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assets_js_lib_crypto_utils.js
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// ** Core Helpers: **
//uint_8array
//buffer
//unbuffer
//buf2hex
//is_hex
//str_pad
//dec_to_hex
//hex_to_dec
//hex_to_number_string
//hex_to_int
//pad_binary
// ** SJCL Bitwise Operations: **
//to_bits
//hex_to_bits
//from_bits
//bit_length
//concat_array
// ** Base Conversion: **
//binary_string_to_word_array
//byte_array_to_word_array
//byte_array_to_binary_string
//hex_string_to_binary_string
// ** Base58: **
//b58enc
//b58enc_uint_array
//b58dec
//b58dec_uint_array
//b58check_encode
//b58check_decode
// ** Bech32: **
//to_words
//from_words
//convert
//polymod
//hrp_expand
//verify_checksum
//create_checksum
//bech32_encode
//bech32_decode
//verify_checksum_with_type
//bech32_dec_array
//pub_to_address_bech32
// ** Secp256k1: **
//mod
//weierstrass
//egcd
//invert
//hex_to_bytes
//bytes_to_hex
//hex_to_number
//bytes_to_number
//pad64
//JacobianPoint
//Point
//sqrt_mod
//pow_mod
//normalize_privatekey
//get_publickey
// ** Hash Functions: **
//hmac_bits
//hmacsha
//hmacsha_bits
//hash160
//sha_sub
// ** Key & Address Generation: **
//privkey_wif
//priv_to_pub
//expand_pub
//pub_to_address
//pub_to_eth_address
//hash160_to_address
//to_checksum_address
// ** Bitcoin Cash Specific: **
//pub_to_cashaddr
//bch_legacy
//bch_cashaddr
// ** LNURL & Lightning: **
//lnurl_decodeb32
// ** Mnemonic Functions: **
//clean_string
//join_words
//split_words
//normalize_string
//mnemonic_to_binary_string
// ** Encryption: **
//aes_enc
//aes_dec
// ** Miscellaneous: **
//nimiq_hash
// ** Scripthash: **
//address_to_scripthash
//convert5to8
"use strict";
const crypto = window.crypto,
b58ab = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz",
b32ab = "qpzry9x8gf2tvdw0s3jn54khce6mua7l",
generator = [0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3],
bytestring = "0000000000000000000000000000000000000000000000000000000000000000",
oc = 115792089237316195423570985008687907852837564279074904382605163141518161494337n,
wordlist = ["abandon", "ability", "able", "about", "above", "absent", "absorb", "abstract", "absurd", "abuse", "access", "accident", "account", "accuse", "achieve", "acid", "acoustic", "acquire", "across", "act", "action", "actor", "actress", "actual", "adapt", "add", "addict", "address", "adjust", "admit", "adult", "advance", "advice", "aerobic", "affair", "afford", "afraid", "again", "age", "agent", "agree", "ahead", "aim", "air", "airport", "aisle", "alarm", "album", "alcohol", "alert", "alien", "all", "alley", "allow", "almost", "alone", "alpha", "already", "also", "alter", "always", "amateur", "amazing", "among", "amount", "amused", "analyst", "anchor", "ancient", "anger", "angle", "angry", "animal", "ankle", "announce", "annual", "another", "answer", "antenna", "antique", "anxiety", "any", "apart", "apology", "appear", "apple", "approve", "april", "arch", "arctic", "area", "arena", "argue", "arm", "armed", "armor", "army", "around", "arrange", "arrest", "arrive", "arrow", "art", "artefact", "artist", "artwork", "ask", "aspect", "assault", "asset", "assist", "assume", "asthma", "athlete", "atom", "attack", "attend", "attitude", "attract", "auction", "audit", "august", "aunt", "author", "auto", "autumn", "average", "avocado", "avoid", "awake", "aware", "away", "awesome", "awful", "awkward", "axis", "baby", "bachelor", "bacon", "badge", "bag", "balance", "balcony", "ball", "bamboo", "banana", "banner", "bar", "barely", "bargain", "barrel", "base", "basic", "basket", "battle", "beach", "bean", "beauty", "because", "become", "beef", "before", "begin", "behave", "behind", "believe", "below", "belt", "bench", "benefit", "best", "betray", "better", "between", "beyond", "bicycle", "bid", "bike", "bind", "biology", "bird", "birth", "bitter", "black", "blade", "blame", "blanket", "blast", "bleak", "bless", "blind", "blood", "blossom", "blouse", "blue", "blur", "blush", "board", "boat", "body", "boil", "bomb", "bone", "bonus", "book", "boost", "border", "boring", "borrow", "boss", "bottom", "bounce", "box", "boy", "bracket", "brain", "brand", "brass", "brave", "bread", "breeze", "brick", "bridge", "brief", "bright", "bring", "brisk", "broccoli", "broken", "bronze", "broom", "brother", "brown", "brush", "bubble", "buddy", "budget", "buffalo", "build", "bulb", "bulk", "bullet", "bundle", "bunker", "burden", "burger", "burst", "bus", "business", "busy", "butter", "buyer", "buzz", "cabbage", "cabin", "cable", "cactus", "cage", "cake", "call", "calm", "camera", "camp", "can", "canal", "cancel", "candy", "cannon", "canoe", "canvas", "canyon", "capable", "capital", "captain", "car", "carbon", "card", "cargo", "carpet", "carry", "cart", "case", "cash", "casino", "castle", "casual", "cat", "catalog", "catch", "category", "cattle", "caught", "cause", "caution", "cave", "ceiling", "celery", "cement", "census", "century", "cereal", "certain", "chair", "chalk", "champion", "change", "chaos", "chapter", "charge", "chase", "chat", "cheap", "check", "cheese", "chef", "cherry", "chest", "chicken", "chief", "child", "chimney", "choice", "choose", "chronic", "chuckle", "chunk", "churn", "cigar", "cinnamon", "circle", "citizen", "city", "civil", "claim", "clap", "clarify", "claw", "clay", "clean", "clerk", "clever", "click", "client", "cliff", "climb", "clinic", "clip", "