Search code examples
hashmatlab-figure

Convert a string into hash value in matlab

How can I convert a message into a hash value using SHA/MD5 hashing in MATLAB? is there any builtin function or any fixed code?

Solution

  • There are no functions in matlab to calculate hashes. However, you can call Java (any OS) or .Net (Windows only) functions directly from matlab and either of these implement what you want.

    Note that you haven't specified the encoding of the string. The hash is different if you consider the string in ASCII, UTF8, UTF16, etc.

    Also note that matlab does not have 160-bit or 256-bit integer, so the hash can't obviously be a single integer.

    Anyway, using .Net:

    SHA256

    string = 'some string'; 
sha256hasher = System.Security.Cryptography.SHA256Managed;
sha256 = uint8(sha256hasher.ComputeHash(uint8(string)));
dec2hex(sha256)

    SHA1

    sha1hasher = System.Security.Cryptography.SHA1Managed;
sha1= uint8(sha1hasher.ComputeHash(uint8(string)));
dec2hex(sha1)

    Java based solution can be found in the following link https://www.mathworks.com/matlabcentral/answers/45323-how-to-calculate-hash-sum-of-a-string-using-java