diff options
Diffstat (limited to 'Zotlabs')
| -rw-r--r-- | Zotlabs/Lib/LDSignatures.php | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/Zotlabs/Lib/LDSignatures.php b/Zotlabs/Lib/LDSignatures.php index 7bc4fe957..ba7025927 100644 --- a/Zotlabs/Lib/LDSignatures.php +++ b/Zotlabs/Lib/LDSignatures.php @@ -15,7 +15,10 @@ class LDSignatures { return rsa_verify($ohash . $dhash,base64_decode($data['signature']['signatureValue']), $pubkey); } - + static function dopplesign(&$data,$channel) { + $data['magicEnv'] = self::salmon_sign($data,$channel); + return self::sign($data,$channel); + } static function sign($data,$channel) { $options = [ @@ -78,4 +81,34 @@ class LDSignatures { return jsonld_normalize($data,[ 'algorithm' => 'URDNA2015', 'format' => 'application/nquads' ]); } + static function salmon_sign($data,$channel) { + + $data = json_encode($data,JSON_UNESCAPED_SLASHES); + $data = base64url_encode($data, false); // do not strip padding + $data_type = 'application/activity+json'; + $encoding = 'base64url'; + $algorithm = 'RSA-SHA256'; + $keyhash = base64url_encode(z_root() . '/channel/' . $channel['channel_address']); + + $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$data); + + // precomputed base64url encoding of data_type, encoding, algorithm concatenated with periods + + $precomputed = '.' . base64url_encode($data_type,false) . '.YmFzZTY0dXJs.UlNBLVNIQTI1Ng=='; + + $signature = base64url_encode(rsa_sign($data . $precomputed,$channel['channel_prvkey'])); + + return ([ + 'meData' => $data, + 'meDataType' => $data_type, + 'meEncoding' => $encoding, + 'meAlgorithm' => $algorithm, + 'meCreator' => z_root() . '/channel/' . $channel['channel_address'] . '/public_key_pem', + 'meSignatureValue' => $signature + ]); + + } + + + }
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