public void HashByCryptoStream()
{
var provider = WinRTCrypto.HashAlgorithmProvider.OpenAlgorithm(HashAlgorithm.Sha1);
var hasher = provider.CreateHash();
using (var stream = new PCLCrypto.CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
stream.Write(this.data, 0, this.data.Length);
}
Assert.Equal(this.dataHash, Convert.ToBase64String(hasher.GetValueAndReset()));
}
public void HashByCryptoStream()
{
IHashAlgorithmProvider?provider = WinRTCrypto.HashAlgorithmProvider.OpenAlgorithm(HashAlgorithm.Sha1);
CryptographicHash? hasher = provider.CreateHash();
using (var stream = new PCLCrypto.CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
stream.Write(this.data, 0, this.data.Length);
}
Assert.Equal(this.dataHash, Convert.ToBase64String(hasher.GetValueAndReset()));
}
public void HashByCryptoStream()
{
var algorithm = WinRTCrypto.MacAlgorithmProvider.OpenAlgorithm(MacAlgorithm.HmacSha1);
var hasher = algorithm.CreateHash(this.keyMaterial);
using (var stream = new PCLCrypto.CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
stream.Write(this.data, 0, this.data.Length);
}
Assert.Equal(this.macBase64, Convert.ToBase64String(hasher.GetValueAndReset()));
}
// Returned array is guaranteed to be non-null and safe to index into the first 4
// bytes using pointer arithmetic.
private static byte[] Hash(byte[] value)
{
byte[] hash;
using (var hasher = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithm.Sha256).CreateHash())
{
using (var stream = new CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
stream.Write(value, 0, value.Length - SumLength);
}
var intermediateHash = hasher.GetValueAndReset();
hasher.Append(intermediateHash);
hash = hasher.GetValueAndReset();
}
if (hash.Length != Sha256Hash.Length || hash.Length < SumLength)
throw new Exception($"Double-SHA256 result has improper length {hash.Length}");
return hash;
}
public void HashByCryptoStream()
{
var algorithm = WinRTCrypto.MacAlgorithmProvider.OpenAlgorithm(MacAlgorithm.HmacSha1);
var hasher = algorithm.CreateHash(this.keyMaterial);
using (var stream = new PCLCrypto.CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
stream.Write(this.data, 0, this.data.Length);
}
Assert.Equal(this.macBase64, Convert.ToBase64String(hasher.GetValueAndReset()));
}