mirror of
https://github.com/logos-storage/plonky2.git
synced 2026-01-09 17:23:08 +00:00
92 lines
3.1 KiB
NASM
92 lines
3.1 KiB
NASM
/// Variables beginning with _ are in memory and not on the stack
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/// ripemd_update will receive and return the stack in the form:
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/// stack: *state, count, length, offset
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/// where offset is the virtual address of its final positional argument
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///
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/// def ripemd160(_input):
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/// state, count, _buffer = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0], 0, [0]*64
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/// state, count, _buffer = ripemd_update(state, count, _buffer, len(_input), _input)
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/// _padding = [0x80]+[0]*63
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/// _size = get_size(count)
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/// state, count, _buffer = ripemd_update(state, count, _buffer, padlength(count), _padding)
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/// state, count, _buffer = ripemd_update(state, count, _buffer, 8, _size)
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/// return process(state)
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global ripemd:
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// stack: ADDR, length
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%store_buffer // store _buffer at location 0
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%store_input // store _input at location 64
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// stack: length
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%stack (length) -> ( 0, length, 64, ripemd_1, ripemd_2, process)
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// stack: count = 0, length, offset = 64, ripemd_1, ripemd_2, process
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%stack (c, l, o, l1, l2, l3) -> (0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0, c, l, o, l1, l2, l3)
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// stack: 0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0, count, length, offset, *labels
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%jump(ripemd_update)
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ripemd_1:
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// stack: *state, count, length, offset, *labels
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DUP6
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DUP1
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// stack: count, count, *state, count, length, offset, *labels
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%store_padding // store _padding at location 64
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%store_size // store _size at location 128 [note: consumes count]
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%padlength
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// stack: padlength, *state, count, length, offset, *labels
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SWAP7
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POP
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// stack: *state, count, length, offset, *labels
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%jump(ripemd_update)
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ripemd_2:
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// stack: *state, count, length, offset, *labels
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%stack (a, b, c, d, e, count, length, offset) -> (a, b, c, d, e, count, 8, 128)
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// stack: *state, count, length, offset, *labels
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%jump(ripemd_update)
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process:
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// stack: a , b, c, d, e, count, length, offset
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%flip_bytes_u32
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// stack: a', b, c, d, e, *vars
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SWAP1
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%flip_bytes_32
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%shl_const(32)
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OR
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// stack: b' a', c, d, e, *vars
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SWAP1
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%flip_bytes_32
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%shl_const(64)
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OR
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// stack: c' b' a', d, e, *vars
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SWAP1
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%flip_bytes_32
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%shl_const(96)
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OR
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// stack: d' c' b' a', e, *vars
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SWAP1
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%flip_bytes_32
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%shl_const(96)
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OR
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// stack: e' d' c' b' a', *vars
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%stack (result, x, y, z) -> result
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// stack: result
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/// def padlength(count):
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/// x = 56 - (count // 8) % 64
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/// return x + 64*(x < 9)
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%macro padlength
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// stack: count
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%div_const(8)
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// stack: count // 8
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%mod_const(64)
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// stack: (count // 8) % 64
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PUSH 56
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SUB
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// stack: x = 56 - (count // 8) % 64
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DUP1
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%lt_const(9)
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// stack: x < 9 , x
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%mul_const(64)
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// stack: 64*(x < 9) , x
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ADD
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// stack: 64*(x < 9) + x
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%endmacro
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