X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/c2f28e4bb4e6bc8a642d0fdc0b09b012042e9724..26936c8341691d67655a055956656f2506d53a63:/keys/tripe-keys.in diff --git a/keys/tripe-keys.in b/keys/tripe-keys.in index ad8671e1..cfa740bd 100644 --- a/keys/tripe-keys.in +++ b/keys/tripe-keys.in @@ -238,29 +238,55 @@ def conf_defaults(): ('conf-file', '${base-dir}tripe-keys.conf'), ('upload-hook', ': run upload hook'), ('kx', 'dh'), + ('kx-genalg', lambda: {'dh': 'dh', + 'ec': 'ec', + 'x25519': 'x25519', + 'x448': 'x448'}[conf['kx']]), + ('kx-param-genalg', lambda: {'dh': 'dh-param', + 'ec': 'ec-param', + 'x25519': 'empty', + 'x448': 'empty'}[conf['kx']]), ('kx-param', lambda: {'dh': '-LS -b3072 -B256', - 'ec': '-Cnist-p256'}[conf['kx']]), + 'ec': '-Cnist-p256', + 'x25519': '', + 'x448': ''}[conf['kx']]), + ('kx-attrs', lambda: {'dh': 'serialization=constlen', + 'ec': 'serialization=constlen', + 'x25519': '', + 'x448': ''}[conf['kx']]), ('kx-expire', 'now + 1 year'), ('kx-warn-days', '28'), - ('cipher', 'rijndael-cbc'), + ('bulk', 'iiv'), + ('cipher', lambda: conf['bulk'] == 'naclbox' + and 'salsa20' or 'rijndael-cbc'), ('hash', 'sha256'), ('master-keygen-flags', '-l'), + ('master-attrs', ''), ('mgf', '${hash}-mgf'), - ('mac', lambda: '%s-hmac/%d' % - (conf['hash'], - C.gchashes[conf['hash']].hashsz * 4)), - ('sig', lambda: {'dh': 'dsa', 'ec': 'ecdsa'}[conf['kx']]), + ('mac', lambda: conf['bulk'] == 'naclbox' + and 'poly1305/128' + or '%s-hmac/%d' % + (conf['hash'], + C.gchashes[conf['hash']].hashsz * 4)), + ('sig', lambda: {'dh': 'dsa', + 'ec': 'ecdsa', + 'x25519': 'ed25519', + 'x448': 'ed448'}[conf['kx']]), ('sig-fresh', 'always'), ('sig-genalg', lambda: {'kcdsa': 'dh', 'dsa': 'dsa', 'rsapkcs1': 'rsa', 'rsapss': 'rsa', 'ecdsa': 'ec', - 'eckcdsa': 'ec'}[conf['sig']]), + 'eckcdsa': 'ec', + 'ed25519': 'ed25519', + 'ed448': 'ed448'}[conf['sig']]), ('sig-param', lambda: {'dh': '-LS -b3072 -B256', 'dsa': '-b3072 -B256', 'ec': '-Cnist-p256', - 'rsa': '-b3072'}[conf['sig-genalg']]), + 'rsa': '-b3072', + 'ed25519': '', + 'ed448': ''}[conf['sig-genalg']]), ('sig-hash', '${hash}'), ('sig-expire', 'forever'), ('fingerprint-hash', '${hash}')]: @@ -344,8 +370,9 @@ Subcommands available: args = commands.keys() args.sort() for c in args: - func, min, max, help = commands[c] - print '%s %s' % (c, help) + try: func, min, max, help = commands[c] + except KeyError: die("unknown command `%s'" % c) + print '%s%s%s' % (c, help and ' ', help) ###-------------------------------------------------------------------------- ### Commands: newmaster @@ -355,7 +382,7 @@ def cmd_newmaster(args): run('''key -kmaster add -a${sig-genalg} !${sig-param} -e${sig-expire} !${master-keygen-flags} -tmaster-%d tripe-keys-master - sig=${sig} hash=${sig-hash}''' % seq) + sig=${sig} hash=${sig-hash} !${master-attrs}''' % seq) run('key -kmaster extract -f-secret repos/master.pub') ###-------------------------------------------------------------------------- @@ -364,9 +391,10 @@ def cmd_newmaster(args): def cmd_setup(args): OS.mkdir('repos') run('''key -krepos/param add - -a${kx}-param !${kx-param} + -a${kx-param-genalg} !${kx-param} -eforever -tparam tripe-param - kx-group=${kx} cipher=${cipher} hash=${hash} mac=${mac} mgf=${mgf}''') + kx-group=${kx} mgf=${mgf} mac=${mac} + bulk=${bulk} cipher=${cipher} hash=${hash} ${kx-attrs}''') cmd_newmaster(args) ###-------------------------------------------------------------------------- @@ -419,6 +447,16 @@ def cmd_upload(args): for base in commit: new = '%s.new' % base OS.rename(new, base) + + ## Remove files in the base-dir which don't correspond to ones we just + ## committed + allow = {} + basedir = conf['base-dir'] + bdl = len(basedir) + for base in commit: + if base.startswith(basedir): allow[base[bdl:]] = 1 + for found in OS.listdir(basedir): + if found not in allow: OS.remove(OS.path.join(basedir, found)) finally: OS.chdir(cwd) rmtree('tmp') @@ -460,7 +498,7 @@ def cmd_update(args): OS.chdir(cwd) if OS.path.exists('repos'): OS.rename('repos', 'repos.old') OS.rename('tmp/repos', 'repos') - if not