# < Summary

Information

Class: | Renci.SshNet.Security.Chaos.NaCl.Sha512
Assembly: | Renci.SshNet
File(s): | \home\appveyor\projects\ssh-net\src\Renci.SshNet\Security\Chaos.NaCl\Sha512.cs

Line coverage
73%

Covered lines: | 69
Uncovered lines: | 25
Coverable lines: | 94
Total lines: | 132
Line coverage: | 73.4%

Branch coverage
57%

Covered branches: | 15
Total branches: | 26
Branch coverage: | 57.6%

Method coverage

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# Metrics

Method | Branch coverage | Cyclomatic complexity | Line coverage
--- | --- | --- | ---
.cctor() | 100% | 1 | 100%
.ctor() | 100% | 1 | 100%
Init() | 100% | 1 | 100%
Update(...) | 0% | 2 | 0%
Update(...) | 66.66% | 18 | 72.5%
Finish(...) | 50% | 6 | 76.92%
Finish() | 100% | 1 | 100%
Hash(...) | 100% | 1 | 0%
Hash(...) | 100% | 1 | 100%

# File(s)

## \home\appveyor\projects\ssh-net\src\Renci.SshNet\Security\Chaos.NaCl\Sha512.cs

| # | Line |  | Line coverage
--- | --- | --- | --- | ---
|  | `1` |  | `using System;`
|  | `2` |  | `using System.Collections.Generic;`
|  | `3` |  | `using Renci.SshNet.Security.Chaos.NaCl.Internal;`
|  | `4` |  | ``
|  | `5` |  | `namespace Renci.SshNet.Security.Chaos.NaCl`
|  | `6` |  | `{`
|  | `7` |  | `internal class Sha512`
|  | `8` |  | `{`
|  | `9` |  | `private Array8<UInt64> _state;`
|  | `10` |  | `private readonly byte[] _buffer;`
|  | `11` |  | `private ulong _totalBytes;`
|  | `12` |  | `public const int BlockSize = 128;`
| 4 | `13` |  | `private static readonly byte[] _padding = new byte[] { 0x80 };`
|  | `14` |  | ``
| 11 | `15` |  | `public Sha512()`
| 11 | `16` |  | `{`
| 11 | `17` |  | `_buffer = new byte[BlockSize];//todo: remove allocation`
| 11 | `18` |  | `Init();`
| 11 | `19` |  | `}`
|  | `20` |  | ``
|  | `21` |  | `public void Init()`
| 13 | `22` |  | `{`
| 13 | `23` |  | `Sha512Internal.Sha512Init(out _state);`
| 13 | `24` |  | `_totalBytes = 0;`
| 13 | `25` |  | `}`
|  | `26` |  | ``
|  | `27` |  | `public void Update(ArraySegment<byte> data)`
| 0 | `28` |  | `{`
| 0 | `29` |  | `if (data.Array == null)`
| 0 | `30` |  | `throw new ArgumentNullException("data.Array");`
| 0 | `31` |  | `Update(data.Array, data.Offset, data.Count);`
| 0 | `32` |  | `}`
|  | `33` |  | ``
|  | `34` |  | `public void Update(byte[] data, int offset, int count)`
| 35 | `35` |  | `{`
| 35 | `36` |  | `if (data == null)`
| 0 | `37` |  | `throw new ArgumentNullException("data");`
| 35 | `38` |  | `if (offset < 0)`
| 0 | `39` |  | `throw new ArgumentOutOfRangeException("offset");`
| 35 | `40` |  | `if (count < 0)`
| 0 | `41` |  | `throw new ArgumentOutOfRangeException("count");`
| 35 | `42` |  | `if (data.Length - offset < count)`
| 0 | `43` |  | `throw new ArgumentException("Requires offset + count <= data.Length");`
|  | `44` |  | ``
|  | `45` |  | `Array16<ulong> block;`
| 35 | `46` |  | `int bytesInBuffer = (int)_totalBytes & (BlockSize - 1);`
| 35 | `47` |  | `_totalBytes += (uint)count;`
|  | `48` |  | ``
| 35 | `49` |  | `if (_totalBytes >= ulong.MaxValue / 8)`
| 0 | `50` |  | `throw new InvalidOperationException("Too much data");`
|  | `51` |  | `// Fill existing buffer`
| 35 | `52` |  | `if (bytesInBuffer != 0)`
| 22 | `53` |  | `{`
| 22 | `54` |  | `var toCopy = Math.Min(BlockSize - bytesInBuffer, count);`
| 22 | `55` |  | `Buffer.BlockCopy(data, offset, _buffer, bytesInBuffer, toCopy);`
| 22 | `56` |  | `offset += toCopy;`
| 22 | `57` |  | `count -= toCopy;`
| 22 | `58` |  | `bytesInBuffer += toCopy;`
| 22 | `59` |  | `if (bytesInBuffer == BlockSize)`
| 2 | `60` |  | `{`
| 2 | `61` |  | `ByteIntegerConverter.Array16LoadBigEndian64(out block, _buffer, 0);`
