Package org.web3j.crypto

Class Hash

java.lang.Object
org.web3j.crypto.Hash
public class Hash extends Object
Cryptographic hash functions.

  • Method Summary

    Modifier and Type
    Method
    Description
    static byte[]
    blake2b256(byte[] input)
    Blake2-256 hash function.
    static byte[]
    hash(byte[] input, String algorithm)
    Generates a digest for the given input.
    static byte[]
    hmacSha512(byte[] key, byte[] input)
     
    static byte[]
    sha256(byte[] input)
    Generates SHA-256 digest for the given input.
    static byte[]
    sha256hash160(byte[] input)
     
    static byte[]
    sha3(byte[] input)
    Keccak-256 hash function.
    static byte[]
    sha3(byte[] input, int offset, int length)
    Keccak-256 hash function.
    static String
    sha3(String hexInput)
    Keccak-256 hash function.
    static String
    sha3String(String utf8String)
    Keccak-256 hash function that operates on a UTF-8 encoded String.

    Methods inherited from class java.lang.Object

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

  • Method Details

    • hash

      public static byte[] hash(byte[] input, String algorithm)
      Generates a digest for the given input.
      Parameters:
      input - The input to digest
      algorithm - The hash algorithm to use
      Returns:
      The hash value for the given input
      Throws:
      RuntimeException - If we couldn't find any provider for the given algorithm

    • sha3

      public static String sha3(String hexInput)
      Keccak-256 hash function.
      Parameters:
      hexInput - hex encoded input data with optional 0x prefix
      Returns:
      hash value as hex encoded string

    • sha3

      public static byte[] sha3(byte[] input, int offset, int length)
      Keccak-256 hash function.
      Parameters:
      input - binary encoded input data
      offset - of start of data
      length - of data
      Returns:
      hash value

    • sha3

      public static byte[] sha3(byte[] input)
      Keccak-256 hash function.
      Parameters:
      input - binary encoded input data
      Returns:
      hash value

    • sha3String

      public static String sha3String(String utf8String)
      Keccak-256 hash function that operates on a UTF-8 encoded String.
      Parameters:
      utf8String - UTF-8 encoded string
      Returns:
      hash value as hex encoded string

    • sha256

      public static byte[] sha256(byte[] input)
      Generates SHA-256 digest for the given input.
      Parameters:
      input - The input to digest
      Returns:
      The hash value for the given input
      Throws:
      RuntimeException - If we couldn't find any SHA-256 provider

    • hmacSha512

      public static byte[] hmacSha512(byte[] key, byte[] input)

    • sha256hash160

      public static byte[] sha256hash160(byte[] input)

    • blake2b256

      public static byte[] blake2b256(byte[] input)
      Blake2-256 hash function.
      Parameters:
      input - binary encoded input data
      Returns:
      hash value