keccak-wasm/keccak_wasm.js

WASM implementation of keccak

let wasm;

const cachedTextDecoder = (typeof TextDecoder !== 'undefined' ? new TextDecoder('utf-8', { ignoreBOM: true, fatal: true }) : { decode: () => { throw Error('TextDecoder not available') } } );

if (typeof TextDecoder !== 'undefined') { cachedTextDecoder.decode(); };

let cachedUint8Memory0 = null;

function getUint8Memory0() {
    if (cachedUint8Memory0 === null || cachedUint8Memory0.byteLength === 0) {
        cachedUint8Memory0 = new Uint8Array(wasm.memory.buffer);
    }
    return cachedUint8Memory0;
}

function getStringFromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
}

const heap = new Array(128).fill(undefined);

heap.push(undefined, null, true, false);

let heap_next = heap.length;

function addHeapObject(obj) {
    if (heap_next === heap.length) heap.push(heap.length + 1);
    const idx = heap_next;
    heap_next = heap[idx];

    heap[idx] = obj;
    return idx;
}

let cachedInt32Memory0 = null;

function getInt32Memory0() {
    if (cachedInt32Memory0 === null || cachedInt32Memory0.byteLength === 0) {
        cachedInt32Memory0 = new Int32Array(wasm.memory.buffer);
    }
    return cachedInt32Memory0;
}

function getObject(idx) { return heap[idx]; }

function dropObject(idx) {
    if (idx < 132) return;
    heap[idx] = heap_next;
    heap_next = idx;
}

function takeObject(idx) {
    const ret = getObject(idx);
    dropObject(idx);
    return ret;
}

function getArrayU8FromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
}

let WASM_VECTOR_LEN = 0;

function passArray8ToWasm0(arg, malloc) {
    const ptr = malloc(arg.length * 1, 1) >>> 0;
    getUint8Memory0().set(arg, ptr / 1);
    WASM_VECTOR_LEN = arg.length;
    return ptr;
}

const cachedTextEncoder = (typeof TextEncoder !== 'undefined' ? new TextEncoder('utf-8') : { encode: () => { throw Error('TextEncoder not available') } } );

const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
    ? function (arg, view) {
    return cachedTextEncoder.encodeInto(arg, view);
}
    : function (arg, view) {
    const buf = cachedTextEncoder.encode(arg);
    view.set(buf);
    return {
        read: arg.length,
        written: buf.length
    };
});

function passStringToWasm0(arg, malloc, realloc) {

    if (realloc === undefined) {
        const buf = cachedTextEncoder.encode(arg);
        const ptr = malloc(buf.length, 1) >>> 0;
        getUint8Memory0().subarray(ptr, ptr + buf.length).set(buf);
        WASM_VECTOR_LEN = buf.length;
        return ptr;
    }

    let len = arg.length;
    let ptr = malloc(len, 1) >>> 0;

    const mem = getUint8Memory0();

    let offset = 0;

    for (; offset < len; offset++) {
        const code = arg.charCodeAt(offset);
        if (code > 0x7F) break;
        mem[ptr + offset] = code;
    }

    if (offset !== len) {
        if (offset !== 0) {
            arg = arg.slice(offset);
        }
        ptr = realloc(ptr, len, len = offset + arg.length * 3, 1) >>> 0;
        const view = getUint8Memory0().subarray(ptr + offset, ptr + len);
        const ret = encodeString(arg, view);

        offset += ret.written;
        ptr = realloc(ptr, len, offset, 1) >>> 0;
    }

    WASM_VECTOR_LEN = offset;
    return ptr;
}
/**
* @param {Uint8Array} bytes
* @returns {Uint8Array}
*/
export function keccak224(bytes) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak224(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_free(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {string}
*/
export function keccak224ToHex(bytes) {
    let deferred2_0;
    let deferred2_1;
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak224ToHex(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        deferred2_0 = r0;
        deferred2_1 = r1;
        return getStringFromWasm0(r0, r1);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
        wasm.__wbindgen_free(deferred2_0, deferred2_1, 1);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {Uint8Array}
*/
export function keccak256(bytes) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak256(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_free(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {string}
*/
export function keccak256ToHex(bytes) {
    let deferred2_0;
    let deferred2_1;
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak256ToHex(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        deferred2_0 = r0;
        deferred2_1 = r1;
        return getStringFromWasm0(r0, r1);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
        wasm.__wbindgen_free(deferred2_0, deferred2_1, 1);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {Uint8Array}
*/
export function keccak384(bytes) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak384(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_free(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {string}
*/
export function keccak384Hex(bytes) {
    let deferred2_0;
    let deferred2_1;
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak384Hex(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        deferred2_0 = r0;
        deferred2_1 = r1;
        return getStringFromWasm0(r0, r1);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
        wasm.__wbindgen_free(deferred2_0, deferred2_1, 1);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {Uint8Array}
*/
export function keccak512(bytes) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak512(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_free(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* @param {Uint8Array} bytes
* @returns {string}
*/
export function keccak512Hex(bytes) {
    let deferred2_0;
    let deferred2_1;
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccak512Hex(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        deferred2_0 = r0;
        deferred2_1 = r1;
        return getStringFromWasm0(r0, r1);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
        wasm.__wbindgen_free(deferred2_0, deferred2_1, 1);
    }
}

const KeccakHashFinalization = (typeof FinalizationRegistry === 'undefined')
    ? { register: () => {}, unregister: () => {} }
    : new FinalizationRegistry(ptr => wasm.__wbg_keccakhash_free(ptr >>> 0));
/**
*/
export class KeccakHash {
	#__wbg_ptr;

