added a method to util to compute the modular multiplicative inverse of two numbers (borrowed the code from the cryptography 0.4 codebase; this can go away when cryptography 0.4 actually comes out)
added a method to util to compute the modular multiplicative inverse of two numbers (borrowed the code from the cryptography 0.4 codebase; this can go away when cryptography 0.4 actually comes out)

SecurityInnovation/PGPy,SecurityInnovation/PGPy,J08nY/PGPy,J08nY/PGPy,SecurityInnovation/PGPy