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 here needs to match the key size used in the XSecure_RsaInitialize function
Prototype
int 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
- XSECURE_RSA_STATE_MISMATCH_ERROR - If State mismatch is occurred
- XST_FAILURE - On RSA operation failure