From 8042f874f305bdc4a02f9b39efea9c9e0f1a82a7 Mon Sep 17 00:00:00 2001 From: Friendika Date: Thu, 28 Jul 2011 18:16:57 -0700 Subject: [PATCH] more progress on key conversion functions --- include/certfns.php | 97 +++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 94 insertions(+), 3 deletions(-) diff --git a/include/certfns.php b/include/certfns.php index 70d2b54a0e..db0e4645ef 100644 --- a/include/certfns.php +++ b/include/certfns.php @@ -19,12 +19,32 @@ function DerToPem($Der, $Private=false) return $result; } +function DerToRsa($Der) +{ + //Encode: + $Der = base64_encode($Der); + //Split lines: + $lines = str_split($Der, 65); + $body = implode("\n", $lines); + //Get title: + $title = 'RSA PUBLIC KEY'; + //Add wrapping: + $result = "-----BEGIN {$title}-----\n"; + $result .= $body . "\n"; + $result .= "-----END {$title}-----\n"; + + return $result; +} + + + + function pkcs8_encode($Modulus,$PublicExponent) { //Encode key sequence $modulus = new ASNValue(ASNValue::TAG_INTEGER); $modulus->SetIntBuffer($Modulus); $publicExponent = new ASNValue(ASNValue::TAG_INTEGER); - $publicExponent->SetInt($PublicExponent); + $publicExponent->SetIntBuffer($PublicExponent); $keySequenceItems = array($modulus, $publicExponent); $keySequence = new ASNValue(ASNValue::TAG_SEQUENCE); $keySequence->SetSequence($keySequenceItems); @@ -43,10 +63,81 @@ function pkcs8_encode($Modulus,$PublicExponent) { } +function pkcs1_encode($Modulus,$PublicExponent) { + //Encode key sequence + $modulus = new ASNValue(ASNValue::TAG_INTEGER); + $modulus->SetIntBuffer($Modulus); + $publicExponent = new ASNValue(ASNValue::TAG_INTEGER); + $publicExponent->SetIntBuffer($PublicExponent); + $keySequenceItems = array($modulus, $publicExponent); + $keySequence = new ASNValue(ASNValue::TAG_SEQUENCE); + $keySequence->SetSequence($keySequenceItems); + //Encode bit string + $bitStringValue = $keySequence->Encode(); + return $bitStringValue; + +// $bitStringValue = chr(0x00) . $bitStringValue; //Add unused bits byte +// $bitString = new ASNValue(ASNValue::TAG_BITSTRING); +// $bitString->Value = $bitStringValue; + //Encode body +// $bodyValue = "\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01\x05\x00" . $bitString->Encode(); +// $body = new ASNValue(ASNValue::TAG_SEQUENCE); +// $body->Value = $bodyValue; + //Get DER encoded public key: +// $PublicDER = $body->Encode(); +// return $PublicDER; +} + + function metopem($m,$e) { - $der = pkcs8_emcode($m,$e); - $key = DerToPem($der,true); + $der = pkcs8_encode($m,$e); + $key = DerToPem($der,false); return $key; } +function pubrsatome($key,&$m,&$e) { + require_once('library/asn1.php'); + require_once('include/salmon.php'); + + $lines = explode("\n",$key); + unset($lines[0]); + unset($lines[count($lines)]); + $x = base64_decode(implode('',$lines)); + + $r = ASN_BASE::parseASNString($x); + +// print_r($r); + + $m = base64url_decode($r[0]->asnData[0]->asnData); + $e = base64url_decode($r[0]->asnData[1]->asnData); + + +} + + +function rsatopem($key) { + pubrsatome($key,$m,$e); + return(metopem($m,$e)); +} + + +function pemtome($key,&$m,&$e) { + require_once('include/salmon.php'); + $lines = explode("\n",$key); + unset($lines[0]); + unset($lines[count($lines)]); + $x = base64_decode(implode('',$lines)); + + $r = ASN_BASE::parseASNString($x); + + $m = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[0]->asnData); + $e = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[1]->asnData); +} + +function metorsa($m,$e) { + $der = pkcs1_encode($m,$e); + $key = DerToRsa($der); + return $key; +} +