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A Java Class to generate SSL Certificates with KeyTool for Linux Systems (Builder Pattern)
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| import lombok.*; | |
| import java.security.KeyStore; | |
| public class KeyTool4J { | |
| @Getter private String certificateOwner = "unknown"; | |
| @Getter private String organizationalUnit = "unknown"; | |
| @Getter private String organizationName = "unknown"; | |
| @Getter private String localityName = "unknown"; | |
| @Getter private String provinceName = "unknown"; | |
| @Getter private String twoLetterCountryCode = "unknown"; | |
| @Getter private String password = ""; | |
| @Getter private String fileName = "certificate_" + System.currentTimeMillis() + ".jks"; | |
| @Getter private String alias = "self_signed_cert"; | |
| public KeyTool4J(){ | |
| } | |
| public KeyTool4J setCertificateOwner(String firstName, String lastName){ | |
| this.certificateOwner = firstName + " " + lastName; | |
| return this; | |
| } | |
| public KeyTool4J setOrganizationalUnit(String ou){ | |
| this.organizationalUnit = ou; | |
| return this; | |
| } | |
| public KeyTool4J setOrganizationName(String organizationName){ | |
| this.organizationName = organizationName; | |
| return this; | |
| } | |
| public KeyTool4J setLocalityName(String localityName){ | |
| this.localityName = localityName; | |
| return this; | |
| } | |
| public KeyTool4J setProvinceName(String provinceName){ | |
| this.provinceName = provinceName; | |
| return this; | |
| } | |
| public KeyTool4J setTwoLetterCountryCode(String tlcc){ | |
| this.twoLetterCountryCode = tlcc; | |
| return this; | |
| } | |
| public KeyTool4J setPassword(String password){ | |
| this.password = password; | |
| return this; | |
| } | |
| public KeyTool4J setFileName(String fileName){ | |
| this.fileName = fileName; | |
| return this; | |
| } | |
| public KeyTool4J setAlias(String alias){ | |
| this.alias = alias; | |
| return this; | |
| } | |
| public void build(){ | |
| unixBash(System.getProperty("user.dir"), "keytool -genkey -alias " + this.alias + " \\\n" + | |
| " -keyalg RSA -keystore " + this.fileName + " \\\n" + | |
| " -dname \"CN=" + this.certificateOwner + ", OU=" + this.organizationalUnit + ", O=" + this.organizationName + ", " + | |
| "L=" + this.localityName + ", S=" + this.provinceName + ", C=" + this.twoLetterCountryCode + "\" \\\n" + | |
| " -storepass " + this.password + " -keypass " + this.password); | |
| System.out.println("Built!"); | |
| } | |
| public String toString(){ | |
| return ""; | |
| } | |
| @SneakyThrows | |
| public static String[] unixBash(String directory, String bash) { | |
| ProcessBuilder processBuilder = new ProcessBuilder(); | |
| processBuilder.command("bash", "-c", bash); | |
| processBuilder.directory(new File(directory)); | |
| Process process = processBuilder.start(); | |
| StringBuilder stringBuilder = new StringBuilder(); | |
| BufferedReader bufferedReader; | |
| bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream())); | |
| String line; | |
| while ((line = bufferedReader.readLine()) != null) | |
| stringBuilder.append(line + "\n"); | |
| int exitCode = process.waitFor(); | |
| if (exitCode == 0) | |
| return stringBuilder.toString().split("\n"); | |
| String error; | |
| bufferedReader = new BufferedReader(new InputStreamReader(process.getErrorStream())); | |
| while ((error = bufferedReader.readLine()) != null) | |
| stringBuilder.append(error + "\n"); | |
| return stringBuilder.toString().split("\n"); | |
| } | |
| } |
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