C# 获取 sha256, 输入可以是 字符串,也可以是 字节流流:
自定义的输入类型的枚举:
public enum Sha26ParseType { StringType, StreamType }
核心代码:
public static string general_sha256_code(string str, Sha26ParseType type) { string result = string.Empty; byte[] by = null; //求字节流的SHA256 if (type.Equals(Sha26ParseType.StreamType)) { if (!System.IO.File.Exists(str)) return result; System.IO.FileStream stream = new System.IO.FileStream(str, System.IO.FileMode.Open, System.IO.FileAccess.Read); System.Security.Cryptography.SHA256Managed Sha256 = new System.Security.Cryptography.SHA256Managed(); by = Sha256.ComputeHash(stream); stream.Close(); } //求字符串的SHA256 else { byte[] SHA256Data = Encoding.UTF8.GetBytes(str); System.Security.Cryptography.SHA256Managed Sha256 = new System.Security.Cryptography.SHA256Managed(); by = Sha256.ComputeHash(SHA256Data); } result = BitConverter.ToString(by).Replace("-", "").ToLower(); //64 //return Convert.ToBase64String(by); //44 return result; }
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