Ejemplo n.º 1
0
        private async Task <(byte[] CipherKey, byte[] MacKey)> ExpandKeysAsync(CancellationToken cancellationToken)
        {
            var key = await _keyProvider.GetKeyAsync(cancellationToken);

            var hkdf      = new Hkdf(HashAlgorithmName.SHA256);
            var cipherKey = hkdf.Expand(key, KeyContext.Cipher, 32);
            var macKey    = hkdf.Expand(key, KeyContext.Mac, 32);

            return(cipherKey, macKey);
        }
Ejemplo n.º 2
0
        private async Task <(byte[] CipherKey, byte[] MacKey)> ExpandKeysAsync(CancellationToken cancellationToken)
        {
            var key = await _keyProvider.GetKeyAsync(cancellationToken);

            using (var hkdf = new Hkdf <HMACSHA256>())
            {
                var cipherKey = hkdf.Expand(key, KeyContext.Cipher, 32);
                var macKey    = hkdf.Expand(key, KeyContext.Mac, 32);
                return(cipherKey, macKey);
            }
        }