V2 *OSSL_ESS_signing_cert_v2_new_init(const EVP_MD *hash_alg, 18 const X509 *signcert, 19 const 20 STACK_OF(X509) *certs, 21 int set_issuer_serial); 22 int OSSL_ESS_check_signing_certs(const ESS_SIGNING_CERT *ss, 23 const ESS_SIGNING_CERT_V2 *ssv2, 24 const STACK_OF(X509) *chain, 25 int require_signing_cert); 26 27 =head1 DESCRIPTION 28 29 OSSL_ESS_signing_cert_new_init() generates a new B<ESS_SIGNING_CERT> structure 30 referencing the given I<signcert> and any given further I<certs> 31 using their SHA-1 fingerprints. 32 If I<set_issuer_serial> is nonzero then also the issuer and serial number 33 of I<signcert> are included in the B<ESS_CERT_ID> as the B<issuerSerial> field. 34 For all members of I<certs> the B<issuerSerial> field is always included. 35 36 OSSL_ESS_signing_cert_v2_new_init() is the same as 37 OSSL_ESS_signing_cert_new_init() except that it uses the given I<hash_alg> and 38 generates a B<ESS_SIGNING_CERT_V2> structure with B<ESS_CERT_ID_V2> elements. 39 40 OSSL_ESS_check_signing_certs() checks if the validation chain I<chain> contains 41 the certificates required by the identifiers given in I<ss> and/or I<ssv2>. 42 If I<require_signing_cert> is nonzero, I<ss> or I<ssv2> must not be NULL. 43 If both I<ss> and I<ssv2> are not NULL, they are evaluated independently. 44 The list of certificate identifiers in I<ss> is of type B<ESS_CERT_ID>, 45 while the list contained in I<ssv2> is of type B<ESS_CERT_ID_V2>. 46 As far as these lists are present, they must be nonempty. 47 The certificate identified by their first entry must be the first element of 48 I<chain>, i.e. the signer certificate. 49 Any further certificates referenced in the list must also be found in I<chain>. 50 The matching is done using the given certificate hash algorithm and value. 51 In addition to the checks required by RFCs 2624 and 5035, 52 if the B<issuerSerial> field is included in an B<ESSCertID> or B<ESSCertIDv2> 53 it must match the certificate issuer and serial number attributes. 54 55 =head1 NOTES 56 57 ESS has been defined in RFC 2634, which has been updated in RFC 5035 58 (ESS version 2) to support hash algorithms other than SHA-1. 59 This is used for TSP (RFC 3161) and CAdES-BES (informational RFC 5126). 60 61 =head1 RETURN VALUES 62 63 OSSL_ESS_signing_cert_new_init() and OSSL_ESS_signing_cert_v2_new_init() 64 return a pointer to the new structure or NULL on malloc failure. 65 66 OSSL_ESS_check_signing_certs() returns 1 on success, 67 0 if a required certificate cannot be found, -1 on other error. 68 69 =head1 SEE ALSO 70 71 L<TS_VERIFY_CTX_set_certs(3)>, 72 L<CMS_verify(3)> 73 74 =head1 HISTORY 75 76 OSSL_ESS_signing_cert_new_init(), OSSL_ESS_signing_cert_v2_new_init(), and 77 OSSL_ESS_check_signing_certs() were added in OpenSSL 3.0. 78 79 =head1 COPYRIGHT 80 81 Copyright 2021-2022 The OpenSSL Project Authors. All Rights Reserved. 82 83 Licensed under the Apache License 2.0 (the "License"). You may not use 84 this file except in compliance with the License. You can obtain a copy 85 in the file LICENSE in the source distribution or at 86 L<https://www.openssl.org/source/license.html>. 87 88 =cut 89
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