ref: a8ab64015b9419f0a32c1162c2442c27163dff66
dir: /lib/crypto/sha1.myr/
use std
use "hash"
pkg crypto =
type sha1
impl hash sha1
/* legacy/convenience */
const sha1 : (data : byte[:] -> byte[20])
const sha1init : (st : sha1# -> void)
const sha1add : (st : sha1#, data : byte[:] -> void)
const sha1fin : (st : sha1# -> byte[20])
;;
type sha1 = struct
a : uint32
b : uint32
c : uint32
d : uint32
e : uint32
tail : byte[64]
msglen : uint64
;;
const sha1 = {data
var st
sha1init(&st)
sha1add(&st, data)
-> sha1fin(&st)
}
const sha1init = {st
hinit(st)
}
const sha1add = {st, msg
hadd(st, msg)
}
const sha1fin = {st
var r : byte[20]
hfin(st, r[:])
-> r
}
impl hash sha1 =
Blocksz = 64
Hashsz = 20
hinit = {st
st.a = 0x67452301
st.b = 0xefcdab89
st.c = 0x98badcfe
st.d = 0x10325476
st.e = 0xc3d2e1f0
st.msglen = 0
}
hadd = {st, data
var n, ntail
ntail = st.msglen % 64
st.msglen += data.len
if ntail > 0
n = std.min(64 - ntail, data.len)
std.slcp(st.tail[ntail:ntail + n], data[:n])
data = data[n:]
if n + ntail < 64
-> void
;;
step(st, st.tail[:])
;;
while data.len >= 64
step(st, data[:64])
data = data[64:]
;;
std.slcp(st.tail[:data.len], data)
}
hfin = {st, r
var ntail
/* append first padding block */
ntail = st.msglen % 64
st.tail[ntail++] = 0x80
std.slfill(st.tail[ntail:], 0)
if 64 - ntail < 8
step(st, st.tail[:])
std.slfill(st.tail[:], 0)
;;
/* append size block */
st.tail[56] = ((st.msglen * 8) >> 56 : byte)
st.tail[57] = ((st.msglen * 8) >> 48 : byte)
st.tail[58] = ((st.msglen * 8) >> 40 : byte)
st.tail[59] = ((st.msglen * 8) >> 32 : byte)
st.tail[60] = ((st.msglen * 8) >> 24 : byte)
st.tail[61] = ((st.msglen * 8) >> 16 : byte)
st.tail[62] = ((st.msglen * 8) >> 8 : byte)
st.tail[63] = ((st.msglen * 8) >> 0 : byte)
step(st, st.tail[:])
r[0] = (st.a >> 24 : byte)
r[1] = (st.a >> 16 : byte)
r[2] = (st.a >> 8 : byte)
r[3] = (st.a >> 0 : byte)
r[4] = (st.b >> 24 : byte)
r[5] = (st.b >> 16 : byte)
r[6] = (st.b >> 8 : byte)
r[7] = (st.b >> 0 : byte)
r[8] = (st.c >> 24 : byte)
r[9] = (st.c >> 16 : byte)
r[10] = (st.c >> 8 : byte)
r[11] = (st.c >> 0 : byte)
r[12] = (st.d >> 24 : byte)
r[13] = (st.d >> 16 : byte)
r[14] = (st.d >> 8 : byte)
r[15] = (st.d >> 0 : byte)
r[16] = (st.e >> 24 : byte)
r[17] = (st.e >> 16 : byte)
r[18] = (st.e >> 8 : byte)
r[19] = (st.e >> 0 : byte)
}
;;
const K0 = 0x5a827999
const K1 = 0x6ed9eba1
const K2 = 0x8f1bbcdc
const K3 = 0xCA62C1D6
const step = {st, msg
var a, b, c, d, e
var s00, s01, s02, s03, s04, s05, s06, s07
var s08, s09, s10, s11, s12, s13, s14, s15
var t
a = st.a
b = st.b
c = st.c
d = st.d
e = st.e
s00 = unpack(msg[ 0: 4])
s01 = unpack(msg[ 4: 8])
s02 = unpack(msg[ 8:12])
s03 = unpack(msg[12:16])
s04 = unpack(msg[16:20])
s05 = unpack(msg[20:24])
s06 = unpack(msg[24:28])
s07 = unpack(msg[28:32])
s08 = unpack(msg[32:36])
s09 = unpack(msg[36:40])
s10 = unpack(msg[40:44])
s11 = unpack(msg[44:48])
s12 = unpack(msg[48:52])
s13 = unpack(msg[52:56])
s14 = unpack(msg[56:60])
s15 = unpack(msg[60:64])
e += (a << 5 | a >> 27) + (d ^ (b & (c ^ d))) + s00 + K0; b = b << 30 | b >> 2
d += (e << 5 | e >> 27) + (c ^ (a & (b ^ c))) + s01 + K0; a = a << 30 | a >> 2
