| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| |
| // |
| // hash384.swift - Implementation of SHA-384 |
| // |
| // Created by Michael Scott on 29/03/2016. |
| // Copyright © 2016 Michael Scott. All rights reserved. |
| // |
| |
| import Foundation |
| |
| public struct HASH384{ |
| |
| private var length=[UInt64](repeating: 0,count: 2) |
| private var h=[UInt64](repeating: 0,count: 8) |
| private var w=[UInt64](repeating: 0,count: 80) |
| static let H0:UInt64=0xcbbb9d5dc1059ed8 |
| static let H1:UInt64=0x629a292a367cd507 |
| static let H2:UInt64=0x9159015a3070dd17 |
| static let H3:UInt64=0x152fecd8f70e5939 |
| static let H4:UInt64=0x67332667ffc00b31 |
| static let H5:UInt64=0x8eb44a8768581511 |
| static let H6:UInt64=0xdb0c2e0d64f98fa7 |
| static let H7:UInt64=0x47b5481dbefa4fa4 |
| |
| static let len:Int=48 |
| |
| static let K:[UInt64]=[ |
| 0x428a2f98d728ae22,0x7137449123ef65cd,0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc, |
| 0x3956c25bf348b538,0x59f111f1b605d019,0x923f82a4af194f9b,0xab1c5ed5da6d8118, |
| 0xd807aa98a3030242,0x12835b0145706fbe,0x243185be4ee4b28c,0x550c7dc3d5ffb4e2, |
| 0x72be5d74f27b896f,0x80deb1fe3b1696b1,0x9bdc06a725c71235,0xc19bf174cf692694, |
| 0xe49b69c19ef14ad2,0xefbe4786384f25e3,0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65, |
| 0x2de92c6f592b0275,0x4a7484aa6ea6e483,0x5cb0a9dcbd41fbd4,0x76f988da831153b5, |
| 0x983e5152ee66dfab,0xa831c66d2db43210,0xb00327c898fb213f,0xbf597fc7beef0ee4, |
| 0xc6e00bf33da88fc2,0xd5a79147930aa725,0x06ca6351e003826f,0x142929670a0e6e70, |
| 0x27b70a8546d22ffc,0x2e1b21385c26c926,0x4d2c6dfc5ac42aed,0x53380d139d95b3df, |
| 0x650a73548baf63de,0x766a0abb3c77b2a8,0x81c2c92e47edaee6,0x92722c851482353b, |
| 0xa2bfe8a14cf10364,0xa81a664bbc423001,0xc24b8b70d0f89791,0xc76c51a30654be30, |
| 0xd192e819d6ef5218,0xd69906245565a910,0xf40e35855771202a,0x106aa07032bbd1b8, |
| 0x19a4c116b8d2d0c8,0x1e376c085141ab53,0x2748774cdf8eeb99,0x34b0bcb5e19b48a8, |
| 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb,0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3, |
| 0x748f82ee5defb2fc,0x78a5636f43172f60,0x84c87814a1f0ab72,0x8cc702081a6439ec, |
| 0x90befffa23631e28,0xa4506cebde82bde9,0xbef9a3f7b2c67915,0xc67178f2e372532b, |
| 0xca273eceea26619c,0xd186b8c721c0c207,0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178, |
| 0x06f067aa72176fba,0x0a637dc5a2c898a6,0x113f9804bef90dae,0x1b710b35131c471b, |
| 0x28db77f523047d84,0x32caab7b40c72493,0x3c9ebe0a15c9bebc,0x431d67c49c100d4c, |
| 0x4cc5d4becb3e42b6,0x597f299cfc657e2a,0x5fcb6fab3ad6faec,0x6c44198c4a475817] |
| |
| private static func S(_ n: UInt32,_ x: UInt64) -> UInt64 |
| { |
| return ((x>>UInt64(n))|(x<<(64-UInt64(n)))) |
| } |
| |
| private static func R(_ n: UInt32,_ x: UInt64) -> UInt64 |
| { |
| return (x>>UInt64(n)) |
| } |
| |
| private static func Ch(_ x: UInt64,_ y: UInt64,_ z:UInt64) -> UInt64 |