clock", "clog", "close", "cloth", "cloud", "clown", "club", "clump", "cluster", "clutch", "coach", "coast", "coconut", "code", "coffee", "coil", "coin", "collect", "color", "column", "combine", "come", "comfort", "comic", "common", "company", "concert", "conduct", "confirm", "congress", "connect", "consider", "control", "convince", "cook", "cool", "copper", "copy", "coral", "core", "corn", "correct", "cost", "cotton", "couch", "country", "couple", "course", "cousin", "cover", "coyote", "crack", "cradle", "craft", "cram", "crane", "crash", "crater", "crawl", "crazy", "cream", "credit", "creek", "crew", "cricket", "crime", "crisp", "critic", "crop", "cross", "crouch", "crowd", "crucial", "cruel", "cruise", "crumble", "crunch", "crush", "cry", "crystal", "cube", "culture", "cup", "cupboard", "curious", "current", "curtain", "curve", "cushion", "custom", "cute", "cycle", "dad", "damage", "damp", "dance", "danger", "daring", "dash", "daughter", "dawn", "day", "deal", "debate", "debris", "decade", "december", "decide", "decline", "decorate", "decrease", "deer", "defense", "define", "defy", "degree", "delay", "deliver", "demand", "demise", "denial", "dentist", "deny", "depart", "depend", "deposit", "depth", "deputy", "derive", "describe", "desert", "design", "desk", "despair", "destroy", "detail", "detect", "develop", "device", "devote", "diagram", "dial", "diamond", "diary", "dice", "diesel", "diet", "differ", "digital", "dignity", "dilemma", "dinner", "dinosaur", "direct", "dirt", "disagree", "discover", "disease", "dish", "dismiss", "disorder", "display", "distance", "divert", "divide", "divorce", "dizzy", "doctor", "document", "dog", "doll", "dolphin", "domain", "donate", "donkey", "donor", "door", "dose", "double", "dove", "draft", "dragon", "drama", "drastic", "draw", "dream", "dress", "drift", "drill", "drink", "drip", "drive", "drop", "drum", "dry", "duck", "dumb", "dune", "during", "dust", "dutch", "duty", "dwarf", "dynamic", "eager", "eagle", "early", "earn", "earth", "easily", "east", "easy", "echo", "ecology", "economy", "edge", "edit", "educate", "effort", "egg", "eight", "either", "elbow", "elder", "electric", "elegant", "element", "elephant", "elevator", "elite", "else", "embark", "embody", "embrace", "emerge", "emotion", "employ", "empower", "empty", "enable", "enact", "end", "endless", "endorse", "enemy", "energy", "enforce", "engage", "engine", "enhance", "enjoy", "enlist", "enough", "enrich", "enroll", "ensure", "enter", "entire", "entry", "envelope", "episode", "equal", "equip", "era", "erase", "erode", "erosion", "error", "erupt", "escape", "essay", "essence", "estate", "eternal", "ethics", "evidence", "evil", "evoke", "evolve", "exact", "example", "excess", "exchange", "excite", "exclude", "excuse", "execute", "exercise", "exhaust", "exhibit", "exile", "exist", "exit", "exotic", "expand", "expect", "expire", "explain", "expose", "express", "extend", "extra", "eye", "eyebrow", "fabric", "face", "faculty", "fade", "faint", "faith", "fall", "false", "fame", "family", "famous", "fan", "fancy", "fantasy", "farm", "fashion", "fat", "fatal", "father", "fatigue", "fault", "favorite", "feature", "february", "federal", "fee", "feed", "feel", "female", "fence", "festival", "fetch", "fever", "few", "fiber", "fiction", "field", "figure", "file", "film", "filter", "final", "find", "fine", "finger", "finish", "fire", "firm", "first", "fiscal", "fish", "fit", "fitness", "fix", "flag", "flame", "flash", "flat", "flavor", "flee", "flight", "flip", "float", "flock", "floor", "flower", "fluid", "flush", "fly", "foam", "focus", "fog", "foil", "fold", "follow", "food", "foot", "force", "forest", "forget", "fork", "fortune", "forum", "forward", "fossil", "foster", "found", "fox", "fragile", "frame", "frequent", "fresh", "friend", "fringe", "frog", "front", "frost", "frown", "frozen", "fruit", "fuel", "fun", "funny", "furnace", "fury", "future", "gadget", "gain", "galaxy", "gallery", "game", "gap", "garage", "garbage", "garden", "garlic", "garment", "gas", "gasp", "gate", "gather", "gauge", "gaze", "general", "genius", "genre", "gentle", "genuine", "gesture", "ghost", "giant", "gift", "giggle", "ginger", "giraffe", "girl", "give", "glad", "glance", "glare", "glass", "glide", "glimpse", "globe", "gloom", "glory", "glove", "glow", "glue", "goat", "goddess", "gold", "good", "goose", "gorilla", "gospel", "gossip", "govern", "gown", "grab", "grace", "grain", "grant", "grape", "grass", "gravity", "great", "green", "grid", "grief", "grit", "grocery", "group", "grow", "grunt", "guard", "guess", "guide", "guilt", "guitar", "gun", "gym", "habit", "hair", "half", "hammer", "hamster", "hand", "happy", "harbor", "hard", "harsh", "harvest", "hat", "have", "hawk", "hazard", "head", "health", "heart", "heavy", "hedgehog", "height", "hello", "helmet", "help", "hen", "hero", "hidden", "high", "hill", "hint", "hip", "hire", "history", "hobby", "hockey", "hold", "hole", "holiday", "hollow", "home", "honey", "hood", "hope", "horn", "horror", "horse", "hospital", "host", "hotel", "hour", "hover", "hub", "huge", "human", "humble", "humor", "hundred", "hungry", "hunt", "hurdle", "hurry", "hurt", "husband", "hybrid", "ice", "icon", "idea", "identify", "idle", "ignore", "ill", "illegal", "illness", "image", "imitate", "immense", "immune", "impact", "impose", "improve", "impulse", "inch", "include", "income", "increase", "index