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from_cryptag.go
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// Steve Phillips / elimisteve
// 2017.01.13 / 2023.05.20
// Originally copied from github.com/cryptag/cryptag/share/keys.go
package minileap
import (
"crypto/ed25519"
"crypto/rand"
"crypto/sha512"
"fmt"
"math/big"
"github.com/cathalgarvey/base58"
"github.com/cryptag/go-minilock/taber"
)
// OldKeyPair generates an "email" from the given passphrase if
// `email` is empty, then uses that email/passphrase pair to generate
// a new keypair.
//
// Obsolete; Ed25519 > Curve25519 as the user's public identity.
//
// Use NewIdentity() instead.
func OldKeyPair(email, passphrase string) (keypair *taber.Keys, err error) {
if email == "" {
email = EmailFromPassphrase(passphrase)
}
// Returns miniLock-compatible keypair
return taber.FromEmailAndPassphrase(email, passphrase)
}
type Identity struct {
SignFullPrivate []byte
SignPublic []byte
Private []byte
Public []byte
}
func (id *Identity) EncodeID() (string, error) {
if len(id.SignPublic) != ValidKeyLength {
return "", ErrInvalidKey
}
return string(base58.StdEncoding.Encode(id.SignPublic)), nil
}
func (id *Identity) Wipe() {
// Wipe both halves
copy(id.SignFullPrivate[0:32], empty32ByteArray[:])
copy(id.SignFullPrivate[32:64], empty32ByteArray[:])
copy(id.Private, empty32ByteArray[:])
}
// NewIdentity generates an "email" from the given passphrase, then
// uses that email/passphrase pair to generate a new keypair.... which
// is then used to seed an Ed25519 keypair, from which a Curve25519
// keypair is derived.
func NewIdentity(email, passphrase string) (*Identity, error) {
minilockPair, err := OldKeyPair(email, passphrase)
if err != nil {
return nil, err
}
// Use miniLock private key to seed new signing keypair
// signFullPrivKey consists of the 32-byte private key
// _concatenated with_ the 32-byte public key, for Efficiency :tm:
signFullPrivKey := ed25519.NewKeyFromSeed(minilockPair.Private)
curvePriv, err := PrivateEd25519ToCurve25519(signFullPrivKey[:32])
if err != nil {
return nil, err
}
// 'Tis correct: https://cs.opensource.google/go/go/+/refs/tags/go1.20.5:src/crypto/ed25519/ed25519.go;l=152
signPubKey := signFullPrivKey[32:]
curvePub, err := PublicEd25519ToCurve25519(signPubKey)
if err != nil {
return nil, err
}
ident := &Identity{
SignFullPrivate: signFullPrivKey, // All the other keys are derived from this
SignPublic: signPubKey, // AccountID == string(base58.StdEncoding.Encode(SignPublic))
Private: curvePriv,
Public: curvePub,
}
return ident, nil
}
// EmailFromPassphrase generates an "email" suitable for combining
// with the given passphrase for use in generating a
// miniLock/session25519 key pair.
func EmailFromPassphrase(passphrase string) string {
hash := sha512.Sum384([]byte(passphrase))
return fmt.Sprintf("%x", hash) + "@cryptag.org"
}
// RandomPassphrase uses a capitalized version of the EFF's
// user-friendly wordlist (see
// https://www.eff.org/deeplinks/2016/07/new-wordlists-random-passphrases)
// to generate a random passphrase consisting of numWords words. Each
// additional word contributes 10.34 bits of entropy to the overall
// strength of the resulting passphrase.
