@ecash/lib/src/ffi/ecash_lib_wasm_browser.js

Library for eCash transaction building

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 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;
}

let cachedInt32Memory0 = null;

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

function getArrayU8FromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
}
/**
* Calculate SHA512(data).
* @param {Uint8Array} data
* @returns {Uint8Array}
*/
export function sha512(data) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        wasm.sha512(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_export_1(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* Calculate SHA256(SHA256(data)).
* @param {Uint8Array} data
* @returns {Uint8Array}
*/
export function sha256d(data) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        wasm.sha256d(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_export_1(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* Calculate SHA256(data).
* @param {Uint8Array} data
* @returns {Uint8Array}
*/
export function sha256(data) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        wasm.sha256(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_export_1(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
* Calculate RIPEMD160(SHA256(data)), commonly used as address hash.
* @param {Uint8Array} data
* @returns {Uint8Array}
*/
export function shaRmd160(data) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        wasm.shaRmd160(retptr, ptr0, len0);
        var r0 = getInt32Memory0()[retptr / 4 + 0];
        var r1 = getInt32Memory0()[retptr / 4 + 1];
        var v2 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_export_1(r0, r1 * 1, 1);
        return v2;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

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;
}

const EccFinalization = (typeof FinalizationRegistry === 'undefined')
    ? { register: () => {}, unregister: () => {} }
    : new FinalizationRegistry(ptr => wasm.__wbg_ecc_free(ptr >>> 0));
/**
* ECC signatures with libsecp256k1.
*/
export class Ecc {

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

    free() {
        const ptr = this.__destroy_into_raw();
        wasm.__wbg_ecc_free(ptr);
    }
    /**
    * Create a new Ecc instance.
    */
    constructor() {
        const ret = wasm.ecc_new();
        this.__wbg_ptr = ret >>> 0;
        return this;
    }
    /**
    * Derive a public key from secret key.
    * @param {Uint8Array} seckey
    * @returns {Uint8Array}
    */
    derivePubkey(seckey) {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            const ptr0 = passArray8ToWasm0(seckey, wasm.__wbindgen_export_0);
            const len0 = WASM_VECTOR_LEN;
            wasm.ecc_derivePubkey(retptr, this.__wbg_ptr, ptr0, len0);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var r2 = getInt32Memory0()[retptr / 4 + 2];
            var r3 = getInt32Memory0()[retptr / 4 + 3];
            if (r3) {
                throw takeObject(r2);
            }
            var v2 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v2;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Sign an ECDSA signature.
    * @param {Uint8Array} seckey
    * @param {Uint8Array} msg
    * @returns {Uint8Array}
    */
    ecdsaSign(seckey, msg) {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            const ptr0 = passArray8ToWasm0(seckey, wasm.__wbindgen_export_0);
            const len0 = WASM_VECTOR_LEN;
            const ptr1 = passArray8ToWasm0(msg, wasm.__wbindgen_export_0);
            const len1 = WASM_VECTOR_LEN;
            wasm.ecc_ecdsaSign(retptr, this.__wbg_ptr, ptr0, len0, ptr1, len1);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var r2 = getInt32Memory0()[retptr / 4 + 2];
            var r3 = getInt32Memory0()[retptr / 4 + 3];
            if (r3) {
                throw takeObject(r2);
            }
            var v3 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v3;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Sign a Schnorr signature.
    * @param {Uint8Array} seckey
    * @param {Uint8Array} msg
    * @returns {Uint8Array}
    */
    schnorrSign(seckey, msg) {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            const ptr0 = passArray8ToWasm0(seckey, wasm.__wbindgen_export_0);
            const len0 = WASM_VECTOR_LEN;
            const ptr1 = passArray8ToWasm0(msg, wasm.__wbindgen_export_0);
            const len1 = WASM_VECTOR_LEN;
            wasm.ecc_schnorrSign(retptr, this.__wbg_ptr, ptr0, len0, ptr1, len1);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var r2 = getInt32Memory0()[retptr / 4 + 2];
            var r3 = getInt32Memory0()[retptr / 4 + 3];
            if (r3) {
                throw takeObject(r2);
            }
            var v3 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v3;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Return whether the given secret key is valid, i.e. whether is of correct
    * length (32 bytes) and is on the curve.
    * @param {Uint8Array} seckey
    * @returns {boolean}
    */
    isValidSeckey(seckey) {
        const ptr0 = passArray8ToWasm0(seckey, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        const ret = wasm.ecc_isValidSeckey(this.__wbg_ptr, ptr0, len0);
        return ret !== 0;
    }
    /**
    * Add a scalar to a secret key.
    * @param {Uint8Array} a
    * @param {Uint8Array} b
    * @returns {Uint8Array}
    */
    seckeyAdd(a, b) {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            const ptr0 = passArray8ToWasm0(a, wasm.__wbindgen_export_0);
            const len0 = WASM_VECTOR_LEN;
            const ptr1 = passArray8ToWasm0(b, wasm.__wbindgen_export_0);
            const len1 = WASM_VECTOR_LEN;
            wasm.ecc_seckeyAdd(retptr, this.__wbg_ptr, ptr0, len0, ptr1, len1);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var r2 = getInt32Memory0()[retptr / 4 + 2];
            var r3 = getInt32Memory0()[retptr / 4 + 3];
            if (r3) {
                throw takeObject(r2);
            }
            var v3 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v3;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Add a scalar to a public key (adding G*b).
    * @param {Uint8Array} a
    * @param {Uint8Array} b
    * @returns {Uint8Array}
    */
    pubkeyAdd(a, b) {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            const ptr0 = passArray8ToWasm0(a, wasm.__wbindgen_export_0);
            const len0 = WASM_VECTOR_LEN;
            const ptr1 = passArray8ToWasm0(b, wasm.__wbindgen_export_0);
            const len1 = WASM_VECTOR_LEN;
            wasm.ecc_pubkeyAdd(retptr, this.__wbg_ptr, ptr0, len0, ptr1, len1);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var r2 = getInt32Memory0()[retptr / 4 + 2];
            var r3 = getInt32Memory0()[retptr / 4 + 3];
            if (r3) {
                throw takeObject(r2);
            }
            var v3 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v3;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
}

