XSecure_AesDecryptInit - XSecure_AesDecryptInit - 2026.1 English

XSecure_AesDecryptInit - XSecure_AesDecryptInit - 2026.1 English - UG643

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

Document ID

UG643

Release Date

2026-06-23

Version

2026.1 English

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

Note: If all of the decryption data is available, use XSecure_AesDecryptData function.

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 is stored.
Size	Expected size of the data in bytes whereas the number of bytes provided is multiples of 4.
GcmTagAddr	Pointer to the GCM tag which requires verification during decryption of the data.

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