How to solve Bad Padding Exception issue in RSA encryption Logic

The javax.crypto.BadPaddingException: error:04000089:RSA routines:OPENSSL_internal:PKCS_DECODING_ERROR error typically occurs when there is an issue with the padding of the data being decrypted using RSA. Here are some common reasons for this error and how to resolve them:

Incorrect Key Usage: Ensure that the same key used for encryption is being used for decryption. If different keys are used, decryption will fail.
Data Integrity: Verify that the data being decrypted has not been altered. Even a small change can cause padding errors.
Correct Padding Scheme: Make sure that you are using the correct padding scheme during both encryption and decryption. For example, if you used PKCS#1 v1.5 padding during encryption, ensure the same is used during decryption.

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sasikala s1y ago
Accepted answer
The javax.crypto.BadPaddingException: error:04000089:RSA routines:OPENSSL_internal:PKCS_DECODING_ERROR error typically occurs when there is an issue with the padding of the data being decrypted using RSA. Here are some common reasons for this error and how to resolve them:
1. Incorrect Key Usage: Ensure that the same key used for encryption is being used for decryption. If different keys are used, decryption will fail.
2. Data Integrity: Verify that the data being decrypted has not been altered. Even a small change can cause padding errors.
3. Correct Padding Scheme: Make sure that you are using the correct padding scheme during both encryption and decryption. For example, if you used PKCS#1 v1.5 padding during encryption, ensure the same is used during decryption.
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