问题

我试图导入一个现有的 PGP 公钥：

但我的公钥始终获得空值。此公钥是使用 ecdsa 算法创建的，您可以在此页面上看到使用的值：keyPropertes

这是我读取公钥的方法，如果用于创建密钥的算法是 RSA，则有效：

public static PGPPublicKey readPublicKey(InputStream in) throws IOException, PGPException {
        in = org.bouncycastle.openpgp.PGPUtil.getDecoderStream(in);

        PGPPublicKeyRingCollection pgpPub = new PGPPublicKeyRingCollection(in);

        //
        // 我们只需循环遍历集合，直到找到适用于加密的密钥，在实际情况下，您可能希望在这方面更加聪明一些。
        //
        PGPPublicKey key = null;

        //
        // 遍历密钥环。
        //
        Iterator<PGPPublicKeyRing> rIt = pgpPub.getKeyRings();

        while (key == null && rIt.hasNext()) {
            PGPPublicKeyRing kRing = rIt.next();
            Iterator<PGPPublicKey> kIt = kRing.getPublicKeys();
            while (key == null && kIt.hasNext()) {
                PGPPublicKey k = kIt.next();

                if (k.isEncryptionKey()) {
                    key = k;
                }
            }
        }

        if (key == null) {
            throw new IllegalArgumentException("无法在密钥环中找到加密密钥。");
        }

        return key;
}

您能在这方面给我提供大的帮助吗？

提前感谢，最好的问候

英文:

I trying to import a existint pgp public key :

But my public key always is getting null value.
This public key is create with algoritm ecdsa ,you can see the values used in this page : keyPropertes

This is my method to read the publicKey ,it works if the algoritms to creaate the key is Rsa :

public static PGPPublicKey readPublicKey(InputStream in) throws IOException, PGPException {
        in = org.bouncycastle.openpgp.PGPUtil.getDecoderStream(in);
 
        PGPPublicKeyRingCollection pgpPub = new PGPPublicKeyRingCollection(in);
 
        //
        // we just loop through the collection till we find a key suitable for encryption, in the real
        // world you would probably want to be a bit smarter about this.
        //
        PGPPublicKey key = null;
 
        //
        // iterate through the key rings.
        //
        Iterator&lt;PGPPublicKeyRing&gt; rIt = pgpPub.getKeyRings();
 
        while (key == null &amp;&amp; rIt.hasNext()) {
            PGPPublicKeyRing kRing = rIt.next();
            Iterator&lt;PGPPublicKey&gt; kIt = kRing.getPublicKeys();
            while (key == null &amp;&amp; kIt.hasNext()) {
                PGPPublicKey k = kIt.next();
 
                if (k.isEncryptionKey()) {
                    key = k;
                }
            }
        }
 
        if (key == null) {
            throw new IllegalArgumentException(&quot;Can&#39;t find encryption key in key ring.&quot;);
        }
 
        return key;
    }

can you give me a big help with this ?

Thanks in advance, best regards

答案1

得分: 0

您的代码正在寻找一个支持加密的密钥。在那个密钥块中的三个密钥都是ECDSA（算法19），只能用于签名验证，包括'认证'（密钥签名）和'授权'（SSH），实际上都是签名的一种形式。如果您确实想要加密，您需要一个_ECDH_（算法18）子密钥。请参考https://www.rfc-editor.org/rfc/rfc6637#section-5 。
如果您确实想要验证，您需要更改您的代码。

英文:

Your code is looking for an encryption-capable key. All three keys in that keyblock are ECDSA (algorithm 19) which is only usable for signature verification, including 'certification' (key signing) and 'authorization' (SSH) both of which are actually kinds of signatures. If you truly want encryption you need an ECDH (algorithm 18) subkey. See https://www.rfc-editor.org/rfc/rfc6637#section-5 .
If you truly want verification, you need to change your code.

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