diff options
Diffstat (limited to 'crypto/src/crypto/digests/Sha512tDigest.cs')
| -rw-r--r-- | crypto/src/crypto/digests/Sha512tDigest.cs | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/crypto/src/crypto/digests/Sha512tDigest.cs b/crypto/src/crypto/digests/Sha512tDigest.cs index 2caefa763..939dbda4f 100644 --- a/crypto/src/crypto/digests/Sha512tDigest.cs +++ b/crypto/src/crypto/digests/Sha512tDigest.cs @@ -76,6 +76,26 @@ namespace Org.BouncyCastle.Crypto.Digests return digestLength; } +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + public override int DoFinal(Span<byte> output) + { + Finish(); + + UInt64_To_BE(H1, output, 0, digestLength); + UInt64_To_BE(H2, output, 8, digestLength - 8); + UInt64_To_BE(H3, output, 16, digestLength - 16); + UInt64_To_BE(H4, output, 24, digestLength - 24); + UInt64_To_BE(H5, output, 32, digestLength - 32); + UInt64_To_BE(H6, output, 40, digestLength - 40); + UInt64_To_BE(H7, output, 48, digestLength - 48); + UInt64_To_BE(H8, output, 56, digestLength - 56); + + Reset(); + + return digestLength; + } +#endif + /** * reset the chaining variables */ @@ -170,7 +190,32 @@ namespace Org.BouncyCastle.Crypto.Digests } } - public override IMemoable Copy() +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + private static void UInt64_To_BE(ulong n, Span<byte> bs, int off, int max) + { + if (max > 0) + { + UInt32_To_BE((uint)(n >> 32), bs, off, max); + + if (max > 4) + { + UInt32_To_BE((uint)n, bs, off + 4, max - 4); + } + } + } + + private static void UInt32_To_BE(uint n, Span<byte> bs, int off, int max) + { + int num = System.Math.Min(4, max); + while (--num >= 0) + { + int shift = 8 * (3 - num); + bs[off + num] = (byte)(n >> shift); + } + } +#endif + + public override IMemoable Copy() { return new Sha512tDigest(this); } |