src/security/fcrypto/test/utils.h

// Copyright 2017 The Fuchsia 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 SRC_SECURITY_FCRYPTO_TEST_UTILS_H_
#define SRC_SECURITY_FCRYPTO_TEST_UTILS_H_

#include <zircon/status.h>
#include <zircon/types.h>

#include "src/security/fcrypto/aead.h"
#include "src/security/fcrypto/bytes.h"
#include "src/security/fcrypto/cipher.h"
#include "src/security/fcrypto/hkdf.h"
#include "src/security/fcrypto/secret.h"

namespace crypto {
namespace testing {

// Resizes |out| and sets its contents to match the given |hex| string.
zx_status_t HexToBytes(const char* hex, Bytes* out);
zx_status_t HexToSecret(const char* hex, Secret* out);

// Fills the given |key| and |iv| with as much random data as indicated by |Cipher::GetKeyLen| and
// |Cipher::GetIVLen| for the given |cipher|. |iv| may be null.
zx_status_t GenerateKeyMaterial(Cipher::Algorithm cipher, Secret* key, Bytes* iv);

// Fills the given |key|, |iv| with as much random data as indicated by |AEAD::GetKeyLen| and
//|AEAD::GetIVLen| for the given |aead|. |iv| may be null.
zx_status_t GenerateKeyMaterial(AEAD::Algorithm aead, Secret* key, Bytes* iv);

// Returns true if and only if |len| bytes starting from |off| in |buf| match |val|.
bool AllEqual(const Bytes& buf, uint8_t val, zx_off_t off, size_t len);

}  // namespace testing
}  // namespace crypto

#endif  // SRC_SECURITY_FCRYPTO_TEST_UTILS_H_