有人可以告诉我 openssl_sign 示例有什么问题吗
下面是使用私有 2048 位 dsa 密钥对数据进行签名的 php 演示代码：
$priv_key = '-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----
';
$pkeyid = openssl_get_privatekey($priv_key);
if(empty($pkeyid)){
die("Can't load key id");
}
$data = $_GET['i'];
// compute signature
if(!openssl_sign($data, $signature, $pkeyid,OPENSSL_ALGO_SHA1)){
echo "Failed to sign data: $data";
}
// free the key from memory
openssl_free_key($pkeyid);
echo $signature;
该脚本总是在 openssl_sign 处失败。 我没有收到任何错误或失败，只是 openssl_sign 的输出为 FALSE 并且 $signature 为空
生成了密钥？
openssl dsaparam -out dsaparam.pem 2048
openssl gendsa -out privkey.pem dsaparam.pem
我已经使用What might be bad?
Here's php demo code to sign data with private 2048 bit dsa key:
$priv_key = '-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----
';
$pkeyid = openssl_get_privatekey($priv_key);
if(empty($pkeyid)){
die("Can't load key id");
}
$data = $_GET['i'];
// compute signature
if(!openssl_sign($data, $signature, $pkeyid,OPENSSL_ALGO_SHA1)){
echo "Failed to sign data: $data";
}
// free the key from memory
openssl_free_key($pkeyid);
echo $signature;
The script always fails at openssl_sign.
I'm getting no errors or failures, just FALSE at the output of openssl_sign and the $signature is empty
I've generated the key with
openssl dsaparam -out dsaparam.pem 2048
openssl gendsa -out privkey.pem dsaparam.pem
What could be wrong?
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当使用 DSA 签名时，您需要使用 OPENSSL_ALGO_DSS1 而不是 OPENSSL_ALGO_SHA1 作为哈希算法。
OpenSSL 命令行版本的帮助文件 说：
这是 OpenSSL 库的一个特性，DSS1 实际上与 SHA1 是相同的算法，但 OpenSSL 坚持认为，如果您将它与 DSA 一起使用，则您调用的是 DSS1！
When using DSA to sign things, you need to use OPENSSL_ALGO_DSS1 not OPENSSL_ALGO_SHA1 as the hashing algorithm.
The help file for the OpenSSL command-line version of this says:
This is an idiosyncrasy of the OpenSSL library, DSS1 is actually the same algorithm as SHA1 but OpenSSL insists that you call is DSS1 if you're using it with DSA!