ref: c191c8825c094e3563094104b80df47c735c95fa
dir: /lib/crypto/sha3.myr/
use std
pkg crypto =
type keccak224 = struct
x : uint64[25]
tail : byte[144]
msglen : std.size
;;
type keccak256 = struct
x : uint64[25]
tail : byte[136]
msglen : std.size
;;
type keccak384 = struct
x : uint64[25]
tail : byte[104]
msglen : std.size
;;
type keccak512 = struct
x : uint64[25]
tail : byte[72]
msglen : std.size
;;
const keccak224 : (data : byte[:] -> byte[28])
const keccak224init : (st : keccak224# -> void)
const keccak224add : (st : keccak224#, data : byte[:] -> void)
const keccak224fin : (st : keccak224# -> byte[28])
const keccak256 : (data : byte[:] -> byte[32])
const keccak256init : (st : keccak256# -> void)
const keccak256add : (st : keccak256#, data : byte[:] -> void)
const keccak256fin : (st : keccak256# -> byte[32])
const keccak384 : (data : byte[:] -> byte[48])
const keccak384init : (st : keccak384# -> void)
const keccak384add : (st : keccak384#, data : byte[:] -> void)
const keccak384fin : (st : keccak384# -> byte[48])
const keccak512 : (data : byte[:] -> byte[64])
const keccak512init : (st : keccak512# -> void)
const keccak512add : (st : keccak512#, data : byte[:] -> void)
const keccak512fin : (st : keccak512# -> byte[64])
;;
const Nrounds = 24
const keccak224 = {data
var st
keccak224init(&st)
keccak224add(&st, data)
-> keccak224fin(&st)
}
const keccak224init = {st;
std.slfill(st.x[:], 0)
st.msglen = 0
}
const keccak224add = {st, data
st.msglen += keccak(st.x[:], data, 144, st.tail[:], st.msglen)
}
const keccak224fin = {st
var ret : byte[28]
fin(st.x[:], 144, st.tail[:], st.msglen)
std.putle64(ret[ 0: 8], st.x[0])
std.putle64(ret[ 8:16], st.x[1])
std.putle64(ret[16:24], st.x[2])
std.putle32(ret[24:28], st.x[3])
-> ret
}
const keccak256 = {data
var st
keccak256init(&st)
keccak256add(&st, data)
-> keccak256fin(&st)
}
const keccak256init = {st
std.slfill(st.x[:], 0)
st.msglen = 0
}
const keccak256add = {st, data
st.msglen += keccak(st.x[:], data, 136, st.tail[:], st.msglen)
}
const keccak256fin = {st
var ret : byte[32]
fin(st.x[:], 136, st.tail[:], st.msglen)
std.putle64(ret[ 0: 8], st.x[0])
std.putle64(ret[ 8:16], st.x[1])
std.putle64(ret[16:24], st.x[2])
std.putle64(ret[24:32], st.x[3])
-> ret
}
const keccak384 = {data
var st
keccak384init(&st)
keccak384add(&st, data)
-> keccak384fin(&st)
}
const keccak384init = {st
std.slfill(st.x[:], 0)
st.msglen = 0
}
const keccak384add = {st, data
st.msglen += keccak(st.x[:], data, 104, st.tail[:], st.msglen)
}
const keccak384fin = {st
var ret : byte[48]
fin(st.x[:], 104, st.tail[:], st.msglen)