c += (d << 5 | d >> 27) + (b ^ (e & (a ^ b))) + s02 + K0; e = e << 30 | e >> 2
b += (c << 5 | c >> 27) + (a ^ (d & (e ^ a))) + s03 + K0; d = d << 30 | d >> 2
a += (b << 5 | b >> 27) + (e ^ (c & (d ^ e))) + s04 + K0; c = c << 30 | c >> 2
e += (a << 5 | a >> 27) + (d ^ (b & (c ^ d))) + s05 + K0; b = b << 30 | b >> 2
d += (e << 5 | e >> 27) + (c ^ (a & (b ^ c))) + s06 + K0; a = a << 30 | a >> 2
c += (d << 5 | d >> 27) + (b ^ (e & (a ^ b))) + s07 + K0; e = e << 30 | e >> 2
b += (c << 5 | c >> 27) + (a ^ (d & (e ^ a))) + s08 + K0; d = d << 30 | d >> 2
a += (b << 5 | b >> 27) + (e ^ (c & (d ^ e))) + s09 + K0; c = c << 30 | c >> 2
e += (a << 5 | a >> 27) + (d ^ (b & (c ^ d))) + s10 + K0; b = b << 30 | b >> 2
d += (e << 5 | e >> 27) + (c ^ (a & (b ^ c))) + s11 + K0; a = a << 30 | a >> 2
c += (d << 5 | d >> 27) + (b ^ (e & (a ^ b))) + s12 + K0; e = e << 30 | e >> 2
b += (c << 5 | c >> 27) + (a ^ (d & (e ^ a))) + s13 + K0; d = d << 30 | d >> 2
a += (b << 5 | b >> 27) + (e ^ (c & (d ^ e))) + s14 + K0; c = c << 30 | c >> 2
e += (a << 5 | a >> 27) + (d ^ (b & (c ^ d))) + s15 + K0; b = b << 30 | b >> 2
t = s13 ^ s08 ^ s02 ^ s00; s00 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (c ^ (a & (b ^ c))) + s00 + K0; a = a << 30 | a >> 2
t = s14 ^ s09 ^ s03 ^ s01; s01 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (b ^ (e & (a ^ b))) + s01 + K0; e = e << 30 | e >> 2
t = s15 ^ s10 ^ s04 ^ s02; s02 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (a ^ (d & (e ^ a))) + s02 + K0; d = d << 30 | d >> 2
t = s00 ^ s11 ^ s05 ^ s03; s03 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (e ^ (c & (d ^ e))) + s03 + K0; c = c << 30 | c >> 2
t = s01 ^ s12 ^ s06 ^ s04; s04 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s04 + K1; b = b << 30 | b >> 2
t = s02 ^ s13 ^ s07 ^ s05; s05 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s05 + K1; a = a << 30 | a >> 2
t = s03 ^ s14 ^ s08 ^ s06; s06 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s06 + K1; e = e << 30 | e >> 2
t = s04 ^ s15 ^ s09 ^ s07; s07 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s07 + K1; d = d << 30 | d >> 2
t = s05 ^ s00 ^ s10 ^ s08; s08 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s08 + K1; c = c << 30 | c >> 2
t = s06 ^ s01 ^ s11 ^ s09; s09 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s09 + K1; b = b << 30 | b >> 2
t = s07 ^ s02 ^ s12 ^ s10; s10 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s10 + K1; a = a << 30 | a >> 2
t = s08 ^ s03 ^ s13 ^ s11; s11 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s11 + K1; e = e << 30 | e >> 2
t = s09 ^ s04 ^ s14 ^ s12; s12 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s12 + K1; d = d << 30 | d >> 2
t = s10 ^ s05 ^ s15 ^ s13; s13 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s13 + K1; c = c << 30 | c >> 2
t = s11 ^ s06 ^ s00 ^ s14; s14 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s14 + K1; b = b << 30 | b >> 2
t = s12 ^ s07 ^ s01 ^ s15; s15 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s15 + K1; a = a << 30 | a >> 2
t = s13 ^ s08 ^ s02 ^ s00; s00 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s00 + K1; e = e << 30 | e >> 2
