This function handles the RSA decryption with the private key components provided when initializing the RSA cryptographic core with the XSecure_RsaInitialize function.
Note: The Size passed in needs to match the key size used in the XSecure_RsaInitialize function..
Prototype
s32 XSecure_RsaPrivateDecrypt(XSecure_Rsa *InstancePtr, u8 *Input, u32 Size, u8 *Result);Parameters
The following table lists the XSecure_RsaPrivateDecrypt function arguments.
| Name | Description |
|---|---|
| InstancePtr | Pointer to the XSecure_Rsa instance. |
| Input | Pointer to the buffer which contains the input data to be decrypted. |
| Size |
Key size in bytes, Input size also should be same as Key size mentioned. Inputs supported are
|
| Result | Pointer to the buffer where resultant decrypted data to be stored . |
Returns
- XST_SUCCESS if decryption was successful.
- XSECURE_RSA_DATA_VALUE_ERROR - if input data is greater than modulus.
- XST_FAILURE - on RSA operation failure.