std.putle64(ret[ 0: 8], st.x[0])
std.putle64(ret[ 8:16], st.x[1])
std.putle64(ret[16:24], st.x[2])
std.putle64(ret[24:32], st.x[3])
std.putle64(ret[32:40], st.x[4])
std.putle64(ret[40:48], st.x[5])
-> ret
}
const keccak512init = {st
std.slfill(st.x[:], 0)
st.msglen = 0
}
const keccak512 = {data
var st
keccak512init(&st)
keccak512add(&st, data)
-> keccak512fin(&st)
}
const keccak512add = {st, data
st.msglen += keccak(st.x[:], data, 72, st.tail[:], st.msglen)
}
const keccak512fin = {st
var ret : byte[64]
fin(st.x[:], 72, st.tail[:], st.msglen)
std.putle64(ret[ 0: 8], st.x[0])
std.putle64(ret[ 8:16], st.x[1])
std.putle64(ret[16:24], st.x[2])
std.putle64(ret[24:32], st.x[3])
std.putle64(ret[32:40], st.x[4])
std.putle64(ret[40:48], st.x[5])
std.putle64(ret[48:56], st.x[6])
std.putle64(ret[56:64], st.x[7])
-> ret
}
const fin = {x, blocksz, tail, msgsz
var ntail
ntail = msgsz % blocksz
std.slfill(tail[ntail:], 0)
tail[ntail] |= 0x01 /* wat */
tail[tail.len - 1] |= 0x80
addblock(x, tail)
keccakf(x)
}
const keccak = {x, data, blocksz, tail, msglen
var n, ntail, len
len = data.len
/* handle tail of last block */
ntail = msglen % blocksz
if ntail > 0
n = std.min(blocksz - ntail, data.len)
std.slcp(tail[ntail:ntail + n], data[:n])
data = data[n:]
if n + ntail < blocksz
-> n + ntail
;;
addblock(x, tail)
keccakf(x)
;;
while data.len >= blocksz
addblock(x, data)
keccakf(x)
data = data[blocksz:]
;;
std.slcp(tail[:data.len], data)
-> len
}
const keccakf = {x : uint64[:]
var bc0, bc1, bc2, bc3, bc4
var t0, t1, t2, t3, t4
for var round = 0; round < Nrounds; round++
/* theta(x) */
bc0 = x[0] ^ x[5] ^ x[10] ^ x[15] ^ x[20]
bc1 = x[1] ^ x[6] ^ x[11] ^ x[16] ^ x[21]
bc2 = x[2] ^ x[7] ^ x[12] ^ x[17] ^ x[22]
bc3 = x[3] ^ x[8] ^ x[13] ^ x[18] ^ x[23]
bc4 = x[4] ^ x[9] ^ x[14] ^ x[19] ^ x[24]
t0 = bc4 ^ ((bc1 << 1) | (bc1 >> 63))
t1 = bc0 ^ ((bc2 << 1) | (bc2 >> 63))
t2 = bc1 ^ ((bc3 << 1) | (bc3 >> 63))
t3 = bc2 ^ ((bc4 << 1) | (bc4 >> 63))
t4 = bc3 ^ ((bc0 << 1) | (bc0 >> 63))
x[ 0] ^= t0
x[ 5] ^= t0
x[10] ^= t0
x[15] ^= t0
x[20] ^= t0
x[ 1] ^= t1
x[ 6] ^= t1
x[11] ^= t1
x[16] ^= t1
x[21] ^= t1
x[ 2] ^= t2
x[ 7] ^= t2
x[12] ^= t2
x[17] ^= t2
x[22] ^= t2
x[ 3] ^= t3
x[ 8] ^= t3
x[13] ^= t3
x[18] ^= t3
x[23] ^= t3
x[ 4] ^= t4
x[ 9] ^= t4
x[14] ^= t4
x[19] ^= t4
x[24] ^= t4
/* rho(x) */
t0 = x[1]
t1 = x[10]; x[10] = ((t0 << 1) | (t0 >> 63)); t0 = t1
t1 = x[ 7]; x[ 7] = ((t0 << 3) | (t0 >> 61)); t0 = t1
t1 = x[11]; x[11] = ((t0 << 6) | (t0 >> 58)); t0 = t1
t1 = x[17]; x[17] = ((t0 << 10) | (t0 >> 54)); t0 = t1
t1 = x[18]; x[18] = ((t0 << 15) | (t0 >> 49)); t0 = t1