t = s14 ^ s09 ^ s03 ^ s01; s01 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s01 + K1; d = d << 30 | d >> 2
t = s15 ^ s10 ^ s04 ^ s02; s02 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s02 + K1; c = c << 30 | c >> 2
t = s00 ^ s11 ^ s05 ^ s03; s03 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s03 + K1; b = b << 30 | b >> 2
t = s01 ^ s12 ^ s06 ^ s04; s04 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s04 + K1; a = a << 30 | a >> 2
t = s02 ^ s13 ^ s07 ^ s05; s05 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s05 + K1; e = e << 30 | e >> 2
t = s03 ^ s14 ^ s08 ^ s06; s06 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s06 + K1; d = d << 30 | d >> 2
t = s04 ^ s15 ^ s09 ^ s07; s07 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s07 + K1; c = c << 30 | c >> 2
t = s05 ^ s00 ^ s10 ^ s08; s08 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + ((b & (c | d)) | (c & d)) + s08 + K2; b = b << 30 | b >> 2
t = s06 ^ s01 ^ s11 ^ s09; s09 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + ((a & (b | c)) | (b & c)) + s09 + K2; a = a << 30 | a >> 2
t = s07 ^ s02 ^ s12 ^ s10; s10 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + ((e & (a | b)) | (a & b)) + s10 + K2; e = e << 30 | e >> 2
t = s08 ^ s03 ^ s13 ^ s11; s11 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + ((d & (e | a)) | (e & a)) + s11 + K2; d = d << 30 | d >> 2
t = s09 ^ s04 ^ s14 ^ s12; s12 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + ((c & (d | e)) | (d & e)) + s12 + K2; c = c << 30 | c >> 2
t = s10 ^ s05 ^ s15 ^ s13; s13 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + ((b & (c | d)) | (c & d)) + s13 + K2; b = b << 30 | b >> 2
t = s11 ^ s06 ^ s00 ^ s14; s14 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + ((a & (b | c)) | (b & c)) + s14 + K2; a = a << 30 | a >> 2
t = s12 ^ s07 ^ s01 ^ s15; s15 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + ((e & (a | b)) | (a & b)) + s15 + K2; e = e << 30 | e >> 2
t = s13 ^ s08 ^ s02 ^ s00; s00 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + ((d & (e | a)) | (e & a)) + s00 + K2; d = d << 30 | d >> 2
t = s14 ^ s09 ^ s03 ^ s01; s01 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + ((c & (d | e)) | (d & e)) + s01 + K2; c = c << 30 | c >> 2
t = s15 ^ s10 ^ s04 ^ s02; s02 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + ((b & (c | d)) | (c & d)) + s02 + K2; b = b << 30 | b >> 2
t = s00 ^ s11 ^ s05 ^ s03; s03 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + ((a & (b | c)) | (b & c)) + s03 + K2; a = a << 30 | a >> 2
t = s01 ^ s12 ^ s06 ^ s04; s04 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + ((e & (a | b)) | (a & b)) + s04 + K2; e = e << 30 | e >> 2
t = s02 ^ s13 ^ s07 ^ s05; s05 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + ((d & (e | a)) | (e & a)) + s05 + K2; d = d << 30 | d >> 2
t = s03 ^ s14 ^ s08 ^ s06; s06 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + ((c & (d | e)) | (d & e)) + s06 + K2; c = c << 30 | c >> 2
t = s04 ^ s15 ^ s09 ^ s07; s07 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + ((b & (c | d)) | (c & d)) + s07 + K2; b = b << 30 | b >> 2
