/// <summary>
/// Open file and get it's SHA1 hash
/// </summary>
/// <param name="file_name">File name (full path)</param>
/// <returns>String representation of the SHA1 hash</returns>
public static string GetSHAHashFromFile(string file_name, SHAType shaType)
{
System.IO.FileStream file = new System.IO.FileStream(file_name, System.IO.FileMode.Open, System.IO.FileAccess.Read);
byte[] retVal = null;
switch (shaType)
{
case SHAType.SHA1:
System.Security.Cryptography.SHA1 sha1obj = new System.Security.Cryptography.SHA1CryptoServiceProvider();
retVal = sha1obj.ComputeHash(file);
break;
case SHAType.SHA256:
System.Security.Cryptography.SHA256 sha256 = System.Security.Cryptography.SHA256.Create();
retVal = sha256.ComputeHash(file);
break;
case SHAType.SHA384:
System.Security.Cryptography.SHA384 sha384 = System.Security.Cryptography.SHA384.Create();
retVal = sha384.ComputeHash(file);
break;
case SHAType.SHA512:
System.Security.Cryptography.SHA512 sha512 = System.Security.Cryptography.SHA512.Create();
retVal = sha512.ComputeHash(file);
break;
}
file.Close();
return(BitConverter.ToString(retVal).Replace("-", "").ToLower());
}
public SHA(SHAType sType)
{
switch (sType)
{
case SHAType.SHA256:
algorithm = System.Security.Cryptography.SHA256Managed.Create();
break;
case SHAType.SHA384:
algorithm = System.Security.Cryptography.SHA384Managed.Create();
break;
case SHAType.SHA512:
algorithm = System.Security.Cryptography.SHA512Managed.Create();
break;
default:
algorithm = System.Security.Cryptography.SHA1Managed.Create();
break;
}
}
/// <summary>
/// Get SHA1 hash from a string
/// </summary>
/// <param name="input_buffer">The string to use</param>
/// <returns>String representation of the SHA1 hash</returns>
public static string GetSHAHash(string input_buffer, SHAType shaType, Encoding strEncoding)
{
switch (shaType)
{
case SHAType.SHA1:
SHA1 sha1 = new SHA1CryptoServiceProvider();
return(BitConverter.ToString(sha1.ComputeHash(strEncoding.GetBytes(input_buffer))).Replace("-", "").ToLower());
case SHAType.SHA256:
SHA256 sha256 = System.Security.Cryptography.SHA256.Create();
return(BitConverter.ToString(sha256.ComputeHash(strEncoding.GetBytes(input_buffer))).Replace("-", "").ToLower());
case SHAType.SHA384:
SHA384 sha384 = System.Security.Cryptography.SHA384.Create();
return(BitConverter.ToString(sha384.ComputeHash(strEncoding.GetBytes(input_buffer))).Replace("-", "").ToLower());
case SHAType.SHA512:
SHA512 sha512 = System.Security.Cryptography.SHA512.Create();
return(BitConverter.ToString(sha512.ComputeHash(strEncoding.GetBytes(input_buffer))).Replace("-", "").ToLower());
}
return(null);
}
/// <summary>
/// Get SHA1 hash from buffer of bytes
/// </summary>
/// <param name="input_buffer">Input buffer</param>
/// <returns>16-byte array of hash</returns>
public static byte[] GetSHAHash(byte[] input_buffer, SHAType shaType)
{
switch (shaType)
{
case SHAType.SHA1:
SHA1 sha1 = new SHA1CryptoServiceProvider();
return(sha1.ComputeHash(input_buffer));
case SHAType.SHA256:
System.Security.Cryptography.SHA256 sha256 = System.Security.Cryptography.SHA256.Create();
return(sha256.ComputeHash(input_buffer));
case SHAType.SHA384:
System.Security.Cryptography.SHA384 sha384 = System.Security.Cryptography.SHA384.Create();
return(sha384.ComputeHash(input_buffer));
case SHAType.SHA512:
System.Security.Cryptography.SHA512 sha512 = System.Security.Cryptography.SHA512.Create();
return(sha512.ComputeHash(input_buffer));
}
return(null);
}
/// <summary>
/// Get SHA1 hash from a string
/// </summary>
/// <param name="input_buffer">The string to use</param>
/// <returns>String representation of the SHA1 hash</returns>
public static string GetSHAHash(string input_buffer, SHAType shaType)
{
return(GetSHAHash(input_buffer, shaType, Encoding.UTF8));
}
