init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Digests/Sha512Digest.cs

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+using Org.BouncyCastle.Crypto.Utilities;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crypto.Digests;
+
+public class Sha512Digest : LongDigest
+{
+	private const int DigestLength = 64;
+
+	public override string AlgorithmName => "SHA-512";
+
+	public Sha512Digest()
+	{
+	}
+
+	public Sha512Digest(Sha512Digest t)
+		: base(t)
+	{
+	}
+
+	public override int GetDigestSize()
+	{
+		return 64;
+	}
+
+	public override int DoFinal(byte[] output, int outOff)
+	{
+		Finish();
+		Pack.UInt64_To_BE(H1, output, outOff);
+		Pack.UInt64_To_BE(H2, output, outOff + 8);
+		Pack.UInt64_To_BE(H3, output, outOff + 16);
+		Pack.UInt64_To_BE(H4, output, outOff + 24);
+		Pack.UInt64_To_BE(H5, output, outOff + 32);
+		Pack.UInt64_To_BE(H6, output, outOff + 40);
+		Pack.UInt64_To_BE(H7, output, outOff + 48);
+		Pack.UInt64_To_BE(H8, output, outOff + 56);
+		Reset();
+		return 64;
+	}
+
+	public override void Reset()
+	{
+		base.Reset();
+		H1 = 7640891576956012808uL;
+		H2 = 13503953896175478587uL;
+		H3 = 4354685564936845355uL;
+		H4 = 11912009170470909681uL;
+		H5 = 5840696475078001361uL;
+		H6 = 11170449401992604703uL;
+		H7 = 2270897969802886507uL;
+		H8 = 6620516959819538809uL;
+	}
+
+	public override IMemoable Copy()
+	{
+		return new Sha512Digest(this);
+	}
+
+	public override void Reset(IMemoable other)
+	{
+		Sha512Digest t = (Sha512Digest)other;
+		CopyIn(t);
+	}
+}