func RandomPassphrase(numWords int) (string, error) {
passphrase := ""
max := int64(len(wordlist))
for i := 0; i < numWords; i++ {
ndx, err := rand.Int(rand.Reader, big.NewInt(max))
if err != nil {
return "", err
}
passphrase += wordlist[int(ndx.Int64())]
}
return passphrase, nil
}
var wordlist = []string{
"Aardvark",
"Abandoned",
"Abbreviate",
"Abdomen",
"Abhorrence",
"Abiding",
"Abnormal",
"Abrasion",
"Absorbing",
"Abundant",
"Abyss",
"Academy",
"Accountant",
"Acetone",
"Achiness",
"Acid",
"Acoustics",
"Acquire",
"Acrobat",
"Actress",
"Acuteness",
"Aerosol",
"Aesthetic",
"Affidavit",
"Afloat",
"Afraid",
"Aftershave",
"Again",
"Agency",
"Aggressor",
"Aghast",
"Agitate",
"Agnostic",
"Agonizing",
"Agreeing",
"Aidless",
"Aimlessly",
"Ajar",
"Alarmclock",
"Albatross",
"Alchemy",
"Alfalfa",
"Algae",
"Aliens",
"Alkaline",
"Almanac",
"Alongside",
"Alphabet",
"Already",
"Also",
"Altitude",
"Aluminum",
"Always",
"Amazingly",
"Ambulance",
"Amendment",
"Amiable",
"Ammunition",
"Amnesty",
"Amoeba",
"Amplifier",
"Amuser",
"Anagram",
"Anchor",
"Android",
"Anesthesia",
"Angelfish",
"Animal",
"Anklet",
"Announcer",
"Anonymous",
"Answer",
"Antelope",
"Anxiety",
"Anyplace",
"Aorta",
"Apartment",
"Apnea",
"Apostrophe",
"Apple",
"Apricot",
"Aquamarine",
"Arachnid",
"Arbitrate",
"Ardently",
"Arena",
"Argument",
"Aristocrat",
"Armchair",
"Aromatic",
"Arrowhead",
"Arsonist",
"Artichoke",
"Asbestos",
"Ascend",
"Aseptic",
"Ashamed",
"Asinine",
"Asleep",
"Asocial",
"Asparagus",
"Astronaut",
"Asymmetric",
"Atlas",
"Atmosphere",
"Atom",
"Atrocious",
"Attic",
"Atypical",
"Auctioneer",
"Auditorium",
"Augmented",
"Auspicious",
"Automobile",
"Auxiliary",
"Avalanche",
"Avenue",
"Aviator",
"Avocado",
"Awareness",
"Awhile",
"Awkward",
"Awning",
"Awoke",
"Axially",
"Azalea",
"Babbling",
"Backpack",
"Badass",
"Bagpipe",
"Bakery",
"Balancing",
"Bamboo",
"Banana",
"Barracuda",
"Basket",
"Bathrobe",
"Bazooka",
"Blade",
"Blender",
"Blimp",
"Blouse",
"Blurred",
"Boatyard",
"Bobcat",
"Body",
"Bogusness",
"Bohemian",
"Boiler",
"Bonnet",
"Boots",
"Borough",
"Bossiness",
"Bottle",
"Bouquet",
"Boxlike",
"Breath",
"Briefcase",
"Broom",
"Brushes",
"Bubblegum",
"Buckle",
"Buddhist",
"Buffalo",
"Bullfrog",
"Bunny",
"Busboy",
"Buzzard",
"Cabin",
"Cactus",
"Cadillac",
"Cafeteria",
"Cage",
"Cahoots",
"Cajoling",
"Cakewalk",
"Calculator",
"Camera",
"Canister",
"Capsule",
"Carrot",
"Cashew",
"Cathedral",
"Caucasian",
"Caviar",
"Ceasefire",
"Cedar",
"Celery",
"Cement",
"Census",
"Ceramics",
"Cesspool",
"Chalkboard",
"Cheesecake",
"Chimney",
"Chlorine",
"Chopsticks",
"Chrome",
