當機會(huì )降臨時(shí)作文

-- #include "stdint.h"

/pic/p>

　　int encode(const void* raw_in, void* raw_out, uint32_t password, size_t len)

　　{

　　const uint8_t* in = (const uint8_t*)raw_in;

　　uint8_t* out = (uint8_t*)raw_out;

　　uint32_t seed = password ^ 0x42381238u;

　　for (size_t i = 0 ; i < len; ++i) {

　　uint8_t a = ( in[i] ^ seed ) >> 2;

　　uint8_t b = ( ( ((uint32_t)in[i]) << 10 ) ^ seed ) >> (10-6);

　　a &= 63;

　　b &= 192;

　　a = 63 & ( a ^ (b << 3));

　　out[i] = a | b;

　　seed = (((seed << 7) ^ seed ^ in[i]) + 48475829);

　　}

　　return 0;

　　}

　　int decode(const void* raw_in, void* raw_out, uint32_t password, size_t len)

　　{

　　const uint8_t* in = (const uint8_t*)raw_in;

　　uint8_t* out = (uint8_t*)raw_out;

　　uint32_t seed = password ^ 0x42381238u;

　　for (size_t i = 0 ; i < len; ++i) {

　　/pic/p>

　　}

　　}

　　int main()

　　{

　　const uint8_t buf1[] = {0xf5, 0x3b, 0x3a, 0x0d, 0x54, 0x73, 0x34, 0xfe, 0x5d, 0x72, 0x2d, 0x8b, 0xca, 0x1d, 0xdb, 0xd4, 0x94, 0xfa, 0x88, 0xae, 0x51, 0x4f, 0x85, 0x38, 0x96, 0x33, 0xf1, 0xa3, 0x41, 0xf9, 0xc8, 0x67, 0xfc, 0x01, 0xc7, 0xdd, 0x22, 0xe7, 0xbd, 0x83, };

　　uint8_t buf2[100] = {};

　　const uint32_t password = 0x266d183bu;

　　const size_t len = sizeof(buf1);

　　encode(buf1, buf2, password, len);

　　printf("%s\n", buf2);

　　}

　　求哈希解碼算法
 

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