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Diffstat (limited to 'openssl-1.1.0h/doc/crypto/X509V3_get_d2i.pod')
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1 files changed, 241 insertions, 0 deletions
diff --git a/openssl-1.1.0h/doc/crypto/X509V3_get_d2i.pod b/openssl-1.1.0h/doc/crypto/X509V3_get_d2i.pod new file mode 100644 index 0000000..ac560b2 --- /dev/null +++ b/openssl-1.1.0h/doc/crypto/X509V3_get_d2i.pod @@ -0,0 +1,241 @@ +=pod + +=head1 NAME + +X509_get0_extensions, X509_CRL_get0_extensions, X509_REVOKED_get0_extensions, +X509V3_get_d2i, X509V3_add1_i2d, X509V3_EXT_d2i, X509V3_EXT_i2d, +X509_get_ext_d2i, X509_add1_ext_i2d, X509_CRL_get_ext_d2i, +X509_CRL_add1_ext_i2d, X509_REVOKED_get_ext_d2i, +X509_REVOKED_add1_ext_i2d - X509 extension decode and encode functions + +=head1 SYNOPSIS + + #include <openssl/x509v3.h> + + void *X509V3_get_d2i(const STACK_OF(X509_EXTENSION) *x, int nid, int *crit, + int *idx); + int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value, + int crit, unsigned long flags); + + void *X509V3_EXT_d2i(X509_EXTENSION *ext); + X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext); + + void *X509_get_ext_d2i(const X509 *x, int nid, int *crit, int *idx); + int X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit, + unsigned long flags); + + void *X509_CRL_get_ext_d2i(const X509_CRL *crl, int nid, int *crit, int *idx); + int X509_CRL_add1_ext_i2d(X509_CRL *crl, int nid, void *value, int crit, + unsigned long flags); + + void *X509_REVOKED_get_ext_d2i(const X509_REVOKED *r, int nid, int *crit, int *idx); + int X509_REVOKED_add1_ext_i2d(X509_REVOKED *r, int nid, void *value, int crit, + unsigned long flags); + + const STACK_OF(X509_EXTENSION) *X509_get0_extensions(const X509 *x); + const STACK_OF(X509_EXTENSION) *X509_CRL_get0_extensions(const X509_CRL *crl); + const STACK_OF(X509_EXTENSION) *X509_REVOKED_get0_extensions(const X509_REVOKED *r); + +=head1 DESCRIPTION + +X509V3_get_ext_d2i() looks for an extension with OID B<nid> in the extensions +B<x> and, if found, decodes it. If B<idx> is B<NULL> then only one +occurrence of an extension is permissible otherwise the first extension after +index B<*idx> is returned and B<*idx> updated to the location of the extension. +If B<crit> is not B<NULL> then B<*crit> is set to a status value: -2 if the +extension occurs multiple times (this is only returned if B<idx> is B<NULL>), +-1 if the extension could not be found, 0 if the extension is found and is +not critical and 1 if critical. A pointer to an extension specific structure +or B<NULL> is returned. + +X509V3_add1_i2d() adds extension B<value> to STACK B<*x> (allocating a new +STACK if necessary) using OID B<nid> and criticality B<crit> according +to B<flags>. + +X509V3_EXT_d2i() attempts to decode the ASN.1 data contained in extension +B<ext> and returns a pointer to an extension specific structure or B<NULL> +if the extension could not be decoded (invalid syntax or not supported). + +X509V3_EXT_i2d() encodes the extension specific structure B<ext> +with OID B<ext_nid> and criticality B<crit>. + +X509_get_ext_d2i() and X509_add1_ext_i2d() operate on the extensions of +certificate B<x>, they are otherwise identical to X509V3_get_d2i() and +X509V3_add_i2d(). + +X509_CRL_get_ext_d2i() and X509_CRL_add1_ext_i2d() operate on the extensions +of CRL B<crl>, they are otherwise identical to X509V3_get_d2i() and +X509V3_add_i2d(). + +X509_REVOKED_get_ext_d2i() and X509_REVOKED_add1_ext_i2d() operate on the +extensions of B<X509_REVOKED> structure B<r> (i.e for CRL entry extensions), +they are otherwise identical to X509V3_get_d2i() and X509V3_add_i2d(). + +X509_get0_extensions(), X509_CRL_get0_extensions() and +X509_REVOKED_get0_extensions() return a stack of all the extensions +of a certificate a CRL or a CRL entry respectively. + +=head1 NOTES + +In almost all cases an extension can occur at most once and multiple +occurrences is an error. Therefore the B<idx> parameter is usually B<NULL>. + +The B<flags> parameter may be one of the following values. + +B<X509V3_ADD_DEFAULT> appends a new extension only if the extension does +not already exist. An error is returned if the extension does already +exist. + +B<X509V3_ADD_APPEND> appends a new extension, ignoring whether the extension +already exists. + +B<X509V3_ADD_REPLACE> replaces an extension if it exists otherwise appends +a new extension. + +B<X509V3_ADD_REPLACE_EXISTING> replaces an existing extension if it exists +otherwise returns an error. + +B<X509V3_ADD_KEEP_EXISTING> appends a new extension only if