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第 8 章 密码技术. 项目一 密码学. 第 8 章 密 码 技 术. 一、 密码学基础 二、 对称加密技术 三、 网络加密技术. 项目二 常用的加密解密操作. 四、 文件加密技术 五、 加壳技术 六、 ERD Commander 入侵. 一、 密码学基础. ㈠密码学发展历史. 从古代到 19 世纪末. 从 20 世纪初到 20 世纪 50 年代. 从 20 世纪 50 年代至今. 古典密码时期. 近代密码时期. 现代密码时期. 一、 密码学基础. ㈠密码学发展历史. ⑴古典密码时期. 起始 时间.

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第 8 章 密码技术

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8

8


8

8

ERD Commander


8

19

202050

2050


8

19


8

202050


8

2050


8

4.

2.

5.

3.


8

8-1


8

(Symmetric System)

(Asymmetric System)


8

4

A

B

D

C


8

(1) ()

(2)


8

(3)

(4)

(5)


8

()


8

(data encryption standardDES)()


8


8

can you believe her


8

3 4 2 1 8 7 6 5 9 10 11 12 20 19 18 17


8


8

computer systems

smetsys retupmoc

can you believe her


8

yevrnbeecoleauih


8

()

DES


8

DES16DES5664ECB(CBC()CFB()6464


8

DES


8


8

()

PKSK

RSA

RSA

1

2


8


8


8


8

DESRSA

DES64DES64856DESDES RSARSARSA


8


8

()


8

KDCSKKDCPKKDC


8

()(CA)(IP)


8

()

()


8

(MACMessage Authentication Code)KABMMAC=F(KM)FABBM()K


8

DES(1632)MAC


8

(HASH)(MD)


8

MH(M)H(M)(MDMessage Digest)MDMDMD


8


8

128


8

1

2

3

4

5


8


8

DES

DES

(NBS)1977DESDES


8

DES

DES

(1)

(2)


8

DES

DES


8

DES

DES

02

01

()


8

DES

DES

DES

DES6456864881624324048566456

DES3KeyDataMode


8

DES

DES

DES

DES3


8

DES

DES

DES

8-2 DES


8

DES

DES

DES

8-3 IPIP-1


8

DES

DES

DES

8-4 DES


8

DES

DES

DES

8-5 f(Ri-1ki)


8

DES

DES

DES

8-1 E(R)


8

DES

8-1 E(R)


8

DES

DES

DES

8-2 P(H)


8

DES

DES

DES

8-3 S1


8

IDEA

IDEA64128IDEA3

1

216

2

3

216+10216


8

RC5

RC53


8

RC5

32bitLS

S0=P

Si=(Si-1+Q)mod 232

i=1 to 2(r+1)-1P=0xb7e15163Q=0x9e3779b9

LS

i=j=0

A=B=0


8

RC5

3n(c32bitLn2(r+1)c)

A=Si=(Si+A+B)<<<3

B=Lj=(Lj+A+B)<<<(A+B)

i=i+1 mod 2(r+1)

j=(j+1) mod c


8

RC5

(64bit)32AB()

A=A+S0

B=B+S1

for(i=1i<=ri++)

{A=((AB)<<<B)+S2i

B=((BA)<<<A)+S2i+1

}

AB


8

RC5

AB

for(i=rr>=1r--)

{

B=((B-S2i+1)>>>A) A

A=((A-S2i)>>>B) B

}

B=B-S1

A=A-S0

AB(>>>232)


8

8-6


8

8-7


8

8-8


8

WinRAR

(1)8-9

8-9


8

(2)8-10

8-10


8

(3)8-11

8-11


8

(4)8-12

8-12


8

(5)8-13

8-13


8

(1)

8-14


8

(2)

8-15


8

(3)Windows

8-16


8

(4)


8

8-17


8

8-18


8

8-19


8

8-20


8

8-21


8

8-22


8

8-23


8

8-24


8

8-25


8

8-26


8


8


8

1

API

2

3

5

4

HOOK-API


8

ASPack

ASPackEXEDLLOCXUPX

8-27 ASPack


8

ASPack

8-28


8

ASPack

8-29


8

Armadillo

(1)Armadillo8-30

8-30 Armadillo


8

(2)file | New Project8-31Project Settings

8-31 Project Settings


8

(3)Project ID and Version

(4)Files to Project

8-32()

8-32 Files to Project


8

(5)Splash Screen 1

(6)Protection Options8-33

8-33 Protection Options


8

(7)Compression Options8-34

8-34 Compression Options


8

(8)SoftICE Detection8-35

8-35 SoftICEDetection


8

(9)Std Hardware Locking(Pro)Enh Hardware Locking(Pro)8-36

8-36


8

(10)Enh Hardware Locking(Pro)8-37

8-37 Enh Hardware Locking(pro)


8

(11)Certificates8-38

8-38 Certificates


8

(12)New8-39

8-39 Certificate Settings


8

(13)Name |Template |Sig Level

(14)Hardware Locking(Pro)8-40

8-40 Hardware Locking(Pro)


8

(15)Armadillo8-41

8-41


8

(16)ArmadilloKeys | Create KeyGenerate Key

8-42 Generate Key


8

ERD Commander

Windows PE

Windows PE Windows XPWindows XPOEMWindows PE


8

ERD Commander

Windows PE

1)BIOS

2)Windows PE

8-43 Windows PE


8

ERD Commander

3)|8-44

8-44


8

ERD Commander

1

BIOS

Windows PE

2

3

4

5

Windows PE


8

ERD Commander

3)

|ERD 2003|(=)8-45

8-45


8

ERD Commander

8-46C:\WINDOWS

8-46


8

ERD Commander

8-47

8-47


8

ERD Commander

4)

|ERD 2003|(Locksmith)4-48

8-48


8

ERD Commander

RED Commander 2003 Locksmith8-49

8-49 RED Commander 2003 Locksmith


8

ERD Commander

8-50

8-50


8

ERD Commander

zzzz1238-51

8-51


8

ERD Commander

8-52

8-52


8

Thank You !


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