Package org.eclipse.aether.util

Class StringDigestUtil

  • public final class StringDigestUtil
extends java.lang.Object
    A simple digester utility for Strings. Uses MessageDigest for requested algorithm. Supports one-pass or several rounds of updates, and as result emits hex encoded String.
    Since:
    1.9.0

    • Constructor Summary

      Constructors 
      Constructor Description
      StringDigestUtil​(java.lang.String alg)
      Constructs instance with given algorithm.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String digest()
      Returns the digest of all strings passed via update(String) as hex string.
      static byte[] fromHexString​(java.lang.String hexString)
      Creates a byte array out of hexadecimal representation of the specified bytes.
      static StringDigestUtil sha1()
      Helper method to create StringDigestUtil using SHA-1 digest algorithm.
      static java.lang.String sha1​(java.lang.String string)
      Helper method to calculate SHA-1 digest and hex encode it.
      static java.lang.String toHexString​(byte[] bytes)
      Creates a hexadecimal representation of the specified bytes.
      StringDigestUtil update​(java.lang.String data)
      Updates instance with passed in string.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • digest

        public java.lang.String digest()
        Returns the digest of all strings passed via update(String) as hex string. There is no state preserved and due implementation of MessageDigest.digest(), same applies here: this instance "resets" itself. Hence, the digest hex encoded string is returned only once.
        See Also:
        MessageDigest.digest()

      • sha1

        public static java.lang.String sha1​(java.lang.String string)
        Helper method to calculate SHA-1 digest and hex encode it.

      • toHexString

        public static java.lang.String toHexString​(byte[] bytes)
        Creates a hexadecimal representation of the specified bytes. Each byte is converted into a two-digit hex number and appended to the result with no separator between consecutive bytes.
        Parameters:
        bytes - the bytes to represent in hex notation, may be null
        Returns:
        the hexadecimal representation of the input or null if the input was null
        Since:
        2.0.0

      • fromHexString

        public static byte[] fromHexString​(java.lang.String hexString)
        Creates a byte array out of hexadecimal representation of the specified bytes. If input string is null, null is returned. Input value must have even length (due hex encoding = 2 chars one byte).
        Parameters:
        hexString - the hexString to convert to byte array, may be null
        Returns:
        the byte array of the input or null if the input was null
        Since:
        2.0.0