com.tencent.kona.crypto

Class CryptoUtils

java.lang.Object

com.tencent.kona.crypto.CryptoUtils

public final class CryptoUtils
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static int	bytes4ToInt(byte[] bytes4)
static int	bytes4ToInt(byte[] bytes4, int offset)
static void	checkKey(java.math.BigInteger key)
static void	checkKey(byte[] key)
static void	checkKey(java.security.spec.ECPoint pubKey)
static int	ciphertextLen(int plaintextLen)
static int	circularLeftShift(int n, int bits)
static byte[]	clone(byte[] data)
static byte[]	concat(byte[] data1, byte[] data2)
static byte[]	concat(byte[] data1, int data1Offset, int data1Length, byte[] data2, int data2Offset, int data2Length)
static byte[]	copy(byte[] data, int offset, int length)
static byte[]	intsToBytes(int[] ints)
static void	intsToBytes(int[] ints, byte[] dest)
static void	intsToBytes(int[] ints, int offset, byte[] dest, int destOffset, int length)
static byte[]	intToBytes32(java.math.BigInteger value)
static void	intToBytes32(java.math.BigInteger value, byte[] dest)
static void	intToBytes32(java.math.BigInteger value, byte[] dest, int offset)
static byte[]	intToBytes4(int n)
static void	intToBytes4(int n, byte[] dest)
static void	intToBytes4(int n, byte[] dest, int offset)
static boolean	isAndroid()
static boolean	isJdk11()
static boolean	isJdk17()
static boolean	isJdk8()
static byte[]	priKey(java.math.BigInteger priKeyValue)
static java.lang.Boolean	privilegedGetBoolProperty(java.lang.String key)
static java.lang.Boolean	privilegedGetBoolProperty(java.lang.String key, java.lang.String def)
static java.lang.String	privilegedGetProperty(java.lang.String key)
static java.lang.String	privilegedGetProperty(java.lang.String key, java.lang.String def)
static byte[]	pubKey(java.security.spec.ECPoint pubKeyPoint)
static java.security.spec.ECPoint	pubKeyPoint(byte[] pubKey)
static void	reset(byte[] bytes)
static void	reset(byte[] bytes, int offset, int length)
static java.math.BigInteger	toBigInt(byte[] value)
static java.math.BigInteger	toBigInt(byte[] value, int offset, int length)
static java.math.BigInteger	toBigInt(java.lang.String hexValue)
static byte[]	toByteArrayLE(java.math.BigInteger value)
static byte[]	toBytes(java.lang.String hex)
static java.lang.String	toHex(byte[] bytes)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

privilegedGetProperty

public static java.lang.String privilegedGetProperty(java.lang.String key,
                                                     java.lang.String def)

privilegedGetProperty

public static java.lang.String privilegedGetProperty(java.lang.String key)

privilegedGetBoolProperty

public static java.lang.Boolean privilegedGetBoolProperty(java.lang.String key,
                                                          java.lang.String def)

privilegedGetBoolProperty

public static java.lang.Boolean privilegedGetBoolProperty(java.lang.String key)

isJdk8

public static boolean isJdk8()

isJdk11

public static boolean isJdk11()

isJdk17

public static boolean isJdk17()

isAndroid

public static boolean isAndroid()

toHex

public static java.lang.String toHex(byte[] bytes)

toBytes

public static byte[] toBytes(java.lang.String hex)

toBigInt

public static java.math.BigInteger toBigInt(byte[] value,
                                            int offset,
                                            int length)

toBigInt

public static java.math.BigInteger toBigInt(byte[] value)

toBigInt

public static java.math.BigInteger toBigInt(java.lang.String hexValue)

circularLeftShift

public static int circularLeftShift(int n,
                                    int bits)

toByteArrayLE

public static byte[] toByteArrayLE(java.math.BigInteger value)

bytes4ToInt

public static int bytes4ToInt(byte[] bytes4,
                              int offset)

bytes4ToInt

public static int bytes4ToInt(byte[] bytes4)

intToBytes4

public static void intToBytes4(int n,
                               byte[] dest,
                               int offset)

intToBytes4

public static void intToBytes4(int n,
                               byte[] dest)

intToBytes4

public static byte[] intToBytes4(int n)

intsToBytes

public static void intsToBytes(int[] ints,
                               int offset,
                               byte[] dest,
                               int destOffset,
                               int length)

intsToBytes

public static void intsToBytes(int[] ints,
                               byte[] dest)

intsToBytes

public static byte[] intsToBytes(int[] ints)

intToBytes32

public static void intToBytes32(java.math.BigInteger value,
                                byte[] dest,
                                int offset)

intToBytes32

public static void intToBytes32(java.math.BigInteger value,
                                byte[] dest)

intToBytes32

public static byte[] intToBytes32(java.math.BigInteger value)

copy

public static byte[] copy(byte[] data,
                          int offset,
                          int length)

clone

public static byte[] clone(byte[] data)

concat

public static byte[] concat(byte[] data1,
                            int data1Offset,
                            int data1Length,
                            byte[] data2,
                            int data2Offset,
                            int data2Length)

concat

public static byte[] concat(byte[] data1,
                            byte[] data2)

reset

public static void reset(byte[] bytes,
                         int offset,
                         int length)

reset

public static void reset(byte[] bytes)

ciphertextLen

public static int ciphertextLen(int plaintextLen)

checkKey

public static void checkKey(byte[] key)

checkKey

public static void checkKey(java.math.BigInteger key)

checkKey

public static void checkKey(java.security.spec.ECPoint pubKey)

pubKeyPoint

public static java.security.spec.ECPoint pubKeyPoint(byte[] pubKey)

pubKey

public static byte[] pubKey(java.security.spec.ECPoint pubKeyPoint)

priKey

public static byte[] priKey(java.math.BigInteger priKeyValue)