我一直在忙于尝试使用 webcrypto api 在浏览器客户端和使用 openssl 的 PHP 服务器之间建立安全交换。我已经尽可能地分解了东西。我写了一些 javascript 来生成一个 key 对，打印出私有(private)值和公共(public)值，加密一个简单的字符串并打印出来。
我已将这些值直接复制到一个简单的 PHP 脚本中。尝试使用 javascipt 中的值对其进行解码。
编码和解码在 javascript 中正常工作(如下所示)，在 php 中解码则不能(也发布在 javascript 下方)。我似乎也找不到在 PHP 中设置 SHA-512 声明的位置。有没有人有过这种交流的经验，也许能给我指明正确的方向。之所以选择 RSA-OAEP，是因为它受 chrome、mozilla、IE11 和 Safari 以及 PHP 的支持。
亲切的问候， 基甸
// JavaScript Document
var keyPair;
var pemPublicKey;
var pemPrivateKey;
var _spki;
var _pkcs8;
window.crypto.subtle.generateKey({
name: "RSA-OAEP",
modulusLength: 2048,
publicExponent: new Uint8Array([1, 0, 1]), // 24 bit representation of 65537
hash: {name: "SHA-512"}
}, true, ["encrypt", "decrypt"])
.then(function(newKeyPair) {
keyPair = newKeyPair;
return keyPair;
})
.then(function(keyPair) {
window.crypto.subtle.exportKey('spki', keyPair.publicKey)
.then(function(spki) {
_spki = spki;
var pemPublicKey = convertBinaryToPem(spki, "PUBLIC KEY");
document.writeln(pemPublicKey);
sendToPhp();
});
window.crypto.subtle.exportKey('pkcs8', keyPair.privateKey)
.then(function(pkcs8) {
_pkcs8 = pkcs8;
var pemPrivateKey = convertBinaryToPem(pkcs8, "PRIVATE KEY");
document.writeln(pemPrivateKey);
})
});
function sendToPhp() {
window.crypto.subtle.importKey('spki', _spki, {name:"RSA-OAEP", hash: {name: "SHA-512"}}, false, ["encrypt"])
.then(function(cryptokey) {
window.crypto.subtle.encrypt({ name: "RSA-OAEP"}, cryptokey, str2ab('mijn geheimpje') )
.then(function(encrypted){
//returns an ArrayBuffer containing the encrypted data
document.writeln(arrayBufferToBase64String(encrypted));
receivedFromPhp(arrayBufferToBase64String(encrypted));
});
});
}
function receivedFromPhp(encrypted) {
window.crypto.subtle.importKey('pkcs8', _pkcs8, {name:"RSA-OAEP", hash: {name: "SHA-512"}}, false, ["decrypt"])
.then(function(cryptokey) {
window.crypto.subtle.decrypt({ name: "RSA-OAEP"}, cryptokey, base64StringToArrayBuffer(encrypted) )
.then(function(decrypted){
//returns an ArrayBuffer containing the encrypted data
var decryp = ab2str(decrypted);
debugger;
});
});
}
function ab2str(buf) {
return String.fromCharCode.apply(null, new Uint16Array(buf));
}
function str2ab(str) {
var buf = new ArrayBuffer(str.length*2); // 2 bytes for each char
var bufView = new Uint16Array(buf);
for (var i=0, strLen=str.length; i<strLen; i++) {
bufView[i] = str.charCodeAt(i);
}
return buf;
}
function base64StringToArrayBuffer(base64) {
var binary_string = atob(base64);
var len = binary_string.length;
var bytes = new Uint8Array( len );
for (var i = 0; i < len; i++) {
bytes[i] = binary_string.charCodeAt(i);
}
