1 /* 2 * WPA Supplicant - ASCII passphrase to WPA PSK tool 3 * Copyright (c) 2003-2005, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "crypto/sha1.h" 13 14 15 int main(int argc, char *argv[]) 16 { 17 unsigned char psk[32]; 18 int i; 19 char *ssid, *passphrase, buf[64], *pos; 20 size_t len; 21 22 if (argc < 2) { 23 printf("usage: wpa_passphrase <ssid> [passphrase]\n" 24 "\nIf passphrase is left out, it will be read from " 25 "stdin\n"); 26 return 1; 27 } 28 29 ssid = argv[1]; 30 31 if (argc > 2) { 32 passphrase = argv[2]; 33 } else { 34 printf("# reading passphrase from stdin\n"); 35 if (fgets(buf, sizeof(buf), stdin) == NULL) { 36 printf("Failed to read passphrase\n"); 37 return 1; 38 } 39 buf[sizeof(buf) - 1] = '\0'; 40 pos = buf; 41 while (*pos != '\0') { 42 if (*pos == '\r' || *pos == '\n') { 43 *pos = '\0'; 44 break; 45 } 46 pos++; 47 } 48 passphrase = buf; 49 } 50 51 len = os_strlen(passphrase); 52 if (len < 8 || len > 63) { 53 printf("Passphrase must be 8..63 characters\n"); 54 return 1; 55 } 56 if (has_ctrl_char((u8 *) passphrase, len)) { 57 printf("Invalid passphrase character\n"); 58 return 1; 59 } 60 61 pbkdf2_sha1(passphrase, (u8 *) ssid, os_strlen(ssid), 4096, psk, 32); 62 63 printf("network={\n"); 64 printf("\tssid=\"%s\"\n", ssid); 65 printf("\t#psk=\"%s\"\n", passphrase); 66 printf("\tpsk="); 67 for (i = 0; i < 32; i++) 68 printf("%02x", psk[i]); 69 printf("\n"); 70 printf("}\n"); 71 72 return 0; 73 } 74
