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# Copyright (c) 2015, NORDUnet A/S
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# - Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
#
# - Neither the name of the NORDUnet nor the names of its contributors may
#   be used to endorse or promote products derived from this software
#   without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

INC	= ../hal.h
LIB	= ../libhal.a
BIN	= eim_peek_poke cores

CFLAGS	= -g3 -Wall -fPIC -std=c99 -I..

all: ${BIN}

clean:
	rm -f *.o ${BIN}

${BIN}: %: %.o ${LIB}
	${CC} ${CFLAGS} -o $@ $^ ${LDFLAGS}

%.o: %.c ${INC}
	${CC} ${CFLAGS} -c -o $@ $<
(INCLUDING # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter from os import urandom from Crypto.Protocol.KDF import PBKDF2 from Crypto.Hash import SHA256, HMAC parser = ArgumentParser(description = __doc__, formatter_class = ArgumentDefaultsHelpFormatter) parser.add_argument("-p", "--pin", default = "YouReallyNeedToChangeThisPINRightNowWeAreNotKidding", help = "PIN plaintext before PBKDF2 processing") parser.add_argument("-i", "--iterations", type = int, default = 10000, help = "PBKDF2 iteration count") parser.add_argument("-d", "--derived-key-length", type = int, default = 64, help = "length of PBKDF2 output (must match libhal)") args = parser.parse_args() def HMAC_SHA256(pin, salt): return HMAC.new(pin, salt, SHA256).digest() def hexify(value): return ", ".join("0x%02x" % ord(v) for v in value) salt = urandom(16) pin = PBKDF2(password = args.pin, salt = salt, dkLen = args.derived_key_length, count = args.iterations, prf = HMAC_SHA256) print '''\ /* * Automatically generated by a script, do not edit. */ static const hal_ks_pin_t hal_last_gasp_pin = {{ {iterations}, {{{pin}}}, {{{salt}}} }};'''.format(iterations = args.iterations, pin = hexify(pin), salt = hexify(salt))