Implement streaming API
This commit is contained in:
@@ -1,78 +1,44 @@
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package com.infendro.hash.blake
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import com.infendro.bytes.bytearray.toLongArray
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import com.infendro.bytes.long.copyInto
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import com.infendro.bytes.bytearray.copyInto
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import com.infendro.bytes.longarray.copyInto
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import com.infendro.hash.HashFunction
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import com.infendro.hash.util.align
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object `Blake-512` : HashFunction {
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override val bytes: Int
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get() = 64
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class `Blake-512` : HashFunction(64, 128) {
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private val h = initial.copyOf()
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override val block: Int
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get() = 128
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private val m = LongArray(16)
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private val v = LongArray(16)
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private val initial = longArrayOf(
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+0x6a09e667f3bcc908L, -0x4498517a7b3558c5L,
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+0x3c6ef372fe94f82bL, -0x5ab00ac5a0e2c90fL,
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+0x510e527fade682d1L, -0x64fa9773d4c193e1L,
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+0x1f83d9abfb41bd6bL, +0x5be0cd19137e2179L,
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)
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override fun reset() {
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super.reset()
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initial.copyInto(h)
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}
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private val c = longArrayOf(
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+0x243f6a8885a308d3L, +0x13198a2e03707344L,
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-0x5bf6c7ddd660ce30L, +0x082efa98ec4e6c89L,
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+0x452821e638d01377L, -0x41ab9930cb16f394L,
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-0x3f53d6483683af23L, +0x3f84d5b5b5470917L,
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-0x6de92a26768604e5L, -0x2ecef45967204a54L,
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+0x2ffd72dbd01adfb7L, -0x471e501295d9816aL,
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-0x45836fba0ed38067L, +0x24a19947b3916cf7L,
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+0x0801f2e2858efc16L, +0x636920d871574e69L,
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)
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override fun process() = compress(buffer.value, length * 8L)
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private val sigma = arrayOf(
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intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
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intArrayOf(14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
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intArrayOf(11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
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intArrayOf(7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
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intArrayOf(9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
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intArrayOf(2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
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intArrayOf(12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
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intArrayOf(13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
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intArrayOf(6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
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intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
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)
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override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
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val length = value.size * 8L
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val input = pad(value)
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val h = initial.copyOf()
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var t = 0L
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for (i in input.indices step block) {
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t += minOf(length - t, 1024)
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val block = input.sliceArray(i..<(i + block))
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compress(h, block, t)
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private fun finalize() {
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buffer.append(0x80.toByte())
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if (buffer.free < 17) {
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process()
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buffer.reset()
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}
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buffer.jumpTo(111)
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buffer.append(0x01.toByte())
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buffer.append(0L)
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buffer.append(length * 8L)
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process()
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}
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override fun digestInto(destination: ByteArray, destinationOffset: Int) {
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finalize()
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h.copyInto(destination, destinationOffset)
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reset()
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}
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private fun pad(value: ByteArray): ByteArray {
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val length = value.size * 8L
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val size = (value.size + 18).align(block)
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return ByteArray(size).also {
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value.copyInto(it)
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it[value.size] = -0x80
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it[size - 17] = 0x01
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length.copyInto(it, size - 8)
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}
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}
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internal fun compress(h: LongArray, block: ByteArray, t: Long) {
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val m = block.toLongArray()
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val v = LongArray(16)
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private fun compress(block: ByteArray, t: Long) {
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block.copyInto(m)
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for (i in 0..<8) v[i] = h[i]
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for (i in 0..<4) v[i + 8] = c[i]
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for (i in 0..<2) v[i + 12] = c[i + 4] xor t
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@@ -107,4 +73,37 @@ object `Blake-512` : HashFunction {
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v[c] += v[d]
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v[b] = (v[b] xor v[c]).rotateRight(11)
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}
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companion object {
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private val initial = longArrayOf(
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+0x6a09e667f3bcc908L, -0x4498517a7b3558c5L,
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+0x3c6ef372fe94f82bL, -0x5ab00ac5a0e2c90fL,
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+0x510e527fade682d1L, -0x64fa9773d4c193e1L,
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+0x1f83d9abfb41bd6bL, +0x5be0cd19137e2179L,
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)
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internal val c = longArrayOf(
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+0x243f6a8885a308d3L, +0x13198a2e03707344L,
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-0x5bf6c7ddd660ce30L, +0x082efa98ec4e6c89L,
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+0x452821e638d01377L, -0x41ab9930cb16f394L,
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-0x3f53d6483683af23L, +0x3f84d5b5b5470917L,
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-0x6de92a26768604e5L, -0x2ecef45967204a54L,
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+0x2ffd72dbd01adfb7L, -0x471e501295d9816aL,
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-0x45836fba0ed38067L, +0x24a19947b3916cf7L,
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+0x0801f2e2858efc16L, +0x636920d871574e69L,
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)
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internal val sigma = arrayOf(
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intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
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intArrayOf(14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
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intArrayOf(11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
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intArrayOf(7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
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intArrayOf(9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
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intArrayOf(2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
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intArrayOf(12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
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intArrayOf(13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
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intArrayOf(6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
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intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
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)
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}
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}
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