file accessing in load_pub_key

Question

Consider the code:

fileHandle = open ( 'test8.pem','w' )
fileHandle.write (data)

pub_key = M2Crypto.RSA.load_pub_key(open('test8.pem'))

Error coming like :

 File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 343, in load_pub_key
bio = BIO.openfile(file) 
  File "/usr/lib/python2.4/site-packages/M2Crypto/BIO.py", line 186, in openfile
    return File(open(filename, mode))
IOError: [Errno 2] No such file or directory: ''

what wrong in the way i use ? My query is how do I pass the file into load_pub_key method so it can be accessible by simply passing the file name ?

Answer 1

If you pass test8.pem without quotes, Python interprets it as the name of a variable, which is not defined, hence the error.

I don't know the specific library you are using but I would guess that you need to pass fileHandle instead.

Answer 2

this should work for you:

fname = 'test8.pem'
fileHandle = open(fname, 'w')
fileHandle.write(data)
fileHandle.close()
pub_key = M2Crypto.RSA.load_pub_key(fname)