MD5算法C语言实现
md5.c
1 * Created on: 2013-4-24 2 * Author: veandy 3 4 5 #include "md5.h" 6 #include 7 #include "md5.h" 8 #include 9 #include 10 #include 11 12 13 14 unsigned char PADDING[]={0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 15 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 16 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 17 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; 18 19 void MD5Init(MD5_CTX *context) 20 { 21 context->count[0] = 0; 22 context->count[1] = 0; 23 context->state[0] = 0x67452301; 24 context->state[1] = 0xEFCDAB89; 25 context->state[2] = 0x98BADCFE; 26 context->state[3] = 0x10325476; 27 } 28 void MD5Update(MD5_CTX *context,unsigned char *input,unsigned int inputlen) 29 { 30 unsigned int i = 0,index = 0,partlen = 0; 31 index = (context->count[0] >> 3) & 0x3F; 32 partlen = 64 - index; 33 context->count[0] += inputlen << 3; 34 if(context->count[0] < (inputlen << 3)) 35 context->count[1]++; 36 context->count[1] += inputlen >> 29; 37 38 if(inputlen >= partlen) 39 { 40 memcpy(&context->buffer[index],input,partlen); 41 MD5Transform(context->state,context->buffer); 42 for(i = partlen;i+64 <= inputlen;i+=64) 43 MD5Transform(context->state,&input[i]); 44 index = 0; 45 } 46 else 47 { 48 i = 0; 49 } 50 memcpy(&context->buffer[index],&input[i],inputlen-i); 51 } 52 void MD5Final(MD5_CTX *context,unsigned char digest[16]) 53 { 54 unsigned int index = 0,padlen = 0; 55 unsigned char bits[8]; 56 index = (context->count[0] >> 3) & 0x3F; 57 padlen = (index < 56)?(56-index):(120-index); 58 MD5Encode(bits,context->count,8); 59 MD5Update(context,PADDING,padlen); 60 MD5Update(context,bits,8); 61 MD5Encode(digest,context->state,16); 62 } 63 void MD5Encode(unsigned char *output,unsigned int *input,unsigned int len) 64 { 65 unsigned int i = 0,j = 0; 66 while(j < len) 67 { 68 output[j] = input[i] & 0xFF; 69 output[j+1] = (input[i] >> 8) & 0xFF; 70 output[j+2] = (input[i] >> 16) & 0xFF; 71 output[j+3] = (input[i] >> 24) & 0xFF; 72 i++; 73 j+=4; 74 } 75 } 76 void MD5Decode(unsigned int *output,unsigned char *input,unsigned int len) 77 { 78 unsigned int i = 0,j = 0; 79 while(j < len) 80 { 81 output[i] = (input[j]) | 82 (input[j+1] << 8) | 83 (input[j+2] << 16) | 84 (input[j+3] << 24); 85 i++; 86 j+=4; 87 } 88 } 89 void MD5Transform(unsigned int state[4],unsigned char block[64]) 90 { 91 unsigned int a = state[0]; 92 unsigned int b = state[1]; 93 unsigned int c = state[2]; 94 unsigned int d = state[3]; 95 unsigned int x[64]; 96 MD5Decode(x,block,64); 97 FF(a, b, c, d, x[ 0], 7, 0xd76aa478); 98 FF(d, a, b, c, x[ 1], 12, 0xe8c7b756); 99 FF(c, d, a, b, x[ 2], 17, 0x242070db); 100 FF(b, c, d, a, x[ 3], 22, 0xc1bdceee); 101 FF(a, b, c, d, x[ 4], 7, 0xf57c0faf); 102 FF(d, a, b, c, x[ 5], 12, 0x4787c62a); 103 FF(c, d, a, b, x[ 6], 17, 0xa8304613); 104 FF(b, c, d, a, x[ 7], 22, 0xfd469501); 105 FF(a, b, c, d, x[ 8], 7, 0x698098d8); 106 FF(d, a, b, c, x[ 9], 12, 0x8b44f7af); 107 FF(c, d, a, b, x[10], 17, 0xffff5bb1); 108 FF(b, c, d, a, x[11], 22, 0x895cd7be); 109 FF(a, b, c, d, x[12], 7, 0x6b901122); 110 FF(d, a, b, c, x[13], 12, 0xfd987193); 111 FF(c, d, a, b, x[14], 17, 0xa679438e); 112 FF(b, c, d, a, x[15], 22, 0x49b40821); 113 114 GG(a, b, c, d, x[ 1], 5, 0xf61e2562); 115 GG(d, a, b, c, x[ 6], 9, 0xc040b340); 116 GG(c, d, a, b, x[11], 14, 0x265e5a51); 117 GG(b, c, d, a, x[ 0], 20, 0xe9b6c7aa); 118 GG(a, b, c, d, x[ 5], 5, 0xd62f105d); 119 GG(d, a, b, c, x[10], 9, 0x2441453); 120 GG(c, d, a, b, x[15], 14, 0xd8a1e681); 121 GG(b, c, d, a, x[ 4], 20, 0xe7d3fbc8); 122 GG(a, b, c, d, x[ 9], 5, 0x21e1cde6); 123 GG(d, a, b, c, x[14], 9, 0xc33707d6); 124 GG(c, d, a, b, x[ 3], 14, 0xf4d50d87); 