| 2 | `62` |  | `Sha512Internal.Core(out _state, ref _state, ref block);`
| 2 | `63` |  | `CryptoBytes.InternalWipe(_buffer, 0, _buffer.Length);`
| 2 | `64` |  | `bytesInBuffer = 0;`
| 2 | `65` |  | `}`
| 22 | `66` |  | `}`
|  | `67` |  | `// Hash complete blocks without copying`
| 35 | `68` |  | `while (count >= BlockSize)`
| 0 | `69` |  | `{`
| 0 | `70` |  | `ByteIntegerConverter.Array16LoadBigEndian64(out block, data, offset);`
| 0 | `71` |  | `Sha512Internal.Core(out _state, ref _state, ref block);`
| 0 | `72` |  | `offset += BlockSize;`
| 0 | `73` |  | `count -= BlockSize;`
| 0 | `74` |  | `}`
|  | `75` |  | `// Copy remainder into buffer`
| 35 | `76` |  | `if (count > 0)`
| 15 | `77` |  | `{`
| 15 | `78` |  | `Buffer.BlockCopy(data, offset, _buffer, bytesInBuffer, count);`
| 15 | `79` |  | `}`
| 35 | `80` |  | `}`
|  | `81` |  | ``
|  | `82` |  | `public void Finish(ArraySegment<byte> output)`
| 13 | `83` |  | `{`
| 13 | `84` |  | `if (output.Array == null)`
| 0 | `85` |  | `throw new ArgumentNullException("output.Array");`
| 13 | `86` |  | `if (output.Count != 64)`
| 0 | `87` |  | `throw new ArgumentException("output.Count must be 64");`
|  | `88` |  | ``
| 13 | `89` |  | `Update(_padding, 0, _padding.Length);`
|  | `90` |  | `Array16<ulong> block;`
| 13 | `91` |  | `ByteIntegerConverter.Array16LoadBigEndian64(out block, _buffer, 0);`
| 13 | `92` |  | `CryptoBytes.InternalWipe(_buffer, 0, _buffer.Length);`
| 13 | `93` |  | `int bytesInBuffer = (int)_totalBytes & (BlockSize - 1);`
| 13 | `94` |  | `if (bytesInBuffer > BlockSize - 16)`
| 0 | `95` |  | `{`
| 0 | `96` |  | `Sha512Internal.Core(out _state, ref _state, ref block);`
| 0 | `97` |  | `block = default(Array16<ulong>);`
| 0 | `98` |  | `}`
| 13 | `99` |  | `block.x15 = (_totalBytes - 1) * 8;`
| 13 | `100` |  | `Sha512Internal.Core(out _state, ref _state, ref block);`
|  | `101` |  | ``
| 13 | `102` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 0, _state.x0);`
| 13 | `103` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 8, _state.x1);`
| 13 | `104` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 16, _state.x2);`
| 13 | `105` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 24, _state.x3);`
| 13 | `106` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 32, _state.x4);`
| 13 | `107` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 40, _state.x5);`
| 13 | `108` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 48, _state.x6);`
| 13 | `109` |  | `ByteIntegerConverter.StoreBigEndian64(output.Array, output.Offset + 56, _state.x7);`
| 13 | `110` |  | `_state = default(Array8<ulong>);`
| 13 | `111` |  | `}`
|  | `112` |  | ``
|  | `113` |  | `public byte[] Finish()`
| 13 | `114` |  | `{`
| 13 | `115` |  | `var result = new byte[64];`
| 13 | `116` |  | `Finish(new ArraySegment<byte>(result));`
| 13 | `117` |  | `return result;`
| 13 | `118` |  | `}`
|  | `119` |  | ``
|  | `120` |  | `internal static byte[] Hash(byte[] data)`
| 0 | `121` |  | `{`
| 0 | `122` |  | `return Hash(data, 0, data.Length);`
| 0 | `123` |  | `}`
|  | `124` |  | ``
|  | `125` |  | `internal static byte[] Hash(byte[] data, int offset, int count)`
| 7 | `126` |  | `{`
| 7 | `127` |  | `var hasher = new Sha512();`
| 7 | `128` |  | `hasher.Update(data, offset, count);`
| 7 | `129` |  | `return hasher.Finish();`
| 7 | `130` |  | `}`
|  | `131` |  | `}`
|  | `132` |  | `}`

# Methods/Properties

.cctor()
.ctor()
Init()
Update(System.ArraySegment`1<System.Byte>)
Update(System.Byte[],System.Int32,System.Int32)
Finish(System.ArraySegment`1<System.Byte>)
Finish()
Hash(System.Byte[])
Hash(System.Byte[],System.Int32,System.Int32)