Mercurial > cgi-bin > hgweb.cgi > PassMan

annotate src/main/kotlin/name/blackcap/passman/Hashing.kt @ 4:02b101422726

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author David Barts <n5jrn@me.com>
date Sun, 11 Sep 2022 20:44:59 -0700
parents a6cfdffcaa94
children 698c4a3d758d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package name.blackcap.passman
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2
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3 import java.nio.ByteBuffer
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4 import java.nio.ByteOrder
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5 import java.nio.CharBuffer
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6 import java.nio.charset.Charset
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7 import java.nio.charset.StandardCharsets
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8 import java.security.MessageDigest
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9
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10 object Hashing {
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11 private const val HASHING_ALGORITHM = "MD5"
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12 private val CHARSET: Charset = StandardCharsets.UTF_8
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13
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14 fun hash(bytes: ByteBuffer): Long {
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15 val md = MessageDigest.getInstance(HASHING_ALGORITHM)
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16 bytes.rewind()
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17 md.update(bytes)
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18 return toLong(md.digest())
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19 }
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20
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21 fun hash(bytes: ByteArray): Long =
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22 hash(ByteBuffer.wrap(bytes))
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23
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24 fun hash(chars: CharArray): Long =
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25 hash(CHARSET.encode(CharBuffer.wrap(chars)))
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27 fun hash(string: String): Long =
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28 hash(CHARSET.encode(string))
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29
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30 private fun toLong(hash: ByteArray): Long = ByteBuffer.wrap(hash).run {
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31 order(ByteOrder.LITTLE_ENDIAN)
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32 getLong(hash.size - 8)
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33 }
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34 }