把读取文件的代码修改为直接从String对象中获取
时间: 2024-02-28 17:53:53 浏览: 23
如果你已经有了 PEM 格式的密钥字符串,可以将 `Files.newBufferedReader(Paths.get(pemFilePath))` 修改为 `new StringReader(pemString)`,然后将 `pemString` 替换为 PEM 格式的密钥字符串即可。修改后的代码示例:
```java
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.bouncycastle.openssl.jcajce.JceOpenSSLPKCS8EncryptorBuilder;
import org.bouncycastle.operator.InputDecryptorProvider;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.operator.OutputEncryptor;
import org.bouncycastle.operator.bc.BcDefaultDigestProvider;
import org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo;
import org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfoBuilder;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.StringReader;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyPair;
import java.security.PrivateKey;
public class PemToPkcs8 {
public static void main(String[] args) throws Exception {
String pemString = "PEM格式的密钥字符串";
String pkcs8FilePath = "path_to_pkcs8_file";
String password = "password";
// 读取 PEM 格式的密钥
JcaPEMKeyConverter converter = new JcaPEMKeyConverter();
KeyPair keyPair = converter.getKeyPair(converter.getPrivateKey(new StringReader(pemString)));
// 转换成 PKCS8 格式的密钥
PrivateKey privateKey = keyPair.getPrivate();
PrivateKeyInfo privateKeyInfo = PrivateKeyInfo.getInstance(privateKey.getEncoded());
PKCS8EncryptedPrivateKeyInfoBuilder builder = new PKCS8EncryptedPrivateKeyInfoBuilder(privateKeyInfo);
JceOpenSSLPKCS8EncryptorBuilder encryptorBuilder = new JceOpenSSLPKCS8EncryptorBuilder(PKCS8EncryptedPrivateKeyInfo.AES_256_CBC);
encryptorBuilder.setProvider("BC");
encryptorBuilder.setPasssword(password.toCharArray());
OutputEncryptor encryptor = encryptorBuilder.build();
InputDecryptorProvider decProv = encryptorBuilder.build(new BcDefaultDigestProvider());
PKCS8EncryptedPrivateKeyInfo encryptedPrivateKeyInfo = builder.build(encryptor);
byte[] pkcs8Encoded = encryptedPrivateKeyInfo.getEncoded();
// 将 PKCS8 格式的密钥写入文件
FileOutputStream fos = new FileOutputStream(pkcs8FilePath);
fos.write(pkcs8Encoded);
fos.close();
}
}
```
在上面的代码中,将 PEM 格式的密钥文件读取改为了 `new StringReader(pemString)`,并将 `pemString` 替换为 PEM 格式的密钥字符串。