Importing Binary Private Key To RSA_KEY #71

New issue

Closed

opened 2015-07-23 16:58:26 -05:00 by ghost · 3 comments

ghost commented

2015-07-23 16:58:26 -05:00

(Migrated from github.com)

I currently have all the parameters to an RSA key, but find it impossible to import them to the rsa_key parameter. For instance, in C# I simply do this:

        RSACryptoServiceProvider Key = new RSACryptoServiceProvider();
        RSAParameters parameters = new RSAParameters();
        reader.Seek(0x28C);
        parameters.Exponent = reader.ReadBytes(0x4);
        reader.Seek(0x8, SeekOrigin.Current);
        parameters.Modulus = Conversions.FlipBytesBy8(reader.ReadBytes(0x80));
        parameters.P = Conversions.FlipBytesBy8(reader.ReadBytes(0x40));
        parameters.Q = Conversions.FlipBytesBy8(reader.ReadBytes(0x40));
        parameters.DP = Conversions.FlipBytesBy8(reader.ReadBytes(0x40));
        parameters.DQ = Conversions.FlipBytesBy8(reader.ReadBytes(0x40));
        parameters.InverseQ = Conversions.FlipBytesBy8(reader.ReadBytes(0x40));
        parameters.D = new byte[0x80];
        Key.ImportParameters(parameters);

But in C, it's not possible to just set the void* parameters, since I'm assuming they use some sort of big integer type that I cannot find. I would like to some how change the data to whatever type of format rsa_import uses.

I currently have all the parameters to an RSA key, but find it impossible to import them to the rsa_key parameter. For instance, in C# I simply do this: ``` RSACryptoServiceProvider Key = new RSACryptoServiceProvider(); RSAParameters parameters = new RSAParameters(); reader.Seek(0x28C); parameters.Exponent = reader.ReadBytes(0x4); reader.Seek(0x8, SeekOrigin.Current); parameters.Modulus = Conversions.FlipBytesBy8(reader.ReadBytes(0x80)); parameters.P = Conversions.FlipBytesBy8(reader.ReadBytes(0x40)); parameters.Q = Conversions.FlipBytesBy8(reader.ReadBytes(0x40)); parameters.DP = Conversions.FlipBytesBy8(reader.ReadBytes(0x40)); parameters.DQ = Conversions.FlipBytesBy8(reader.ReadBytes(0x40)); parameters.InverseQ = Conversions.FlipBytesBy8(reader.ReadBytes(0x40)); parameters.D = new byte[0x80]; Key.ImportParameters(parameters); ``` But in C, it's not possible to just set the void\* parameters, since I'm assuming they use some sort of big integer type that I cannot find. I would like to some how change the data to whatever type of format rsa_import uses.

sjaeckel commented

2015-07-25 14:05:29 -05:00

(Migrated from github.com)