t1 = x[ 3]; x[ 3] = ((t0 << 21) | (t0 >> 43)); t0 = t1
t1 = x[ 5]; x[ 5] = ((t0 << 28) | (t0 >> 36)); t0 = t1
t1 = x[16]; x[16] = ((t0 << 36) | (t0 >> 28)); t0 = t1
t1 = x[ 8]; x[ 8] = ((t0 << 45) | (t0 >> 19)); t0 = t1
t1 = x[21]; x[21] = ((t0 << 55) | (t0 >> 9)); t0 = t1
t1 = x[24]; x[24] = ((t0 << 2) | (t0 >> 62)); t0 = t1
t1 = x[ 4]; x[ 4] = ((t0 << 14) | (t0 >> 50)); t0 = t1
t1 = x[15]; x[15] = ((t0 << 27) | (t0 >> 37)); t0 = t1
t1 = x[23]; x[23] = ((t0 << 41) | (t0 >> 23)); t0 = t1
t1 = x[19]; x[19] = ((t0 << 56) | (t0 >> 8)); t0 = t1
t1 = x[13]; x[13] = ((t0 << 8) | (t0 >> 56)); t0 = t1
t1 = x[12]; x[12] = ((t0 << 25) | (t0 >> 39)); t0 = t1
t1 = x[ 2]; x[ 2] = ((t0 << 43) | (t0 >> 21)); t0 = t1
t1 = x[20]; x[20] = ((t0 << 62) | (t0 >> 2)); t0 = t1
t1 = x[14]; x[14] = ((t0 << 18) | (t0 >> 46)); t0 = t1
t1 = x[22]; x[22] = ((t0 << 39) | (t0 >> 25)); t0 = t1
t1 = x[ 9]; x[ 9] = ((t0 << 61) | (t0 >> 3)); t0 = t1
t1 = x[ 6]; x[ 6] = ((t0 << 20) | (t0 >> 44)); t0 = t1
t1 = x[ 1]; x[ 1] = ((t0 << 44) | (t0 >> 20)); t0 = t1
/* chi */
for var i = 0; i < 25; i += 5
bc0 = x[i+0]
bc1 = x[i+1]
bc2 = x[i+2]
bc3 = x[i+3]
bc4 = x[i+4]
x[i+0] ^= ~bc1 & bc2
x[i+1] ^= ~bc2 & bc3
x[i+2] ^= ~bc3 & bc4
x[i+3] ^= ~bc4 & bc0
x[i+4] ^= ~bc0 & bc1
;;
/* iota */
x[0] ^= rconst[round]
;;
}
const addblock = {x, buf
x[0] ^= std.getle64(buf[ 0: 8])
x[1] ^= std.getle64(buf[ 8:16])
x[2] ^= std.getle64(buf[16:24])
x[3] ^= std.getle64(buf[24:32])
x[4] ^= std.getle64(buf[32:40])
x[5] ^= std.getle64(buf[40:48])
x[6] ^= std.getle64(buf[48:56])
x[7] ^= std.getle64(buf[56:64])
x[8] ^= std.getle64(buf[64:72])
if buf.len <= 72
-> void
;;
x[ 9] ^= std.getle64(buf[72:80]);
x[10] ^= std.getle64(buf[80:88]);
x[11] ^= std.getle64(buf[88:96]);
x[12] ^= std.getle64(buf[96:104]);
if buf.len <= 104
-> void
;;
x[13] ^= std.getle64(buf[104:112]);
x[14] ^= std.getle64(buf[112:120]);
x[15] ^= std.getle64(buf[120:128]);
x[16] ^= std.getle64(buf[128:136]);
if buf.len <= 136
-> void
;;
x[17] ^= std.getle64(buf[136:144]);
}
const rconst = [
0x0000000000000001ul, 0x0000000000008082ul, 0x800000000000808aul,
0x8000000080008000ul, 0x000000000000808bul, 0x0000000080000001ul,
0x8000000080008081ul, 0x8000000000008009ul, 0x000000000000008aul,
0x0000000000000088ul, 0x0000000080008009ul, 0x000000008000000aul,
0x000000008000808bul, 0x800000000000008bul, 0x8000000000008089ul,
0x8000000000008003ul, 0x8000000000008002ul, 0x8000000000000080ul,
0x000000000000800aul, 0x800000008000000aul, 0x8000000080008081ul,
0x8000000000008080ul, 0x0000000080000001ul, 0x8000000080008008ul
]