", "indicate", "indoor", "industry", "infant", "inflict", "inform", "inhale", "inherit", "initial", "inject", "injury", "inmate", "inner", "innocent", "input", "inquiry", "insane", "insect", "inside", "inspire", "install", "intact", "interest", "into", "invest", "invite", "involve", "iron", "island", "isolate", "issue", "item", "ivory", "jacket", "jaguar", "jar", "jazz", "jealous", "jeans", "jelly", "jewel", "job", "join", "joke", "journey", "joy", "judge", "juice", "jump", "jungle", "junior", "junk", "just", "kangaroo", "keen", "keep", "ketchup", "key", "kick", "kid", "kidney", "kind", "kingdom", "kiss", "kit", "kitchen", "kite", "kitten", "kiwi", "knee", "knife", "knock", "know", "lab", "label", "labor", "ladder", "lady", "lake", "lamp", "language", "laptop", "large", "later", "latin", "laugh", "laundry", "lava", "law", "lawn", "lawsuit", "layer", "lazy", "leader", "leaf", "learn", "leave", "lecture", "left", "leg", "legal", "legend", "leisure", "lemon", "lend", "length", "lens", "leopard", "lesson", "letter", "level", "liar", "liberty", "library", "license", "life", "lift", "light", "like", "limb", "limit", "link", "lion", "liquid", "list", "little", "live", "lizard", "load", "loan", "lobster", "local", "lock", "logic", "lonely", "long", "loop", "lottery", "loud", "lounge", "love", "loyal", "lucky", "luggage", "lumber", "lunar", "lunch", "luxury", "lyrics", "machine", "mad", "magic", "magnet", "maid", "mail", "main", "major", "make", "mammal", "man", "manage", "mandate", "mango", "mansion", "manual", "maple", "marble", "march", "margin", "marine", "market", "marriage", "mask", "mass", "master", "match", "material", "math", "matrix", "matter", "maximum", "maze", "meadow", "mean", "measure", "meat", "mechanic", "medal", "media", "melody", "melt", "member", "memory", "mention", "menu", "mercy", "merge", "merit", "merry", "mesh", "message", "metal", "method", "middle", "midnight", "milk", "million", "mimic", "mind", "minimum", "minor", "minute", "miracle", "mirror", "misery", "miss", "mistake", "mix", "mixed", "mixture", "mobile", "model", "modify", "mom", "moment", "monitor", "monkey", "monster", "month", "moon", "moral", "more", "morning", "mosquito", "mother", "motion", "motor", "mountain", "mouse", "move", "movie", "much", "muffin", "mule", "multiply", "muscle", "museum", "mushroom", "music", "must", "mutual", "myself", "mystery", "myth", "naive", "name", "napkin", "narrow", "nasty", "nation", "nature", "near", "neck", "need", "negative", "neglect", "neither", "nephew", "nerve", "nest", "net", "network", "neutral", "never", "news", "next", "nice", "night", "noble", "noise", "nominee", "noodle", "normal", "north", "nose", "notable", "note", "nothing", "notice", "novel", "now", "nuclear", "number", "nurse", "nut", "oak", "obey", "object", "oblige", "obscure", "observe", "obtain", "obvious", "occur", "ocean", "october", "odor", "off", "offer", "office", "often", "oil", "okay", "old", "olive", "olympic", "omit", "once", "one", "onion", "online", "only", "open", "opera", "opinion", "oppose", "option", "orange", "orbit", "orchard", "order", "ordinary", "organ", "orient", "original", "orphan", "ostrich", "other", "outdoor", "outer", "output", "outside", "oval", "oven", "over", "own", "owner", "oxygen", "oyster", "ozone", "pact", "paddle", "page", "pair", "palace", "palm", "panda", "panel", "panic", "panther", "paper", "parade", "parent", "park", "parrot", "party", "pass", "patch", "path", "patient", "patrol", "pattern", "pause", "pave", "payment", "peace", "peanut", "pear", "peasant", "pelican", "pen", "penalty", "pencil", "people", "pepper", "perfect", "permit", "person", "pet", "phone", "photo", "phrase", "physical", "piano", "picnic", "picture", "piece", "pig", "pigeon", "pill", "pilot", "pink", "pioneer", "pipe", "pistol", "pitch", "pizza", "place", "planet", "plastic", "plate", "play", "please", "pledge", "pluck", "plug", "plunge", "poem", "poet", "point", "polar", "pole", "police", "pond", "pony", "pool", "popular", "portion", "position", "possible", "post", "potato", "pottery", "poverty", "powder", "power", "practice", "praise", "predict", "prefer", "prepare", "present", "pretty", "prevent", "price", "pride", "primary", "print", "priority", "prison", "private", "prize", "problem", "process", "produce", "profit", "program", "project", "promote", "proof", "property", "prosper", "protect", "proud", "provide", "public", "pudding", "pull", "pulp", "pulse", "pumpkin", "punch", "pupil", "puppy", "purchase", "purity", "purpose", "purse", "push", "put", "puzzle", "pyramid", "quality", "quantum", "quarter", "question", "quick", "quit", "quiz", "quote", "rabbit", "raccoon", "race", "rack", "radar", "radio", "rail", "rain", "raise", "rally", "ramp", "ranch", "random", "range", "rapid", "rare", "rate", "rather", "raven", "raw", "razor", "ready", "real", "reason", "rebel", "rebuild", "recall", "receive", "recipe", "record", "recycle", "reduce", "reflect", "reform", "refuse", "region", "regret", "regular", "reject", "relax", "release", "relief", "rely", "remain", "remember", "remind", "remove", "render", "renew", "rent", "reopen", "repair", "repeat", "replace", "report", "require", "rescue", "resemble", "resist", "resource", "response", "result", "retire", "retreat", "return", "reunion", "reveal", "review", "reward", "rhythm", "rib", "ribbon", "rice", "rich", "ride", "ridge", "rifle", "right", "rigid", "ring", "riot", "ripple", "risk", "ritual", "rival", "river", "road", "roast", "robot", "robust", "rocket", "romance", "roof", "rookie", "room", "rose", "rotate", "rough", "round", "route", "royal", "rubber", "rude", "rug", "rule", "run", "runway", "rural", "sad", "saddle", "sadness", "safe", "sail", "salad", "salmon", "salon", "salt", "salute", "same", "sample", "sand", "satisfy", "satoshi", "sauce", "sausage", "save", "say", "scale", "scan", "scare", "scatter", "scene", "scheme", "school", "science", "scissors", "scorpion", "scout", "scrap", "screen", "script", "scrub", "sea", "search", "season", "seat", "second", "secret", "section", "security", "seed", "seek", "segment", "select", "sell", "seminar", "senior", "sense", "sentence", "series", "service", "session", "settle", "setup", "seven", "shadow", "shaft", "shallow", "share", "shed", "shell", "sheriff", "shield", "shift", "shine", "ship", "shiver", "shock", "shoe", "shoot", "shop", "short", "shoulder", "shove", "shrimp", "shrug", "shuffle", "shy", "sibling", "sick", "side", "siege", "sight", "sign", "silent", "silk", "silly", "silver", "similar", "simple", "since", "sing", "siren", "sister", "situate", "six", "size", "skate", "sketch", "ski", "skill", "skin", "skirt", "skull", "slab", "slam", "sleep", "slender", "slice", "slide", "slight", "slim", "slogan", "slot", "slow", "slush", "small", "smart", "smile", "smoke", "smooth", "snack", "snake", "snap", "sniff", "snow", "soap", "soccer", "social", "sock", "soda", "soft", "solar", "soldier", "solid", "solution", "solve", "someone", "song", "soon", "sorry", "sort", "soul", "sound", "soup", "source", "south", "space", "spare", "spatial", "spawn", "speak", "special", "speed", "spell", "spend", "sphere", "spice", "spider", "spike", "spin", "spirit", "split", "spoil", "sponsor", "spoon", "sport", "spot", "spray", "spread", "spring", "spy", "square", "squeeze", "squirrel", "stable", "stadium", "staff", "stage", "stairs", "stamp", "stand", "start", "state", "stay", "steak", "steel", "stem", "step", "stereo", "stick", "still", "sting", "stock", "stomach", "stone", "stool", "story", "stove", "strategy", "street", "strike", "strong", "struggle", "student", "stuff", "stumble", "style", "subject", "submit", "subway", "success", "such", "sudden", "suffer", "sugar", "suggest", "suit", "summer", "sun", "sunny", "sunset", "super", "supply", "supreme", "sure", "surface", "surge", "surprise", "surround", "survey", "suspect", "sustain", "swallow", "swamp", "swap", "swarm", "swear", "sweet", "swift", "swim", "swing", "switch", "sword", "symbol", "symptom", "syrup", "system", "table", "tackle", "tag", "tail", "talent", "talk", "tank", "tape", "target", "task", "taste", "tattoo", "taxi", "teach", "team", "tell", "ten", "tenant", "tennis", "tent", "term", "test", "text", "thank", "that", "theme", "then", "theory", "there", "they", "thing", "this", "thought", "three", "thrive", "throw", "thumb", "thunder", "ticket", "tide", "tiger", "tilt", "timber", "time", "tiny", "tip", "tired", "tissue", "title", "toast", "tobacco", "today", "toddler", "toe", "together", "toilet", "token", "tomato", "tomorrow", "tone", "tongue", "tonight", "tool", "tooth", "top", "topic", "topple", "torch", "tornado", "tortoise", "toss", "total", "tourist", "toward", "tower", "town", "toy", "track", "trade", "traffic", "tragic", "train", "transfer", "trap", "trash", "travel", "tray", "treat", "tree", "trend", "trial", "tribe", "trick", "trigger", "trim", "trip", "trophy", "trouble", "truck", "true", "truly", "trumpet", "trust", "truth", "try", "tube", "tuition", "tumble", "tuna", "tunnel", "turkey", "turn", "turtle", "twelve", "twenty", "twice", "twin", "twist", "two", "type", "typical", "ugly", "umbrella", "unable", "unaware", "uncle", "uncover", "under", "undo", "unfair", "unfold", "unhappy", "uniform", "unique", "unit", "universe", "unknown", "unlock", "until", "unusual", "unveil", "update", "upgrade", "uphold", "upon", "upper", "upset", "urban", "urge", "usage", "use", "used", "useful", "useless", "usual", "utility", "vacant", "vacuum", "vague", "valid", "valley", "valve", "van", "vanish", "vapor", "various", "vast", "vault", "vehicle", "velvet", "vendor", "venture", "venue", "verb", "verify", "version", "very", "vessel", "veteran", "viable", "vibrant", "vicious", "victory", "video", "view", "village", "vintage", "violin", "virtual", "virus", "visa", "visit", "visual", "vital", "vivid", "vocal", "voice", "void", "volcano", "volume", "vote", "voyage", "wage", "wagon", "wait", "walk", "wall", "walnut", "want", "warfare", "warm", "warrior", "wash", "wasp", "waste", "water", "wave", "way", "wealth", "weapon", "wear", "weasel", "weather", "web", "wedding", "weekend", "weird", "welcome", "west", "wet", "whale", "what", "wheat", "wheel", "when", "where", "whip", "whisper", "wide", "width", "wife", "wild", "will", "win", "window", "wine", "wing", "wink", "winner", "winter", "wire", "wisdom", "wise", "wish", "witness", "wolf", "woman", "wonder", "wood", "wool", "word", "work", "world", "worry", "worth", "wrap", "wreck", "wrestle", "wrist", "write", "wrong", "yard", "year", "yellow", "you", "young", "youth", "zebra", "zero", "zone", "zoo"],
utf8_encoder = new TextEncoder(),
utf8_decoder = new TextDecoder("utf-8", {
"fatal": true
}),
// Constants for bech32 and bech32m
BECH32_CONST = 1,
BECH32M_CONST = 0x2bc830a3;
// Minimal curve params for secp256k1
