UM1759 datasheet(33/50 Pages) STMICROELECTRONICS

33 / 50 page

DocID026279 Rev 1

33/50

UM1759

Wireless M-Bus firmware APIs

Table 46. WM-Bus encrypts PDU routine

Name

encrypt_pdu

Parameters

u32 *exp_key : expended key address

unsigned char * plain: input plain data address

int len: length

unsigned char * cipher: output cipher data address

Description

This routine Encrypts the incoming stream

Return type

None

Table 47. WM-Bus encrypts PDU CBC routine

Name

encrypt_pdu_cbc

Parameters

u32 *exp_key : expended key address

unsigned char * plain: input plain data address

int len: length

unsigned char * cipher: output cipher data address

Description

Encrypts the incoming stream using AES-CBC algorithm

Return type

None

Table 48. WM-Bus decrypts PDU CBC routine

Name

decrypt_pdu_cbc

Parameters

u32 *exp_key : expended key address

unsigned char * cipher: output cipher data address

int len: length

unsigned char * plain: input plain data address

Description

Decrypts the incoming stream

Return type

None

Table 49. WM-Bus application encryption routine

Name

WMBus_AppliEncrypt

Parameters

u32 *exp_key : expended key address

unsigned char * plain: input plain data address

int len: length

unsigned char * cipher: output cipher data address

Description

This routine does key expansion before encryption starts

Return type

None

UM1759 데이터시트(PDF) 33 Page - STMicroelectronics

UM1759 데이터시트(HTML) 33 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

데이터시트 다운로드

링크 URL