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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-23 23:08:14 +00:00

tools: rename firmwarectl to binctl, minor reformat

This commit is contained in:
Pavol Rusnak 2017-03-30 22:58:00 +02:00
parent 722e71eb31
commit dd69929ce1
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GPG Key ID: 91F3B339B9A02A3D
2 changed files with 39 additions and 19 deletions

View File

@ -24,7 +24,7 @@ it will start in a firmware update mode, allowing a firmware update via USB.
* Hash function used for computing data digest for signatures is BLAKE2s.
* Signature system is Ed25519 (allows combining signatures by multiple keys into one).
* All multibyte integer values are little endian.
* There is a tool called [firmwarectl](../tools/firmwarectl) which checks validity of the loader/firmware images including their headers.
* There is a tool called [binctl](../tools/binctl) which checks validity of the loader/firmware images including their headers.
## Loader Format

View File

@ -23,9 +23,17 @@ class LoaderImage:
def __init__(self, data):
header = struct.unpack('<4sIIIBBBB171sB64s', data[:256])
self.magic, self.hdrlen, self.expiry, self.codelen, \
self.vmajor, self.vminor, self.vpatch, self.vbuild, \
self.reserved, self.sigidx, self.sig = header
self.magic, \
self.hdrlen, \
self.expiry, \
self.codelen, \
self.vmajor, \
self.vminor, \
self.vpatch, \
self.vbuild, \
self.reserved, \
self.sigidx, \
self.sig = header
assert self.magic == b'TRZL'
assert self.hdrlen == 256
assert self.codelen + self.hdrlen >= 4 * 1024
@ -45,7 +53,7 @@ class LoaderImage:
print(' * sigidx :', self.sigidx)
print(' * sig :', binascii.hexlify(self.sig).decode('ascii'))
def header(self, sig=True):
def serialize_header(self, sig=True):
header = struct.pack('<4sIIIBBBB171s', \
self.magic, self.hdrlen, self.expiry, self.codelen, \
self.vmajor, self.vminor, self.vpatch, self.vbuild, \
@ -58,14 +66,14 @@ class LoaderImage:
return header
def sign(self):
header = self.header(sig=False)
header = self.serialize_header(sig=False)
data = header + self.code
assert len(data) == self.hdrlen + self.codelen
self.sigidx, self.sig = get_sig(data)
def write(self, filename):
with open(filename, 'wb') as f:
f.write(self.header())
f.write(self.serialize_header())
f.write(self.code)
@ -73,9 +81,13 @@ class VendorHeader:
def __init__(self, data):
header = struct.unpack('<4sIIBBBB', data[:16])
self.magic, self.hdrlen, self.expiry, \
self.vmajor, self.vminor, \
self.vsig_m, self.vsig_n = header
self.magic, \
self.hdrlen, \
self.expiry, \
self.vmajor, \
self.vminor, \
self.vsig_m, \
self.vsig_n = header
assert self.magic == b'TRZF'
assert self.vsig_m > 0 and self.vsig_m <= self.vsig_n
assert self.vsig_n > 0 and self.vsig_n <= 8
@ -115,7 +127,7 @@ class VendorHeader:
print(' * sigidx :', self.sigidx)
print(' * sig :', binascii.hexlify(self.sig).decode('ascii'))
def header(self, sig=True):
def serialize_header(self, sig=True):
header = struct.pack('<4sIIBBBB', \
self.magic, self.hdrlen, self.expiry, \
self.vmajor, self.vminor, \
@ -132,21 +144,29 @@ class VendorHeader:
return header
def sign(self):
header = self.header(sig=False)
header = self.serialize_header(sig=False)
self.sigidx, self.sig = get_sig(header)
def write(self, filename):
with open(filename, 'wb') as f:
f.write(self.header())
f.write(self.serialize_header())
class FirmwareImage:
def __init__(self, data):
header = struct.unpack('<4sIIIBBBB171sB64s', data[:256])
self.magic, self.hdrlen, self.expiry, self.codelen, \
self.vmajor, self.vminor, self.vpatch, self.vbuild, \
self.reserved, self.sigidx, self.sig = header
self.magic, \
self.hdrlen, \
self.expiry, \
self.codelen, \
self.vmajor, \
self.vminor, \
self.vpatch, \
self.vbuild, \
self.reserved, \
self.sigidx, \
self.sig = header
assert self.magic == b'TRZF'
assert self.hdrlen == 256
assert self.codelen % 4 == 0
@ -164,7 +184,7 @@ class FirmwareImage:
print(' * sigidx :', self.sigidx)
print(' * sig :', binascii.hexlify(self.sig).decode('ascii'))
def header(self, sig=True):
def serialize_header(self, sig=True):
header = struct.pack('<4sIIIBBBB171s', \
self.magic, self.hdrlen, self.expiry, self.codelen, \
self.vmajor, self.vminor, self.vpatch, self.vbuild, \
@ -177,14 +197,14 @@ class FirmwareImage:
return header
def sign(self):
header = self.header(sig=False)
header = self.serialize_header(sig=False)
data = header + self.code
assert len(data) == self.hdrlen + self.codelen
self.sigidx, self.sig = get_sig(data)
def write(self, filename):
with open(filename, 'wb') as f:
f.write(self.header())
f.write(self.serialize_header())
f.write(self.code)