Applet to serve as an s/key calculator application wrapper around otp class
/* applet to serve as an s/key calculator application wrapper
* around otp class.
*
* Copyright 1996, Harry Mantakos, harry@cs.umd.edu
*/
import java.awt.Button;
import java.awt.Color;
import java.awt.Event;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextField;
import java.util.StringTokenizer;
public class jotp extends java.applet.Applet {
TextField otptf, chaltf, pwtf;
final String md4label = "compute with MD4";
final String md5label = "compute with MD5";
final String version = "jotp 0.8";
/* Just takes challenge info and passphrase info on the
* command line (ick) and spits out the resulting otp "words".
*
* Mainly for testing.
*/
public static void main(String[] argv) {
String seed, passphrase;
int seq;
otp otpwd;
int hashalg;
String hashtype;
if ((argv.length < 3) || (argv.length > 4)) {
System.err.println("usage: jotp sequence seed passphrase" +
"[md4|md5]");
return;
}
seq = new Integer(argv[0]).intValue();
seed = new String(argv[1]);
passphrase = new String(argv[2]);
if ((argv.length == 3) || argv[3].equals("4") ||
argv[3].equals("md4") || argv[3].equals("MD4")) {
hashtype = "md4";
hashalg = otp.MD4;
} else if (argv[3].equals("5") || argv[3].equals("md5") ||
argv[3].equals("MD5")) {
hashtype = "md5";
hashalg = otp.MD5;
} else {
System.err.println("usage: jotp sequence seed passphrase " +
"[4|md4|5|md5]");
return;
}
otpwd = new otp(seq, seed, passphrase, hashalg);
System.out.println("Using " + hashtype + ". Thinking...");
otpwd.calc();
System.out.println(otpwd);
}
public void init() {
setBackground(Color.white);
setLayout(new GridLayout(6,1));
Panel panel1 = new Panel();
add (panel1);
Font titlefont = new Font("TimesRoman", Font.BOLD, 14);
panel1.setFont(titlefont);
panel1.add(new Label(String.valueOf(version) +
": The Java OTP (aka S/Key) calculator!"));
Panel panel2 = new Panel();
panel2.setLayout(new FlowLayout());
add (panel2);
panel2.add(new Label("Challenge (e.g. \"55 latour1\"):"));
chaltf = new TextField(24);
panel2.add(chaltf);
Panel panel3 = new Panel();
panel3.setLayout(new FlowLayout());
add(panel3);
panel3.add(new Label("Secret Password:"));
pwtf = new TextField(24);
pwtf.setEchoCharacter('*');
panel3.add(pwtf);
Panel panel4 = new Panel();
panel4.setLayout(new FlowLayout());
add(panel4);
panel4.add (new Button(String.valueOf(md4label)));
panel4.add (new Button(String.valueOf(md5label)));
Panel panel6 = new Panel();
panel6.setLayout(new FlowLayout());
add(panel6);
panel6.add(new Label("One-Time Password:", Label.LEFT));
otptf = new TextField(40);
panel6.add(otptf);
Panel panel7 = new Panel();
add(panel7);
panel7.add(new Label("jotp by Harry Mantakos, " +
"http://www.cs.umd.edu/~harry/jotp"));
}
public boolean action(Event evt, Object arg) {
String tmpstr, tmpstr2, seed, passphrase;
int seq, hashalg;
otp otpwd;
if (evt.target instanceof Button) {
if (arg.equals(md5label)) {
hashalg = otp.MD5;
} else {
hashalg = otp.MD4;
}
/* Split up challenge */
tmpstr = chaltf.getText();
StringTokenizer st = new StringTokenizer(tmpstr);
if (st.countTokens() != 2) {
otptf.setText("bogus challenge");
return true;
}
tmpstr2 = st.nextToken();
try {
seq = (Integer.parseInt(tmpstr2));
} catch (NumberFormatException e) {
otptf.setText("bogus sequence number '" + tmpstr2 + "'");
return true;
}
seed = st.nextToken();
passphrase = pwtf.getText();
/* passphrase = "eat me";*/
System.out.println("passphrase = " + passphrase);
otptf.setText("Okay, thinking...");
otpwd = new otp(seq, seed, passphrase, hashalg);
otpwd.calc();
otptf.setText(otpwd.toString());
}
return true;
}
}
/* Class for implementing OTP (aka s/key) one-time password calculation
* using the accompanying md class for md4 (and hopefully md5 eventually)
* based key calculation.
*
* The constructor is used to set the challenge info and passphrase,
* and the calc() method calculates the otp. The results can either
* be retrieved using the tolong() method, which gives you the 64 bits
* "folded" hash in a single word, or else as a String of otp "words"
* via toString().
*
* Cripes this is slow. How can we make it faster?
