我收到此错误(在标题中)。我不知道为什么,请帮助。代码如下:
public static String decryptRSA(Context mContext, byte[] message) throws Exception {
InputStream in = mContext.getResources().openRawResource(R.raw.publicrsakey);
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(org.apache.commons.io.IOUtils.toByteArray(in));
PublicKey publicKey =
KeyFactory.getInstance("RSA").generatePublic(x509EncodedKeySpec);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
final String encryptedString = Base64.encode(cipher.doFinal(message));
return encryptedString;
}
编辑。最后,我使用带有 .der 扩展名的公钥文件(在它是 .crt 之前)解决了这个问题,并且有效的代码是:
InputStream in = mContext.getResources().openRawResource(R.raw.key);
CertificateFactory cf = CertificateFactory.getInstance("X509");
Certificate cert = cf.generateCertificate(new ByteArrayInputStream(org.apache.commons.io.IOUtils.toByteArray(in)));
PublicKey pubKey = cert.getPublicKey();
try
{
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
final String encryptedString = Base64.encode(cipher.doFinal(message));
return encryptedString;
}
catch (Exception e)
{
e.printStackTrace();
}
return "";
但是“divanov”回答了我提出的问题。
最佳答案
异常 error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag
意味着结果
InputStream in = mContext.getResources().openRawResource(R.raw.publicrsakey);
byte[] pubKeyBytes = org.apache.commons.io.IOUtils.toByteArray(in);
不代表 ASN.1 DER 编码的消息。将其以十六进制形式打印在某处以验证确切的问题是什么
Log.v("HEX", org.apache.commons.codec.binary.Hex.encodeHexString(pubKeyBytes);
关于java.lang.RuntimeException : error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/22842235/