我的工作基于 this answer
我正在尝试使用公钥验证文件。这是我的代码:
var hash = crypto.createHash("sha256");
hash.setEncoding("hex");
var fd = fs.createReadStream("path/to/my/file");
fd.on("end", function() {
hash.end();
var fileHash = hash.read();
const publicKey = fs.readFileSync('keys/public_key.pem');
const verifier = crypto.createVerify('RSA-SHA256');
const testSignature = verifier.verify(publicKey, fileSignature, 'base64');
console.log("testSignature: \n" + testSignature);
if (testSignature === fileHash)
console.log("ok");
else
console.log("not ok");
});
fd.pipe(hash);
我不知道这段代码是否正确,但是当我在控制台打印它时 testSignature
等于“false”。为什么 ?
testSignature:
false
加密哈希(fileSignature
变量)是正确的。 base64 字符串与我预期的相同。
知道我的代码有什么问题吗?谢谢
编辑
这是生成签名的代码:
var hash = crypto.createHash("sha256");
hash.setEncoding("hex");
var fd = fs.createReadStream("path/to/file");
fd.on("end", function() {
hash.end();
var fileHash = hash.read();
var privateKey = fs.readFileSync('keys/private_key.pem');
var signer = crypto.createSign('RSA-SHA256');
signer.update(fileHash);
fileSignature = signer.sign(privateKey, 'base64');
});
fd.pipe(hash);
最佳答案
假设 path/to/my/file
是您需要验证内容的文件,您必须将其内容提供给 verifier.update()
。尝试以下操作:
const input = fs.readFileSync('path/to/my/file'); // load data contents
const publicKey = fs.readFileSync('keys/public_key.pem').toString(); // load the signature, as a string!
const verifier = crypto.createVerify('RSA-SHA256');
verifier.update(input); // provide data contents to the verifier
const testSignature = verifier.verify(publicKey, fileSignature, 'base64');
console.log("testSignature: \n" + testSignature);
另外,确保 fileSignature
是一个字符串值而不是 Buffer .出于某种原因,如果您将 Buffer 对象传递给 verifier.verify
,我仍在尝试弄清楚为什么。它不会工作:
const fileSignatureBuffer = fs.readFileSync('signature.sha256');
const fileSignatureString = fileSignatureBuffer.toString();
// load public key, create the verifier, provide data contents to verifier, etc.
const testSignature = verifier.verify(publicKey, fileSignatureBuffer); // false
const testSignature = verifier.verify(publicKey, fileSignatureString, 'base64'); // true
编辑: 如果您使用散列作为签名步骤的输入,那么您必须在验证步骤中传递相同的散列。然后代码将如下所示:
const publicKey = fs.readFileSync('keys/public_key.pem').toString(); // load the signature, as a string!
const verifier = crypto.createVerify('RSA-SHA256');
verifier.update(fileSignature); // provide the file signature to the verifier
const testSignature = verifier.verify(publicKey, fileSignature, 'base64');
console.log("testSignature: \n" + testSignature);
关于javascript - 如何使用 rsa 公钥验证文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56062691/