*
* Copyright 1996 Harry Mantakos, harry@cs.umd.edu
*/
class otp {
int seq;
String seed, passphrase;
byte hash[];
int sha;
final static byte MD4 = 4;
final static byte MD5 = 5;
otp(int n, String s, String p, int hashalg) {
this.seq = n;
this.seed = s;
this.passphrase = p;
this.sha = hashalg;
}
void calc() {
if (this.sha == MD5) {
this.md5calc();
} else {
this.md4calc();
}
}
void md4calc() {
int tmpseq = this.seq;
md4 mdc;
mdc = new md4(this.seed + this.passphrase);
mdc.calc();
this.hash = otpfoldregs(mdc.getregs());
while (tmpseq > 0) {
mdc = new md4(hash);
mdc.calc();
this.hash = otpfoldregs(mdc.getregs());
tmpseq--;
}
}
void md5calc() {
int tmpseq = this.seq;
md5 mdc;
mdc = new md5(this.seed + this.passphrase);
mdc.calc();
this.hash = otpfoldregs(mdc.getregs());
while (tmpseq > 0) {
mdc = new md5(hash);
mdc.calc();
this.hash = otpfoldregs(mdc.getregs());
tmpseq--;
}
}
static byte[] otpfoldregs(int regs[]) {
int ac, bd, i;
byte fold[] = new byte[8];
ac = regs[0] ^ regs[2];
bd = regs[1] ^ regs[3];
for (i=0; i < 4; i++) {
fold[i] = (byte) (ac & 0xff);
ac >>= 8;
}
for (i=4; i < 8; i++) {
fold[i] = (byte) (bd & 0xff);
bd >>= 8;
}
return fold;
}
long tolong() {
long wi;
int i;
wi = 0;
for (i=0; i < 8; i++) {
wi <<= 8;
wi |= (this.hash[i] & 0xff);
}
return wi;
}
public String toString() {
long wi, tmplong;
String tmpstr;
int i, j;
byte parity;
wi = this.tolong();
tmplong = wi;
tmpstr = "";
parity = 0;
for (i = 0; i < 64; i+=2) {
parity += tmplong & 0x3;
tmplong >>= 2;
}
for (i=4; i >= 0; i--) {
tmpstr += btoe((int)
((wi >> (i * 11 + 9)) & 0x7ff)) + " ";
}
tmpstr += btoe((int) ((wi << 2) & 0x7fc) | (parity & 0x03));
return tmpstr;
}
public static String btoe(int index) {
if (index < words.length) {
return words[index];
} else {
return "bogus";
}
}
static String words[] =
{ "A", "ABE", "ACE", "ACT", "AD", "ADA", "ADD",
"AGO", "AID", "AIM", "AIR", "ALL", "ALP", "AM", "AMY",
"AN", "ANA", "AND", "ANN", "ANT", "ANY", "APE", "APS",
"APT", "ARC", "ARE", "ARK", "ARM", "ART", "AS", "ASH",
"ASK", "AT", "ATE", "AUG", "AUK", "AVE", "AWE", "AWK",
"AWL", "AWN", "AX", "AYE", "BAD", "BAG", "BAH", "BAM",
"BAN", "BAR", "BAT", "BAY", "BE", "BED", "BEE", "BEG",
"BEN", "BET", "BEY", "BIB", "BID", "BIG", "BIN", "BIT",
"BOB", "BOG", "BON", "BOO", "BOP", "BOW", "BOY", "BUB",
"BUD", "BUG", "BUM", "BUN", "BUS", "BUT", "BUY", "BY",
"BYE", "CAB", "CAL", "CAM", "CAN", "CAP", "CAR", "CAT",
"CAW", "COD", "COG", "COL", "CON", "COO", "COP", "COT",
"COW", "COY", "CRY", "CUB", "CUE", "CUP", "CUR", "CUT",
"DAB", "DAD", "DAM", "DAN", "DAR", "DAY", "DEE", "DEL",
"DEN", "DES", "DEW", "DID", "DIE", "DIG", "DIN", "DIP",
"DO", "DOE", "DOG", "DON", "DOT", "DOW", "DRY", "DUB",
"DUD", "DUE", "DUG", "DUN", "EAR", "EAT", "ED", "EEL",
"EGG", "EGO", "ELI", "ELK", "ELM", "ELY", "EM", "END",
"EST", "ETC", "EVA", "EVE", "EWE", "EYE", "FAD", "FAN",
"FAR", "FAT", "FAY", "FED", "FEE", "FEW", "FIB", "FIG",
"FIN", "FIR", "FIT", "FLO", "FLY", "FOE", "FOG", "FOR",
"FRY", "FUM", "FUN", "FUR", "GAB", "GAD", "GAG", "GAL",
"GAM", "GAP", "GAS", "GAY", "GEE", "GEL", "GEM", "GET",
"GIG", "GIL", "GIN", "GO", "GOT", "GUM", "GUN", "GUS",
"GUT", "GUY", "GYM", "GYP", "HA", "HAD", "HAL", "HAM",
"HAN", "HAP", "HAS", "HAT", "HAW", "HAY", "HE", "HEM",
"HEN", "HER", "HEW", "HEY", "HI", "HID", "HIM", "HIP",
"HIS", "HIT", "HO", "HOB", "HOC", "HOE", "HOG", "HOP",
"HOT", "HOW", "HUB", "HUE", "HUG", "HUH", "HUM", "HUT",
"I", "ICY", "IDA", "IF", "IKE", "ILL", "INK", "INN",
"IO", "ION", "IQ", "IRA", "IRE", "IRK", "IS", "IT",
"ITS", "IVY", "JAB", "JAG", "JAM", "JAN", "JAR", "JAW",
"JAY", "JET", "JIG", "JIM", "JO", "JOB", "JOE", "JOG",
"JOT", "JOY", "JUG", "JUT", "KAY", "KEG", "KEN", "KEY",
"KID", "KIM", "KIN", "KIT", "LA", "LAB", "LAC", "LAD",
"LAG", "LAM", "LAP", "LAW", "LAY", "LEA", "LED", "LEE",
"LEG", "LEN", "LEO", "LET", "LEW", "LID", "LIE", "LIN",
"LIP", "LIT", "LO", "LOB", "LOG", "LOP", "LOS", "LOT",
"LOU", "LOW", "LOY", "LUG", "LYE", "MA", "MAC", "MAD",
"MAE", "MAN", "MAO", "MAP", "MAT", "MAW", "MAY", "ME",
"MEG", "MEL", "MEN", "MET", "MEW", "MID", "MIN", "MIT",
"MOB", "MOD", "MOE", "MOO", "MOP", "MOS", "MOT", "MOW",
"MUD", "MUG", "MUM", "MY", "NAB", "NAG", "NAN", "NAP",
"NAT", "NAY", "NE", "NED", "NEE", "NET", "NEW", "NIB",
"NIL", "NIP", "NIT", "NO", "NOB", "NOD", "NON", "NOR",
"NOT", "NOV", "NOW", "NU", "NUN", "NUT", "O", "OAF",
"OAK", "OAR", "OAT", "ODD", "ODE", "OF", "OFF", "OFT",
"OH", "OIL", "OK", "OLD", "ON", "ONE", "OR", "ORB",
