java 使用 BouncyCastle 从 PEM Key 获取 KeyPair
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Get KeyPair from PEM Key with BouncyCastle
提问by user2119056
I have a PEM Key and I want to get a KeyPair with it and bouncycastle. I found this code which seems good but I have a cast exception.
我有一个 PEM 密钥，我想用它和 bouncycastle 获得一个密钥对。我发现这段代码看起来不错，但我有一个强制转换异常。
function loadKey() {
File privateKeyFile = new File(keyPath);
PEMParser pemParser = new PEMParser(new FileReader(privateKeyFile));
PEMDecryptorProvider decProv = new JcePEMDecryptorProviderBuilder().build(password.toCharArray());
JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC");
Object object = pemParser.readObject();
KeyPair kp;
if (object instanceof PEMEncryptedKeyPair) {
Logger.info("Encrypted key - we will use provided password");
kp = converter.getKeyPair(((PEMEncryptedKeyPair) object).decryptKeyPair(decProv));
}
else {
Logger.info("Unencrypted key - no password needed");
kp = converter.getKeyPair((PEMKeyPair) object);
}
return kp;
}
And it returns me : Unencrypted key - no password needed org.bouncycastle.asn1.x509.SubjectPublicKeyInfo cannot be cast to org.bouncycastle.openssl.PEMKeyPair
它返回给我：未加密的密钥 - 不需要密码 org.bouncycastle.asn1.x509.SubjectPublicKeyInfo 不能转换为 org.bouncycastle.openssl.PEMKeyPair
I tried several methods but i didn't succeed.
我尝试了几种方法，但没有成功。
Thanks to help me :)
感谢帮助我:)
回答by Sarang
If you have a private key that has passphrase you might get this exception. Try removing the passphrase:
如果您有一个带有密码短语的私钥，您可能会遇到此异常。尝试删除密码：
openssl rsa -in /path/to/originalkeywithpass.key -out /path/to/newkeywithnopass.key
