解密代码如下：     /**      * 私钥解密      *      * @param ciphertext 被加密字符串      * @return 解密后字符串      */     public static String decryptByPriKey(String ciphertext, String privateKeyStr) {         log.info("私钥解密 ciphertext：【{}】，privateKeyStr：【{}】",ciphertext ,privateKeyStr);         PrivateKey privateKey = null;         try {             Reader privateKeyReader = new StringReader(privateKeyStr);             PEMParser privatePemParser = new PEMParser(privateKeyReader);             Object privateObject = privatePemParser.readObject();             Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());             if (privateObject instanceof PEMKeyPair) {                 PEMKeyPair pemKeyPair = (PEMKeyPair) privateObject;                 JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC");                 privateKey = converter.getPrivateKey(pemKeyPair.getPrivateKeyInfo());             }             Cipher rsa = Cipher.getInstance("RSA/ECB/PKCS1Padding", "BC");             rsa.init(Cipher.DECRYPT_MODE, privateKey);             byte[] utf8 = rsa.doFinal(Base64.getDecoder().decode(ciphertext));             return new String(utf8, StandardCharsets.UTF_8);         } catch (Exception e) {             e.printStackTrace();         }         return null;     } 报错如下： org.bouncycastle.jcajce.provider.util.BadBlockException: unable to decrypt block at org.bouncycastle.jcajce.provider.asymmetric.rsa.CipherSpi.getOutput(Unknown Source) at org.bouncycastle.jcajce.provider.asymmetric.rsa.CipherSpi.engineDoFinal(Unknown Source) at javax.crypto.Cipher.doFinal(Cipher.java:2164) at com.qdum.workwechat.common.utils.vm.RSAUtils.decryptByPriKey(RSAUtils.java:87) at com.qdum.workwechat.common.utils.vm.WorkMsgBackUpUtil.main(WorkMsgBackUpUtil.java:282) Caused by: org.bouncycastle.crypto.InvalidCipherTextException: block incorrect at org.bouncycastle.crypto.encodings.PKCS1Encoding.decodeBlock(Unknown Source) at org.bouncycastle.crypto.encodings.PKCS1Encoding.processBlock(Unknown Source) ... 5 more 疑问，是什么原因会导致这个问题那，会话存档公钥配置错误？

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