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https://github.com/cwinfo/yggdrasil-go.git
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63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
#include "yggdrasil-brute.h"
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int find_where(unsigned char hash[64], unsigned char besthashlist[NUMKEYS][64]) {
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/* Where to insert hash into sorted hashlist */
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int j;
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int where = -1;
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for (j = 0; j < NUMKEYS; ++j) {
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if (memcmp(hash, besthashlist[j], 64) > 0) ++where;
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else break;
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}
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return where;
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}
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void insert_64(unsigned char itemlist[NUMKEYS][64], unsigned char item[64], int where) {
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int j;
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for (j = 0; j < where; ++j) {
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memcpy(itemlist[j], itemlist[j+1], 64);
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}
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memcpy(itemlist[where], item, 64);
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}
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void insert_32(unsigned char itemlist[NUMKEYS][32], unsigned char item[32], int where) {
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int j;
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for (j = 0; j < where; ++j) {
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memcpy(itemlist[j], itemlist[j+1], 32);
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}
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memcpy(itemlist[where], item, 32);
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}
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void make_addr(unsigned char addr[32], unsigned char hash[64]) {
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/* Public key hash to yggdrasil ipv6 address */
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int i;
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int offset;
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unsigned char mask;
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unsigned char c;
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int ones = 0;
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unsigned char br = 0; /* false */
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for (i = 0; i < 64 && !br; ++i) {
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mask = 128;
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c = hash[i];
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while (mask) {
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if (c & mask) {
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++ones;
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} else {
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br = 1; /* true */
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break;
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}
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mask >>= 1;
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}
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}
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addr[0] = 2;
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addr[1] = ones;
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offset = ones + 1;
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for (i = 0; i < 14; ++i) {
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c = hash[offset/8] << (offset%8);
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c |= hash[offset/8 + 1] >> (8 - offset%8);
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addr[i + 2] = c;
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offset += 8;
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}
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}
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