Mercurial > cgi-bin > hgweb.cgi > PassMan

comparison src/main/kotlin/name/blackcap/passman/Hashing.kt @ 0:a6cfdffcaa94

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Initial commit, incomplete but it runs sorta.
author David Barts <n5jrn@me.com>
date Sun, 11 Sep 2022 16:11:37 -0700
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children 698c4a3d758d
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-1:000000000000 0:a6cfdffcaa94
1 package name.blackcap.passman
2
3 import java.nio.ByteBuffer
4 import java.nio.ByteOrder
5 import java.nio.CharBuffer
6 import java.nio.charset.Charset
7 import java.nio.charset.StandardCharsets
8 import java.security.MessageDigest
9
10 object Hashing {
11 private const val HASHING_ALGORITHM = "MD5"
12 private val CHARSET: Charset = StandardCharsets.UTF_8
13
14 fun hash(bytes: ByteBuffer): Long {
15 val md = MessageDigest.getInstance(HASHING_ALGORITHM)
16 bytes.rewind()
17 md.update(bytes)
18 return toLong(md.digest())
19 }
20
21 fun hash(bytes: ByteArray): Long =
22 hash(ByteBuffer.wrap(bytes))
23
24 fun hash(chars: CharArray): Long =
25 hash(CHARSET.encode(CharBuffer.wrap(chars)))
26
27 fun hash(string: String): Long =
28 hash(CHARSET.encode(string))
29
30 private fun toLong(hash: ByteArray): Long = ByteBuffer.wrap(hash).run {
31 order(ByteOrder.LITTLE_ENDIAN)
32 getLong(hash.size - 8)
33 }
34 }