const secp = {},
CURVE = {
"a": 0n,
"b": 7n,
"P": (2n ** 256n) - (2n ** 32n) - 977n,
"n": (2n ** 256n) - 432420386565659656852420866394968145599n,
"Gx": 55066263022277343669578718895168534326250603453777594175500187360389116729240n,
"Gy": 32670510020758816978083085130507043184471273380659243275938904335757337482424n
};
secp.CURVE = CURVE;
// ** Core Helpers: **
// Creates a typed array with 8-bit unsigned integers from a byte array
function uint_8array(bytes) {
return new Uint8Array(bytes);
}
// Encodes string to UTF-8 using TextEncoder
function buffer(enc) {
return utf8_encoder.encode(enc);
}
// Decodes UTF-8 encoded data using TextDecoder
function unbuffer(enc, encoding) {
return utf8_decoder.decode(enc);
}
// Converts ArrayBuffer to zero-padded hexadecimal string
function buf2hex(buffer) { // buffer is an ArrayBuffer
return Array.prototype.map.call(uint_8array(buffer), x => ("00" + x.toString(16)).slice(-2)).join("");
}
// Validates string contains only hexadecimal characters [0-9a-fA-F]
function is_hex(str) {
return new RegExp("^[a-fA-F0-9]+$").test(str);
}
// Left-pads string with zeros to specified byte length with truncation
function str_pad(val, bytes) {
return (bytestring.slice(0, bytes) + val).substr(-bytes);
}
// Converts integer to base-16 string representation
function dec_to_hex(val) {
return val.toString(16);
}
// Parses hexadecimal string to BigInt with 0x prefix
function hex_to_dec(val) {
return BigInt("0x" + val);
}
// Converts a hexadecimal string to a decimal string
function hex_to_number_string(val) {
return hex_to_int(val).toString();
}
// Converts a hexadecimal string to a number
function hex_to_int(val) {
return parseInt(val, 16);
}
// Pads binary strings with leading zeros
function pad_binary(binary_str, target_length) {
let padded_str = binary_str.toString();
while (padded_str.length < target_length) {
padded_str = "0" + padded_str;
}
return padded_str;
}
// ** SJCL Bitwise Operations: **
// Converts UTF-8 string to SJCL bitArray format
function to_bits(val) {
return sjcl.codec.utf8String.toBits(val);
}
// Converts hexadecimal string to SJCL bitArray format
function hex_to_bits(val) {
return sjcl.codec.hex.toBits(val);
}
// Converts SJCL bitArray to hexadecimal string
function from_bits(val) {
return sjcl.codec.hex.fromBits(val);
}
// Calculates total bit length of SJCL bitArray
function bit_length(val) {
return sjcl.bitArray.bitLength(val);
}
// Merges two SJCL bitArrays into single concatenated array
function concat_array(arr1, arr2) {
return sjcl.bitArray.concat(arr1, arr2);
}
// ** Base Conversion: **
// Chunks 32-bit segments from binary string into decimal integer array
function binary_string_to_word_array(binary) {
let aLen = binary.length / 32,
a = [];
for (let i = 0; i < aLen; i++) {
let valueStr = binary.substring(0, 32),
value = parseInt(valueStr, 2);
a.push(value);
binary = binary.slice(32);
}
return a;
}
// Converts byte array to 32-bit word array using big-endian ordering
function byte_array_to_word_array(data) {
const a = [];
for (let i = 0; i < data.length / 4; i++) {
let v = 0;
v += data[i * 4 + 0] << 8 * 3;
v += data[i * 4 + 1] << 8 * 2;
v += data[i * 4 + 2] << 8 * 1;
v += data[i * 4 + 3] << 8 * 0;
a.push(v);
}
return a;
}
// Converts byte array to binary string with 8-bit zero-padded values
function byte_array_to_binary_string(data) {
let bin = "";
for (let i = 0; i < data.length; i++) {
bin += pad_binary(data[i].toString(2), 8);
}
return bin;
}
// Converts hex string to binary string with 4-bit zero-padded values
function hex_string_to_binary_string(hexString) {
let binaryString = "";
for (let i = 0; i < hexString.length; i++) {
binaryString += pad_binary(parseInt(hexString[i], 16).toString(2), 4);
}
return binaryString;
}
// ** Base58: **
// Encodes data to Base58 string from hex or UTF-8 input
function b58enc(enc, encode) {
const bytestring = (encode = "hex") ? hex_to_bytes(enc) : buffer(enc);
return b58enc_uint_array(bytestring);
}
// Converts Uint8Array to Base58 string using custom alphabet
function b58enc_uint_array(u) {
let d = [],
s = "",
i, j, c, n;
for (i in u) {
j = 0, c = u[i];
s += c || s.length ^ i ? "" : 1;
while (j in d || c) {
n = d[j];
n = n ? n * 256 + c : c;
c = n / 58 | 0;
d[j] = n % 58;
j++
}
}
while (j--) s += b58ab[d[j]];
return s;
}
// Decodes Base58 string to UTF-8 or hexadecimal output
function b58dec(dec, decode) {
const buffer = b58dec_uint_array(dec);
return (decode === "hex") ? buf2hex(buffer) : unbuffer(buffer, "utf-8");
}
// Converts Base58 string to Uint8Array using custom alphabet
function b58dec_uint_array(dec) {
let d = [],
b = [],
i, j, c, n;
for (i in dec) {
j = 0, c = b58ab.indexOf(dec[i]);
if (c < 0) return undefined;
c || b.length ^ i ? i : b.push(0);
while (j in d || c) {
n = d[j];
n = n ? n * 58 + c : c;
c = n >> 8;
d[j] = n % 256;
j++
}
}
while (j--) b.push(d[j]);
return uint_8array(b);
}
// base58check
// Implements Base58Check encoding with double SHA256 checksum
function b58check_encode(payload) {
const full_bytes = payload + hmacsha(hmacsha(payload, "sha256", "hex"), "sha256", "hex").slice(0, 8);
return b58enc(full_bytes, "hex");
}
// Decodes Base58Check string and removes 4-byte checksum
function b58check_decode(val) {
const full_bytes = b58dec(val, "hex"),
bytes = full_bytes.substring(0, full_bytes.length - 8);
return bytes;
}
// ** Bech32: **