    #__destroy_into_raw() {
        const ptr = this.#__wbg_ptr;
        this.#__wbg_ptr = 0;
        KeccakHashFinalization.unregister(this);
        return ptr;
    }

    free() {
        const ptr = this.#__destroy_into_raw();
        wasm.__wbg_keccakhash_free(ptr);
    }
    /**
    * Creates a new KeccakHash instance.
    *
    * **You must call the `.free()` method when you're done using this if you're not using the `.final_digest()` or
    * `.final_digest_hex()` methods.**
    *
    * bits must be must be 224, 256, 384, or 512. If they aren't, an error will be thrown.
    * @param {number} bits
    */
    constructor(bits) {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.keccakhash_new(retptr, bits);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var r2 = getInt32Memory0()[retptr / 4 + 2];
            if (r2) {
                throw takeObject(r1);
            }
            this.#__wbg_ptr = r0 >>> 0;
            return this;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * @returns {Uint8Array}
    */
    test_hash_state() {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.keccakhash_test_hash_state(retptr, this.#__wbg_ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var v1 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_free(r0, r1 * 1, 1);
            return v1;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Adds bytes to the hash
    * @param {Uint8Array} bytes
    */
    update(bytes) {
        const ptr0 = passArray8ToWasm0(bytes, wasm.__wbindgen_malloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccakhash_update(this.#__wbg_ptr, ptr0, len0);
    }
    /**
    * Adds a string to the hash, encoded as utf8.
    * @param {string} data
    */
    updateStr(data) {
        const ptr0 = passStringToWasm0(data, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
        const len0 = WASM_VECTOR_LEN;
        wasm.keccakhash_update(this.#__wbg_ptr, ptr0, len0);
    }
    /**
    * Discards all the data so far
    */
    reset() {
        wasm.keccakhash_reset(this.#__wbg_ptr);
    }
    /**
    * Returns the resulting hash, and resets this to the initial state.
    * @returns {Uint8Array}
    */
    digest() {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.keccakhash_digest(retptr, this.#__wbg_ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var v1 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_free(r0, r1 * 1, 1);
            return v1;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Returns the resulting hash as a hex-encoded string, and resets this to the initial state.
    * @returns {string}
    */
    digestToHex() {
        let deferred1_0;
        let deferred1_1;
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.keccakhash_digestToHex(retptr, this.#__wbg_ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            deferred1_0 = r0;
            deferred1_1 = r1;
            return getStringFromWasm0(r0, r1);
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
            wasm.__wbindgen_free(deferred1_0, deferred1_1, 1);
        }
    }
    /**
    * Returns the resulting hash and frees the instance. You should not use the object after calling this.
    * @returns {Uint8Array}
    */
    finalDigest() {
        try {
            const ptr = this.#__destroy_into_raw();
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.keccakhash_finalDigest(retptr, ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var v1 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_free(r0, r1 * 1, 1);
            return v1;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Returns the resulting hash and frees the instance. You should not use the object after calling this.
    * @returns {string}
    */
    finalDigestToHex() {
        let deferred1_0;
        let deferred1_1;
        try {
            const ptr = this.#__destroy_into_raw();
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.keccakhash_finalDigestToHex(retptr, ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            deferred1_0 = r0;
            deferred1_1 = r1;
            return getStringFromWasm0(r0, r1);
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
            wasm.__wbindgen_free(deferred1_0, deferred1_1, 1);
        }
    }
}

async function __wbg_load(module, imports) {
    if (typeof Response === 'function' && module instanceof Response) {
        if (typeof WebAssembly.instantiateStreaming === 'function') {
            try {
                return await WebAssembly.instantiateStreaming(module, imports);

            } catch (e) {
                if (module.headers.get('Content-Type') != 'application/wasm') {
                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);

                } else {
                    throw e;
                }
            }
        }

        const bytes = await module.arrayBuffer();
        return await WebAssembly.instantiate(bytes, imports);

    } else {
        const instance = await WebAssembly.instantiate(module, imports);

        if (instance instanceof WebAssembly.Instance) {
            return { instance, module };

        } else {
            return instance;
        }
    }
}

function __wbg_get_imports() {
    const imports = {};
    imports.wbg = {};
    imports.wbg.__wbindgen_error_new = function(arg0, arg1) {
        const ret = new Error(getStringFromWasm0(arg0, arg1));
        return addHeapObject(ret);
    };
    imports.wbg.__wbindgen_throw = function(arg0, arg1) {
        throw new Error(getStringFromWasm0(arg0, arg1));
    };

    return imports;
}

function __wbg_init_memory(imports, maybe_memory) {

}

function __wbg_finalize_init(instance, module) {
    wasm = instance.exports;
    __wbg_init.__wbindgen_wasm_module = module;
    cachedInt32Memory0 = null;
    cachedUint8Memory0 = null;


    return wasm;
}


async function __wbg_init(input) {
    if (wasm !== undefined) return wasm;

    if (typeof input === 'undefined') {
        input = new URL('keccak_wasm_bg.wasm', import.meta.url);
    }
    const imports = __wbg_get_imports();

    if (typeof input === 'string' || (typeof Request === 'function' && input instanceof Request) || (typeof URL === 'function' && input instanceof URL)) {
        input = fetch(input);
    }

    __wbg_init_memory(imports);

    const { instance, module } = await __wbg_load(await input, imports);

    return __wbg_finalize_init(instance, module);
}

await __wbg_init(import("./keccak_wasm_bg.wasm.js").then(imports => {return imports.WASM_BINARY;}));