Difference between revisions of "83Plus:BCALLs:8018"

Revision as of 14:33, 30 March 2005

Synopsis

Official Name: MD5Final

Other Name: FinishMD5

BCALL Address: 8018

Finishes an MD5 hash by adding padding and length bits.

Inputs

• 8269: (8 bytes) Holds the length in bits of the data hashed so far.
• 8292: (16 bytes) Current MD5 hash

Outputs

• 8292: (16 bytes) Completed MD5 hash

Destroys

• 8259: (16 bytes) Alternate registers (roughly equivalent to the AA, BB, CC, and DD registers specified in the MD5 standard.)
• 83A5: (64 bytes) Buffer holding data to be hashed.

Comments

This B_CALL "completes" a hash started by MD5Init and MD5Update.

Example

B_CALL MD5Init
ld bc,14
ld hl,String
B_CALL MD5Update
B_CALL MD5Final
; should give: f96b697d7cb7938d525a2f31aaf161d0

String: .db "message digest"