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https://github.com/keepassxreboot/keepassxc.git
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b2f3cc6903
* Add Standalone Password Generator. Closes #18 * Add an entropy meter for passwords. Closes #84 * Don't require password repeat when it is visible. Fixes #27
117 lines
4.3 KiB
C++
117 lines
4.3 KiB
C++
/*
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Part of this code come from zxcvbn-c example.
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Copyright (c) 2015, Tony Evans
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Copyright (c) 2016, KeePassXC Team
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See zxcvbn/zxcvbn.cpp for complete COPYRIGHT Notice
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "zxcvbn/zxcvbn.h"
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/* For pre-compiled headers under windows */
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#ifdef _WIN32
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#include "stdafx.h"
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#endif
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static void calculate(const char *pwd, int advanced)
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{
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double e;
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int len = strlen(pwd);
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if (advanced == 0){
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e = ZxcvbnMatch(pwd, 0, 0);
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printf("Pass '%s' \tLength %d\tEntropy %.3f\tLog10 %.3f\n", pwd, len, e, e * 0.301029996);
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} else {
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int ChkLen;
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ZxcMatch_t *info, *p;
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double m = 0.0;
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e = ZxcvbnMatch(pwd, 0, &info);
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for(p = info; p; p = p->Next) {
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m += p->Entrpy;
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}
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m = e - m;
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printf("Pass '%s' \tLength %d\tEntropy %.3f\tLog10 %.3f\n Multi-word extra bits %.1f\n", pwd, len, e, e * 0.301029996, m);
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p = info;
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ChkLen = 0;
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while(p) {
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int n;
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switch(static_cast<int>(p->Type))
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{
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case BRUTE_MATCH: printf(" Type: Bruteforce "); break;
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case DICTIONARY_MATCH: printf(" Type: Dictionary "); break;
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case DICT_LEET_MATCH: printf(" Type: Dict+Leet "); break;
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case USER_MATCH: printf(" Type: User Words "); break;
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case USER_LEET_MATCH: printf(" Type: User+Leet "); break;
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case REPEATS_MATCH: printf(" Type: Repeated "); break;
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case SEQUENCE_MATCH: printf(" Type: Sequence "); break;
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case SPATIAL_MATCH: printf(" Type: Spatial "); break;
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case DATE_MATCH: printf(" Type: Date "); break;
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case BRUTE_MATCH+MULTIPLE_MATCH: printf(" Type: Bruteforce(Rep)"); break;
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case DICTIONARY_MATCH+MULTIPLE_MATCH: printf(" Type: Dictionary(Rep)"); break;
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case DICT_LEET_MATCH+MULTIPLE_MATCH: printf(" Type: Dict+Leet(Rep) "); break;
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case USER_MATCH+MULTIPLE_MATCH: printf(" Type: User Words(Rep)"); break;
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case USER_LEET_MATCH+MULTIPLE_MATCH: printf(" Type: User+Leet(Rep) "); break;
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case REPEATS_MATCH+MULTIPLE_MATCH: printf(" Type: Repeated(Rep) "); break;
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case SEQUENCE_MATCH+MULTIPLE_MATCH: printf(" Type: Sequence(Rep) "); break;
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case SPATIAL_MATCH+MULTIPLE_MATCH: printf(" Type: Spatial(Rep) "); break;
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case DATE_MATCH+MULTIPLE_MATCH: printf(" Type: Date(Rep) "); break;
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default: printf(" Type: Unknown%d ", p->Type); break;
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}
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ChkLen += p->Length;
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printf(" Length %d Entropy %6.3f (%.2f) ", p->Length, p->Entrpy, p->Entrpy * 0.301029996);
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for(n = 0; n < p->Length; ++n, ++pwd) {
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printf("%c", *pwd);
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}
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printf("\n");
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p = p->Next;
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}
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ZxcvbnFreeInfo(info);
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if (ChkLen != len)
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printf("*** Password length (%d) != sum of length of parts (%d) ***\n", len, ChkLen);
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}
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}
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int main(int argc, char **argv)
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{
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printf("KeePassXC Entropy Meter, based on zxcvbn-c.\nEnter your password below or pass it as argv\n");
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printf(" Usage: entropy-meter [-a] [pwd1 pwd2 ...]\n> ");
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int i, advanced;
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if ((argc > 1) && (argv[1][0] == '-') && (!strcmp(argv[1], "-a")))
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{
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advanced = 1;
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}
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i = 2;
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if (i >= argc)
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{
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/* No test passwords on command line, so get them from stdin */
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char line[500];
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while(fgets(line, sizeof line, stdin))
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{
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/* Drop the trailing newline character */
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for(i = 0; i < static_cast<int>(sizeof line - 1); ++i)
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{
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if (line[i] < ' ')
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{
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line[i] = 0;
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break;
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}
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}
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if (line[0])
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calculate(line,advanced);
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printf("> ");
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}
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}
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else
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{
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/* Do the test passwords on the command line */
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for(; i < argc; ++i)
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{
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calculate(argv[i],advanced);
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}
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}
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return 0;
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}
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