org.polkadot.utils

Class UtilsCrypto

java.lang.Object

org.polkadot.utils.UtilsCrypto

public class UtilsCrypto
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
UtilsCrypto()

Method Summary

Modifier and Type	Method and Description
static byte[]	blake2AsU8a(byte[] data)
static byte[]	blake2AsU8a(byte[] data, int bitLength)
static byte[]	blake2AsU8a(byte[] data, int bitLength, byte[] key) Creates a blake2b u8a from the input.
static void	main(java.lang.String[] args)
static byte[]	randomAsU8a()
static byte[]	randomAsU8a(int length) Creates a Uint8Array filled with random bytes.
static java.math.BigInteger	xxhash64AsBn(byte[] data, long seed) Creates a xxhash BN from the input.
static java.lang.String	xxhash64AsRaw(byte[] data, long seed) Creates a xxhash non-prefixed hex from the input.
static long	xxhash64AsValue(byte[] data, long seed) Creates a hex number from the input.
static byte[]	xxhashAsU8a(byte[] data) Creates a xxhash64 u8a from the input.
static byte[]	xxhashAsU8a(byte[] data, int bitLength)

Methods inherited from class java.lang.Object

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

Constructor Detail

UtilsCrypto

public UtilsCrypto()

Method Detail

blake2AsU8a

public static byte[] blake2AsU8a(byte[] data,
                                 int bitLength,
                                 byte[] key)

Creates a blake2b u8a from the input. From a Uint8Array input, create the blake2b and return the result as a u8a with the specified bitLength. example

blake2AsU8a("abc"); // => [0xba, 0x80, 0xa53, 0xf98, 0x1c, 0x4d, 0x0d]

blake2AsU8a

public static byte[] blake2AsU8a(byte[] data)

blake2AsU8a

public static byte[] blake2AsU8a(byte[] data,
                                 int bitLength)

xxhashAsU8a

public static byte[] xxhashAsU8a(byte[] data)

Creates a xxhash64 u8a from the input. From either a string, Uint8Array or a Buffer input, create the xxhash64 and return the result as a Uint8Array with the specified bitLength. example

xxhashAsU8a("abc"); // => 0x44bc2cf5ad770999

xxhashAsU8a

public static byte[] xxhashAsU8a(byte[] data,
                                 int bitLength)

xxhash64AsBn

public static java.math.BigInteger xxhash64AsBn(byte[] data,
                                                long seed)

Creates a xxhash BN from the input. From either a string, Uint8Array or a Buffer input, create the xxhash and return the result as a BN. example

xxhash64AsBn("abcd", 0xabcd)); // => new BN(0xe29f70f8b8c96df7)

xxhash64AsRaw

public static java.lang.String xxhash64AsRaw(byte[] data,
                                             long seed)

Creates a xxhash non-prefixed hex from the input. From either a string, Uint8Array or a Buffer input, create the xxhash and return the result as a non-prefixed hex string. example

xxhash64AsRaw("abcd", 0xabcd)); // => e29f70f8b8c96df7

xxhash64AsValue

public static long xxhash64AsValue(byte[] data,
                                   long seed)

Creates a hex number from the input. From either a string, Uint8Array or a Buffer input, create the xxhash and return the result as a hex number example

xxhash64AsValue("abcd", 0xabcd)); // => e29f70f8b8c96df7

randomAsU8a

public static byte[] randomAsU8a(int length)

Creates a Uint8Array filled with random bytes. Returns a Uint8Array with the specified (optional) length filled with random bytes. example

randomAsU8a(); // => Uint8Array([...])

randomAsU8a

public static byte[] randomAsU8a()

main

public static void main(java.lang.String[] args)