Visible to Intel only — GUID: GUID-C9AE2AC8-FF2B-4C6F-9A46-890AB4F729B8
Visible to Intel only — GUID: GUID-C9AE2AC8-FF2B-4C6F-9A46-890AB4F729B8
mbx_sm4_gcm_update_iv_mb16
Processes an initialization vector (IV).
Syntax
mbx_status16 mbx_sm4_gcm_update_iv_mb16(const int8u* pa_iv[SM4_LINES], const int iv_len[SM4_LINES], SM4_GCM_CTX_mb16* p_context);
Include Files
crypto_mb/sm4_gcm.h
Parameters
pa_iv |
Array of pointers to the initialization vectors. |
iv_len |
Array of lengths of the initialization vectors in bytes. |
p_context |
Pointer to the context to keep intermediate results between calls. |
Description
Processes the initialization vector streams passed by pa_iv of a variable length passed through the iv_len array according to the GCM cipher scheme and updates the context with the processing result.
Return Values
The mbx_sm4_gcm_update_iv_mb16() function returns the status that indicates whether the operation is completed successfully or not. The status value of 0 indicates that the key schedule is successfully initialized. In case of a non-zero status value, MBX_GET_HIGH_PART_STS16() and MBX_GET_LOW_PART_STS16()` can help to get the low and high parts of mbx_status16, which can be analyzed separately with the MBX_GET_STS() call. The low part includes the first eight statuses, while the high part includes the remaining eight statuses for each operation.