"ORE", "ORR", "OS", "OTT", "OUR", "OUT", "OVA", "OW",
"OWE", "OWL", "OWN", "OX", "PA", "PAD", "PAL", "PAM",
"PAN", "PAP", "PAR", "PAT", "PAW", "PAY", "PEA", "PEG",
"PEN", "PEP", "PER", "PET", "PEW", "PHI", "PI", "PIE",
"PIN", "PIT", "PLY", "PO", "POD", "POE", "POP", "POT",
"POW", "PRO", "PRY", "PUB", "PUG", "PUN", "PUP", "PUT",
"QUO", "RAG", "RAM", "RAN", "RAP", "RAT", "RAW", "RAY",
"REB", "RED", "REP", "RET", "RIB", "RID", "RIG", "RIM",
"RIO", "RIP", "ROB", "ROD", "ROE", "RON", "ROT", "ROW",
"ROY", "RUB", "RUE", "RUG", "RUM", "RUN", "RYE", "SAC",
"SAD", "SAG", "SAL", "SAM", "SAN", "SAP", "SAT", "SAW",
"SAY", "SEA", "SEC", "SEE", "SEN", "SET", "SEW", "SHE",
"SHY", "SIN", "SIP", "SIR", "SIS", "SIT", "SKI", "SKY",
"SLY", "SO", "SOB", "SOD", "SON", "SOP", "SOW", "SOY",
"SPA", "SPY", "SUB", "SUD", "SUE", "SUM", "SUN", "SUP",
"TAB", "TAD", "TAG", "TAN", "TAP", "TAR", "TEA", "TED",
"TEE", "TEN", "THE", "THY", "TIC", "TIE", "TIM", "TIN",
"TIP", "TO", "TOE", "TOG", "TOM", "TON", "TOO", "TOP",
"TOW", "TOY", "TRY", "TUB", "TUG", "TUM", "TUN", "TWO",
"UN", "UP", "US", "USE", "VAN", "VAT", "VET", "VIE",
"WAD", "WAG", "WAR", "WAS", "WAY", "WE", "WEB", "WED",
"WEE", "WET", "WHO", "WHY", "WIN", "WIT", "WOK", "WON",
"WOO", "WOW", "WRY", "WU", "YAM", "YAP", "YAW", "YE",
"YEA", "YES", "YET", "YOU", "ABED", "ABEL", "ABET", "ABLE",
"ABUT", "ACHE", "ACID", "ACME", "ACRE", "ACTA", "ACTS", "ADAM",
"ADDS", "ADEN", "AFAR", "AFRO", "AGEE", "AHEM", "AHOY", "AIDA",
"AIDE", "AIDS", "AIRY", "AJAR", "AKIN", "ALAN", "ALEC", "ALGA",
"ALIA", "ALLY", "ALMA", "ALOE", "ALSO", "ALTO", "ALUM", "ALVA",
"AMEN", "AMES", "AMID", "AMMO", "AMOK", "AMOS", "AMRA", "ANDY",
"ANEW", "ANNA", "ANNE", "ANTE", "ANTI", "AQUA", "ARAB", "ARCH",
"AREA", "ARGO", "ARID", "ARMY", "ARTS", "ARTY", "ASIA", "ASKS",
"ATOM", "AUNT", "AURA", "AUTO", "AVER", "AVID", "AVIS", "AVON",
"AVOW", "AWAY", "AWRY", "BABE", "BABY", "BACH", "BACK", "BADE",
"BAIL", "BAIT", "BAKE", "BALD", "BALE", "BALI", "BALK", "BALL",
"BALM", "BAND", "BANE", "BANG", "BANK", "BARB", "BARD", "BARE",
"BARK", "BARN", "BARR", "BASE", "BASH", "BASK", "BASS", "BATE",
"BATH", "BAWD", "BAWL", "BEAD", "BEAK", "BEAM", "BEAN", "BEAR",
"BEAT", "BEAU", "BECK", "BEEF", "BEEN", "BEER", "BEET", "BELA",
"BELL", "BELT", "BEND", "BENT", "BERG", "BERN", "BERT", "BESS",
"BEST", "BETA", "BETH", "BHOY", "BIAS", "BIDE", "BIEN", "BILE",
"BILK", "BILL", "BIND", "BING", "BIRD", "BITE", "BITS", "BLAB",
"BLAT", "BLED", "BLEW", "BLOB", "BLOC", "BLOT", "BLOW", "BLUE",
"BLUM", "BLUR", "BOAR", "BOAT", "BOCA", "BOCK", "BODE", "BODY",
"BOGY", "BOHR", "BOIL", "BOLD", "BOLO", "BOLT", "BOMB", "BONA",
"BOND", "BONE", "BONG", "BONN", "BONY", "BOOK", "BOOM", "BOON",
"BOOT", "BORE", "BORG", "BORN", "BOSE", "BOSS", "BOTH", "BOUT",
"BOWL", "BOYD", "BRAD", "BRAE", "BRAG", "BRAN", "BRAY", "BRED",
"BREW", "BRIG", "BRIM", "BROW", "BUCK", "BUDD", "BUFF", "BULB",
"BULK", "BULL", "BUNK", "BUNT", "BUOY", "BURG", "BURL", "BURN",
"BURR", "BURT", "BURY", "BUSH", "BUSS", "BUST", "BUSY", "BYTE",
"CADY", "CAFE", "CAGE", "CAIN", "CAKE", "CALF", "CALL", "CALM",
"CAME", "CANE", "CANT", "CARD", "CARE", "CARL", "CARR", "CART",
"CASE", "CASH", "CASK", "CAST", "CAVE", "CEIL", "CELL", "CENT",
"CERN", "CHAD", "CHAR", "CHAT", "CHAW", "CHEF", "CHEN", "CHEW",
"CHIC", "CHIN", "CHOU", "CHOW", "CHUB", "CHUG", "CHUM", "CITE",
"CITY", "CLAD", "CLAM", "CLAN", "CLAW", "CLAY", "CLOD", "CLOG",
"CLOT", "CLUB", "CLUE", "COAL", "COAT", "COCA", "COCK", "COCO",
"CODA", "CODE", "CODY", "COED", "COIL", "COIN", "COKE", "COLA",
"COLD", "COLT", "COMA", "COMB", "COME", "COOK", "COOL", "COON",
"COOT", "CORD", "CORE", "CORK", "CORN", "COST", "COVE", "COWL",
"CRAB", "CRAG", "CRAM", "CRAY", "CREW", "CRIB", "CROW", "CRUD",
"CUBA", "CUBE", "CUFF", "CULL", "CULT", "CUNY", "CURB", "CURD",
"CURE", "CURL", "CURT", "CUTS", "DADE", "DALE", "DAME", "DANA",
"DANE", "DANG", "DANK", "DARE", "DARK", "DARN", "DART", "DASH",
"DATA", "DATE", "DAVE", "DAVY", "DAWN", "DAYS", "DEAD", "DEAF",
"DEAL", "DEAN", "DEAR", "DEBT", "DECK", "DEED", "DEEM", "DEER",
"DEFT", "DEFY", "DELL", "DENT", "DENY", "DESK", "DIAL", "DICE",
"DIED", "DIET", "DIME", "DINE", "DING", "DINT", "DIRE", "DIRT",
"DISC", "DISH", "DISK", "DIVE", "DOCK", "DOES", "DOLE", "DOLL",
"DOLT", "DOME", "DONE", "DOOM", "DOOR", "DORA", "DOSE", "DOTE",
"DOUG", "DOUR", "DOVE", "DOWN", "DRAB", "DRAG", "DRAM", "DRAW",
"DREW", "DRUB", "DRUG", "DRUM", "DUAL", "DUCK", "DUCT", "DUEL",