FC.cmp('tmp/tripe-keys.conf', 'tripe-keys.conf'): + if not FC.cmp('tmp/tripe-keys.conf', 'tripe-keys.conf', False): moan('configuration file changed: recommend running another update') OS.rename('tmp/tripe-keys.conf', 'tripe-keys.conf') rmtree('repos.old') @@ -478,7 +516,7 @@ def cmd_generate(args): keyring_pub = 'peer-%s.pub' % tag zap('keyring'); zap(keyring_pub) run('key -kkeyring merge repos/param') - run('key -kkeyring add -a${kx} -pparam -e${kx-expire} -t%s tripe' % + run('key -kkeyring add -a${kx-genalg} -pparam -e${kx-expire} -t%s tripe' % tag) run('key -kkeyring extract -f-secret %s %s' % (keyring_pub, tag)) @@ -498,53 +536,77 @@ def cmd_clean(args): ###-------------------------------------------------------------------------- ### Commands: check -def cmd_check(args): +def check_key(k): now = T.time() thresh = int(conf['kx-warn-days']) * 86400 - for krf in ['master', 'keyring.pub']: - if not OS.path.exists(krf): continue - kr = C.KeyFile(krf) - for k in kr.itervalues(): - if k.exptime == C.KEXP_FOREVER: continue - elif k.exptime == C.KEXP_EXPIRE: left = -1 - else: left = k.exptime - now - if left < 0: - print "key `%s' HAS EXPIRED" % k.tag - elif left < thresh: - if left >= 86400: n, u, uu = left // 86400, 'day', 'days' - else: n, u, uu = left // 3600, 'hour', 'hours' - print "key `%s' EXPIRES in %d %s" % (k.tag, n, n == 1 and u or uu) + if k.exptime == C.KEXP_FOREVER: return None + elif k.exptime == C.KEXP_EXPIRE: left = -1 + else: left = k.exptime - now + if left < 0: + return "key `%s' HAS EXPIRED" % k.tag + elif left < thresh: + if left >= 86400: n, u, uu = left // 86400, 'day', 'days' + else: n, u, uu = left // 3600, 'hour', 'hours' + return "key `%s' EXPIRES in %d %s" % (k.tag, n, n == 1 and u or uu) + else: + return None + +def cmd_check(args): + if OS.path.exists('keyring.pub'): + for k in C.KeyFile('keyring.pub').itervalues(): + whinge = check_key(k) + if whinge is not None: print whinge + if OS.path.exists('master'): + whinges = [] + for k in C.KeyFile('master').itervalues(): + whinge = check_key(k) + if whinge is None: break + whinges.append(whinge) + else: + for whinge in whinges: print whinge ###-------------------------------------------------------------------------- ### Commands: mtu +def mac_tagsz(): + macname = conf['mac'] + index = macname.rindex('/') + if index == -1: tagsz = C.gcmacs[macname].tagsz + else: tagsz = int(macname[index + 1:])/8 + return tagsz + def cmd_mtu(args): mtu, = (lambda mtu = '1500': (mtu,))(*args) mtu = int(mtu) - blksz = C.gcciphers[conf['cipher']].blksz - - index = conf['mac'].find('/') - if index == -1: - tagsz = C.gcmacs[conf['mac']].tagsz - else: - tagsz = int(conf['mac'][index + 1:])/8 - mtu -= 20 # Minimum IP header mtu -= 8 # UDP header mtu -= 1 # TrIPE packet type octet - mtu -= tagsz # MAC tag - mtu -= 4 # Sequence number - mtu -= blksz # Initialization vector + + bulk = conf['bulk'] + + if bulk == 'v0': + blksz = C.gcciphers[conf['cipher']].blksz + mtu -= mac_tagsz() # MAC tag + mtu -= 4 # Sequence number + mtu -= blksz # Initialization vector + + elif bulk == 'iiv': + mtu -= mac_tagsz() # MAC tag + mtu -= 4 # Sequence number + + elif bulk == 'naclbox': + mtu -= 16 # MAC tag + mtu -= 4 # Sequence number + + else: + die("Unknown bulk transform `%s'" % bulk) print mtu ###-------------------------------------------------------------------------- ### Main driver. -## Exceptions. -class UsageError (Exception): pass - commands = {'help': (cmd_help, 0, 1, ''), 'newmaster': (cmd_newmaster, 0, 0, ''), 'setup': (cmd_setup, 0, 0, ''), @@ -592,10 +654,12 @@ def main(argv): cmd_help([]) else: c = argv[1] - func, min, max, help = commands[c] + try: func, min, max, help = commands[c] + except KeyError: die("unknown command `%s'" % c) args = argv[2:] - if len(args) < min or (max > 0 and len(args) > max): - raise UsageError, (c, help) + if len(args) < min or (max is not None and len(args) > max): + SYS.stderr.write('Usage: %s %s%s%s\n' % (quis, c, help and ' ', help)) + SYS.exit(1) func(args) ###----- That's all, folks --------------------------------------------------