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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BSSL_PKI_VERIFY_SIGNED_DATA_H_
#define BSSL_PKI_VERIFY_SIGNED_DATA_H_
#include "fillins/openssl_util.h"
#include "fillins/openssl_util.h"
#include "signature_algorithm.h"
#include "signature_verify_cache.h"
#include <openssl/evp.h>
namespace bssl {
namespace der {
class BitString;
class Input;
} // namespace der
// Verifies that |signature_value| is a valid signature of |signed_data| using
// the algorithm |algorithm| and the public key |public_key|.
//
// |algorithm| - The parsed AlgorithmIdentifier
// |signed_data| - The blob of data to verify
// |signature_value| - The BIT STRING for the signature's value
// |public_key| - The parsed (non-null) public key.
//
// Returns true if verification was successful.
[[nodiscard]] OPENSSL_EXPORT bool VerifySignedData(
SignatureAlgorithm algorithm,
const der::Input& signed_data,
const der::BitString& signature_value,
EVP_PKEY* public_key,
SignatureVerifyCache* cache);
// Same as above overload, only the public key is inputted as an SPKI and will
// be parsed internally.
[[nodiscard]] OPENSSL_EXPORT bool VerifySignedData(
SignatureAlgorithm algorithm,
const der::Input& signed_data,
const der::BitString& signature_value,
const der::Input& public_key_spki,
SignatureVerifyCache* cache);
[[nodiscard]] OPENSSL_EXPORT bool ParsePublicKey(
const der::Input& public_key_spki,
bssl::UniquePtr<EVP_PKEY>* public_key);
} // namespace net
#endif // BSSL_PKI_VERIFY_SIGNED_DATA_H_
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