"DUET", "DUKE", "DULL", "DUMB", "DUNE", "DUNK", "DUSK", "DUST",
"DUTY", "EACH", "EARL", "EARN", "EASE", "EAST", "EASY", "EBEN",
"ECHO", "EDDY", "EDEN", "EDGE", "EDGY", "EDIT", "EDNA", "EGAN",
"ELAN", "ELBA", "ELLA", "ELSE", "EMIL", "EMIT", "EMMA", "ENDS",
"ERIC", "EROS", "EVEN", "EVER", "EVIL", "EYED", "FACE", "FACT",
"FADE", "FAIL", "FAIN", "FAIR", "FAKE", "FALL", "FAME", "FANG",
"FARM", "FAST", "FATE", "FAWN", "FEAR", "FEAT", "FEED", "FEEL",
"FEET", "FELL", "FELT", "FEND", "FERN", "FEST", "FEUD", "FIEF",
"FIGS", "FILE", "FILL", "FILM", "FIND", "FINE", "FINK", "FIRE",
"FIRM", "FISH", "FISK", "FIST", "FITS", "FIVE", "FLAG", "FLAK",
"FLAM", "FLAT", "FLAW", "FLEA", "FLED", "FLEW", "FLIT", "FLOC",
"FLOG", "FLOW", "FLUB", "FLUE", "FOAL", "FOAM", "FOGY", "FOIL",
"FOLD", "FOLK", "FOND", "FONT", "FOOD", "FOOL", "FOOT", "FORD",
"FORE", "FORK", "FORM", "FORT", "FOSS", "FOUL", "FOUR", "FOWL",
"FRAU", "FRAY", "FRED", "FREE", "FRET", "FREY", "FROG", "FROM",
"FUEL", "FULL", "FUME", "FUND", "FUNK", "FURY", "FUSE", "FUSS",
"GAFF", "GAGE", "GAIL", "GAIN", "GAIT", "GALA", "GALE", "GALL",
"GALT", "GAME", "GANG", "GARB", "GARY", "GASH", "GATE", "GAUL",
"GAUR", "GAVE", "GAWK", "GEAR", "GELD", "GENE", "GENT", "GERM",
"GETS", "GIBE", "GIFT", "GILD", "GILL", "GILT", "GINA", "GIRD",
"GIRL", "GIST", "GIVE", "GLAD", "GLEE", "GLEN", "GLIB", "GLOB",
"GLOM", "GLOW", "GLUE", "GLUM", "GLUT", "GOAD", "GOAL", "GOAT",
"GOER", "GOES", "GOLD", "GOLF", "GONE", "GONG", "GOOD", "GOOF",
"GORE", "GORY", "GOSH", "GOUT", "GOWN", "GRAB", "GRAD", "GRAY",
"GREG", "GREW", "GREY", "GRID", "GRIM", "GRIN", "GRIT", "GROW",
"GRUB", "GULF", "GULL", "GUNK", "GURU", "GUSH", "GUST", "GWEN",
"GWYN", "HAAG", "HAAS", "HACK", "HAIL", "HAIR", "HALE", "HALF",
"HALL", "HALO", "HALT", "HAND", "HANG", "HANK", "HANS", "HARD",
"HARK", "HARM", "HART", "HASH", "HAST", "HATE", "HATH", "HAUL",
"HAVE", "HAWK", "HAYS", "HEAD", "HEAL", "HEAR", "HEAT", "HEBE",
"HECK", "HEED", "HEEL", "HEFT", "HELD", "HELL", "HELM", "HERB",
"HERD", "HERE", "HERO", "HERS", "HESS", "HEWN", "HICK", "HIDE",
"HIGH", "HIKE", "HILL", "HILT", "HIND", "HINT", "HIRE", "HISS",
"HIVE", "HOBO", "HOCK", "HOFF", "HOLD", "HOLE", "HOLM", "HOLT",
"HOME", "HONE", "HONK", "HOOD", "HOOF", "HOOK", "HOOT", "HORN",
"HOSE", "HOST", "HOUR", "HOVE", "HOWE", "HOWL", "HOYT", "HUCK",
"HUED", "HUFF", "HUGE", "HUGH", "HUGO", "HULK", "HULL", "HUNK",
"HUNT", "HURD", "HURL", "HURT", "HUSH", "HYDE", "HYMN", "IBIS",
"ICON", "IDEA", "IDLE", "IFFY", "INCA", "INCH", "INTO", "IONS",
"IOTA", "IOWA", "IRIS", "IRMA", "IRON", "ISLE", "ITCH", "ITEM",
"IVAN", "JACK", "JADE", "JAIL", "JAKE", "JANE", "JAVA", "JEAN",
"JEFF", "JERK", "JESS", "JEST", "JIBE", "JILL", "JILT", "JIVE",
"JOAN", "JOBS", "JOCK", "JOEL", "JOEY", "JOHN", "JOIN", "JOKE",
"JOLT", "JOVE", "JUDD", "JUDE", "JUDO", "JUDY", "JUJU", "JUKE",
"JULY", "JUNE", "JUNK", "JUNO", "JURY", "JUST", "JUTE", "KAHN",
"KALE", "KANE", "KANT", "KARL", "KATE", "KEEL", "KEEN", "KENO",
"KENT", "KERN", "KERR", "KEYS", "KICK", "KILL", "KIND", "KING",
"KIRK", "KISS", "KITE", "KLAN", "KNEE", "KNEW", "KNIT", "KNOB",
"KNOT", "KNOW", "KOCH", "KONG", "KUDO", "KURD", "KURT", "KYLE",
"LACE", "LACK", "LACY", "LADY", "LAID", "LAIN", "LAIR", "LAKE",
"LAMB", "LAME", "LAND", "LANE", "LANG", "LARD", "LARK", "LASS",
"LAST", "LATE", "LAUD", "LAVA", "LAWN", "LAWS", "LAYS", "LEAD",
"LEAF", "LEAK", "LEAN", "LEAR", "LEEK", "LEER", "LEFT", "LEND",
"LENS", "LENT", "LEON", "LESK", "LESS", "LEST", "LETS", "LIAR",
"LICE", "LICK", "LIED", "LIEN", "LIES", "LIEU", "LIFE", "LIFT",
"LIKE", "LILA", "LILT", "LILY", "LIMA", "LIMB", "LIME", "LIND",
"LINE", "LINK", "LINT", "LION", "LISA", "LIST", "LIVE", "LOAD",
"LOAF", "LOAM", "LOAN", "LOCK", "LOFT", "LOGE", "LOIS", "LOLA",
"LONE", "LONG", "LOOK", "LOON", "LOOT", "LORD", "LORE", "LOSE",
"LOSS", "LOST", "LOUD", "LOVE", "LOWE", "LUCK", "LUCY", "LUGE",
"LUKE", "LULU", "LUND", "LUNG", "LURA", "LURE", "LURK", "LUSH",
"LUST", "LYLE", "LYNN", "LYON", "LYRA", "MACE", "MADE", "MAGI",
"MAID", "MAIL", "MAIN", "MAKE", "MALE", "MALI", "MALL", "MALT",
"MANA", "MANN", "MANY", "MARC", "MARE", "MARK", "MARS", "MART",
"MARY", "MASH", "MASK", "MASS", "MAST", "MATE", "MATH", "MAUL",
"MAYO", "MEAD", "MEAL", "MEAN", "MEAT", "MEEK", "MEET", "MELD",
"MELT", "MEMO", "MEND", "MENU", "MERT", "MESH", "MESS", "MICE",
"MIKE", "MILD", "MILE", "MILK", "MILL", "MILT", "MIMI", "MIND",
"MINE", "MINI", "MINK", "MINT", "MIRE", "MISS", "MIST", "MITE",
