blob: 6d95b0de8a0a92a554d3c965b2f65f2153d1cfed [file] [log] [blame]
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <openssl/base.h>
#include <openssl/pki/signature_verify_cache.h>
#include "path_builder.h"
#include "signature_algorithm.h"
namespace bssl {
class CertErrors;
// SimplePathBuilderDelegate is an implementation of CertPathBuilderDelegate
// that uses some default policies:
// * RSA public keys must be >= |min_rsa_modulus_length_bits|.
// * Signature algorithm can be RSA PKCS#1, RSASSA-PSS or ECDSA
// * Digest algorithm can be SHA256, SHA348 or SHA512.
// * If the |digest_policy| was set to kAllowSha1, then SHA1 is
// additionally accepted.
// * EC named curve can be P-256, P-384, P-521.
class OPENSSL_EXPORT SimplePathBuilderDelegate
: public CertPathBuilderDelegate {
enum class DigestPolicy {
// Accepts digests of SHA256, SHA348 or SHA512
// Accepts everything that kStrong does, plus SHA1.
kMaxValue = kWeakAllowSha1
// Error emitted when a public key is rejected because it is an RSA key with a
// modulus size that is too small.
static const CertErrorId kRsaModulusTooSmall;
SimplePathBuilderDelegate(size_t min_rsa_modulus_length_bits,
DigestPolicy digest_policy);
// Accepts RSA PKCS#1, RSASSA-PSS or ECDA using any of the SHA* digests
// (including SHA1).
bool IsSignatureAlgorithmAcceptable(SignatureAlgorithm signature_algorithm,
CertErrors *errors) override;
// Requires RSA keys be >= |min_rsa_modulus_length_bits_|.
bool IsPublicKeyAcceptable(EVP_PKEY *public_key, CertErrors *errors) override;
// No-op implementation.
void CheckPathAfterVerification(const CertPathBuilder &path_builder,
CertPathBuilderResultPath *path) override;
// No-op implementation.
bool IsDeadlineExpired() override;
// No-op implementation.
SignatureVerifyCache *GetVerifyCache() override;
// No-op implementation.
bool IsDebugLogEnabled() override;
// No-op implementation.
void DebugLog(std::string_view msg) override;
// No-op implementation.
bool AcceptPreCertificates() override;
const size_t min_rsa_modulus_length_bits_;
const DigestPolicy digest_policy_;
} // namespace bssl