def _get_data_int(self, sign):
# Backup the parsegen
backup = _BackupMbnParsegen(self._mbn_parsegen)
# Update the security attributes per the flags
if sign:
self._mbn_parsegen.sign = self._data_signature
self._mbn_parsegen.cert_chain = self._cert_chain
self._mbn_parsegen.pad_max_encr_params_size = 0
# Set padding info
if sign:
self._mbn_parsegen.set_pad_info(
self.sig_size, self.get_cert_chain_size(self.authority))
# Get the signed data
retval = self._mbn_parsegen.get_data(self.authority, self.imageinfo,
self.validating, self.signing,
self.add_signing_attr_to_hash_seg)
# Clear padding info
self._mbn_parsegen.set_pad_info(0, 0)
# Restore the parsegen
backup.restore(self._mbn_parsegen, "sign", "cert_chain")
return retval
def data_to_sign(self):
# Backup the parsegen
backup = _BackupMbnParsegen(self._mbn_parsegen, "sign", "cert_chain")
with V3DataToSignCtxMgr(self) as ctx:
pass
retval = ctx.header.pack() + self._mbn_parsegen.code
# Clear padding info
self._mbn_parsegen.set_pad_info(0, 0)
# Restore the parsegen
backup.restore(self._mbn_parsegen, "sign", "cert_chain")
return retval
def data_to_sign_format(self):
# Backup the parsegen
backup = _BackupMbnParsegen(self._mbn_parsegen, "sign", "cert_chain")
# Get the format of the data to sign
with V3DataToSignCtxMgr(self) as ctx:
pass
fmt = ctx.header.get_format_description()
# Clear padding info
self._mbn_parsegen.set_pad_info(0, 0)
# Restore the parsegen
backup.restore(self._mbn_parsegen, "sign", "cert_chain")
return fmt
def data_to_sign(self):
# Backup the parsegen
backup = _BackupMbnParsegen(
self._mbn_parsegen, "sign", "cert_chain", "encryption_params",
"sign_qti", "cert_chain_qti")
with V5DataToSignCtxMgr(self) as ctx:
pass
# Mask metadata and sig/cert sizes of other authority
header = self.utils.mask_header_values(ctx.header, self.authority)
retval = header.pack() + self._mbn_parsegen.code
# Clear padding info
self._mbn_parsegen.set_pad_info(0, 0)
# Restore the parsegen
backup.restore(
self._mbn_parsegen, "sign", "cert_chain", "encryption_params",
"sign_qti", "cert_chain_qti")
return retval
def _get_data_int(self, sign, encrypt):
# Backup the parsegen
backup = _BackupMbnParsegen(
self._mbn_parsegen, "sign", "cert_chain", "encryption_params",
"sign_qti", "cert_chain_qti")
backup_encrypt_pad = self._mbn_parsegen.pad_max_encr_params_size
# Update the security attributes per the flags
if sign:
self._mbn_parsegen.sign = self._data_signature
self._mbn_parsegen.cert_chain = self._cert_chain
self._mbn_parsegen.sign_qti = self._data_signature_qti
self._mbn_parsegen.cert_chain_qti = self._cert_chain_qti
if encrypt or (self.oem_signing_enabled and self.qti_signing_enabled):
self._mbn_parsegen.encryption_params = self.encryption_params
else:
self._mbn_parsegen.pad_max_encr_params_size = 0
# Set padding info
if sign:
self._mbn_parsegen.set_pad_info(
self.sig_size, self.get_cert_chain_size(self.authority))
# Get the signed data
retval = self._mbn_parsegen.get_data(
self.authority, self.imageinfo, self.validating, self.signing,
self.add_signing_attr_to_hash_seg)
# Clear padding info
self._mbn_parsegen.set_pad_info(0, 0)
# Restore the parsegen
backup.restore(
self._mbn_parsegen, "sign", "cert_chain", "encryption_params",
"sign_qti", "cert_chain_qti")
self._mbn_parsegen.pad_max_encr_params_size = backup_encrypt_pad
return retval