"MITT", "MOAN", "MOAT", "MOCK", "MODE", "MOLD", "MOLE", "MOLL",
"MOLT", "MONA", "MONK", "MONT", "MOOD", "MOON", "MOOR", "MOOT",
"MORE", "MORN", "MORT", "MOSS", "MOST", "MOTH", "MOVE", "MUCH",
"MUCK", "MUDD", "MUFF", "MULE", "MULL", "MURK", "MUSH", "MUST",
"MUTE", "MUTT", "MYRA", "MYTH", "NAGY", "NAIL", "NAIR", "NAME",
"NARY", "NASH", "NAVE", "NAVY", "NEAL", "NEAR", "NEAT", "NECK",
"NEED", "NEIL", "NELL", "NEON", "NERO", "NESS", "NEST", "NEWS",
"NEWT", "NIBS", "NICE", "NICK", "NILE", "NINA", "NINE", "NOAH",
"NODE", "NOEL", "NOLL", "NONE", "NOOK", "NOON", "NORM", "NOSE",
"NOTE", "NOUN", "NOVA", "NUDE", "NULL", "NUMB", "OATH", "OBEY",
"OBOE", "ODIN", "OHIO", "OILY", "OINT", "OKAY", "OLAF", "OLDY",
"OLGA", "OLIN", "OMAN", "OMEN", "OMIT", "ONCE", "ONES", "ONLY",
"ONTO", "ONUS", "ORAL", "ORGY", "OSLO", "OTIS", "OTTO", "OUCH",
"OUST", "OUTS", "OVAL", "OVEN", "OVER", "OWLY", "OWNS", "QUAD",
"QUIT", "QUOD", "RACE", "RACK", "RACY", "RAFT", "RAGE", "RAID",
"RAIL", "RAIN", "RAKE", "RANK", "RANT", "RARE", "RASH", "RATE",
"RAVE", "RAYS", "READ", "REAL", "REAM", "REAR", "RECK", "REED",
"REEF", "REEK", "REEL", "REID", "REIN", "RENA", "REND", "RENT",
"REST", "RICE", "RICH", "RICK", "RIDE", "RIFT", "RILL", "RIME",
"RING", "RINK", "RISE", "RISK", "RITE", "ROAD", "ROAM", "ROAR",
"ROBE", "ROCK", "RODE", "ROIL", "ROLL", "ROME", "ROOD", "ROOF",
"ROOK", "ROOM", "ROOT", "ROSA", "ROSE", "ROSS", "ROSY", "ROTH",
"ROUT", "ROVE", "ROWE", "ROWS", "RUBE", "RUBY", "RUDE", "RUDY",
"RUIN", "RULE", "RUNG", "RUNS", "RUNT", "RUSE", "RUSH", "RUSK",
"RUSS", "RUST", "RUTH", "SACK", "SAFE", "SAGE", "SAID", "SAIL",
"SALE", "SALK", "SALT", "SAME", "SAND", "SANE", "SANG", "SANK",
"SARA", "SAUL", "SAVE", "SAYS", "SCAN", "SCAR", "SCAT", "SCOT",
"SEAL", "SEAM", "SEAR", "SEAT", "SEED", "SEEK", "SEEM", "SEEN",
"SEES", "SELF", "SELL", "SEND", "SENT", "SETS", "SEWN", "SHAG",
"SHAM", "SHAW", "SHAY", "SHED", "SHIM", "SHIN", "SHOD", "SHOE",
"SHOT", "SHOW", "SHUN", "SHUT", "SICK", "SIDE", "SIFT", "SIGH",
"SIGN", "SILK", "SILL", "SILO", "SILT", "SINE", "SING", "SINK",
"SIRE", "SITE", "SITS", "SITU", "SKAT", "SKEW", "SKID", "SKIM",
"SKIN", "SKIT", "SLAB", "SLAM", "SLAT", "SLAY", "SLED", "SLEW",
"SLID", "SLIM", "SLIT", "SLOB", "SLOG", "SLOT", "SLOW", "SLUG",
"SLUM", "SLUR", "SMOG", "SMUG", "SNAG", "SNOB", "SNOW", "SNUB",
"SNUG", "SOAK", "SOAR", "SOCK", "SODA", "SOFA", "SOFT", "SOIL",
"SOLD", "SOME", "SONG", "SOON", "SOOT", "SORE", "SORT", "SOUL",
"SOUR", "SOWN", "STAB", "STAG", "STAN", "STAR", "STAY", "STEM",
"STEW", "STIR", "STOW", "STUB", "STUN", "SUCH", "SUDS", "SUIT",
"SULK", "SUMS", "SUNG", "SUNK", "SURE", "SURF", "SWAB", "SWAG",
"SWAM", "SWAN", "SWAT", "SWAY", "SWIM", "SWUM", "TACK", "TACT",
"TAIL", "TAKE", "TALE", "TALK", "TALL", "TANK", "TASK", "TATE",
"TAUT", "TEAL", "TEAM", "TEAR", "TECH", "TEEM", "TEEN", "TEET",
"TELL", "TEND", "TENT", "TERM", "TERN", "TESS", "TEST", "THAN",
"THAT", "THEE", "THEM", "THEN", "THEY", "THIN", "THIS", "THUD",
"THUG", "TICK", "TIDE", "TIDY", "TIED", "TIER", "TILE", "TILL",
"TILT", "TIME", "TINA", "TINE", "TINT", "TINY", "TIRE", "TOAD",
"TOGO", "TOIL", "TOLD", "TOLL", "TONE", "TONG", "TONY", "TOOK",
"TOOL", "TOOT", "TORE", "TORN", "TOTE", "TOUR", "TOUT", "TOWN",
"TRAG", "TRAM", "TRAY", "TREE", "TREK", "TRIG", "TRIM", "TRIO",
"TROD", "TROT", "TROY", "TRUE", "TUBA", "TUBE", "TUCK", "TUFT",
"TUNA", "TUNE", "TUNG", "TURF", "TURN", "TUSK", "TWIG", "TWIN",
"TWIT", "ULAN", "UNIT", "URGE", "USED", "USER", "USES", "UTAH",
"VAIL", "VAIN", "VALE", "VARY", "VASE", "VAST", "VEAL", "VEDA",
"VEIL", "VEIN", "VEND", "VENT", "VERB", "VERY", "VETO", "VICE",
"VIEW", "VINE", "VISE", "VOID", "VOLT", "VOTE", "WACK", "WADE",
"WAGE", "WAIL", "WAIT", "WAKE", "WALE", "WALK", "WALL", "WALT",
"WAND", "WANE", "WANG", "WANT", "WARD", "WARM", "WARN", "WART",
"WASH", "WAST", "WATS", "WATT", "WAVE", "WAVY", "WAYS", "WEAK",
"WEAL", "WEAN", "WEAR", "WEED", "WEEK", "WEIR", "WELD", "WELL",
"WELT", "WENT", "WERE", "WERT", "WEST", "WHAM", "WHAT", "WHEE",
"WHEN", "WHET", "WHOA", "WHOM", "WICK", "WIFE", "WILD", "WILL",
"WIND", "WINE", "WING", "WINK", "WINO", "WIRE", "WISE", "WISH",
"WITH", "WOLF", "WONT", "WOOD", "WOOL", "WORD", "WORE", "WORK", "WORM", "WORN",
"WOVE", "WRIT", "WYNN", "YALE", "YANG", "YANK", "YARD", "YARN",
"YAWL", "YAWN", "YEAH", "YEAR", "YELL", "YOGA", "YOKE" };
} /* End of class otp */
/* Class for implementing md4 hash algorithm (and hopefully md5 eventually).
