KEYRING-GENSK(2) KEYRING-GENSK(2)
NAME
keyring: genSK, genSKfromPK, sktopk, dhparams - generate
keys
SYNOPSIS
include "keyring.m";
keyring := load Keyring Keyring->PATH;
genSK: fn(algname, owner: string, length: int): ref SK;
genSKfromPK: fn(pk: ref PK, owner: string): ref SK;
sktopk: fn(sk: ref SK): ref PK;
dhparams: fn(nbits: int): (ref IPint, ref IPint);
DESCRIPTION
GenSK generates a public/private key pair, represented by
SK. (Although we call it a `private key', SK contains both
the private and public parts of a public key.) Algname is
the name of the algorithm to use; in the current implementa-
tion, only elgamal and rsa are possible. Owner is the user
name to be associated with the key. Length gives the length
of the key modulus in bits. GenSK returns nil if an unknown
algorithm has been specified.
GenSKfromPK generates a private key that has the same system
parameters as the public key pk. It is used to generate new
keys that are of the same complexity as old keys.
Sktopk extracts the public part of private key.
Dhparams creates Diffie-Hellman parameters. The second IPint
returned is an nbits long prime number that serves as the
modulus. The first IPint is a primitive root in the integer
field defined by that modulus.
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