public static void ExtractWithEmptySalt()
{
const int HashLen = 512 / 8;
var a = new HkdfSha512();
using (var s = SharedSecret.Import(ReadOnlySpan <byte> .Empty))
{
var expected = a.Extract(s, new byte[HashLen]);
var actual = a.Extract(s, ReadOnlySpan <byte> .Empty);
Assert.Equal(expected, actual);
}
}
public static void ExtractWithSpanWithEmptySalt()
{
const int HashLen = 512 / 8;
var a = new HkdfSha512();
using (var s = SharedSecret.Import(ReadOnlySpan <byte> .Empty))
{
var expected = new byte[a.PseudorandomKeySize];
var actual = new byte[expected.Length];
a.Extract(s, new byte[HashLen], expected);
a.Extract(s, ReadOnlySpan <byte> .Empty, actual);
Assert.Equal(expected, actual);
}
}
public static void ExtractWithSpanTooLong()
{
var a = new HkdfSha512();
using (var s = SharedSecret.Import(ReadOnlySpan <byte> .Empty))
{
Assert.Throws <ArgumentException>("pseudorandomKey", () => a.Extract(s, ReadOnlySpan <byte> .Empty, new byte[a.PseudorandomKeySize + 1]));
}
}
public static void ExtractSuccess()
{
var a = new HkdfSha512();
using (var s = SharedSecret.Import(ReadOnlySpan <byte> .Empty))
{
var expected = s_prkForEmpty.DecodeHex();
var actual = a.Extract(s, ReadOnlySpan <byte> .Empty);
Assert.Equal(expected, actual);
Assert.Equal(a.PseudorandomKeySize, actual.Length);
}
}
public static void ExtractWithSpanSuccess()
{
var a = new HkdfSha512();
using (var s = SharedSecret.Import(ReadOnlySpan <byte> .Empty))
{
var expected = s_prkForEmpty.DecodeHex();
var actual = new byte[expected.Length];
a.Extract(s, ReadOnlySpan <byte> .Empty, actual);
Assert.Equal(expected, actual);
}
}
public static void ExtractWithSpanWithNullSecret()
{
var a = new HkdfSha512();
Assert.Throws <ArgumentNullException>("sharedSecret", () => a.Extract(null, ReadOnlySpan <byte> .Empty, Span <byte> .Empty));
}
