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LIBCRYPT: add HMAC-MD5

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This commit is contained in:
Peter Ferrie 2021-06-07 18:46:33 -07:00
parent 03603b431c
commit a414e9d080
1 changed files with 100 additions and 9 deletions
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109
LIB/LIBCRYPT.S.txt
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@ -138,6 +138,8 @@ J.MD5.XXXX .DA MD5.0015
.DA MD5.1631
.DA MD5.3247
.DA MD5.4863
L.HMACMD5.IPAD .DA HMACMD5.IPAD
L.HMACMD5.OPAD .DA HMACMD5.OPAD
.DA 0
*--------------------------------------
LIB.LOAD
@ -176,7 +178,7 @@ MD5 lda #1
>STYA ZPDataPtr
>SYSCALL2 strlen
>STYA ZPDataLen
.1 jsr MD4Init
.1 jsr MD4Init.I
bcs .9
pha save MD4/MD5 Context hMem
@ -201,6 +203,8 @@ MD5 lda #1
* ## RETURN VALUE
* A = hMem To S.MD4
*\--------------------------------------
MD4Init lda #0
.HS 2C BIT ABS
*/--------------------------------------
* ## MD5Init
* Initialize a MD5 computation
@ -211,8 +215,11 @@ MD5 lda #1
* ## RETURN VALUE
* A = hMem To S.MD5
*\--------------------------------------
MD4Init
MD5Init >LDYAI S.MD4
MD5Init lda #1
sta MD.MODE
MD4Init.I
MD5Init.I >LDYAI S.MD4
>SYSCALL2 getmem
bcs .9
@ -247,8 +254,6 @@ MD5Init >LDYAI S.MD4
* `>hLIBCRYPT,LIBCRYPT.MD4Update`
* ## RETURN VALUE
*\--------------------------------------
MD4Update lda #0
.HS 2C BIT ABS
*/--------------------------------------
* ## MD5Update
* Add Data to MD5 computation
@ -261,10 +266,8 @@ MD4Update lda #0
* `>hLIBCRYPT,LIBCRYPT.MD5Update`
* ## RETURN VALUE
*\--------------------------------------
MD5Update lda #1
sta MD.MODE
>PULLW ZPDataLen get LEN
MD4Update
MD5Update >PULLW ZPDataLen get LEN
>PULLW ZPDataPtr get DATA
>PULLA
@ -442,6 +445,91 @@ MD5Finalize.I ldy #S.MD4.FINALIZED
* https://github.com/fab13n/org.eclipse.mihini/blob/master/libs/hmac-md5/hmac_rfc2104/hmac-md5.c
*--------------------------------------
HMACMD5
>PULLW ZPHashPtr
>PULLW ZPDataPtr
>PULLW HMAC.DTemp
.1 jsr MD5Init
bcc .2
rts
.2 >LDYA ZPDataPtr
>SYSCALL2 strlen
>STYA ZPDataLen
cpy #65
bcs .3
tay
beq .4
.3 >PUSHW ZPHashPtr
jsr MD5Update.I
jsr MD5Finalize.I
>PULLW ZPHashPtr
>LDYA ZPCtxPtr
>STYA ZPDataPtr
lda #16
sta ZPDataLen
.4 ldy #0
.5 lda #$36
cpy ZPDataLen
bcs .6
eor (ZPDataPtr),y
.6 sta HMACMD5.IPAD,y
eor #$6A #$36 eor #$5C
sta HMACMD5.OPAD,y
iny
cpy #64
bne .5
stz HMACMD5.IPAD+64
stz HMACMD5.OPAD+64
jsr MD5Init.I
bcc .7
rts
.7 >LDYA L.HMACMD5.IPAD
>STYA ZPDataPtr
>LDYAI 64
>STYA ZPDataLen
>PUSHW ZPHashPtr
jsr MD5Update.I
>LDYA HMAC.DTemp
>STYA ZPDataPtr
>SYSCALL2 strlen
>STYA ZPDataLen
jsr MD5Update.I
jsr MD5Finalize.I
>PULLW ZPHashPtr
ldy #S.MD5.ABCD0
.8 lda (ZPCtxPtr),y
sta HMACMD5.IPAD,y
iny
cpy #S.MD5.ABCD0+16
bne .8
jsr MD5Init.I
bcc .9
rts
.9 >LDYA L.HMACMD5.OPAD
>STYA ZPDataPtr
>LDYAI 64
>STYA ZPDataLen
jsr MD5Update.I
>LDYA L.HMACMD5.IPAD
>STYA ZPDataPtr
ldy #16
sty ZPDataLen
jsr MD5Update.I
jsr MD5Finalize.I
rts
*--------------------------------------
* https://waterjuiceweb.wordpress.com/aes/
*--------------------------------------
@ -836,6 +924,9 @@ MD4.i
MD5.i .BS 1
MD4.BUFFER64
MD5.BUFFER64 .BS 64
HMAC.DTemp .BS 4
HMACMD5.IPAD .BS 65
HMACMD5.OPAD .BS 65
*--------------------------------------
MAN
SAVE usr/src/lib/libcrypt.s