"Chute",
"Cilantro",
"Cinnamon",
"Circle",
"Cityscape",
"Civilian",
"Clay",
"Clergyman",
"Clipboard",
"Clock",
"Clubhouse",
"Coathanger",
"Cobweb",
"Coconut",
"Codeword",
"Coexistent",
"Coffeecake",
"Cognitive",
"Cohabitate",
"Collarbone",
"Computer",
"Confetti",
"Copier",
"Cornea",
"Cosmetics",
"Cotton",
"Couch",
"Coverless",
"Coyote",
"Coziness",
"Crawfish",
"Crewmember",
"Crib",
"Croissant",
"Crumble",
"Crystal",
"Cubical",
"Cucumber",
"Cuddly",
"Cufflink",
"Cuisine",
"Culprit",
"Cup",
"Curry",
"Cushion",
"Cuticle",
"Cybernetic",
"Cyclist",
"Cylinder",
"Cymbal",
"Cynicism",
"Cypress",
"Cytoplasm",
"Dachshund",
"Daffodil",
"Dagger",
"Dairy",
"Dalmatian",
"Dandelion",
"Dartboard",
"Dastardly",
"Datebook",
"Daughter",
"Dawn",
"Daytime",
"Dazzler",
"Dealer",
"Debris",
"Decal",
"Dedicate",
"Deepness",
"Defrost",
"Degree",
"Dehydrator",
"Deliverer",
"Democrat",
"Dentist",
"Deodorant",
"Depot",
"Deranged",
"Desktop",
"Detergent",
"Device",
"Dexterity",
"Diamond",
"Dibs",
"Dictionary",
"Diffuser",
"Digit",
"Dilated",
"Dimple",
"Dinnerware",
"Dioxide",
"Diploma",
"Directory",
"Dishcloth",
"Ditto",
"Dividers",
"Dizziness",
"Doctor",
"Dodge",
"Doll",
"Dominoes",
"Donut",
"Doorstep",
"Dorsal",
"Double",
"Downstairs",
"Dozed",
"Drainpipe",
"Dresser",
"Driftwood",
"Droppings",
"Drum",
"Dryer",
"Dubiously",
"Duckling",
"Duffel",
"Dugout",
"Dumpster",
"Duplex",
"Durable",
"Dustpan",
"Dutiful",
"Duvet",
"Dwarfism",
"Dwelling",
"Dwindling",
"Dynamite",
"Dyslexia",
"Eagerness",
"Earlobe",
"Easel",
"Eavesdrop",
"Ebook",
"Eccentric",
"Echoless",
"Eclipse",
"Ecosystem",
"Ecstasy",
"Edged",
"Editor",
"Educator",
"Eelworm",
"Eerie",
"Effects",
"Eggnog",
"Egomaniac",
"Ejection",
"Elastic",
"Elbow",
"Elderly",
"Elephant",
"Elfishly",
"Eliminator",
"Elk",
"Elliptical",
"Elongated",
"Elsewhere",
"Elusive",
"Elves",
"Emancipate",
"Embroidery",
"Emcee",
"Emerald",
"Emission",
"Emoticon",
"Emperor",
"Emulate",
"Enactment",
"Enchilada",
"Endorphin",
"Energy",
"Enforcer",
"Engine",
"Enhance",
"Enigmatic",
"Enjoyably",
"Enlarged",
"Enormous",
"Enquirer",
"Enrollment",
"Ensemble",
"Entryway",
"Enunciate",
"Envoy",
"Enzyme",
"Epidemic",
"Equipment",
"Erasable",
"Ergonomic",
"Erratic",
"Eruption",
"Escalator",
"Eskimo",
"Esophagus",
"Espresso",
"Essay",
"Estrogen",
"Etching",
"Eternal",
"Ethics",
"Etiquette",
"Eucalyptus",
"Eulogy",
"Euphemism",
"Euthanize",
"Evacuation",
"Evergreen",
"Evidence",
"Evolution",
"Exam",
"Excerpt",
"Exerciser",
"Exfoliate",
"Exhale",
"Exist",
"Exorcist",
"Explode",
"Exquisite",
"Exterior",
"Exuberant",
"Fabric",
"Factory",