const Sha256HFinalization = (typeof FinalizationRegistry === 'undefined')
    ? { register: () => {}, unregister: () => {} }
    : new FinalizationRegistry(ptr => wasm.__wbg_sha256h_free(ptr >>> 0));
/**
* Instance to calculate SHA256 in a streaming fashion
*/
export class Sha256H {

    static __wrap(ptr) {
        ptr = ptr >>> 0;
        const obj = Object.create(Sha256H.prototype);
        obj.__wbg_ptr = ptr;
        Sha256HFinalization.register(obj, obj.__wbg_ptr, obj);
        return obj;
    }

    __destroy_into_raw() {
        const ptr = this.__wbg_ptr;
        this.__wbg_ptr = 0;
        Sha256HFinalization.unregister(this);
        return ptr;
    }

    free() {
        const ptr = this.__destroy_into_raw();
        wasm.__wbg_sha256h_free(ptr);
    }
    /**
    * Create new hasher instance
    */
    constructor() {
        const ret = wasm.sha256h_new();
        this.__wbg_ptr = ret >>> 0;
        return this;
    }
    /**
    * Feed bytes into the hasher
    * @param {Uint8Array} data
    */
    update(data) {
        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        wasm.sha256h_update(this.__wbg_ptr, ptr0, len0);
    }
    /**
    * Finalize the hash and return the result
    * @returns {Uint8Array}
    */
    finalize() {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.sha256h_finalize(retptr, this.__wbg_ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var v1 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v1;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Clone the hasher
    * @returns {Sha256H}
    */
    clone() {
        const ret = wasm.sha256h_clone(this.__wbg_ptr);
        return Sha256H.__wrap(ret);
    }
}

const Sha512HFinalization = (typeof FinalizationRegistry === 'undefined')
    ? { register: () => {}, unregister: () => {} }
    : new FinalizationRegistry(ptr => wasm.__wbg_sha512h_free(ptr >>> 0));
/**
* Instance to calculate SHA512 in a streaming fashion
*/
export class Sha512H {

    static __wrap(ptr) {
        ptr = ptr >>> 0;
        const obj = Object.create(Sha512H.prototype);
        obj.__wbg_ptr = ptr;
        Sha512HFinalization.register(obj, obj.__wbg_ptr, obj);
        return obj;
    }

    __destroy_into_raw() {
        const ptr = this.__wbg_ptr;
        this.__wbg_ptr = 0;
        Sha512HFinalization.unregister(this);
        return ptr;
    }

    free() {
        const ptr = this.__destroy_into_raw();
        wasm.__wbg_sha512h_free(ptr);
    }
    /**
    * Create new hasher instance
    */
    constructor() {
        const ret = wasm.sha512h_new();
        this.__wbg_ptr = ret >>> 0;
        return this;
    }
    /**
    * Feed bytes into the hasher
    * @param {Uint8Array} data
    */
    update(data) {
        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export_0);
        const len0 = WASM_VECTOR_LEN;
        wasm.sha512h_update(this.__wbg_ptr, ptr0, len0);
    }
    /**
    * Finalize the hash and return the result
    * @returns {Uint8Array}
    */
    finalize() {
        try {
            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
            wasm.sha512h_finalize(retptr, this.__wbg_ptr);
            var r0 = getInt32Memory0()[retptr / 4 + 0];
            var r1 = getInt32Memory0()[retptr / 4 + 1];
            var v1 = getArrayU8FromWasm0(r0, r1).slice();
            wasm.__wbindgen_export_1(r0, r1 * 1, 1);
            return v1;
        } finally {
            wasm.__wbindgen_add_to_stack_pointer(16);
        }
    }
    /**
    * Clone the hasher
    * @returns {Sha512H}
    */
    clone() {
        const ret = wasm.sha512h_clone(this.__wbg_ptr);
        return Sha512H.__wrap(ret);
    }
}

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_string_new = function(arg0, arg1) {
        const ret = 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;
}

function initSync(module) {
    if (wasm !== undefined) return wasm;

    const imports = __wbg_get_imports();

    __wbg_init_memory(imports);

    if (!(module instanceof WebAssembly.Module)) {
        module = new WebAssembly.Module(module);
    }

    const instance = new WebAssembly.Instance(module, imports);

    return __wbg_finalize_init(instance, module);
}

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

    if (typeof input === 'undefined') {
        input = new URL('ecash_lib_wasm_bg_browser.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);
}

export { initSync }
export default __wbg_init;