### Variable: gnutls-min-prime-bits

Minimum number of prime bits accepted by GnuTLS for key exchange.

During a Diffie-Hellman handshake, if the server sends a prime

number with fewer than this number of bits, the handshake is

rejected. (The smaller the prime number, the less secure the

key exchange is against man-in-the-middle attacks.)

A value of nil says to use the default GnuTLS value.