* There are constructors for prepping the hash algorithm (doing the
* padding, mainly) for a String or a byte[], and an mdcalc() method
* for generating the hash. The results can be accessed as an int array
* by getregs(), or as a String of hex digits with toString().
*
* Copyright 1996 Harry Mantakos, harry@cs.umd.edu
*/
class md4 extends md {
md4(String s) {
super(s);
}
md4(byte in[]) {
super(in);
}
static int F(int x, int y, int z) {
return ((x & y) | (~x & z));
}
static int G(int x, int y, int z) {
return ((x & y) | (x & z) | (y & z));
}
static int H(int x, int y, int z) {
return (x ^ y ^ z);
}
void round1(int blk) {
A = rotintlft((A + F(B, C, D) + d[0 + 16 * blk]), 3);
D = rotintlft((D + F(A, B, C) + d[1 + 16 * blk]), 7);
C = rotintlft((C + F(D, A, B) + d[2 + 16 * blk]), 11);
B = rotintlft((B + F(C, D, A) + d[3 + 16 * blk]), 19);
A = rotintlft((A + F(B, C, D) + d[4 + 16 * blk]), 3);
D = rotintlft((D + F(A, B, C) + d[5 + 16 * blk]), 7);
C = rotintlft((C + F(D, A, B) + d[6 + 16 * blk]), 11);
B = rotintlft((B + F(C, D, A) + d[7 + 16 * blk]), 19);
A = rotintlft((A + F(B, C, D) + d[8 + 16 * blk]), 3);
D = rotintlft((D + F(A, B, C) + d[9 + 16 * blk]), 7);
C = rotintlft((C + F(D, A, B) + d[10 + 16 * blk]), 11);
B = rotintlft((B + F(C, D, A) + d[11 + 16 * blk]), 19);
A = rotintlft((A + F(B, C, D) + d[12 + 16 * blk]), 3);
D = rotintlft((D + F(A, B, C) + d[13 + 16 * blk]), 7);
C = rotintlft((C + F(D, A, B) + d[14 + 16 * blk]), 11);
B = rotintlft((B + F(C, D, A) + d[15 + 16 * blk]), 19);
}
void round2(int blk) {
A = rotintlft((A + G(B, C, D) + d[0 + 16 * blk] + 0x5a827999), 3);
D = rotintlft((D + G(A, B, C) + d[4 + 16 * blk] + 0x5a827999), 5);
C = rotintlft((C + G(D, A, B) + d[8 + 16 * blk] + 0x5a827999), 9);
B = rotintlft((B + G(C, D, A) + d[12 + 16 * blk] + 0x5a827999), 13);
A = rotintlft((A + G(B, C, D) + d[1 + 16 * blk] + 0x5a827999), 3);
D = rotintlft((D + G(A, B, C) + d[5 + 16 * blk] + 0x5a827999), 5);
C = rotintlft((C + G(D, A, B) + d[9 + 16 * blk] + 0x5a827999), 9);
B = rotintlft((B + G(C, D, A) + d[13 + 16 * blk] + 0x5a827999), 13);
A = rotintlft((A + G(B, C, D) + d[2 + 16 * blk] + 0x5a827999), 3);
D = rotintlft((D + G(A, B, C) + d[6 + 16 * blk] + 0x5a827999), 5);
C = rotintlft((C + G(D, A, B) + d[10 + 16 * blk] + 0x5a827999), 9);
B = rotintlft((B + G(C, D, A) + d[14 + 16 * blk] + 0x5a827999), 13);
A = rotintlft((A + G(B, C, D) + d[3 + 16 * blk] + 0x5a827999), 3);
D = rotintlft((D + G(A, B, C) + d[7 + 16 * blk] + 0x5a827999), 5);
C = rotintlft((C + G(D, A, B) + d[11 + 16 * blk] + 0x5a827999), 9);
B = rotintlft((B + G(C, D, A) + d[15 + 16 * blk] + 0x5a827999), 13);
}
void round3(int blk) {
A = rotintlft((A + H(B, C, D) + d[0 + 16 * blk] + 0x6ed9eba1), 3);
D = rotintlft((D + H(A, B, C) + d[8 + 16 * blk] + 0x6ed9eba1), 9);
C = rotintlft((C + H(D, A, B) + d[4 + 16 * blk] + 0x6ed9eba1), 11);
B = rotintlft((B + H(C, D, A) + d[12 + 16 * blk] + 0x6ed9eba1), 15);
A = rotintlft((A + H(B, C, D) + d[2 + 16 * blk] + 0x6ed9eba1), 3);
D = rotintlft((D + H(A, B, C) + d[10 + 16 * blk] + 0x6ed9eba1), 9);
C = rotintlft((C + H(D, A, B) + d[6 + 16 * blk] + 0x6ed9eba1), 11);
B = rotintlft((B + H(C, D, A) + d[14 + 16 * blk] + 0x6ed9eba1), 15);
A = rotintlft((A + H(B, C, D) + d[1 + 16 * blk] + 0x6ed9eba1), 3);
D = rotintlft((D + H(A, B, C) + d[9 + 16 * blk] + 0x6ed9eba1), 9);
C = rotintlft((C + H(D, A, B) + d[5 + 16 * blk] + 0x6ed9eba1), 11);
B = rotintlft((B + H(C, D, A) + d[13 + 16 * blk] + 0x6ed9eba1), 15);
A = rotintlft((A + H(B, C, D) + d[3 + 16 * blk] + 0x6ed9eba1), 3);
D = rotintlft((D + H(A, B, C) + d[11 + 16 * blk] + 0x6ed9eba1), 9);
C = rotintlft((C + H(D, A, B) + d[7 + 16 * blk] + 0x6ed9eba1), 11);
B = rotintlft((B + H(C, D, A) + d[15 + 16 * blk] + 0x6ed9eba1), 15);
}
void round4(int blk) {
System.out.println(" must be md5, in round4!");
}
}
class md5 extends md {
md5(String s) {
super(s);
}
md5(byte in[]) {
super(in);
}
static int F(int x, int y, int z) {
return ((x & y) | (~x & z));
}
static int G(int x, int y, int z) {
return ((x & z) | (y & ~z));
}
