32?md5?
MD5(111111, 32) = 96e79218965eb72c92a549dd5a330112
MD5(111111, 16) = 965eb72c92a549dd
,?md5
www.cmd5 .com
www.xmd5.com
Algoritmo MD5Message-Digest 5-90¿Laboratorio MIT de Ciencias de la Computación?RSA Data Security Inc?Ronald L. Rivest?MD2?MD3?MD4"? "?MD2?MD4?MD5?128?MD2MD4?MD5?MD2?8MD4?MD532?C?RFC de Internet 1321?Ronald L. Rivest?1992?8?IEFT
Rivest?1989MD216?16Rogier?Chauvaud ?MD2MD2--?
Rivest?1990?MD4MD4?448512?mod 512 = 44864?512?Damg?rd/MerkleDen Boer?Bosselaers?MD4?Dobbertin?MD4MD4
?MD4 ?MD5SHA-1?RIPE-MD?HAVAL
?1991?Rivest?MD5?MD4"?-?"?Cinturones-de-seguridadMD5?MD4?MD4?MD5?-?MD4?Den Boer?BosselaersMD5Pseudo -Colisiones
Van Oorschot?Wiener?Brute-Force Hash FunctionMD51994241991?2001?10?MD5MD6?MD5?MD5MD5?MD5?MD5
MD5MessageMessage-? Digest?UNIX.md5?
MD5 (tanajiya.tar.gz) = 0ca175b9c0f726a831d895e269332461
tanajiya.tar.gzMD5?MD5MD5?MD5??? > MD5?UNIXMD5?MD5MD5
""?MD5MD5?MD5?88 Bytes26 26 10=62?P(62,1) P(62,2)?.P(62,8)?TBMD5? ¿UNIX?UNIX
?MD5MD5?512?16?3232?32128?
?MD5512448Longitud de bits?N*512 448?N*64 56Bytes?N ?10064?=N*512 448 64=(N 1)*512512?
MD532?Variable de encadenamiento?A=0x01234567?B=0x89abcdef?C=0xfedcba98?D=0x76543210
?512?
A?a?B?b?C?c?D?d?
MD416?a?b?c?d?a?b?c ?da?b?c?d
F(X,Y,Z) =(Xamp;
Y)|((~X)amp;Z)
G(X, Y, Z) = (Xamp; Z)|(Yamp; (~Z))
H (X, Y, Z) =X^Y^Z
I(X, Y, Z)=Y^(X|(~Z))
?amp;| ~^
X?Y?Z
FXYZH
?Mj?j?0?15?lt;lt? > FF(a,b,c,d,Mj,s,ti)?a=b ((a (F(b,c,d) Mj ti)lt;lt; GG(a,b,c,d, Mj, s, ti)?a=b ((a (G(b,c,d) Mj ti)lt;lt; HH(a,b,c,d,Mj,s,ti)?a=b ( (a (H(b,c,d) Mj ti)lt;lt; II(a,b,c,d,Mj,s,ti)?a=b ((a (I(b,c,d) Mj ti)lt;lt;
64
FF(a, b, c, d, M0, 7, 0xd76aa478)
FF(d, a, b, c, M1, 12, 0xe8c7b756)
FF(c, d, a, b, M2, 17, 0x242070db)
FF( b, c, d, a, M3, 22, 0xc1bdceee)
FF (a, b, c, d, M4, 7, 0xf57c0faf)
FF (d, a, b, c, M5, 12, 0x4787c62a)
FF (c, d, a, b, M6, 17, 0xa8304613)
FF (b, c, d, a, M7, 22, 0xfd469501)
FF(a, b, c, d, M8, 7, 0x698098d8)
FF(d, a, b, c, M9, 12, 0x8b44f7af)
FF(c,d,a,b,M10,17,0xffff5bb1)
FF(b,c,d,a,M11,22,0x895cd7be)
FF(a, b, c, d, M12, 7, 0x6b901122)
FF (d, a, b, c, M13, 12, 0xfd987193)
FF(c, d, a, b, M14, 17, 0xa679438e)
FF (b, c, d, a, M15, 22, 0x49b40821)
GG(a, b, c, d, M1, 5, 0xf61e2562)
