converting strings to hex

[dave em]

On Thursday, April 3, 2014 8:31:42 PM UTC-6, Tim Chase wrote:
> On 2014-04-03 19:10, dave em wrote:
> 
> > So my first step is to compute the key.  I suspect my error below
> 
> > is because c1 is a float and m1 is a string but I don't know how to
> 
> > turn the string into a float.
> 
> 
> 
> For the record, "c1" in your example should be an integer/long
> 
> 
> 
> It sounds like you want the optional parameter to int() so you'd do
> 
> 
> 
> >>> hex_string = "My text message".encode("hex")
> 
> >>> hex_string
> 
> '4d792074657874206d657373616765'
> 
> >>> m1 = int(hex_string, 16)  # magic happens here
> 
> >>> m1
> 
> 402263600993355509170946582822086501L
> 
> >>> c1=0x6c73d5240a948c86981bc294814d 
> 
> >>> c1
> 
> 2199677439761906166135512011931981L
> 
> >>> k = m1 ^ c1
> 
> >>> k
> 
> 400239414552556350237329405469124136L
> 
> >>> hex(k) # as a string
> 
> '0x4d1553a14172e0acebfd68b1f5e628L'
> 
> 
> 
> 
> 
> -tkc

Thanks, got it.  Sometimes the simple things can be difficult.

Dave