com.intellij.openapi.util.PasswordUtil.java Source code

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Here is the source code for com.intellij.openapi.util.PasswordUtil.java

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// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package com.intellij.openapi.util;

import com.intellij.openapi.util.text.StringUtil;
import com.intellij.util.ArrayUtilRt;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * @deprecated Credentials MUST BE stored in ({@link com.intellij.ide.passwordSafe.PasswordSafe})
 */
@Deprecated
public class PasswordUtil {
    private PasswordUtil() {
    }

    // weak encryption just to avoid plain text passwords in text files
    public static String encodePassword(@Nullable String password) {
        if (password == null) {
            return "";
        }

        StringBuilder result = new StringBuilder();
        for (int i = 0; i < password.length(); i++) {
            result.append(Integer.toHexString(password.charAt(i) ^ 0xdfaa));
        }
        return result.toString();
    }

    @NotNull
    public static String encodePassword(char @Nullable [] password) {
        if (password == null) {
            return "";
        }

        StringBuilder result = new StringBuilder();
        for (char c : password) {
            result.append(Integer.toHexString(c ^ 0xdfaa));
        }
        return result.toString();
    }

    public static String decodePassword(@Nullable String password) throws NumberFormatException {
        return password == null ? "" : new String(decodePasswordAsCharArray(password));
    }

    public static char @NotNull [] decodePasswordAsCharArray(@Nullable String password)
            throws NumberFormatException {
        if (StringUtil.isEmpty(password)) {
            return ArrayUtilRt.EMPTY_CHAR_ARRAY;
        }

        char[] result = new char[password.length() / 4];
        for (int i = 0, j = 0; i < password.length(); i += 4, j++) {
            int c = Integer.parseInt(password.substring(i, i + 4), 16);
            c ^= 0xdfaa;
            result[j] = new Character((char) c).charValue();
        }
        return result;
    }
}