static int H(int x, int y, int z) {
return (x ^ y ^ z);
}
static int I(int x, int y, int z) {
return (y ^ (x | ~z));
}
void round1(int blk) {
A = rotintlft(A + F(B, C, D) + d[0 + 16 * blk] + 0xd76aa478, 7) + B;
D = rotintlft(D + F(A, B, C) + d[1 + 16 * blk] + 0xe8c7b756, 12) + A;
C = rotintlft(C + F(D, A, B) + d[2 + 16 * blk] + 0x242070db, 17) + D;
B = rotintlft(B + F(C, D, A) + d[3 + 16 * blk] + 0xc1bdceee, 22) + C;
A = rotintlft(A + F(B, C, D) + d[4 + 16 * blk] + 0xf57c0faf, 7) + B;
D = rotintlft(D + F(A, B, C) + d[5 + 16 * blk] + 0x4787c62a, 12) + A;
C = rotintlft(C + F(D, A, B) + d[6 + 16 * blk] + 0xa8304613, 17) + D;
B = rotintlft(B + F(C, D, A) + d[7 + 16 * blk] + 0xfd469501, 22) + C;
A = rotintlft(A + F(B, C, D) + d[8 + 16 * blk] + 0x698098d8, 7) + B;
D = rotintlft(D + F(A, B, C) + d[9 + 16 * blk] + 0x8b44f7af, 12) + A;
C = rotintlft(C + F(D, A, B) + d[10 + 16 * blk] + 0xffff5bb1, 17) + D;
B = rotintlft(B + F(C, D, A) + d[11 + 16 * blk] + 0x895cd7be, 22) + C;
A = rotintlft(A + F(B, C, D) + d[12 + 16 * blk] + 0x6b901122, 7) + B;
D = rotintlft(D + F(A, B, C) + d[13 + 16 * blk] + 0xfd987193, 12) + A;
C = rotintlft(C + F(D, A, B) + d[14 + 16 * blk] + 0xa679438e, 17) + D;
B = rotintlft(B + F(C, D, A) + d[15 + 16 * blk] + 0x49b40821, 22) + C;
}
void round2(int blk) {
A = rotintlft(A + G(B, C, D) + d[1 + 16 * blk] + 0xf61e2562, 5) + B;
D = rotintlft(D + G(A, B, C) + d[6 + 16 * blk] + 0xc040b340, 9) + A;
C = rotintlft(C + G(D, A, B) + d[11 + 16 * blk] + 0x265e5a51, 14) + D;
B = rotintlft(B + G(C, D, A) + d[0 + 16 * blk] + 0xe9b6c7aa, 20) + C;
A = rotintlft(A + G(B, C, D) + d[5 + 16 * blk] + 0xd62f105d, 5) + B;
D = rotintlft(D + G(A, B, C) + d[10 + 16 * blk] + 0x02441453, 9) + A;
C = rotintlft(C + G(D, A, B) + d[15 + 16 * blk] + 0xd8a1e681, 14) + D;
B = rotintlft(B + G(C, D, A) + d[4 + 16 * blk] + 0xe7d3fbc8, 20) + C;
A = rotintlft(A + G(B, C, D) + d[9 + 16 * blk] + 0x21e1cde6, 5) + B;
D = rotintlft(D + G(A, B, C) + d[14 + 16 * blk] + 0xc33707d6, 9) + A;
C = rotintlft(C + G(D, A, B) + d[3 + 16 * blk] + 0xf4d50d87, 14) + D;
B = rotintlft(B + G(C, D, A) + d[8 + 16 * blk] + 0x455a14ed, 20) + C;
A = rotintlft(A + G(B, C, D) + d[13 + 16 * blk] + 0xa9e3e905, 5) + B;
D = rotintlft(D + G(A, B, C) + d[2 + 16 * blk] + 0xfcefa3f8, 9) + A;
C = rotintlft(C + G(D, A, B) + d[7 + 16 * blk] + 0x676f02d9, 14) + D;
B = rotintlft(B + G(C, D, A) + d[12 + 16 * blk] + 0x8d2a4c8a, 20) + C;
}
void round3(int blk) {
A = rotintlft(A + H(B, C, D) + d[5 + 16 * blk] + 0xfffa3942, 4) + B;
D = rotintlft(D + H(A, B, C) + d[8 + 16 * blk] + 0x8771f681, 11) + A;
C = rotintlft(C + H(D, A, B) + d[11 + 16 * blk] + 0x6d9d6122, 16) + D;
B = rotintlft(B + H(C, D, A) + d[14 + 16 * blk] + 0xfde5380c, 23) + C;
A = rotintlft(A + H(B, C, D) + d[1 + 16 * blk] + 0xa4beea44, 4) + B;
D = rotintlft(D + H(A, B, C) + d[4 + 16 * blk] + 0x4bdecfa9, 11) + A;
C = rotintlft(C + H(D, A, B) + d[7 + 16 * blk] + 0xf6bb4b60, 16) + D;
B = rotintlft(B + H(C, D, A) + d[10 + 16 * blk] + 0xbebfbc70, 23) + C;
A = rotintlft(A + H(B, C, D) + d[13 + 16 * blk] + 0x289b7ec6, 4) + B;
D = rotintlft(D + H(A, B, C) + d[0 + 16 * blk] + 0xeaa127fa, 11) + A;
C = rotintlft(C + H(D, A, B) + d[3 + 16 * blk] + 0xd4ef3085, 16) + D;
B = rotintlft(B + H(C, D, A) + d[6 + 16 * blk] + 0x04881d05, 23) + C;
A = rotintlft(A + H(B, C, D) + d[9 + 16 * blk] + 0xd9d4d039, 4) + B;
D = rotintlft(D + H(A, B, C) + d[12 + 16 * blk] + 0xe6db99e5, 11) + A;
C = rotintlft(C + H(D, A, B) + d[15 + 16 * blk] + 0x1fa27cf8, 16) + D;
B = rotintlft(B + H(C, D, A) + d[2 + 16 * blk] + 0xc4ac5665, 23) + C;
}
void round4(int blk) {
A = rotintlft(A + I(B, C, D) + d[0 + 16 * blk] + 0xf4292244, 6) + B;
D = rotintlft(D + I(A, B, C) + d[7 + 16 * blk] + 0x432aff97, 10) + A;
C = rotintlft(C + I(D, A, B) + d[14 + 16 * blk] + 0xab9423a7, 15) + D;
B = rotintlft(B + I(C, D, A) + d[5 + 16 * blk] + 0xfc93a039, 21) + C;
A = rotintlft(A + I(B, C, D) + d[12 + 16 * blk] + 0x655b59c3, 6) + B;
D = rotintlft(D + I(A, B, C) + d[3 + 16 * blk] + 0x8f0ccc92, 10) + A;
C = rotintlft(C + I(D, A, B) + d[10 + 16 * blk] + 0xffeff47d, 15) + D;