the extension does +not already exist. An error B<is not> returned if the extension does already +exist. + +B<X509V3_ADD_DELETE> extension B<nid> is deleted: no new extension is added. + +If B<X509V3_ADD_SILENT> is ored with B<flags>: any error returned will not +be added to the error queue. + +The function X509V3_get_d2i() will return B<NULL> if the extension is not +found, occurs multiple times or cannot be decoded. It is possible to +determine the precise reason by checking the value of B<*crit>. + +=head1 SUPPORTED EXTENSIONS + +The following sections contain a list of all supported extensions +including their name and NID. + +=head2 PKIX Certificate Extensions + +The following certificate extensions are defined in PKIX standards such as +RFC5280. + + Basic Constraints NID_basic_constraints + Key Usage NID_key_usage + Extended Key Usage NID_ext_key_usage + + Subject Key Identifier NID_subject_key_identifier + Authority Key Identifier NID_authority_key_identifier + + Private Key Usage Period NID_private_key_usage_period + + Subject Alternative Name NID_subject_alt_name + Issuer Alternative Name NID_issuer_alt_name + + Authority Information Access NID_info_access + Subject Information Access NID_sinfo_access + + Name Constraints NID_name_constraints + + Certificate Policies NID_certificate_policies + Policy Mappings NID_policy_mappings + Policy Constraints NID_policy_constraints + Inhibit Any Policy NID_inhibit_any_policy + + TLS Feature NID_tlsfeature + +=head2 Netscape Certificate Extensions + +The following are (largely obsolete) Netscape certificate extensions. + + Netscape Cert Type NID_netscape_cert_type + Netscape Base Url NID_netscape_base_url + Netscape Revocation Url NID_netscape_revocation_url + Netscape CA Revocation Url NID_netscape_ca_revocation_url + Netscape Renewal Url NID_netscape_renewal_url + Netscape CA Policy Url NID_netscape_ca_policy_url + Netscape SSL Server Name NID_netscape_ssl_server_name + Netscape Comment NID_netscape_comment + +=head2 Miscellaneous Certificate Extensions + + Strong Extranet ID NID_sxnet + Proxy Certificate Information NID_proxyCertInfo + +=head2 PKIX CRL Extensions + +The following are CRL extensions from PKIX standards such as RFC5280. + + CRL Number NID_crl_number + CRL Distribution Points NID_crl_distribution_points + Delta CRL Indicator NID_delta_crl + Freshest CRL NID_freshest_crl + Invalidity Date NID_invalidity_date + Issuing Distribution Point NID_issuing_distribution_point + +The following are CRL entry extensions from PKIX standards such as RFC5280. + + CRL Reason Code NID_crl_reason + Certificate Issuer NID_certificate_issuer + +=head2 OCSP Extensions + + OCSP Nonce NID_id_pkix_OCSP_Nonce + OCSP CRL ID NID_id_pkix_OCSP_CrlID + Acceptable OCSP Responses NID_id_pkix_OCSP_acceptableResponses + OCSP No Check NID_id_pkix_OCSP_noCheck + OCSP Archive Cutoff NID_id_pkix_OCSP_archiveCutoff + OCSP Service Locator NID_id_pkix_OCSP_serviceLocator + Hold Instruction Code NID_hold_instruction_code + +=head2 Certificate Transparency Extensions + +The following extensions are used by certificate transparency, RFC6962 + + CT Precertificate SCTs NID_ct_precert_scts + CT Certificate SCTs NID_ct_cert_scts + +=head1 RETURN VALUES + +X509V3_EXT_d2i() and *X509V3_get_d2i() return a pointer to an extension +specific structure of B<NULL> if an error occurs. + +X509V3_EXT_i2d() returns a pointer to an B<X509_EXTENSION> structure +or B<NULL> if an error occurs. + +X509V3_add1_i2d() returns 1 if the operation is successful and 0 if it +fails due to a non-fatal error (extension not found, already exists, +cannot be encoded) or -1 due to a fatal error such as a memory allocation +failure. + +X509_get0_extensions(), X509_CRL_get0_extensions() and +X509_REVOKED_get0_extensions() return a stack of extensions. They return +NULL if no extensions are present. + +=head1 SEE ALSO + +L<d2i_X509(3)>, +L<ERR_get_error(3)>, +L<X509_CRL_get0_by_serial(3)>, +L<X509_get0_signature(3)>, +L<X509_get_ext_d2i(3)>, +L<X509_get_extension_flags(3)>, +L<X509_get_pubkey(3)>, +L<X509_get_subject_name(3)>, +L<X509_get_version(3)>, +L<X509_NAME_add_entry_by_txt(3)>, +L<X509_NAME_ENTRY_get_object(3)>, +L<X509_NAME_get_index_by_NID(3)>, +L<X509_NAME_print_ex(3)>, +L<X509_new(3)>, +L<X509_sign(3)>, +L<X509_verify_cert(3)> + +=head1 COPYRIGHT + +Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. + +Licensed under the OpenSSL license (the "License"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file LICENSE in the source distribution or at +L<https://www.openssl.org/source/license.html>. + +=cut |