125 GG(b, c, d, a, x[ 8], 20, 0x455a14ed); 126 GG(a, b, c, d, x[13], 5, 0xa9e3e905); 127 GG(d, a, b, c, x[ 2], 9, 0xfcefa3f8); 128 GG(c, d, a, b, x[ 7], 14, 0x676f02d9); 129 GG(b, c, d, a, x[12], 20, 0x8d2a4c8a); 130 131 HH(a, b, c, d, x[ 5], 4, 0xfffa3942); 132 HH(d, a, b, c, x[ 8], 11, 0x8771f681); 133 HH(c, d, a, b, x[11], 16, 0x6d9d6122); 134 HH(b, c, d, a, x[14], 23, 0xfde5380c); 135 HH(a, b, c, d, x[ 1], 4, 0xa4beea44); 136 HH(d, a, b, c, x[ 4], 11, 0x4bdecfa9); 137 HH(c, d, a, b, x[ 7], 16, 0xf6bb4b60); 138 HH(b, c, d, a, x[10], 23, 0xbebfbc70); 139 HH(a, b, c, d, x[13], 4, 0x289b7ec6); 140 HH(d, a, b, c, x[ 0], 11, 0xeaa127fa); 141 HH(c, d, a, b, x[ 3], 16, 0xd4ef3085); 142 HH(b, c, d, a, x[ 6], 23, 0x4881d05); 143 HH(a, b, c, d, x[ 9], 4, 0xd9d4d039); 144 HH(d, a, b, c, x[12], 11, 0xe6db99e5); 145 HH(c, d, a, b, x[15], 16, 0x1fa27cf8); 146 HH(b, c, d, a, x[ 2], 23, 0xc4ac5665); 147 148 II(a, b, c, d, x[ 0], 6, 0xf4292244); 149 II(d, a, b, c, x[ 7], 10, 0x432aff97); 150 II(c, d, a, b, x[14], 15, 0xab9423a7); 151 II(b, c, d, a, x[ 5], 21, 0xfc93a039); 152 II(a, b, c, d, x[12], 6, 0x655b59c3); 153 II(d, a, b, c, x[ 3], 10, 0x8f0ccc92); 154 II(c, d, a, b, x[10], 15, 0xffeff47d); 155 II(b, c, d, a, x[ 1], 21, 0x85845dd1); 156 II(a, b, c, d, x[ 8], 6, 0x6fa87e4f); 157 II(d, a, b, c, x[15], 10, 0xfe2ce6e0); 158 II(c, d, a, b, x[ 6], 15, 0xa3014314); 159 II(b, c, d, a, x[13], 21, 0x4e0811a1); 160 II(a, b, c, d, x[ 4], 6, 0xf7537e82); 161 II(d, a, b, c, x[11], 10, 0xbd3af235); 162 II(c, d, a, b, x[ 2], 15, 0x2ad7d2bb); 163 II(b, c, d, a, x[ 9], 21, 0xeb86d391); 164 state[0] += a; 165 state[1] += b; 166 state[2] += c; 167 state[3] += d; 168 }
md5.h
* Created on: 2013-4-24 * Author: Administrator #ifndef MD5_H_ #define MD5_H_ typedef struct { unsigned int count[2]; unsigned int state[4]; unsigned char buffer[64]; }MD5_CTX; #define F(x,y,z) ((x & y) | (~x & z)) #define G(x,y,z) ((x & z) | (y & ~z)) #define H(x,y,z) (x^y^z) #define I(x,y,z) (y ^ (x | ~z)) #define ROTATE_LEFT(x,n) ((x << n) | (x >> (32-n))) #define FF(a,b,c,d,x,s,ac) \ { \ a += F(b,c,d) + x + ac; \ a = ROTATE_LEFT(a,s); \ a += b; \ } #define GG(a,b,c,d,x,s,ac) \ { \ a += G(b,c,d) + x + ac; \ a = ROTATE_LEFT(a,s); \ a += b; \ } #define HH(a,b,c,d,x,s,ac) \ { \ a += H(b,c,d) + x + ac; \ a = ROTATE_LEFT(a,s); \ a += b; \ } #define II(a,b,c,d,x,s,ac) \ { \ a += I(b,c,d) + x + ac; \ a = ROTATE_LEFT(a,s); \ a += b; \ } void MD5Init(MD5_CTX *context); void MD5Update(MD5_CTX *context,unsigned char *input,unsigned int inputlen); void MD5Final(MD5_CTX *context,unsigned char digest[16]); void MD5Transform(unsigned int state[4],unsigned char block[64]); void MD5Encode(unsigned char *output,unsigned int *input,unsigned int len); void MD5Decode(unsigned int *output,unsigned char *input,unsigned int len); #endif test.cpp #include #include #include #include #include #include "md5.h" #include extern "C" { jbyteArray Java_com_example_demo_MainActivity_getaddressFromJNI(JNIEnv* env, jobject thiz) { MD5_CTX md5; MD5Init(&md5); int i; unsigned char encrypt[] = "218545415555555555555555555"; unsigned char decrypt[16]; MD5Update(&md5, encrypt, strlen((char *) encrypt)); MD5Final(&md5, decrypt); std:: string str=""; char* c; for (int i = 0; i < 16; ++i) { __android_log_print(ANDROID_LOG_INFO, "MYPROG", "decrypt = %x", decrypt[i]); str+=decrypt[i]; //__android_log_print(ANDROID_LOG_INFO, "ed", "strd = %c", // str[0]); //const char* s=str.c_str(); __android_log_print(ANDROID_LOG_INFO, "ed", "strd = %x", str[i]); } jbyte *by = (jbyte*)decrypt; jbyteArray jarray = env->NewByteArray(16); (env)->SetByteArrayRegion(jarray, 0, 16, (jbyte*)decrypt); return jarray; }