B = rotintlft(B + I(C, D, A) + d[1 + 16 * blk] + 0x85845dd1, 21) + C;
A = rotintlft(A + I(B, C, D) + d[8 + 16 * blk] + 0x6fa87e4f, 6) + B;
D = rotintlft(D + I(A, B, C) + d[15 + 16 * blk] + 0xfe2ce6e0, 10) + A;
C = rotintlft(C + I(D, A, B) + d[6 + 16 * blk] + 0xa3014314, 15) + D;
B = rotintlft(B + I(C, D, A) + d[13 + 16 * blk] + 0x4e0811a1, 21) + C;
A = rotintlft(A + I(B, C, D) + d[4 + 16 * blk] + 0xf7537e82, 6) + B;
D = rotintlft(D + I(A, B, C) + d[11 + 16 * blk] + 0xbd3af235, 10) + A;
C = rotintlft(C + I(D, A, B) + d[2 + 16 * blk] + 0x2ad7d2bb, 15) + D;
B = rotintlft(B + I(C, D, A) + d[9 + 16 * blk] + 0xeb86d391, 21) + C;
}
}
class md {
int A, B, C, D;
int d[];
int numwords;
/*
* For verification of a modicum of sanity, run a few test strings through
*/
public static void main(String[] argv) {
boolean doinmd4;
String mdtype;
/* Test cases, mostly taken from rfc 1320 */
String str[] = {
"",
"a",
"abc",
"message digest",
"abcdefghijklmnopqrstuvwxyz",
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
"12345678901234567890123456789012345678901234567890123456789012345678901234567890",
"01234567890123456789012345678901234567890123456789012345" };
if (argv.length == 0) {
mdtype = "md4";
doinmd4 = true;
} else if (argv.length > 1) {
System.err.println("Usage: md [4|5|md4|md5]");
return;
} else if ((argv[0].equals("4")) || (argv[0].equals("md4"))) {
mdtype = "md4";
doinmd4 = true;
} else if ((argv[0].equals("5")) || (argv[0].equals("md5"))) {
mdtype = "md5";
doinmd4 = false;
} else {
System.err.println("Usage: md [4|5|md4|md5]");
return;
}
for (int i = 0; i < str.length; i++) {
if (doinmd4) {
md4 mdc = new md4(str[i]);
mdc.calc();
System.out.println(mdtype + "(\"" + str[i] + "\") = " + mdc);
} else {
md5 mdc = new md5(str[i]);
mdc.calc();
System.out.println(mdtype + "(\"" + str[i] + "\") = " + mdc);
}
}
}
md(String s) {
byte in[] = new byte[s.length()];
int i;
for (i = 0; i < s.length(); i++) {
in[i] = (byte) (s.charAt(i) & 0xff);
}
mdinit(in);
}
md(byte in[]) {
mdinit(in);
}
void mdinit(byte in[]) {
int newlen, endblklen, pad, i;
long datalenbits;
datalenbits = in.length * 8;
endblklen = in.length % 64;
if (endblklen < 56) {
pad = 64 - endblklen;
} else {
pad = (64 - endblklen) + 64;
}
newlen = in.length + pad;
byte b[] = new byte[newlen];
for (i = 0; i < in.length; i++) {
b[i] = in[i];
}
b[in.length] = (byte) 0x80;
for (i = b.length + 1; i < (newlen - 8); i++) {
b[i] = 0;
}
for (i = 0; i < 8; i++) {
b[newlen - 8 + i] = (byte) (datalenbits & 0xff);
datalenbits >>= 8;
}
/* init registers */
A = 0x67452301;
B = 0xefcdab89;
C = 0x98badcfe;
D = 0x10325476;
this.numwords = newlen / 4;
this.d = new int[this.numwords];
for (i = 0; i < newlen; i += 4) {
this.d[i / 4] = (b[i] & 0xff) + ((b[i + 1] & 0xff) << 8)
+ ((b[i + 2] & 0xff) << 16) + ((b[i + 3] & 0xff) << 24);
}
}
public String toString() {
String s;
return (tohex(A) + tohex(B) + tohex(C) + tohex(D));
}
int[] getregs() {
int regs[] = { this.A, this.B, this.C, this.D };
return regs;
}
void calc() {
int AA, BB, CC, DD, i;
for (i = 0; i < numwords / 16; i++) {
AA = A;
BB = B;
CC = C;
DD = D;
round1(i);
round2(i);
round3(i);
if (this instanceof md5) {
round4(i);
}
A += AA;
B += BB;
C += CC;
D += DD;
}
}
/*
* Dummy round*() methods. these are overriden in the md4 and md5 subclasses
*/
void round1(int blk) {
System.err.println("Danger! Danger! Someone called md.round1()!");
}
void round2(int blk) {
System.err.println("Danger! Danger! Someone called md.round2()!");
}
void round3(int blk) {
System.err.println("Danger! Danger! Someone called md.round3()!");
}
void round4(int blk) {
System.err.println("Danger! Danger! Someone called md.round4()!");
}
static int rotintlft(int val, int numbits) {
return ((val << numbits) | (val >>> (32 - numbits)));
}
static String tohex(int i) {
int b;
String tmpstr;
tmpstr = "";
for (b = 0; b < 4; b++) {
tmpstr += Integer.toString((i >> 4) & 0xf, 16)
+ Integer.toString(i & 0xf, 16);
i >>= 8;
}
return tmpstr;
}
}
Related examples in the same category
