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Merge pull request #12110 from mlschroe/master
[backend] implement cosign signature creation for external registries
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| # | ||
| # Copyright (c) 2022 SUSE Inc. | ||
| # | ||
| # This program is free software; you can redistribute it and/or modify | ||
| # it under the terms of the GNU General Public License version 2 as | ||
| # published by the Free Software Foundation. | ||
| # | ||
| # This program is distributed in the hope that it will be useful, | ||
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| # GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License | ||
| # along with this program (see the file COPYING); if not, write to the | ||
| # Free Software Foundation, Inc., | ||
| # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA | ||
| # | ||
| ################################################################ | ||
| # | ||
| # Sigstore rekor support | ||
| # | ||
|
|
||
| package BSRekor; | ||
|
|
||
| use strict; | ||
|
|
||
| use JSON::XS (); | ||
| use MIME::Base64 (); | ||
|
|
||
| use BSRPC ':https'; | ||
| use BSConfiguration; | ||
|
|
||
| our $intoto_slsav1 = "https://slsa.dev/provenance/v0.1"; | ||
| our $intoto_spdx = "https://spdx.dev/Document"; | ||
| our $intoto_linkv1= "https://in-toto.io/Link/v1"; | ||
| our $intoto_cosignv1 = "cosign.sigstore.dev/attestation/v1"; | ||
|
|
||
| sub canonical_json { | ||
| my ($d) = @_; | ||
| return JSON::XS->new->utf8->canonical->encode($d); | ||
| } | ||
|
|
||
| sub mime_encode { | ||
| my ($d) = @_; | ||
| return MIME::Base64::encode_base64($d, ''); | ||
| } | ||
|
|
||
| sub dsse_pae { | ||
| my ($type, $payload) = @_; | ||
| return sprintf("DSSEv1 %d %s %d ", length($type), $type, length($payload))."$payload"; | ||
| } | ||
|
|
||
| sub upload_entry { | ||
| my ($server, $entry) = @_; | ||
| my $replyheaders; | ||
| my $param = { | ||
| 'uri' => "$server/api/v1/log/entries", | ||
| 'request' => 'POST', | ||
| 'timeout' => 300, | ||
| 'data' => canonical_json($entry), | ||
| 'headers' => [ 'Content-Type: application/json' ], | ||
| 'replyheaders' => \$replyheaders, | ||
| 'ignorestatus' => 1, | ||
| }; | ||
| my $r = BSRPC::rpc($param); | ||
| my $st = $replyheaders->{'status'}; | ||
| if ($st !~ /^201|409/) { | ||
| my $msg = eval { (JSON::XS::decode_json($r) || {})->{'message'} }; | ||
| die("rekor server: $st ($msg)\n") if $msg; | ||
| die("rekor server: $st\n"); | ||
| } | ||
| # entry created or already exists | ||
| my $l = $replyheaders->{'location'}; | ||
| die("rekor server did not return a location\n") unless $l; | ||
| $l =~ s/.*\///; | ||
| return $l; | ||
| # new: {"84f4192f5c38c9eb0973dae7bdd24e0ad6781d9e228b4ee60f411ea0e1050482":{"body":"...","integratedTime":1638195094,"logID":"c0d23d6ad406973f9559f3ba2d1ca01f84147d8ffc5b8445c224f98b9591801d","logIndex":897532,"verification":{"signedEntryTimestamp":"MEQCIDd8LwH1lbeUfCjwRoX5J7fzZ5qIK4PwMsf+sHJHgCCTAiB1h1nD0OjeleiBph8UtlZMTwlpNLq3cSaZ0Oxc8Gom0A=="}}} | ||
| } | ||
|
|
||
| sub upload_rekord { | ||
| my ($server, $content, $pubkey, $signature, $sigformat) = @_; | ||
| my $sig = { | ||
| 'format' => $sigformat, | ||
| 'content' => mime_encode($signature), | ||
| 'publicKey' => { 'content' => mime_encode($pubkey) }, | ||
| }; | ||
| my $spec = { | ||
| 'data' => { 'content' => mime_encode($content) }, | ||
| 'signature' => $sig, | ||
| }; | ||
| my $entry = { | ||
| 'kind' => 'rekord', | ||
| 'apiVersion' => '0.0.1', | ||
| 'spec' => $spec, | ||
| }; | ||
| return upload_entry($server, $entry); | ||
| } | ||
|
|
||
| sub upload_hashedrekord { | ||
| my ($server, $hash, $pubkey, $signature) = @_; | ||
| die("bad hash $hash\n") unless $hash =~ /^(.+?):([0-9a-f]+)$/; | ||
| my ($hashalgo, $hashvalue) = ($1, $2); | ||
| my $sig = { | ||
| 'content' => mime_encode($signature), | ||
| 'publicKey' => { 'content' => mime_encode($pubkey) }, | ||
| }; | ||
| my $spec = { | ||
| 'data' => { 'hash' => { 'algorithm' => $hashalgo, 'value' => $hashvalue } }, | ||
| 'signature' => $sig, | ||
| }; | ||
| my $entry = { | ||
| 'kind' => 'hashedrekord', | ||
| 'apiVersion' => '0.0.1', | ||
| 'spec' => $spec, | ||
| }; | ||
| return upload_entry($server, $entry); | ||
| } | ||
|
|
||
| sub upload_intoto { | ||
| my ($server, $pubkey, $payloadtype, $payload, $signature) = @_; | ||
| my $envelope = { | ||
| 'payload' => mime_encode($payload), | ||
| 'payloadType' => $payloadtype, | ||
| 'signatures' => [ { 'sig' => mime_encode($signature) } ], | ||
| }; | ||
| my $spec = { | ||
| 'publicKey' => mime_encode($pubkey), | ||
| 'content' => { 'envelope' => canonical_json($envelope) }, | ||
| }; | ||
| my $entry = { | ||
| 'kind' => 'intoto', | ||
| 'apiVersion' => '0.0.1', | ||
| 'spec' => $spec, | ||
| }; | ||
| return upload_entry($server, $entry); | ||
| } | ||
|
|
||
| 1; |
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