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https://github.com/zellyn/a2audit.git
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c1664150da
- Translated "Have an Apple Split" routine to assembly. - Created build script to build autorunning floatbus.dsk disk image.
59 lines
1.1 KiB
Plaintext
59 lines
1.1 KiB
Plaintext
!to "shasum.o", plain
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* = $6000
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jmp test
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;; clear addresses:
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;; (http://apple2.org.za/gswv/a2zine/faqs/csa2pfaq.html#017)
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;; 06-09
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;; EB-EF
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;; FA-FD
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!addr src = $06
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!addr dest = $08
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!addr input = $eb
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h0: !32 0 ; return value (hash)
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h1: !32 0
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h2: !32 0
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h3: !32 0
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h4: !32 0
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ml: !32 0 ; message length
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w: !fill 64, 0
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w_next: !fill 64, 0
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kh0: !be32 $67452301 ; initial values for h0..h4
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kh1: !be32 $EFCDAB89
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kh2: !be32 $98BADCFE
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kh3: !be32 $10325476
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kh4: !be32 $C3D2E1F0
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k1: !be32 $5A827999 ; k = constants
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k2: !be32 $6ED9EBA1
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k3: !be32 $8F1BBCDC
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k4: !be32 $CA62C1D6
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test: jsr $ff2d
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rts
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!eof
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TODOs
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[ ] Routine to print n hex bytes (address, length (byte))
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[ ] Routine to get the next 16 values (64 bytes)
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[ ] Routine to get w[i] one i at a time, and rebuild next 16 values
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[ ] Routine to get the next 16 values (64 bytes) of input
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Chacha20 code isn't so useful, because it's little-endian.
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611B ADD32
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612B XOR32
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613A ROL16
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6152 RORX
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6165 ROL12
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616E ROL8
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6180 ROL7
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6189 PR32
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Needed sha1sum:
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- leftrotate 1 --> ?
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- leftrotate 5 --> ROL8, RORX 3
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- leftrotate 30 --> RORX 2
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