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https://github.com/friendica/friendica
synced 2025-04-29 11:44:24 +02:00
Crypto to src
move Crypto to src and Friendica\Util namespace
This commit is contained in:
Adam Magness
parent
6d6d83012c
commit
9e6bf79380
15 changed files with 317 additions and 230 deletions
260
src/Util/Crypto.php
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260
src/Util/Crypto.php
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<?php
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/**
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* @file src/Util/Crypto.php
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*/
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namespace Friendica\Util;
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use Friendica\Core\Config;
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require_once 'library/ASNValue.class.php';
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require_once 'library/asn1.php';
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/**
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* @brief Crypto class
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*/
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class Crypto
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{
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// supported algorithms are 'sha256', 'sha1'
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/**
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* @param string $data data
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* @param string $key key
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* @param string $alg algorithm
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* @return string
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*/
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public static function rsaSign($data, $key, $alg = 'sha256')
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{
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openssl_sign($data, $sig, $key, (($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
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return $sig;
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}
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/**
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* @param string $data data
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* @param string $sig signature
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* @param string $key key
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* @param string $alg algorithm
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* @return boolean
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*/
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public static function rsaVerify($data, $sig, $key, $alg = 'sha256')
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{
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return openssl_verify($data, $sig, $key, (($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
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}
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/**
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* @param string $Der der formatted string
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* @param string $Private key type optional, default false
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* @return string
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*/
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private static function DerToPem($Der, $Private = false)
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{
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//Encode:
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$Der = base64_encode($Der);
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//Split lines:
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$lines = str_split($Der, 65);
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$body = implode("\n", $lines);
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//Get title:
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$title = $Private ? 'RSA PRIVATE KEY' : 'PUBLIC KEY';
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//Add wrapping:
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$result = "-----BEGIN {$title}-----\n";
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$result .= $body . "\n";
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$result .= "-----END {$title}-----\n";
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return $result;
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}
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/**
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* @param string $Der der formatted string
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* @return string
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*/
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private static function DerToRsa($Der)
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{
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//Encode:
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$Der = base64_encode($Der);
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//Split lines:
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$lines = str_split($Der, 64);
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$body = implode("\n", $lines);
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//Get title:
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$title = 'RSA PUBLIC KEY';
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//Add wrapping:
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$result = "-----BEGIN {$title}-----\n";
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$result .= $body . "\n";
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$result .= "-----END {$title}-----\n";
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return $result;
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}
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/**
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* @param string $Modulus modulo
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* @param string $PublicExponent exponent
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* @return string
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*/
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private static function pkcs8Encode($Modulus, $PublicExponent)
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{
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//Encode key sequence
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$modulus = new ASNValue(ASNValue::TAG_INTEGER);
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$modulus->SetIntBuffer($Modulus);
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$publicExponent = new ASNValue(ASNValue::TAG_INTEGER);
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$publicExponent->SetIntBuffer($PublicExponent);
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$keySequenceItems = array($modulus, $publicExponent);
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$keySequence = new ASNValue(ASNValue::TAG_SEQUENCE);
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$keySequence->SetSequence($keySequenceItems);
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//Encode bit string
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$bitStringValue = $keySequence->Encode();
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$bitStringValue = chr(0x00) . $bitStringValue; //Add unused bits byte
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$bitString = new ASNValue(ASNValue::TAG_BITSTRING);
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$bitString->Value = $bitStringValue;
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//Encode body
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$bodyValue = "\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01\x05\x00" . $bitString->Encode();
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$body = new ASNValue(ASNValue::TAG_SEQUENCE);
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$body->Value = $bodyValue;
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//Get DER encoded public key:
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$PublicDER = $body->Encode();
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return $PublicDER;
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}
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/**
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* @param string $Modulus modulo
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* @param string $PublicExponent exponent
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* @return string
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*/
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private static function pkcs1Encode($Modulus, $PublicExponent)
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{
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//Encode key sequence
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$modulus = new ASNValue(ASNValue::TAG_INTEGER);
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$modulus->SetIntBuffer($Modulus);
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$publicExponent = new ASNValue(ASNValue::TAG_INTEGER);
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$publicExponent->SetIntBuffer($PublicExponent);
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$keySequenceItems = array($modulus, $publicExponent);
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$keySequence = new ASNValue(ASNValue::TAG_SEQUENCE);
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$keySequence->SetSequence($keySequenceItems);
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//Encode bit string
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$bitStringValue = $keySequence->Encode();
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return $bitStringValue;
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}
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/**
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* @param string $m modulo
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* @param string $e exponent
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* @return string
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*/
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public static function meToPem($m, $e)
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{
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$der = self::pkcs8Encode($m, $e);
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$key = self::DerToPem($der, false);
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return $key;
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}
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/**
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* @param string $key key
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* @param string $m modulo reference
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* @param object $e exponent reference
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* @return void
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*/
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private static function pubRsaToMe($key, &$m, &$e)
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{
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$lines = explode("\n", $key);
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unset($lines[0]);
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unset($lines[count($lines)]);
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$x = base64_decode(implode('', $lines));
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$r = ASN_BASE::parseASNString($x);
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$m = base64url_decode($r[0]->asnData[0]->asnData);
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$e = base64url_decode($r[0]->asnData[1]->asnData);
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}
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/**
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* @param string $key key
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* @return string
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*/
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public static function rsaToPem($key)
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{
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self::pubRsaToMe($key, $m, $e);
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return self::meToPem($m, $e);
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}
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/**
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* @param string $key key
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* @return string
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*/
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private static function pemToRsa($key)
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{
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self::pemToMe($key, $m, $e);
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return self::meToRsa($m, $e);
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}
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/**
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* @param string $key key
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* @param string $m modulo reference
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* @param string $e exponent reference
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* @return void
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*/
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private static function pemToMe($key, &$m, &$e)
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{
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$lines = explode("\n", $key);
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unset($lines[0]);
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unset($lines[count($lines)]);
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$x = base64_decode(implode('', $lines));
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$r = ASN_BASE::parseASNString($x);
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$m = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[0]->asnData);
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$e = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[1]->asnData);
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}
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/**
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* @param string $m modulo
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* @param string $e exponent
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* @return string
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*/
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private static function meToRsa($m, $e)
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{
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$der = self::pkcs1Encode($m, $e);
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$key = self::DerToRsa($der);
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return $key;
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}
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/**
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* @param string $pubkey public key
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* @return string
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*/
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public static function salmonKey($pubkey)
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{
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self::pemToMe($pubkey, $m, $e);
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return 'RSA' . '.' . base64url_encode($m, true) . '.' . base64url_encode($e, true);
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}
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/**
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* @param integer $bits number of bits
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* @return mixed
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*/
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public static function newKeypair($bits)
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{
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$openssl_options = array(
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'digest_alg' => 'sha1',
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'private_key_bits' => $bits,
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'encrypt_key' => false
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);
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$conf = Config::get('system', 'openssl_conf_file');
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if ($conf) {
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$openssl_options['config'] = $conf;
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}
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$result = openssl_pkey_new($openssl_options);
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if (empty($result)) {
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logger('new_keypair: failed');
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return false;
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}
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// Get private key
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$response = array('prvkey' => '', 'pubkey' => '');
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openssl_pkey_export($result, $response['prvkey']);
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// Get public key
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$pkey = openssl_pkey_get_details($result);
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$response['pubkey'] = $pkey["key"];
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return $response;
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}
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}
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