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- // Copyright (c) 2012 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef NET_CERT_ASN1_UTIL_H_
- #define NET_CERT_ASN1_UTIL_H_
- #include "base/strings/string_piece.h"
- #include "net/base/net_export.h"
- namespace net::asn1 {
- // ExtractSubjectFromDERCert parses the DER encoded certificate in |cert| and
- // extracts the bytes of the X.501 Subject. On successful return, |subject_out|
- // is set to contain the Subject, pointing into |cert|.
- NET_EXPORT_PRIVATE bool ExtractSubjectFromDERCert(
- base::StringPiece cert,
- base::StringPiece* subject_out);
- // ExtractSPKIFromDERCert parses the DER encoded certificate in |cert| and
- // extracts the bytes of the SubjectPublicKeyInfo. On successful return,
- // |spki_out| is set to contain the SPKI, pointing into |cert|.
- NET_EXPORT_PRIVATE bool ExtractSPKIFromDERCert(base::StringPiece cert,
- base::StringPiece* spki_out);
- // ExtractSubjectPublicKeyFromSPKI parses the DER encoded SubjectPublicKeyInfo
- // in |spki| and extracts the bytes of the SubjectPublicKey. On successful
- // return, |spk_out| is set to contain the public key, pointing into |spki|.
- NET_EXPORT_PRIVATE bool ExtractSubjectPublicKeyFromSPKI(
- base::StringPiece spki,
- base::StringPiece* spk_out);
- // HasCanSignHttpExchangesDraftExtension parses the DER encoded certificate
- // in |cert| and extracts the canSignHttpExchangesDraft extension
- // (https://wicg.github.io/webpackage/draft-yasskin-http-origin-signed-responses.html)
- // if present. Returns true if the extension was present, and false if
- // the extension was not present or if there was a parsing failure.
- NET_EXPORT bool HasCanSignHttpExchangesDraftExtension(base::StringPiece cert);
- // Extracts the two (SEQUENCE) tag-length-values for the signature
- // AlgorithmIdentifiers in a DER encoded certificate. Does not use strict
- // parsing or validate the resulting AlgorithmIdentifiers.
- //
- // On success returns true, and assigns |cert_signature_algorithm_sequence| and
- // |tbs_signature_algorithm_sequence| to point into |cert|:
- //
- // * |cert_signature_algorithm_sequence| points at the TLV for
- // Certificate.signatureAlgorithm.
- //
- // * |tbs_signature_algorithm_sequence| points at the TLV for
- // TBSCertificate.algorithm.
- NET_EXPORT_PRIVATE bool ExtractSignatureAlgorithmsFromDERCert(
- base::StringPiece cert,
- base::StringPiece* cert_signature_algorithm_sequence,
- base::StringPiece* tbs_signature_algorithm_sequence);
- // Extracts the contents of the extension (if any) with OID |extension_oid| from
- // the DER-encoded, X.509 certificate in |cert|.
- //
- // Returns false on parse error or true if the parse was successful. Sets
- // |*out_extension_present| to whether or not the extension was found. If found,
- // sets |*out_extension_critical| to match the extension's "critical" flag, and
- // sets |*out_contents| to the contents of the extension (after unwrapping the
- // OCTET STRING).
- NET_EXPORT bool ExtractExtensionFromDERCert(base::StringPiece cert,
- base::StringPiece extension_oid,
- bool* out_extension_present,
- bool* out_extension_critical,
- base::StringPiece* out_contents);
- } // namespace net::asn1
- #endif // NET_CERT_ASN1_UTIL_H_
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