diff options
| -rw-r--r-- | include/crypto.php | 51 |
1 files changed, 31 insertions, 20 deletions
diff --git a/include/crypto.php b/include/crypto.php index ab33ba096..1040ac29b 100644 --- a/include/crypto.php +++ b/include/crypto.php @@ -119,21 +119,27 @@ function crypto_encapsulate($data,$pubkey,$alg='aes256cbc') { } function other_encapsulate($data,$pubkey,$alg) { + if(! $pubkey) logger('no key. data: ' . $data); - $oaep = false; + // This default will change in the future. For now make it backward compatible. - if(strpos($alg,'.oaep')) { - $oaep = true; - $subalg = substr($alg,0,-5); - } - else { - $subalg = $alg; + $padding = OPENSSL_PKCS1_PADDING; + $base = $alg; + + $exts = explode('.',$alg); + if(count($exts) > 1) { + switch($exts[1]) { + case 'oaep': + $padding = OPENSSL_PKCS1_OAEP_PADDING; + break; + } + $base = $exts[0]; } - $fn = strtoupper($subalg) . '_encrypt'; + $fn = strtoupper($base) . '_encrypt'; if(function_exists($fn)) { // A bit hesitant to use openssl_random_pseudo_bytes() as we know @@ -151,14 +157,14 @@ function other_encapsulate($data,$pubkey,$alg) { $iv = openssl_random_pseudo_bytes(256); $result['data'] = base64url_encode($fn($data,$key,$iv),true); // log the offending call so we can track it down - if(! openssl_public_encrypt($key,$k,$pubkey,(($oaep) ? OPENSSL_PKCS1_OAEP_PADDING : OPENSSL_PKCS1_PADDING))) { + if(! openssl_public_encrypt($key,$k,$pubkey,$padding)) { $x = debug_backtrace(); logger('RSA failed. ' . print_r($x[0],true)); } $result['alg'] = $alg; $result['key'] = base64url_encode($k,true); - openssl_public_encrypt($iv,$i,$pubkey,(($oaep) ? OPENSSL_PKCS1_OAEP_PADDING : OPENSSL_PKCS1_PADDING)); + openssl_public_encrypt($iv,$i,$pubkey,$padding); $result['iv'] = base64url_encode($i,true); return $result; } @@ -229,20 +235,25 @@ function crypto_unencapsulate($data,$prvkey) { function other_unencapsulate($data,$prvkey,$alg) { - $oaep = false; + // This default will change in the future. For now make it backward compatible. - if(strpos($alg,'.oaep')) { - $oaep = true; - $subalg = substr($alg,0,-5); - } - else { - $subalg = $alg; + $padding = OPENSSL_PKCS1_PADDING; + $base = $alg; + + $exts = explode('.',$alg); + if(count($exts) > 1) { + switch($exts[1]) { + case 'oaep': + $padding = OPENSSL_PKCS1_OAEP_PADDING; + break; + } + $base = $exts[0]; } - $fn = strtoupper($subalg) . '_decrypt'; + $fn = strtoupper($base) . '_decrypt'; if(function_exists($fn)) { - openssl_private_decrypt(base64url_decode($data['key']),$k,$prvkey,(($oaep) ? OPENSSL_PKCS1_OAEP_PADDING : OPENSSL_PKCS1_PADDING)); - openssl_private_decrypt(base64url_decode($data['iv']),$i,$prvkey,(($oaep) ? OPENSSL_PKCS1_OAEP_PADDING : OPENSSL_PKCS1_PADDING)); + openssl_private_decrypt(base64url_decode($data['key']),$k,$prvkey,$padding); + openssl_private_decrypt(base64url_decode($data['iv']),$i,$prvkey,$padding); return $fn(base64url_decode($data['data']),$k,$i); } else { |