.net如何创建SHA1哈希？

是否有内置技术来做到这一点？它期望什么参数？

每个MSDN

byte[] data = new byte[DATA_SIZE];
byte[] result; 

SHA1 sha = new SHA1CryptoServiceProvider(); 
// This is one implementation of the abstract class SHA1.
result = sha.ComputeHash(data);