// Converts input byte array to 5-bit word representation for bech32 encoding
function to_words(bytes) {
const res = convert(bytes, 8, 5, true);
if (Array.isArray(res)) {
return res
}
throw new Error(res)
}
// Converts 5-bit word array back to byte representation for bech32 decoding
function from_words(bytes) {
const res = convert(bytes, 5, 8, true);
if (Array.isArray(res)) {
return res
}
throw new Error(res)
}
// Transforms data between different bit-length representations with optional padding
function convert(data, inBits, outBits, pad) {
let value = 0,
bits = 0,
maxV = (1 << outBits) - 1,
result = [];
for (let i = 0; i < data.length; ++i) {
value = (value << inBits) | data[i];
bits += inBits;
while (bits >= outBits) {
bits -= outBits;
result.push((value >> bits) & maxV);
}
}
if (pad) {
if (bits > 0) {
result.push((value << (outBits - bits)) & maxV);
}
} else {
if (bits >= inBits) {
return "Excess padding"
}
if ((value << (outBits - bits)) & maxV) {
return "Non-zero padding"
}
}
return result
}
// Computes the Bech32 checksum
function polymod(values) {
let chk = 1;
for (let p = 0; p < values.length; ++p) {
let top = chk >> 25;
chk = (chk & 0x1ffffff) << 5 ^ values[p];
for (let i = 0; i < 5; ++i) {
if ((top >> i) & 1) {
chk ^= generator[i];
}
}
}
return chk;
}
// Expands the human-readable part for Bech32 encoding
function hrp_expand(hrp) {
const ret = [];
let p;
for (p = 0; p < hrp.length; ++p) {
ret.push(hrp.charCodeAt(p) >> 5);
}
ret.push(0);
for (p = 0; p < hrp.length; ++p) {
ret.push(hrp.charCodeAt(p) & 31);
}
return ret;
}
// Verifies the checksum in a Bech32 address
function verify_checksum(hrp, data) {
return polymod(hrp_expand(hrp).concat(data)) === 1;
}
// Creates a checksum for Bech32 encoding
function create_checksum(hrp, data) {
const values = hrp_expand(hrp).concat(data).concat([0, 0, 0, 0, 0, 0]),
mod = polymod(values) ^ 1,
ret = [];
for (let p = 0; p < 6; ++p) {
ret.push((mod >> 5 * (5 - p)) & 31);
}
return ret;
}
// Encodes data into a Bech32 address
function bech32_encode(hrp, data) {
let combined = data.concat(create_checksum(hrp, data)),
ret = hrp + "1";
for (let p = 0; p < combined.length; ++p) {
ret += b32ab.charAt(combined[p]);
}
return ret;
}
// Decodes a Bech32 encoded string
function bech32_decode(bechString) {
let p, has_lower = false,
has_upper = false;
// Check for mixed case and valid character range
for (p = 0; p < bechString.length; ++p) {
if (bechString.charCodeAt(p) < 33 || bechString.charCodeAt(p) > 126) {
return null;
}
if (bechString.charCodeAt(p) >= 97 && bechString.charCodeAt(p) <= 122) {
has_lower = true;
}
if (bechString.charCodeAt(p) >= 65 && bechString.charCodeAt(p) <= 90) {
has_upper = true;
}
}
if (has_lower && has_upper) {
return null;
}
// Convert to lowercase and find separator
bechString = bechString.toLowerCase();
const pos = bechString.lastIndexOf("1");
if (pos < 1 || pos + 7 > bechString.length || bechString.length > 90) {
return null;
}
// Extract HRP and data
const hrp = bechString.substring(0, pos),
data = [];
// Convert data characters to 5-bit integers
for (p = pos + 1; p < bechString.length; ++p) {
const d = b32ab.indexOf(bechString.charAt(p));
if (d === -1) {
return null;
}
data.push(d);
}
// Verify checksum and determine encoding type
const encoding = verify_checksum_with_type(hrp, data);
if (!encoding) {
return null;
}
// For Taproot (witness version 1), ensure bech32m encoding
if (data[0] === 1 && encoding !== "bech32m") {
return null;
}
// For version 0, ensure bech32 encoding
if (data[0] === 0 && encoding !== "bech32") {
return null;
}
return {
"hrp": hrp,
"data": data.slice(0, data.length - 6),
"encoding": encoding
};
}
// Modified polymod function to support both bech32 and bech32m
function verify_checksum_with_type(hrp, data) {
const modulo = polymod(hrp_expand(hrp).concat(data));
// Returns the encoding type: "bech32", "bech32m", or null if invalid
if (modulo === BECH32_CONST) return "bech32";
if (modulo === BECH32M_CONST) return "bech32m";
return null;
}
// Converts a binary array to decimal array for Bech32 encoding
function bech32_dec_array(bitarr) {
const hexstr = [0];
$.each(bitarr, function(i, bits) {
hexstr.push(parseInt(bits, 2));
});
return hexstr;
}
// Converts a public key to a Bech32 address
function pub_to_address_bech32(hrp, pubkey) {
const step1 = hash160(pubkey),
step2 = hex_string_to_binary_string(step1),
step3 = step2.match(/.{1,5}/g),
step4 = bech32_dec_array(step3);
return bech32_encode(hrp, step4);
}
// ** Secp256k1: **
// Performs modular arithmetic (a mod m) with correct handling of negative numbers
function mod(a, m = CURVE.P) {
const r = a % m;
return r >= 0n ? r : m + r;
}
// Evaluates the secp256k1 curve equation y² = x³ + 7 for a given x coordinate
function weierstrass(x) {
return mod(x ** 3n + CURVE.b);
}
// Implements Extended Euclidean Algorithm to find GCD and Bézout's identity coefficients
function egcd(a, b) {
if (typeof a === "number") a = BigInt(a);
if (typeof b === "number") b = BigInt(b);
let [x, y, u, v] = [0n, 1n, 1n, 0n];
while (a !== 0n) {
const q = b / a,
r = b % a;
let m = x - u * q,
n = y - v * q;
[b, a] = [a, r];
[x, y] = [u, v];
[u, v] = [m, n];
}
return [b, x, y];
}
// Calculates the modular multiplicative inverse using extended Euclidean algorithm
function invert(number, modulo = CURVE.P) {
if (number === 0n || modulo <= 0n) {
throw new Error("invert: invalid number");
}
const [g, x] = egcd(mod(number, modulo), modulo);
