如何在 Java 中使用 RSA_PKCS1_OAEP_PADDING 加密

Question

In Java,how to use RSA_PKCS1_OAEP_PADDING to encrypt? when i use this below ,it shows "javax.crypto.NoSuchPaddingException:RSA/ECB/OAEPPadding unavailable with RSA".

cipher = Cipher.getInstance("RSA/ECB/OAEPPadding", provider);

Can you tell me the correct answer?thanks!

Answer 1

Try without specifying a provider, that is:

cipher = Cipher.getInstance("RSA/ECB/OAEPPadding");

If you want to use a specific provider, provide more information about which provider you are using, and what evidence you have that the provider supports OAEP padding.

There is meta-data in the provider itself about the services it provides and their details. We can look into that further if needed, but I think the answer here is simply that this provider doesn't make any provision for OAEP.