t = s05 ^ s00 ^ s10 ^ s08; s08 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + ((a & (b | c)) | (b & c)) + s08 + K2; a = a << 30 | a >> 2
t = s06 ^ s01 ^ s11 ^ s09; s09 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + ((e & (a | b)) | (a & b)) + s09 + K2; e = e << 30 | e >> 2
t = s07 ^ s02 ^ s12 ^ s10; s10 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + ((d & (e | a)) | (e & a)) + s10 + K2; d = d << 30 | d >> 2
t = s08 ^ s03 ^ s13 ^ s11; s11 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + ((c & (d | e)) | (d & e)) + s11 + K2; c = c << 30 | c >> 2
t = s09 ^ s04 ^ s14 ^ s12; s12 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s12 + K3; b = b << 30 | b >> 2
t = s10 ^ s05 ^ s15 ^ s13; s13 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s13 + K3; a = a << 30 | a >> 2
t = s11 ^ s06 ^ s00 ^ s14; s14 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s14 + K3; e = e << 30 | e >> 2
t = s12 ^ s07 ^ s01 ^ s15; s15 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s15 + K3; d = d << 30 | d >> 2
t = s13 ^ s08 ^ s02 ^ s00; s00 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s00 + K3; c = c << 30 | c >> 2
t = s14 ^ s09 ^ s03 ^ s01; s01 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s01 + K3; b = b << 30 | b >> 2
t = s15 ^ s10 ^ s04 ^ s02; s02 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s02 + K3; a = a << 30 | a >> 2
t = s00 ^ s11 ^ s05 ^ s03; s03 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s03 + K3; e = e << 30 | e >> 2
t = s01 ^ s12 ^ s06 ^ s04; s04 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s04 + K3; d = d << 30 | d >> 2
t = s02 ^ s13 ^ s07 ^ s05; s05 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s05 + K3; c = c << 30 | c >> 2
t = s03 ^ s14 ^ s08 ^ s06; s06 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s06 + K3; b = b << 30 | b >> 2
t = s04 ^ s15 ^ s09 ^ s07; s07 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s07 + K3; a = a << 30 | a >> 2
t = s05 ^ s00 ^ s10 ^ s08; s08 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s08 + K3; e = e << 30 | e >> 2
t = s06 ^ s01 ^ s11 ^ s09; s09 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s09 + K3; d = d << 30 | d >> 2
t = s07 ^ s02 ^ s12 ^ s10; s10 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s10 + K3; c = c << 30 | c >> 2
t = s08 ^ s03 ^ s13 ^ s11; s11 = t << 1 | t >> 31; e += (a << 5 | a >> 27) + (b ^ c ^ d) + s11 + K3; b = b << 30 | b >> 2
t = s09 ^ s04 ^ s14 ^ s12; s12 = t << 1 | t >> 31; d += (e << 5 | e >> 27) + (a ^ b ^ c) + s12 + K3; a = a << 30 | a >> 2
t = s10 ^ s05 ^ s15 ^ s13; s13 = t << 1 | t >> 31; c += (d << 5 | d >> 27) + (e ^ a ^ b) + s13 + K3; e = e << 30 | e >> 2
t = s11 ^ s06 ^ s00 ^ s14; s14 = t << 1 | t >> 31; b += (c << 5 | c >> 27) + (d ^ e ^ a) + s14 + K3; d = d << 30 | d >> 2
t = s12 ^ s07 ^ s01 ^ s15; s15 = t << 1 | t >> 31; a += (b << 5 | b >> 27) + (c ^ d ^ e) + s15 + K3; c = c << 30 | c >> 2
st.a += a
st.b += b
st.c += c
st.d += d
st.e += e
}
const unpack = {b
var v : uint32
v = 0
v |= (b[0] : uint32) << 24
v |= (b[1] : uint32) << 16
v |= (b[2] : uint32) << 8
v |= (b[3] : uint32) << 0
-> v
}