if (g !== 1n) throw new Error("invert: does not exist");
return mod(x, modulo);
}
// Some basic hex / byte array helpers
// Converts hexadecimal string to Uint8Array with zero-padding for odd length
function hex_to_bytes(hex) {
if (typeof hex !== "string") throw new TypeError("hexToBytes: expected string");
if (hex.length % 2 !== 0) hex = "0" + hex; // pad if needed
const array = new Uint8Array(hex.length / 2);
for (let i = 0; i < array.length; i++) {
const j = i * 2;
array[i] = parseInt(hex.slice(j, j + 2), 16);
}
return array;
}
// Converts Uint8Array to lowercase hexadecimal string with zero-padding
function bytes_to_hex(uint8a) {
let hex = "";
for (let i = 0; i < uint8a.length; i++) {
hex += uint8a[i].toString(16).padStart(2, "0");
}
return hex;
}
// Converts hexadecimal string to BigInt with 0x prefix
function hex_to_number(hex) {
if (typeof hex !== "string") throw new TypeError("hexToNumber: expected string");
return BigInt("0x" + hex);
}
// Converts Uint8Array to BigInt via intermediate hex representation
function bytes_to_number(bytes) {
return hex_to_number(bytes_to_hex(bytes));
}
// Zero-pads a number's hexadecimal representation to 64 characters (32 bytes)
function pad64(num) {
return num.toString(16).padStart(64, "0");
}
// Implements point addition and doubling in Jacobian projective coordinates
class JacobianPoint {
constructor(x, y, z) {
this.x = x;
this.y = y;
this.z = z;
}
static fromAffine(p) {
return new JacobianPoint(p.x, p.y, 1n);
}
// Point doubling in Jacobian coordinates
double() {
const {
"x": X1,
"y": Y1,
"z": Z1
} = this;
if (!Y1) return new JacobianPoint(0n, 0n, 0n);
const A = mod(X1 ** 2n),
B = mod(Y1 ** 2n),
C = mod(B ** 2n),
D = mod(2n * (mod((X1 + B) ** 2n) - A - C)),
E = mod(3n * A),
F = mod(E ** 2n),
X3 = mod(F - 2n * D),
Y3 = mod(E * (D - X3) - 8n * C),
Z3 = mod(2n * Y1 * Z1);
return new JacobianPoint(X3, Y3, Z3);
}
// Point addition in Jacobian coordinates
add(other) {
if (!other.x && !other.y) return this;
if (!this.x && !this.y) return other;
const {
"x": X1,
"y": Y1,
"z": Z1
} = this, {
"x": X2,
"y": Y2,
"z": Z2
} = other, Z1Z1 = mod(Z1 ** 2n), Z2Z2 = mod(Z2 ** 2n), U1 = mod(X1 * Z2Z2), U2 = mod(X2 * Z1Z1), S1 = mod(Y1 * Z2 * Z2Z2), S2 = mod(Y2 * Z1 * Z1Z1), H = mod(U2 - U1), r = mod(S2 - S1);
if (H === 0n) {
if (r === 0n) {
return this.double();
} else {
return new JacobianPoint(0n, 0n, 0n);
}
}
const HH = mod(H ** 2n),
HHH = mod(H * HH),
V = mod(U1 * HH),
X3 = mod(r ** 2n - HHH - 2n * V),
Y3 = mod(r * (V - X3) - S1 * HHH),
Z3 = mod(Z1 * Z2 * H);
return new JacobianPoint(X3, Y3, Z3);
}
// Simple double-and-add scalar multiplication
multiplyUnsafe(scalar) {
let n = scalar;
if (typeof n !== "bigint") n = BigInt(n);
n = n % CURVE.n;
if (n === 0n) return new JacobianPoint(0n, 0n, 0n);
let p = new JacobianPoint(0n, 0n, 0n),
d = this;
while (n > 0n) {
if (n & 1n) p = p.add(d);
d = d.double();
n >>= 1n;
}
return p;
}
toAffine() {
if (this.z === 0n) {
return new Point(0n, 0n);
}
const iz = invert(this.z, CURVE.P),
iz2 = mod(iz ** 2n),
x = mod(this.x * iz2),
y = mod(this.y * iz2 * iz);
return new Point(x, y);
}
}
// Represents a point on secp256k1 curve in affine coordinates (x,y)
class Point {
constructor(x, y) {
this.x = x;
this.y = y;
}
// Create new point from a private key scalar
static fromPrivateKey(privateKey) {
const key = normalize_privatekey(privateKey);
return Point.BASE.multiply(key);
}
// Parse a compressed or uncompressed hex/bytes public key
static fromHex(hex) {
const bytes = hex instanceof Uint8Array ? hex : hex_to_bytes(hex);
if (bytes.length === 32) {
return this.fromX(bytes);
}
const header = bytes[0];
if (header === 0x02 || header === 0x03) {
return this.fromCompressedHex(bytes);
}
if (header === 0x04) {
return this.fromUncompressedHex(bytes);
}
throw new Error("Point.fromHex: invalid format");
}
// For 32-byte X only
static fromX(bytes) {
const x = bytes_to_number(bytes),
y2 = weierstrass(x);
let y = sqrt_mod(y2); // we need sqrt for y
if ((y & 1n) === 1n) {
y = mod(-y);
}
const p = new Point(x, y);
p.assertValidity();
return p;
}
static fromCompressedHex(bytes) {
if (bytes.length !== 33) {
throw new Error("Compressed pubkey must be 33 bytes");
}
const x = bytes_to_number(bytes.slice(1)),
y2 = weierstrass(x);
let y = sqrt_mod(y2);
const odd = (y & 1n) === 1n,
isFirstByteOdd = (bytes[0] & 1) === 1;
if (odd !== isFirstByteOdd) {
y = mod(-y);
}
const p = new Point(x, y);
p.assertValidity();
return p;
}
static fromUncompressedHex(bytes) {
if (bytes.length !== 65) {
throw new Error("Uncompressed pubkey must be 65 bytes");
}
const x = bytes_to_number(bytes.slice(1, 33)),
y = bytes_to_number(bytes.slice(33)),
p = new Point(x, y);
p.assertValidity();
return p;
}
// Validate that a point is on the curve
assertValidity() {
const {
x,
y
} = this;
if (x < 0n || x >= CURVE.P || y < 0n || y >= CURVE.P) {
throw new Error("Point is not on curve (coordinates out of range)");
}
const left = mod(y * y),
right = weierstrass(x);
if (left !== right) {
throw new Error("Point is not on curve (y^2 != x^3 + 7)");
}
}
// Convert affine to Jacobian => multiply => back to Affine
multiply(scalar) {
return JacobianPoint.fromAffine(this).multiplyUnsafe(scalar).toAffine();
}
// Standard point addition in affine
add(other) {
const pA = JacobianPoint.fromAffine(this),
pB = JacobianPoint.fromAffine(other);
return pA.add(pB).toAffine();
}
// Negate a point