"Faded",
"Failsafe",
"Falcon",
"Family",
"Fanfare",
"Fasten",
"Faucet",
"Favorite",
"Feasibly",
"February",
"Federal",
"Feedback",
"Feigned",
"Feline",
"Femur",
"Fence",
"Ferret",
"Festival",
"Fettuccine",
"Feudalist",
"Feverish",
"Fiberglass",
"Fictitious",
"Fiddle",
"Figurine",
"Fillet",
"Finalist",
"Fiscally",
"Fixture",
"Flashlight",
"Fleshiness",
"Flight",
"Florist",
"Flypaper",
"Foamless",
"Focus",
"Foggy",
"Folksong",
"Fondue",
"Footpath",
"Fossil",
"Fountain",
"Fox",
"Fragment",
"Freeway",
"Fridge",
"Frosting",
"Fruit",
"Fryingpan",
"Gadget",
"Gainfully",
"Gallstone",
"Gamekeeper",
"Gangway",
"Garlic",
"Gaslight",
"Gathering",
"Gauntlet",
"Gearbox",
"Gecko",
"Gem",
"Generator",
"Geographer",
"Gerbil",
"Gesture",
"Getaway",
"Geyser",
"Ghoulishly",
"Gibberish",
"Giddiness",
"Giftshop",
"Gigabyte",
"Gimmick",
"Giraffe",
"Giveaway",
"Gizmo",
"Glasses",
"Gleeful",
"Glisten",
"Glove",
"Glucose",
"Glycerin",
"Gnarly",
"Gnomish",
"Goatskin",
"Goggles",
"Goldfish",
"Gong",
"Gooey",
"Gorgeous",
"Gosling",
"Gothic",
"Gourmet",
"Governor",
"Grape",
"Greyhound",
"Grill",
"Groundhog",
"Grumbling",
"Guacamole",
"Guerrilla",
"Guitar",
"Gullible",
"Gumdrop",
"Gurgling",
"Gusto",
"Gutless",
"Gymnast",
"Gynecology",
"Gyration",
"Habitat",
"Hacking",
"Haggard",
"Haiku",
"Halogen",
"Hamburger",
"Handgun",
"Happiness",
"Hardhat",
"Hastily",
"Hatchling",
"Haughty",
"Hazelnut",
"Headband",
"Hedgehog",
"Hefty",
"Heinously",
"Helmet",
"Hemoglobin",
"Henceforth",
"Herbs",
"Hesitation",
"Hexagon",
"Hubcap",
"Huddling",
"Huff",
"Hugeness",
"Hullabaloo",
"Human",
"Hunter",
"Hurricane",
"Hushing",
"Hyacinth",
"Hybrid",
"Hydrant",
"Hygienist",
"Hypnotist",
"Ibuprofen",
"Icepack",
"Icing",
"Iconic",
"Identical",
"Idiocy",
"Idly",
"Igloo",
"Ignition",
"Iguana",
"Illuminate",
"Imaging",
"Imbecile",
"Imitator",
"Immigrant",
"Imprint",
"Iodine",
"Ionosphere",
"Ipad",
"Iphone",
"Iridescent",
"Irksome",
"Iron",
"Irrigation",
"Island",
"Isotope",
"Issueless",
"Italicize",
"Itemizer",
"Itinerary",
"Itunes",
"Ivory",
"Jabbering",
"Jackrabbit",
"Jaguar",
"Jailhouse",
"Jalapeno",
"Jamboree",
"Janitor",
"Jarring",
"Jasmine",
"Jaundice",
"Jawbreaker",
"Jaywalker",
"Jazz",
"Jealous",
"Jeep",
"Jelly",
"Jeopardize",
"Jersey",
"Jetski",
"Jezebel",
"Jiffy",
"Jigsaw",
"Jingling",
"Jobholder",
"Jockstrap",
"Jogging",
"John",
"Joinable",
"Jokingly",
"Journal",
"Jovial",
"Joystick",
"Jubilant",
"Judiciary",
"Juggle",
"Juice",
"Jujitsu",
"Jukebox",
"Jumpiness",
"Junkyard",
"Juror",
"Justifying",
"Juvenile",
"Kabob",
"Kamikaze",
"Kangaroo",
"Karate",
"Kayak",
"Keepsake",
