des Given final block not properly padded. Such issues can arise if a bad key is used during decryption.

This error message typically occurs when decrypting data using block cipher algorithms such as AES, but the decryption process is unable to correctly pad the final block. This can occur for a variety of reasons, including using an incorrect key or IV, or attempting to decrypt data that has been tampered with or corrupted. One common cause of this error is using a key that is different from the one used to encrypt the data. Double check that you are using the correct key for decryption. Another possible reason is that your data may have been corrupted or modified during transmission. You may want to check that your data has not been tampered with. If you are using a library or tool to perform the decryption, you may also want to check that you are using the correct algorithm and mode of operation. Some encryption libraries may require specific padding schemes or block sizes, and using the wrong configuration can result in errors. In general, it is important to ensure that your encryption and decryption processes are properly implemented and tested to avoid issues like this.

问题: "Given final block not properly padded. Such issues can arise if a bad key is used during decryption."这个错误是什么原因引起的？ 回答: 这个错误是因为解密过程中使用了错误的密钥导致的。具体原因可能是使用了错误的密钥进行解密，或者解密过程中使用的SecureRandom对象在加密时根据操作系统底层进行加密，导致每次加密后的结果不同，无法进行解密。解决这个问题的办法是使用正确的密钥进行解密，并且使用SecureRandom对象时指定特定的算法和种子。例如，可以使用SecureRandom.getInstance("SHA1PRNG")来获取SecureRandom对象，并通过setSeed方法设置种子。<em>1</em><em>2</em><em>3</em> #### 引用[.reference_title] - *1* [javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a](https://blog.csdn.net/kangweijian/article/details/127570890)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}} ] [.reference_item] - *2* [DES加密工具类在不同系统编码导致加密失败](https://blog.csdn.net/qq314499182/article/details/103177031)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}} ] [.reference_item] - *3* [“Given final block not properly padded. Such issues can arise if a bad key is used during“错误解决](https://blog.csdn.net/u012660464/article/details/128341544)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}} ] [.reference_item] [ .reference_list ]