negate() {
return new Point(this.x, mod(-this.y));
}
// For printing / compressed or uncompressed
toHex(compressed = false) {
const xHex = pad64(this.x);
if (compressed) {
// 02 or 03 + x
const prefix = (this.y & 1n) === 1n ? "03" : "02";
return prefix + xHex;
} else {
// 04 + x + y
const yHex = pad64(this.y);
return "04" + xHex + yHex;
}
}
// Shortcut for multiplication by base point
static get BASE() {
return new Point(CURVE.Gx, CURVE.Gy);
}
// For "empty" (aka point at infinity in affine form)
static get ZERO() {
return new Point(0n, 0n);
}
}
// For sqrt mod P, we can use Tonelli–Shanks or a simplified variant for P ≡ 3 (mod 4) (like secp256k1). P is prime => (p+1)/4 exponent y = x^((p+1)/4) mod p
const P_1_4 = (CURVE.P + 1n) >> 2n;
// Calculates modular square root using simplified Tonelli-Shanks for p ≡ 3 (mod 4)
function sqrt_mod(x) {
return pow_mod(x, P_1_4, CURVE.P);
}
// Performs modular exponentiation using square-and-multiply algorithm
function pow_mod(base, exponent, modulus) {
let result = 1n,
b = mod(base, modulus),
e = exponent;
while (e > 0n) {
if (e & 1n) result = mod(result * b, modulus);
b = mod(b * b, modulus);
e >>= 1n;
}
return result;
}
// Computes modular exponentiation using square-and-multiply algorithm with optional modulus P
function xpow_mod(a, power, m = xmr_CURVE.P) {
let res = 1n;
while (power > 0n) {
if (power & 1n) {
res = xmod(res * a, m);
}
power >>= 1n;
a = xmod(a * a, m);
}
return res;
}
// Validates and normalizes private key to BigInt within curve order range
function normalize_privatekey(privateKey) {
let key = null;
if (typeof privateKey === "bigint") {
key = privateKey;
} else if (typeof privateKey === "string") {
key = hex_to_number(privateKey);
} else if (privateKey instanceof Uint8Array) {
key = bytes_to_number(privateKey);
} else {
throw new Error("Invalid private key type");
}
key = key % CURVE.n;
if (key <= 0n || key >= CURVE.n) {
throw new Error("Invalid private key range");
}
return key;
}
// Derives compressed or uncompressed public key from private key scalar
function get_publickey(privateKey, isCompressed = true) {
const P = Point.fromPrivateKey(privateKey);
return P.toHex(isCompressed);
}
// Export the main Point class
secp.Point = Point;
// ** Hash Functions: **
// Generates HMAC using SJCL with optional hex encoding
function hmac_bits(message, key, encode) {
const enc_msg = (encode == "hex") ? hex_to_bits(message) : message,
hmac = new sjcl.misc.hmac(key, sjcl.hash.sha512);
return from_bits(hmac.encrypt(enc_msg));
}
// Computes HMAC-SHA hash with optional key encoding
function hmacsha(key, hash, encode) {
const enc_key = (encode == "hex") ? hex_to_bits(key) : key;
return from_bits(hmacsha_bits(enc_key, hash));
}
// Performs HMAC-SHA hash computation on input key
function hmacsha_bits(key, hash) {
return sjcl.hash[hash].hash(key);
}
// Computes double hash: RIPEMD160(SHA256(input))
function hash160(pub) {
return hmacsha(hmacsha(pub, "sha256", "hex"), "ripemd160", "hex");
}
// Computes a substring of SHA256 hash
function sha_sub(val, lim) {
return hmacsha(val, "sha256").slice(0, lim);
}
// ** Key & Address Generation: **
// Encodes private key to Wallet Import Format (WIF) with optional compression
function privkey_wif(versionbytes, hexkey, comp) {
const compressed = (comp) ? "01" : "";
return b58check_encode(versionbytes + hexkey + compressed);
}
// Generates corresponding public key from a private key
function priv_to_pub(priv) {
return secp.getPublicKey(priv, true);
}
// Converts compressed public key to full uncompressed format
function expand_pub(pub) {
return secp.Point.fromHex(pub).toHex(false);
}
// Generates standard cryptocurrency address from public key
function pub_to_address(versionbytes, pub) {
return hash160_to_address(versionbytes, hash160(pub));
}
// Derives Ethereum-specific address from public key
function pub_to_eth_address(pub) {
const xp_pub = expand_pub(pub),
keccak = "0x" + keccak_256(hex_to_bytes(xp_pub.slice(2))),
addr = "0x" + keccak.slice(26);
return to_checksum_address(addr);
}
// Converts RIPEMD160 hash to a cryptocurrency address
function hash160_to_address(versionbytes, h160) {
return b58check_encode(versionbytes + h160);
}
// Converts an Ethereum address to checksum format
function to_checksum_address(e) {
if (void 0 === e) {
return "";
}
if (!/^(0x)?[0-9a-f]{40}$/i.test(e)) {
throw new Error("Given address " + e + " is not a valid Ethereum address.");
return
}
e = e.toLowerCase().replace(/^0x/i, "");
for (var t = keccak256(e).replace(/^0x/i, ""), r = "0x", n = 0; n < e.length; n++)
7 < parseInt(t[n], 16) ? r += e[n].toUpperCase() : r += e[n];
return r;
}
// ** Bitcoin Cash Specific: **
// Converts a legacy Bitcoin Cash address to CashAddr format
function pub_to_cashaddr(legacy) {
const c_addr = bch_cashaddr("bitcoincash", "P2PKH", legacy);
return c_addr.split(":")[1];
}
// Converts a CashAddr format address to legacy Bitcoin Cash address
function bch_legacy(cadr) {
try {
const address = (cadr.indexOf(":") === -1) ? "bitcoincash:" + cadr : cadr,
version = 0,
dec = cashaddr.decode(address),
bytes = dec.hash,
bytesarr = Array.from(bytes),
conc = concat_array([0], bytesarr),
unbuf = buf2hex(conc);
return b58check_encode(unbuf);
} catch (e) {
//console.error(e.name, e.message);
return cadr
}
}
// Converts a legacy Bitcoin Cash address to CashAddr format
function bch_cashaddr(prefix, type, legacy) {
try {