104 lines
2.1 KiB
C
104 lines
2.1 KiB
C
#ifndef __BASE58_H__
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#define __BASE58_H__
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#include <stdio.h>
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#include <string.h>
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#define BASE58_DECODE_BASE 0
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#define BASE58_ENCODE_BASE 0
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#define BASE58_DECODE_OUT_OF_RANGE 1
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void print_array(unsigned char* arr, int len){
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int i = 0;
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for (i=0; i<len; ++i){
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printf("%02X ",arr[i]);
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}
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printf("\n");
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}
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static unsigned char alphabet[] = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
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int base58Encode(const char* input,const unsigned int inLen,unsigned char *output,unsigned int outLen)
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{
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int i,j,tmp;
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memset(output,0,outLen);
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for(i=0;i<inLen;i++)
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{
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unsigned int c = input[i] & (0xff) ;
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for(j=outLen-1;j>=0;j--)
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{
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tmp = output[j] * 256 + c;
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c = tmp/58;
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output[j] = tmp%58;
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}
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}
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for(j=0; j<outLen; ++j)
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{
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output[j] = alphabet[output[j]];
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}
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return BASE58_ENCODE_BASE;
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}
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int base58Decode(const char* addr,const unsigned int addrLen,unsigned char *buf,unsigned int bufLen)
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{
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int i,j;
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unsigned int tmp;
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memset(buf,0,bufLen);
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for(i=0;i<addrLen;i++)
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{
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unsigned int c = addr[i];
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if (addr[i] < 58){ // Numbers
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c -= 49;
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}else if (addr[i] < 73){ // A-H
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c -= 56;
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}else if (addr[i] < 79){ // J-N
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c -= 57;
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}else if (addr[i] < 91){ // P-Z
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c -= 58;
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}else if (addr[i] < 108){ // a-k
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c -= 64;
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}else{ // m-z
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c -= 65;
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}
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for(j=bufLen-1;j>=0;j--)
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{
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tmp = buf[j] * 58 + c;
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c = (tmp & (~0xff)) >> 8;
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buf[j] = tmp & (0xff);
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}
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}
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return BASE58_DECODE_BASE;
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}
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#endif
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/*int main()
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{
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//char addr[]="1NQEQ7fkCQQiVKDohBGuE3zSYs7xfDobbg";
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char addr[]="Qmaa4Rw81a3a1VEx4LxB7HADUAXvZFhCoRdBzsMZyZmqHD";
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//char addr[]="5R1";
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//char addr[]="113YAvwi1V9WV9GEykK6XQ1UypmFPhVyh1";
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const int addrLen = sizeof(addr)-1;
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//char addr[]="115R";
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//const int addrLen = 4;
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const int bufLen = 40;
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char buf[bufLen];
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char addr2[addrLen];
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memset(buf,0,bufLen);
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printf("%s in Array[i] \BYTES AS HEX:", addr);
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print_array(addr,addrLen);
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printf("DECODED:");
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base58Decode(addr, addrLen, buf, bufLen);
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print_array(buf,bufLen);
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printf("ENCODED:");
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base58Encode(buf, bufLen, addr2, addrLen);
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print_array(addr2,addrLen);
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return 0;
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}*/ |