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package net.sourceforge.plantuml.argon2;
import static java.nio.charset.StandardCharsets.UTF_8;
import static net.sourceforge.plantuml.argon2.Constants.Defaults.LANES_DEF;
import static net.sourceforge.plantuml.argon2.Constants.Defaults.LOG_M_COST_DEF;
import static net.sourceforge.plantuml.argon2.Constants.Defaults.OUTLEN_DEF;
import static net.sourceforge.plantuml.argon2.Constants.Defaults.TYPE_DEF;
import static net.sourceforge.plantuml.argon2.Constants.Defaults.T_COST_DEF;
import static net.sourceforge.plantuml.argon2.Constants.Defaults.VERSION_DEF;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.util.Arrays;
import net.sourceforge.plantuml.argon2.algorithm.FillMemory;
import net.sourceforge.plantuml.argon2.algorithm.Finalize;
import net.sourceforge.plantuml.argon2.algorithm.Initialize;
import net.sourceforge.plantuml.argon2.model.Argon2Type;
import net.sourceforge.plantuml.argon2.model.Instance;
public class Argon2 {
// ::remove folder when __CORE__
// ::remove folder when __HAXE__
private byte[] output;
private int outputLength; // -l N
private double duration;
private byte[] password;
private byte[] salt;
private byte[] secret;
private byte[] additional;
private int iterations; // -t N
private int memory; // -m N
private int lanes; // -p N
private int version; // -v (10/13)
private Argon2Type type;
private boolean clearMemory = true;
private boolean encodedOnly = false;
private boolean rawOnly = false;
Argon2() {
this.lanes = LANES_DEF;
this.outputLength = OUTLEN_DEF;
this.memory = 1 << LOG_M_COST_DEF;
this.iterations = T_COST_DEF;
this.version = VERSION_DEF;
this.type = TYPE_DEF;
}
private static byte[] toByteArray(char[] chars, Charset charset) {
assert chars != null;
CharBuffer charBuffer = CharBuffer.wrap(chars);
ByteBuffer byteBuffer = charset.encode(charBuffer);
byte[] bytes = Arrays.copyOfRange(byteBuffer.array(), byteBuffer.position(), byteBuffer.limit());
Arrays.fill(byteBuffer.array(), (byte) 0);
return bytes;
}
public void hashNow() {
try {
Validation.validateInput(this);
long start = System.nanoTime();
Instance instance = new Instance(this);
Initialize.initialize(instance, this);
FillMemory.fillMemoryBlocks(instance);
Finalize.finalize(instance, this);
duration = (System.nanoTime() - start) / 1000000000.0;
} finally {
clear();
}
}
public void clear() {
if (password != null)
Arrays.fill(password, 0, password.length - 1, (byte) 0);
if (salt != null)
Arrays.fill(salt, 0, salt.length - 1, (byte) 0);
if (secret != null)
Arrays.fill(secret, 0, secret.length - 1, (byte) 0);
if (additional != null)
Arrays.fill(additional, 0, additional.length - 1, (byte) 0);
}
void printSummary() {
if (encodedOnly)
System.out.println(getEncoded());
else if (rawOnly)
System.out.println(getOutputString());
else {
System.out.println("Type:\t\t" + type);
System.out.println("Iterations:\t" + iterations);
System.out.println("Memory:\t\t" + memory + " KiB");
System.out.println("Parallelism:\t" + lanes);
System.out.println("Hash:\t\t" + getOutputString());
System.out.println("Encoded:\t " + getEncoded());
System.out.println(duration + " seconds");
}
}
public Argon2 setMemoryInKiB(int memory) {
this.memory = memory;
return this;
}
public Argon2 setParallelism(int parallelism) {
this.lanes = parallelism;
return this;
}
public Argon2 setPassword(char[] password) {
return setPassword(toByteArray(password, UTF_8));
}
public Argon2 setSalt(String salt) {
return setSalt(salt.getBytes(UTF_8));
}
public byte[] getOutput() {
return output;
}
public void setOutput(byte[] finalResult) {
this.output = finalResult;
}
public String getOutputString() {
return Util.bytesToHexString(output);
}
public int getOutputLength() {
return outputLength;
}
public Argon2 setOutputLength(int outputLength) {
this.outputLength = outputLength;
return this;
}
public byte[] getPassword() {
return password;
}
public Argon2 setPassword(byte[] password) {
this.password = password;
return this;
}
public int getPasswordLength() {
return password.length;
}
public byte[] getSalt() {
return salt;
}
public Argon2 setSalt(byte[] salt) {
this.salt = salt;
return this;
}
public int getSaltLength() {
return salt.length;
}
public byte[] getSecret() {
return secret;
}
public Argon2 setSecret(byte[] secret) {
this.secret = secret;
return this;
}
public int getSecretLength() {
return secret != null ? secret.length : 0;
}
public byte[] getAdditional() {
return additional;
}
public Argon2 setAdditional(byte[] additional) {
this.additional = additional;
return this;
}
public int getAdditionalLength() {
return additional != null ? additional.length : 0;
}
public int getIterations() {
return iterations;
}
public Argon2 setIterations(int iterations) {
this.iterations = iterations;
return this;
}
public int getMemory() {
return memory;
}
public Argon2 setMemory(int memory) {
this.memory = 1 << memory;
return this;
}
public int getLanes() {
return lanes;
}
public int getVersion() {
return version;
}
public Argon2 setVersion(int version) {
this.version = version;
return this;
}
public Argon2Type getType() {
return type;
}
public Argon2 setType(Argon2Type type) {
this.type = type;
return this;
}
public boolean isClearMemory() {
return clearMemory;
}
public void setClearMemory(boolean clearMemory) {
this.clearMemory = clearMemory;
}
public Charset getCharset() {
return UTF_8;
}
public void setEncodedOnly(boolean encodedOnly) {
this.encodedOnly = encodedOnly;
}
public void setRawOnly(boolean rawOnly) {
this.rawOnly = rawOnly;
}
public String getEncoded() {
return ""; // TODO
}
}