return bytes.buffer;
}
function arrayBufferToBase64String(arrayBuffer) {
var byteArray = new Uint8Array(arrayBuffer)
var byteString = '';
for (var i=0; i<byteArray.byteLength; i++) {
byteString += String.fromCharCode(byteArray[i]);
}
return btoa(byteString);
}
function convertBinaryToPem(binaryData, label) {
var base64Cert = arrayBufferToBase64String(binaryData);
var pemCert = "-----BEGIN " + label + "-----\r\n";
var nextIndex = 0;
var lineLength;
while (nextIndex < base64Cert.length) {
if (nextIndex + 64 <= base64Cert.length) {
pemCert += base64Cert.substr(nextIndex, 64) + "\r\n";
} else {
pemCert += base64Cert.substr(nextIndex) + "\r\n";
}
nextIndex += 64;
}
pemCert += "-----END " + label + "-----\r\n";
return pemCert;
}<?php
error_reporting(E_ALL);
ini_set("display_errors", 1);
$pemPublicKey = '-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvzJ07T/SiZsUPfC4ymwj
G/TqVdO04QZRUMcsmHeUG0BawSxlwoz+0YD48UZFYyTetw3egoasQfkvOPIUKuqq
mPEXwGsVlLbkqvPsgNA2K6Zye8El9DEp83eoPqylopU0L9zSnQp9VaNpSgsOlltr
0RRyq3q8gBJb7PkzuDzmXrr5KEuGmkLmOE3TH0Ck9u+c4xE87g3s5HtQ6uGa6jB6
JooTN1edPum+kBJdJajOW5FvOfDnEHQBsKZPd4HiYcOlM7crt2Y9XnBSBIIZ1uR6
a4Qs+EP6CwczPA6/J5a+GOV9ch1xZLsW5JuO55lCDpwrvKr7VVqwQG3qNewk8vVA
iwIDAQAB
-----END PUBLIC KEY-----';
$pemPrivateKey = '-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----';
$encrMessage = 'd14QunL/M8XwYvsogvjkExe24LP1aYY51OM3ACyl3xJam5DnhwBB4o+cf6/tRaBp+AzoZYQuemd7IP3NjYYEHj23DPaxDzoPNfHoWxNfKC9xqcgoLDywEjJvwtvNaJDAO+mGfNHfsi4TFtsSFRvJ8rkxNOYhoprD2XMIEeklSpFHC3V9hnadHunP+Vgwc5TNRCRPZ1AEcEiSlNmBkvd8pB+iMyAwA7P2tmamrpNQYbEjoQu0mCNPUVrft1QI1IS4XWAL4+HP2vBWV41AttL8XjFxicrR3mXXZVukwiu7PJFPjwW9cLGEgTMkcpBkPZoTGPefiCQYVh4LEq6fYb4kdw==';
//just for testing if it works with the public/private keys supplied by javascript, which it does
//$publicKey = openssl_pkey_get_public($pemPublicKey);
//openssl_public_encrypt('mijn geheimpje',$encr,$publicKey,OPENSSL_PKCS1_OAEP_PADDING);
//$encr64 = base64_encode($encr);
$privateKey = openssl_get_privatekey($pemPrivateKey);
if (!$privateKey) {
echo "Cannot get private key";
}
$encr = base64_decode($encrMessage);
$b = openssl_private_decrypt($encr,$decr,$privateKey,OPENSSL_PKCS1_OAEP_PADDING);
if (!$b) {
echo "Cannot decode message";
}
echo "String decrypt :". $decr;
?>最佳答案
我猜我解决了我自己的问题。我玩弄了 phpseclib 并得到了关于散列错误的提示。用 SHA-1 替换 SHA-512 后，它终于起作用了。在 PHP 文档中，它说 crypt libe 默认为 SHA-1。事情应该与 phpseclib 一起正常工作，完全独立于 open_ssl php 库。但它没有。仍然不知道为什么会这样。但至少我有一个可行的解决方案...希望这可以帮助其他人处理同样的事情。
基甸
关于javascript - RSA-OAEP SHA-512 从 Javascriptwebcrypt api 加密/解密到 PHP openssl？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29615420/