internal unsafe override bool FinalizeAndVerifyCore(
ref IncrementalHashState state,
ReadOnlySpan <byte> hash)
{
Debug.Assert(hash.Length >= crypto_generichash_blake2b_BYTES_MIN);
Debug.Assert(hash.Length <= crypto_generichash_blake2b_BYTES_MAX);
byte *buffer = stackalloc byte[63 + Unsafe.SizeOf <crypto_generichash_blake2b_state>()];
crypto_generichash_blake2b_state *state_ = Align64(buffer);
*state_ = state.blake2b;
byte *temp = stackalloc byte[hash.Length];
int error = crypto_generichash_blake2b_final(
state_,
temp,
(UIntPtr)hash.Length);
Debug.Assert(error == 0);
state.blake2b = *state_;
fixed(byte * @out = hash)
{
return(CryptographicOperations.FixedTimeEquals(temp, @out, hash.Length));
}
}
internal unsafe override void InitializeCore(
ReadOnlySpan <byte> key,
out IncrementalMacState state)
{
Debug.Assert(key.Length >= crypto_generichash_blake2b_KEYBYTES_MIN);
Debug.Assert(key.Length <= crypto_generichash_blake2b_KEYBYTES_MAX);
Debug.Assert(MacSize >= crypto_generichash_blake2b_BYTES_MIN);
Debug.Assert(MacSize <= crypto_generichash_blake2b_BYTES_MAX);
byte *buffer = stackalloc byte[63 + Unsafe.SizeOf <crypto_generichash_blake2b_state>()];
crypto_generichash_blake2b_state *state_ = Align64(buffer);
fixed(byte *k = key)
{
int error = crypto_generichash_blake2b_init(
state_,
k,
(UIntPtr)key.Length,
(UIntPtr)MacSize);
Debug.Assert(error == 0);
}
state.blake2b = *state_;
}
internal unsafe override void InitializeCore(
out IncrementalHashState state)
{
Debug.Assert(HashSize >= crypto_generichash_blake2b_BYTES_MIN);
Debug.Assert(HashSize <= crypto_generichash_blake2b_BYTES_MAX);
byte *buffer = stackalloc byte[63 + Unsafe.SizeOf <crypto_generichash_blake2b_state>()];
crypto_generichash_blake2b_state *state_ = Align64(buffer);
int error = crypto_generichash_blake2b_init(
state_,
null,
UIntPtr.Zero,
(UIntPtr)HashSize);
Debug.Assert(error == 0);
state.blake2b = *state_;
}
internal unsafe override void UpdateCore(
ref IncrementalHashState state,
ReadOnlySpan <byte> data)
{
byte *buffer = stackalloc byte[63 + Unsafe.SizeOf <crypto_generichash_blake2b_state>()];
crypto_generichash_blake2b_state *state_ = Align64(buffer);
*state_ = state.blake2b;
fixed(byte * @in = data)
{
int error = crypto_generichash_blake2b_update(
state_,
@in,
(ulong)data.Length);
Debug.Assert(error == 0);
}
state.blake2b = *state_;
}
internal unsafe override void FinalizeCore(
ref IncrementalHashState state,
Span <byte> hash)
{
Debug.Assert(hash.Length >= crypto_generichash_blake2b_BYTES_MIN);
Debug.Assert(hash.Length <= crypto_generichash_blake2b_BYTES_MAX);
byte *buffer = stackalloc byte[63 + Unsafe.SizeOf <crypto_generichash_blake2b_state>()];
crypto_generichash_blake2b_state *state_ = Align64(buffer);
*state_ = state.blake2b;
fixed(byte * @out = hash)
{
int error = crypto_generichash_blake2b_final(
state_,
@out,
(UIntPtr)hash.Length);
Debug.Assert(error == 0);
}
state.blake2b = *state_;
}
internal static unsafe extern int crypto_generichash_blake2b_update(
crypto_generichash_blake2b_state *state,
byte * @in,
ulong inlen);
internal static unsafe extern int crypto_generichash_blake2b_init(
crypto_generichash_blake2b_state *state,
byte *key,
UIntPtr keylen,
UIntPtr outlen);
internal static unsafe extern int crypto_generichash_blake2b_final(
crypto_generichash_blake2b_state *state,
byte * @out,
UIntPtr outlen);
internal static unsafe extern int crypto_generichash_blake2b_init(
crypto_generichash_blake2b_state *state,
SecureMemoryHandle key,
UIntPtr keylen,
UIntPtr outlen);
