XSecure_AesDecryptInit - 2023.1 English

Standalone Library Documentation: BSP and Libraries Document Collection (UG643)

Document ID

UG643

Release Date

2023-05-16

Version

2023.1 English

This function initializes the AES engine for decryption and is required to be called before calling XSecure_AesDecryptUpdate.

Note: If all of the data to be decrypted is available, the XSecure_AesDecryptData function can be used instead.

u32 XSecure_AesDecryptInit(XSecure_Aes *InstancePtr, u8 *DecData, u32 Size, u8 *GcmTagAddr);

The following table lists the XSecure_AesDecryptInit function arguments.

Table 1. XSecure_AesDecryptInit Arguments
Name	Description
InstancePtr	Pointer to the XSecure_Aes instance.
DecData	Pointer in which decrypted data will be stored.
Size	Expected size of the data in bytes whereas the number of bytes provided should be multiples of 4.
GcmTagAddr	Pointer to the GCM tag which needs to be verified during decryption of the data.

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