GG(d, a, b, c, M6, 9, 0xc040b340)
GG(c,d,a,b,M11,14,0x265e5a51)
GG(b,c,d,a,M0,20,0xe9b6c7aa)
GG(a, b, c, d, M5, 5, 0xd62f105d)
GG (d, a, b, c, M10, 9, 0x02441453)
GG (c, d, a, b, M15, 14, 0xd8a1e681)
GG(b, c, d, a, M4, 20, 0xe7d3fbc8)
GG(a, b, c, d, M9
, 5, 0x21e1cde6)
GG(d, a, b, c, M14, 9, 0xc33707d6)
GG (c, d, a, b, M3, 14, 0xf4d50d87 )
GG(b,c,d,a,M8,20,0x455a14ed)
GG(a,b,c,d,M13,5,0xa9e3e905)
GG(d, a, b, c, M2, 9, 0xfcefa3f8)
GG(c, d, a, b, M7, 14, 0x676f02d9)
GG(b,c,d,a,M12,20,0x8d2a4c8a)
HH(a,b,c,d,M5,4,0xfffa3942)
HH(d, a, b, c, M8, 11, 0x8771f681)
HH(c, d, a, b, M11, 16, 0x6d9d6122)
HH (b,c,d,a,M14,23,0xfde5380c)
HH(a,b,c,d,M1,4,0xa4beea44)
HH(d,a , b, c, M4, 11, 0x4bdecfa9)
HH (c, d, a, b, M7, 16, 0xf6bb4b60)
HH (b, c, d, a , M10, 23, 0xbebfbc70)
HH(a, b, c, d, M13, 4, 0x289b7ec6)
HH(d, a, b, c, M0, 11 , 0xeaa127fa)
HH(c, d, a, b, M3, 16, 0xd4ef3085)
HH(b, c, d, a, M6, 23, 0x04881d05)
HH(a, b, c, d, M9, 4, 0xd9d4d039)
HH(d, a, b, c, M12, 11, 0xe6db99e5)
HH(c,d,a,b,M15,16,0x1fa27cf8)
HH(b,c,d,a,M2,23,0xc4ac5665)
p>
II(a, b, c, d, M0, 6, 0xf4292244)
II(d, a, b, c, M7, 10, 0x432aff97)
II(c, d, a, b, M14, 15, 0xab9423a7)
II(b, c, d, a, M5, 21, 0xfc93a039)
II (a, b, c, d, M12, 6, 0x655b59c3)
II(d, a, b, c, M3, 10, 0x8f0ccc92)
II(c, d , a , b, M10, 15, 0xffeff47d)
II(b, c, d, a, M1, 21, 0x85845dd1)
II(a, b, c, d , M8 , 6, 0x6fa87e4f)
II(d, a, b, c, M15, 10, 0xfe2ce6e0)
II(c, d, a, b, M6, 15 , 0xa3014314 )
II(b,c,d,a,M13,21,0x4e0811
a1)
II(a, b, c, d, M4, 6, 0xf7537e82)
II(d, a, b, c, M11, 10, 0xbd3af235)p>
II(c,d,a,b,M2,15,0x2ad7d2bb)
II(b,c,d,a,M9,21,0xeb86d391)
?ti
?iti?4294967296*abs(sin(i))?i(4294967296?2?32?) A?B?C?Da?b?c?dA?B? C? ("abc") = 900150983cd24fb0d6963f7d28e17f72
MD5 ("resumen del mensaje") = f96b697d7cb7938d525a2f31aaf161d0
MD5 ("abcdefghijklmnopqrstuvwxyz") = c3fc 7dfb496cca67e13b
MD5 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 ") =
d174ab98d277d9f5a5611c2c9f419d9f
MD5 ("123456789012345678901234567890123456789012345678901234567890123456789
01234567890") = 57edf4a22be3c955ac49da2e2107b67a
MD5
MD5
MD5?MD4?
1.
2.
3. ?G?(Xamp;Y)|(Xamp ;Z) |(Yamp;Z)?(Xamp;Z)|(Yamp;(~Z))?
4.
5.
6 !