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87 lines
3.8 KiB
C++
87 lines
3.8 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_CERT_ASN1_UTIL_H_
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#define NET_CERT_ASN1_UTIL_H_
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#include <vector>
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#include "base/strings/string_piece.h"
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#include "net/base/net_export.h"
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namespace net {
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namespace asn1 {
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// ExtractSubjectFromDERCert parses the DER encoded certificate in |cert| and
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// extracts the bytes of the X.501 Subject. On successful return, |subject_out|
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// is set to contain the Subject, pointing into |cert|.
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NET_EXPORT_PRIVATE bool ExtractSubjectFromDERCert(
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base::StringPiece cert,
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base::StringPiece* subject_out);
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// ExtractSPKIFromDERCert parses the DER encoded certificate in |cert| and
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// extracts the bytes of the SubjectPublicKeyInfo. On successful return,
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// |spki_out| is set to contain the SPKI, pointing into |cert|.
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NET_EXPORT_PRIVATE bool ExtractSPKIFromDERCert(base::StringPiece cert,
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base::StringPiece* spki_out);
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// ExtractSubjectPublicKeyFromSPKI parses the DER encoded SubjectPublicKeyInfo
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// in |spki| and extracts the bytes of the SubjectPublicKey. On successful
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// return, |spk_out| is set to contain the public key, pointing into |spki|.
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NET_EXPORT_PRIVATE bool ExtractSubjectPublicKeyFromSPKI(
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base::StringPiece spki,
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base::StringPiece* spk_out);
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// HasTLSFeatureExtension parses the DER encoded certificate in |cert|
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// and extracts the TLS feature extension
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// (https://tools.ietf.org/html/rfc7633) if present. Returns true if the
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// TLS feature extension was present, and false if the extension was not
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// present or if there was a parsing failure.
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NET_EXPORT_PRIVATE bool HasTLSFeatureExtension(base::StringPiece cert);
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// HasCanSignHttpExchangesDraftExtension parses the DER encoded certificate
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// in |cert| and extracts the canSignHttpExchangesDraft extension
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// (https://wicg.github.io/webpackage/draft-yasskin-http-origin-signed-responses.html)
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// if present. Returns true if the extension was present, and false if
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// the extension was not present or if there was a parsing failure.
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NET_EXPORT bool HasCanSignHttpExchangesDraftExtension(base::StringPiece cert);
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// Extracts the two (SEQUENCE) tag-length-values for the signature
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// AlgorithmIdentifiers in a DER encoded certificate. Does not use strict
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// parsing or validate the resulting AlgorithmIdentifiers.
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//
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// On success returns true, and assigns |cert_signature_algorithm_sequence| and
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// |tbs_signature_algorithm_sequence| to point into |cert|:
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//
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// * |cert_signature_algorithm_sequence| points at the TLV for
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// Certificate.signatureAlgorithm.
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//
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// * |tbs_signature_algorithm_sequence| points at the TLV for
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// TBSCertificate.algorithm.
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NET_EXPORT_PRIVATE bool ExtractSignatureAlgorithmsFromDERCert(
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base::StringPiece cert,
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base::StringPiece* cert_signature_algorithm_sequence,
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base::StringPiece* tbs_signature_algorithm_sequence);
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// Extracts the contents of the extension (if any) with OID |extension_oid| from
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// the DER-encoded, X.509 certificate in |cert|.
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//
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// Returns false on parse error or true if the parse was successful. Sets
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// |*out_extension_present| to whether or not the extension was found. If found,
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// sets |*out_extension_critical| to match the extension's "critical" flag, and
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// sets |*out_contents| to the contents of the extension (after unwrapping the
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// OCTET STRING).
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NET_EXPORT bool ExtractExtensionFromDERCert(base::StringPiece cert,
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base::StringPiece extension_oid,
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bool* out_extension_present,
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bool* out_extension_critical,
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base::StringPiece* out_contents);
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} // namespace asn1
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} // namespace net
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#endif // NET_CERT_ASN1_UTIL_H_
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