SqlServer Checksum in C#

Question

I\'m using the chechsum function in sql server 2008 R2 and I would like to get the same int values in a C# app. Is there any equivalent method in c# that returns the values

Answer 1

@Dan's implementation of BinaryChecksum can be greatly simplified down in c# down to

int SqlBinaryChecksum(string text)
{
    uint accumulator = 0;
    for (int i = 0; i < text.Length; i++)
    {
        var leftRotate4bit = (accumulator << 4) | (accumulator >> -4);
        accumulator = leftRotate4bit ^ text[i];
    }
    return (int)accumulator;
}

This also makes it clearer what the algorithm is doing. For each character, a 4 bit circular shift then an xor with character's byte