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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 CHROME_BROWSER_AUTOFILL_PASSWORD_GENERATOR_H_
#define CHROME_BROWSER_AUTOFILL_PASSWORD_GENERATOR_H_
#include <string>
#include "base/basictypes.h"
#include "base/gtest_prod_util.h"
namespace autofill {
// Class to generate random passwords. Currently we just use a generic algorithm
// for all sites, but eventually we can incorporate additional information to
// determine passwords that are likely to be accepted (i.e. use pattern field,
// previous generated passwords, crowdsourcing, etc.)
class PasswordGenerator {
public:
// |max_length| is used as a hint for the generated password's length.
explicit PasswordGenerator(size_t max_length);
~PasswordGenerator();
// Returns a random password such that:
// (1) Each character is guaranteed to be a non-whitespace printable ASCII
// character.
// (2) The generated password will contain AT LEAST one upper case letter, one
// lower case letter, one digit, and EXACTLY one other symbol.
// (3) The password length will be equal to |password_length_| (see comment
// for the constructor).
// Not thread safe.
std::string Generate() const;
private:
// Unit test also need to access |kDefaultPasswordLength|.
static const size_t kDefaultPasswordLength;
FRIEND_TEST_ALL_PREFIXES(PasswordGeneratorTest, PasswordLength);
// The length of the generated password.
const size_t password_length_;
DISALLOW_COPY_AND_ASSIGN(PasswordGenerator);
};
} // namespace autofill
#endif // CHROME_BROWSER_AUTOFILL_PASSWORD_GENERATOR_H_
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