Function pamoja_lorawan_block_mic_start 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_lorawan_block_mic_start(
    data_block_int_key: *const u8,
    session_cnt: u16,
    frag_index: u8,
    descriptor: *const u8,
    block_len: u32,
    out_mic: *mut *mut PamojaLorawanBlockMic,
) -> PamojaStatus

Starts a code over one session’s block, TS004-2.0.0 section 3.3.

Arguments

• data_block_int_key - the sixteen-byte key pamoja_lorawan_data_block_int_key derived.
• session_cnt - the session counter the setup carried.
• frag_index - which of the device’s sessions this is.
• descriptor - the four bytes the setup described the block with.
• block_len - the block’s length without its padding.
• out_mic - receives the code.

Returns

PamojaStatus::Ok on success, with *out_mic set to a handle the caller must release with pamoja_lorawan_block_mic_free.

Errors

Returns PamojaStatus::InvalidArgument for a null pointer.

Safety

data_block_int_key must point to sixteen readable bytes, descriptor to four, and out_mic must be writable.