diff options
author | 2016-04-11 10:41:07 +0300 | |
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committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/scripts/sign-file | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/scripts/sign-file')
-rwxr-xr-x | kernel/scripts/sign-file | 421 |
1 files changed, 0 insertions, 421 deletions
diff --git a/kernel/scripts/sign-file b/kernel/scripts/sign-file deleted file mode 100755 index 3906ee1e2..000000000 --- a/kernel/scripts/sign-file +++ /dev/null @@ -1,421 +0,0 @@ -#!/usr/bin/perl -w -# -# Sign a module file using the given key. -# - -my $USAGE = -"Usage: scripts/sign-file [-v] <hash algo> <key> <x509> <module> [<dest>]\n" . -" scripts/sign-file [-v] -s <raw sig> <hash algo> <x509> <module> [<dest>]\n"; - -use strict; -use FileHandle; -use IPC::Open2; -use Getopt::Std; - -my %opts; -getopts('vs:', \%opts) or die $USAGE; -my $verbose = $opts{'v'}; -my $signature_file = $opts{'s'}; - -die $USAGE if ($#ARGV > 4); -die $USAGE if (!$signature_file && $#ARGV < 3 || $signature_file && $#ARGV < 2); - -my $dgst = shift @ARGV; -my $private_key; -if (!$signature_file) { - $private_key = shift @ARGV; -} -my $x509 = shift @ARGV; -my $module = shift @ARGV; -my ($dest, $keep_orig); -if (@ARGV) { - $dest = $ARGV[0]; - $keep_orig = 1; -} else { - $dest = $module . "~"; -} - -die "Can't read private key\n" if (!$signature_file && !-r $private_key); -die "Can't read signature file\n" if ($signature_file && !-r $signature_file); -die "Can't read X.509 certificate\n" unless (-r $x509); -die "Can't read module\n" unless (-r $module); - -# -# Function to read the contents of a file into a variable. -# -sub read_file($) -{ - my ($file) = @_; - my $contents; - my $len; - - open(FD, "<$file") || die $file; - binmode FD; - my @st = stat(FD); - die $file if (!@st); - $len = read(FD, $contents, $st[7]) || die $file; - close(FD) || die $file; - die "$file: Wanted length ", $st[7], ", got ", $len, "\n" - if ($len != $st[7]); - return $contents; -} - -############################################################################### -# -# First of all, we have to parse the X.509 certificate to find certain details -# about it. -# -# We read the DER-encoded X509 certificate and parse it to extract the Subject -# name and Subject Key Identifier. Theis provides the data we need to build -# the certificate identifier. -# -# The signer's name part of the identifier is fabricated from the commonName, -# the organizationName or the emailAddress components of the X.509 subject -# name. -# -# The subject key ID is used to select which of that signer's certificates -# we're intending to use to sign the module. -# -############################################################################### -my $x509_certificate = read_file($x509); - -my $UNIV = 0 << 6; -my $APPL = 1 << 6; -my $CONT = 2 << 6; -my $PRIV = 3 << 6; - -my $CONS = 0x20; - -my $BOOLEAN = 0x01; -my $INTEGER = 0x02; -my $BIT_STRING = 0x03; -my $OCTET_STRING = 0x04; -my $NULL = 0x05; -my $OBJ_ID = 0x06; -my $UTF8String = 0x0c; -my $SEQUENCE = 0x10; -my $SET = 0x11; -my $UTCTime = 0x17; -my $GeneralizedTime = 0x18; - -my %OIDs = ( - pack("CCC", 85, 4, 3) => "commonName", - pack("CCC", 85, 4, 6) => "countryName", - pack("CCC", 85, 4, 10) => "organizationName", - pack("CCC", 85, 4, 11) => "organizationUnitName", - pack("CCCCCCCCC", 42, 134, 72, 134, 247, 13, 1, 1, 1) => "rsaEncryption", - pack("CCCCCCCCC", 42, 134, 72, 134, 247, 13, 1, 1, 5) => "sha1WithRSAEncryption", - pack("CCCCCCCCC", 42, 134, 72, 134, 247, 13, 1, 9, 1) => "emailAddress", - pack("CCC", 85, 29, 35) => "authorityKeyIdentifier", - pack("CCC", 85, 29, 14) => "subjectKeyIdentifier", - pack("CCC", 85, 29, 19) => "basicConstraints" -); - -############################################################################### -# -# Extract an ASN.1 element from a string and return information about it. -# -############################################################################### -sub asn1_extract($$@) -{ - my ($cursor, $expected_tag, $optional) = @_; - - return [ -1 ] - if ($cursor->[1] == 0 && $optional); - - die $x509, ": ", $cursor->[0], ": ASN.1 data underrun (elem ", $cursor->[1], ")\n" - if ($cursor->[1] < 2); - - my ($tag, $len) = unpack("CC", substr(${$cursor->[2]}, $cursor->[0], 2)); - - if ($expected_tag != -1 && $tag != $expected_tag) { - return [ -1 ] - if ($optional); - die $x509, ": ", $cursor->[0], ": ASN.1 unexpected tag (", $tag, - " not ", $expected_tag, ")\n"; - } - - $cursor->[0] += 2; - $cursor->[1] -= 2; - - die $x509, ": ", $cursor->[0], ": ASN.1 long tag\n" - if (($tag & 0x1f) == 0x1f); - die $x509, ": ", $cursor->[0], ": ASN.1 indefinite length\n" - if ($len == 0x80); - - if ($len > 0x80) { - my $l = $len - 0x80; - die $x509, ": ", $cursor->[0], ": ASN.1 data underrun (len len $l)\n" - if ($cursor->[1] < $l); - - if ($l == 0x1) { - $len = unpack("C", substr(${$cursor->[2]}, $cursor->[0], 1)); - } elsif ($l == 0x2) { - $len = unpack("n", substr(${$cursor->[2]}, $cursor->[0], 2)); - } elsif ($l == 0x3) { - $len = unpack("C", substr(${$cursor->[2]}, $cursor->[0], 1)) << 16; - $len = unpack("n", substr(${$cursor->[2]}, $cursor->[0] + 1, 2)); - } elsif ($l == 0x4) { - $len = unpack("N", substr(${$cursor->[2]}, $cursor->[0], 4)); - } else { - die $x509, ": ", $cursor->[0], ": ASN.1 element too long (", $l, ")\n"; - } - - $cursor->[0] += $l; - $cursor->[1] -= $l; - } - - die $x509, ": ", $cursor->[0], ": ASN.1 data underrun (", $len, ")\n" - if ($cursor->[1] < $len); - - my $ret = [ $tag, [ $cursor->[0], $len, $cursor->[2] ] ]; - $cursor->[0] += $len; - $cursor->[1] -= $len; - - return $ret; -} - -############################################################################### -# -# Retrieve the data referred to by a cursor -# -############################################################################### -sub asn1_retrieve($) -{ - my ($cursor) = @_; - my ($offset, $len, $data) = @$cursor; - return substr($$data, $offset, $len); -} - -############################################################################### -# -# Roughly parse the X.509 certificate -# -############################################################################### -my $cursor = [ 0, length($x509_certificate), \$x509_certificate ]; - -my $cert = asn1_extract($cursor, $UNIV | $CONS | $SEQUENCE); -my $tbs = asn1_extract($cert->[1], $UNIV | $CONS | $SEQUENCE); -my $version = asn1_extract($tbs->[1], $CONT | $CONS | 0, 1); -my $serial_number = asn1_extract($tbs->[1], $UNIV | $INTEGER); -my $sig_type = asn1_extract($tbs->[1], $UNIV | $CONS | $SEQUENCE); -my $issuer = asn1_extract($tbs->[1], $UNIV | $CONS | $SEQUENCE); -my $validity = asn1_extract($tbs->[1], $UNIV | $CONS | $SEQUENCE); -my $subject = asn1_extract($tbs->[1], $UNIV | $CONS | $SEQUENCE); -my $key = asn1_extract($tbs->[1], $UNIV | $CONS | $SEQUENCE); -my $issuer_uid = asn1_extract($tbs->[1], $CONT | $CONS | 1, 1); -my $subject_uid = asn1_extract($tbs->[1], $CONT | $CONS | 2, 1); -my $extension_list = asn1_extract($tbs->[1], $CONT | $CONS | 3, 1); - -my $subject_key_id = (); -my $authority_key_id = (); - -# -# Parse the extension list -# -if ($extension_list->[0] != -1) { - my $extensions = asn1_extract($extension_list->[1], $UNIV | $CONS | $SEQUENCE); - - while ($extensions->[1]->[1] > 0) { - my $ext = asn1_extract($extensions->[1], $UNIV | $CONS | $SEQUENCE); - my $x_oid = asn1_extract($ext->[1], $UNIV | $OBJ_ID); - my $x_crit = asn1_extract($ext->[1], $UNIV | $BOOLEAN, 1); - my $x_val = asn1_extract($ext->[1], $UNIV | $OCTET_STRING); - - my $raw_oid = asn1_retrieve($x_oid->[1]); - next if (!exists($OIDs{$raw_oid})); - my $x_type = $OIDs{$raw_oid}; - - my $raw_value = asn1_retrieve($x_val->[1]); - - if ($x_type eq "subjectKeyIdentifier") { - my $vcursor = [ 0, length($raw_value), \$raw_value ]; - - $subject_key_id = asn1_extract($vcursor, $UNIV | $OCTET_STRING); - } - } -} - -############################################################################### -# -# Determine what we're going to use as the signer's name. In order of -# preference, take one of: commonName, organizationName or emailAddress. -# -############################################################################### -my $org = ""; -my $cn = ""; -my $email = ""; - -while ($subject->[1]->[1] > 0) { - my $rdn = asn1_extract($subject->[1], $UNIV | $CONS | $SET); - my $attr = asn1_extract($rdn->[1], $UNIV | $CONS | $SEQUENCE); - my $n_oid = asn1_extract($attr->[1], $UNIV | $OBJ_ID); - my $n_val = asn1_extract($attr->[1], -1); - - my $raw_oid = asn1_retrieve($n_oid->[1]); - next if (!exists($OIDs{$raw_oid})); - my $n_type = $OIDs{$raw_oid}; - - my $raw_value = asn1_retrieve($n_val->[1]); - - if ($n_type eq "organizationName") { - $org = $raw_value; - } elsif ($n_type eq "commonName") { - $cn = $raw_value; - } elsif ($n_type eq "emailAddress") { - $email = $raw_value; - } -} - -my $signers_name = $email; - -if ($org && $cn) { - # Don't use the organizationName if the commonName repeats it - if (length($org) <= length($cn) && - substr($cn, 0, length($org)) eq $org) { - $signers_name = $cn; - goto got_id_name; - } - - # Or a signifcant chunk of it - if (length($org) >= 7 && - length($cn) >= 7 && - substr($cn, 0, 7) eq substr($org, 0, 7)) { - $signers_name = $cn; - goto got_id_name; - } - - $signers_name = $org . ": " . $cn; -} elsif ($org) { - $signers_name = $org; -} elsif ($cn) { - $signers_name = $cn; -} - -got_id_name: - -die $x509, ": ", "X.509: Couldn't find the Subject Key Identifier extension\n" - if (!$subject_key_id); - -my $key_identifier = asn1_retrieve($subject_key_id->[1]); - -############################################################################### -# -# Create and attach the module signature -# -############################################################################### - -# -# Signature parameters -# -my $algo = 1; # Public-key crypto algorithm: RSA -my $hash = 0; # Digest algorithm -my $id_type = 1; # Identifier type: X.509 - -# -# Digest the data -# -my $prologue; -if ($dgst eq "sha1") { - $prologue = pack("C*", - 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, - 0x2B, 0x0E, 0x03, 0x02, 0x1A, - 0x05, 0x00, 0x04, 0x14); - $hash = 2; -} elsif ($dgst eq "sha224") { - $prologue = pack("C*", - 0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, - 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04, - 0x05, 0x00, 0x04, 0x1C); - $hash = 7; -} elsif ($dgst eq "sha256") { - $prologue = pack("C*", - 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, - 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, - 0x05, 0x00, 0x04, 0x20); - $hash = 4; -} elsif ($dgst eq "sha384") { - $prologue = pack("C*", - 0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, - 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, - 0x05, 0x00, 0x04, 0x30); - $hash = 5; -} elsif ($dgst eq "sha512") { - $prologue = pack("C*", - 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, - 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, - 0x05, 0x00, 0x04, 0x40); - $hash = 6; -} else { - die "Unknown hash algorithm: $dgst\n"; -} - -my $signature; -if ($signature_file) { - $signature = read_file($signature_file); -} else { - # - # Generate the digest and read from openssl's stdout - # - my $digest; - $digest = readpipe("openssl dgst -$dgst -binary $module") || die "openssl dgst"; - - # - # Generate the binary signature, which will be just the integer that - # comprises the signature with no metadata attached. - # - my $pid; - $pid = open2(*read_from, *write_to, - "openssl rsautl -sign -inkey $private_key -keyform PEM") || - die "openssl rsautl"; - binmode write_to; - print write_to $prologue . $digest || die "pipe to openssl rsautl"; - close(write_to) || die "pipe to openssl rsautl"; - - binmode read_from; - read(read_from, $signature, 4096) || die "pipe from openssl rsautl"; - close(read_from) || die "pipe from openssl rsautl"; - waitpid($pid, 0) || die; - die "openssl rsautl died: $?" if ($? >> 8); -} -$signature = pack("n", length($signature)) . $signature, - -# -# Build the signed binary -# -my $unsigned_module = read_file($module); - -my $magic_number = "~Module signature appended~\n"; - -my $info = pack("CCCCCxxxN", - $algo, $hash, $id_type, - length($signers_name), - length($key_identifier), - length($signature)); - -if ($verbose) { - print "Size of unsigned module: ", length($unsigned_module), "\n"; - print "Size of signer's name : ", length($signers_name), "\n"; - print "Size of key identifier : ", length($key_identifier), "\n"; - print "Size of signature : ", length($signature), "\n"; - print "Size of information : ", length($info), "\n"; - print "Size of magic number : ", length($magic_number), "\n"; - print "Signer's name : '", $signers_name, "'\n"; - print "Digest : $dgst\n"; -} - -open(FD, ">$dest") || die $dest; -binmode FD; -print FD - $unsigned_module, - $signers_name, - $key_identifier, - $signature, - $info, - $magic_number - ; -close FD || die $dest; - -if (!$keep_orig) { - rename($dest, $module) || die $module; -} |