diff options
Diffstat (limited to 'crypto/src/crypto/macs/SipHash.cs')
| -rw-r--r-- | crypto/src/crypto/macs/SipHash.cs | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/crypto/src/crypto/macs/SipHash.cs b/crypto/src/crypto/macs/SipHash.cs index e1a19fa5b..2e8a89e3d 100644 --- a/crypto/src/crypto/macs/SipHash.cs +++ b/crypto/src/crypto/macs/SipHash.cs @@ -80,6 +80,9 @@ namespace Org.BouncyCastle.Crypto.Macs public virtual void BlockUpdate(byte[] input, int offset, int length) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + BlockUpdate(input.AsSpan(offset, length)); +#else int i = 0, fullWords = length & ~7; if (wordPos == 0) { @@ -115,8 +118,51 @@ namespace Org.BouncyCastle.Crypto.Macs } } } +#endif } +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + public virtual void BlockUpdate(ReadOnlySpan<byte> input) + { + int length = input.Length; + int i = 0, fullWords = length & ~7; + if (wordPos == 0) + { + for (; i < fullWords; i += 8) + { + m = (long)Pack.LE_To_UInt64(input[i..]); + ProcessMessageWord(); + } + for (; i < length; ++i) + { + m = (long)(((ulong)m >> 8) | ((ulong)input[i] << 56)); + } + wordPos = length - fullWords; + } + else + { + int bits = wordPos << 3; + for (; i < fullWords; i += 8) + { + ulong n = Pack.LE_To_UInt64(input[i..]); + m = (long)((n << bits) | ((ulong)m >> -bits)); + ProcessMessageWord(); + m = (long)n; + } + for (; i < length; ++i) + { + m = (long)(((ulong)m >> 8) | ((ulong)input[i] << 56)); + + if (++wordPos == 8) + { + ProcessMessageWord(); + wordPos = 0; + } + } + } + } +#endif + public virtual long DoFinal() { // NOTE: 2 distinct shifts to avoid "64-bit shift" when wordPos == 0 @@ -144,6 +190,15 @@ namespace Org.BouncyCastle.Crypto.Macs return 8; } +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + public int DoFinal(Span<byte> output) + { + long result = DoFinal(); + Pack.UInt64_To_LE((ulong)result, output); + return 8; + } +#endif + public virtual void Reset() { v0 = k0 ^ 0x736f6d6570736575L; |