"Kennel",
"Kerosene",
"Ketchup",
"Khaki",
"Kickstand",
"Kilogram",
"Kimono",
"Kingdom",
"Kiosk",
"Kissing",
"Kite",
"Kleenex",
"Knapsack",
"Kneecap",
"Knickers",
"Koala",
"Krypton",
"Laboratory",
"Ladder",
"Lakefront",
"Lantern",
"Laptop",
"Laryngitis",
"Lasagna",
"Latch",
"Laundry",
"Lavender",
"Laxative",
"Lazybones",
"Lecturer",
"Leftover",
"Leggings",
"Leisure",
"Lemon",
"Length",
"Leopard",
"Leprechaun",
"Lettuce",
"Leukemia",
"Levers",
"Lewdness",
"Liability",
"Library",
"Licorice",
"Lifeboat",
"Lightbulb",
"Likewise",
"Lilac",
"Limousine",
"Lint",
"Lioness",
"Lipstick",
"Liquid",
"Listless",
"Litter",
"Liverwurst",
"Lizard",
"Llama",
"Luau",
"Lubricant",
"Lucidity",
"Ludicrous",
"Luggage",
"Lukewarm",
"Lullaby",
"Lumberjack",
"Lunchbox",
"Luridness",
"Luscious",
"Luxurious",
"Lyrics",
"Macaroni",
"Maestro",
"Magazine",
"Mahogany",
"Maimed",
"Majority",
"Makeover",
"Malformed",
"Mammal",
"Mango",
"Mapmaker",
"Marbles",
"Massager",
"Matchstick",
"Maverick",
"Maximum",
"Mayonnaise",
"Moaning",
"Mobilize",
"Moccasin",
"Modify",
"Moisture",
"Molecule",
"Momentum",
"Monastery",
"Moonshine",
"Mortuary",
"Mosquito",
"Motorcycle",
"Mousetrap",
"Movie",
"Mower",
"Mozzarella",
"Muckiness",
"Mudflow",
"Mugshot",
"Mule",
"Mummy",
"Mundane",
"Muppet",
"Mural",
"Mustard",
"Mutation",
"Myriad",
"Myspace",
"Myth",
"Nail",
"Namesake",
"Nanosecond",
"Napkin",
"Narrator",
"Nastiness",
"Natives",
"Nautically",
"Navigate",
"Nearest",
"Nebula",
"Nectar",
"Nefarious",
"Negotiator",
"Neither",
"Nemesis",
"Neoliberal",
"Nephew",
"Nervously",
"Nest",
"Netting",
"Neuron",
"Nevermore",
"Nextdoor",
"Nicotine",
"Niece",
"Nimbleness",
"Nintendo",
"Nirvana",
"Nuclear",
"Nugget",
"Nuisance",
"Nullify",
"Numbing",
"Nuptials",
"Nursery",
"Nutcracker",
"Nylon",
"Oasis",
"Oat",
"Obediently",
"Obituary",
"Object",
"Obliterate",
"Obnoxious",
"Observer",
"Obtain",
"Obvious",
"Occupation",
"Oceanic",
"Octopus",
"Ocular",
"Office",
"Oftentimes",
"Oiliness",
"Ointment",
"Older",
"Olympics",
"Omissible",
"Omnivorous",
"Oncoming",
"Onion",
"Onlooker",
"Onstage",
"Onward",
"Onyx",
"Oomph",
"Opaquely",
"Opera",
"Opium",
"Opossum",
"Opponent",
"Optical",
"Opulently",
"Oscillator",
"Osmosis",
"Ostrich",
"Otherwise",
"Ought",
"Outhouse",
"Ovation",
"Oven",
"Owlish",
"Oxford",
"Oxidize",
"Oxygen",
"Oyster",
"Ozone",
"Pacemaker",
"Padlock",
"Pageant",
"Pajamas",
"Palm",
"Pamphlet",
"Pantyhose",
"Paprika",
"Parakeet",
"Passport",
"Patio",
"Pauper",
"Pavement",
"Payphone",
"Pebble",
"Peculiarly",
"Pedometer",
"Pegboard",
"Pelican",
"Penguin",
"Peony",
"Pepperoni",