| { |
| return ((x&y)^(~(x)&z)) |
| } |
| |
| private static func Maj(_ x: UInt64,_ y: UInt64,_ z:UInt64) -> UInt64 |
| { |
| return ((x&y)^(x&z)^(y&z)) |
| } |
| |
| private static func Sig0(_ x: UInt64) -> UInt64 |
| { |
| return (S(28,x)^S(34,x)^S(39,x)) |
| } |
| |
| private static func Sig1(_ x: UInt64) -> UInt64 |
| { |
| return (S(14,x)^S(18,x)^S(41,x)) |
| } |
| |
| private static func theta0(_ x: UInt64) -> UInt64 |
| { |
| return (S(1,x)^S(8,x)^R(7,x)) |
| } |
| |
| private static func theta1(_ x: UInt64) -> UInt64 |
| { |
| return (S(19,x)^S(61,x)^R(6,x)) |
| } |
| |
| private mutating func transform() |
| { /* basic transformation step */ |
| var a,b,c,d,e,f,g,hh,t1,t2 :UInt64 |
| for j in 16 ..< 80 |
| { |
| w[j]=HASH384.theta1(w[j-2])&+w[j-7]&+HASH384.theta0(w[j-15])&+w[j-16] |
| } |
| a=h[0]; b=h[1]; c=h[2]; d=h[3] |
| e=h[4]; f=h[5]; g=h[6]; hh=h[7] |
| |
| for j in 0 ..< 80 |
| { /* 64 times - mush it up */ |
| t1=hh&+HASH384.Sig1(e)&+HASH384.Ch(e,f,g)&+HASH384.K[j]&+w[j] |
| t2=HASH384.Sig0(a)&+HASH384.Maj(a,b,c) |
| hh=g; g=f; f=e; |
| e=d&+t1; |
| d=c; |
| c=b; |
| b=a; |
| a=t1&+t2; |
| } |
| h[0]=h[0]&+a; h[1]=h[1]&+b; h[2]=h[2]&+c; h[3]=h[3]&+d |
| h[4]=h[4]&+e; h[5]=h[5]&+f; h[6]=h[6]&+g; h[7]=h[7]&+hh; |
| } |
| |
| /* Re-Initialise Hash function */ |
| mutating func init_it() |
| { /* initialise */ |
| for i in 0 ..< 80 {w[i]=0} |
| length[0]=0; length[1]=0 |
| h[0]=HASH384.H0; |
| h[1]=HASH384.H1; |
| h[2]=HASH384.H2; |
| h[3]=HASH384.H3; |
| h[4]=HASH384.H4; |
| h[5]=HASH384.H5; |
| h[6]=HASH384.H6; |
| h[7]=HASH384.H7; |
| } |
| |
| public init() |
| { |
| init_it() |
| } |
| |
| /* process a single byte */ |
| public mutating func process(_ byt: UInt8) |
| { /* process the next message byte */ |
| let cnt=Int((length[0]/64)%16) |
| w[cnt]<<=8; |
| w[cnt]|=(UInt64(byt)&0xFF); |
| length[0]+=8; |
| if (length[0]==0) { length[1] += 1; length[0]=0 } |
| if ((length[0]%1024)==0) {transform()} |
| } |
| |
| /* process an array of bytes */ |
| public mutating func process_array(_ b: [UInt8]) |
| { |
| for i in 0 ..< b.count {process((b[i]))} |
| } |
| |
| /* process a 32-bit integer */ |
| public mutating func process_num(_ n:Int32) |
| { |
| process(UInt8((n>>24)&0xff)) |
| process(UInt8((n>>16)&0xff)) |
| process(UInt8((n>>8)&0xff)) |
| process(UInt8(n&0xff)) |
| } |
| |
| /* Generate 48-byte Hash */ |
| public mutating func hash() -> [UInt8] |
| { /* pad message and finish - supply digest */ |
| var digest=[UInt8](repeating: 0,count: 48) |
| |
| let len0=length[0] |
| let len1=length[1] |
| process(0x80); |
| while ((length[0]%1024) != 896) {process(0)} |
| w[14]=len1 |
| w[15]=len0; |
| transform() |
| for i in 0 ..< HASH384.len |
| { /* convert to bytes */ |
| digest[i]=UInt8((h[i/8]>>(8*(7-UInt64(i)%8))) & 0xff); |
| } |
| init_it(); |
| return digest; |
| } |
| |
| } |