Malformed UTF-8 data

[lnpu]

I store the data in localstorage when encrypt(data, ducument.querySelector('.pwd').value), then i try to call decrypt(localStorage.data, ducument.querySelector('.pwd').value), it show the error: Error: Malformed UTF-8 data

But when I try this encrypt(data, '123') and decrypt(data, '123'), it is successful. and why?

How to fix it?

cryptojs "version": "4.0.0",

code:

    encrypt:function(data,key){
        let encJson = CryptoJS.AES.encrypt(JSON.stringify(data), key).toString();
         return CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(encJson));

      },
      decrypt:function(data,key){
        let decData = CryptoJS.enc.Base64.parse(data).toString(CryptoJS.enc.Utf8);
         return CryptoJS.AES.decrypt(decData, key).toString(CryptoJS.enc.Utf8);
      },

[shivam4ukhandelwal]

i am also getting same error

[cchaniotaki]

I also have the same problem. When I encrypt the data and decrypt them at the same time, everything is ok. But if I do some process and try it later I'm getting Error: Malformed UTF-8 data.

[arthur657834]

same error，anyone can help?

[cangyu1993]

+1,same error，anyone can help?

[cangyu1993]

solve

//加密方法aes
export function Encrypt(word, key = 'share') {
    let encJson = CryptoJS.AES.encrypt(JSON.stringify(word), key).toString()
    let encData = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(encJson))
    return encData
}

//解密方法aes
export function Decrypt(word, key = 'share') {
    let decData = CryptoJS.enc.Base64.parse(word).toString(CryptoJS.enc.Utf8)
    let bytes = CryptoJS.AES.decrypt(decData, key).toString(CryptoJS.enc.Utf8)
    return JSON.parse(bytes)
}

[marturojt]

thanks @cangyu1993 it was the solution for me =)

[Hamzatesting]

Now calculating the hash with the hashing scheme 'HMAC-SHA256' with the secret key 0F5DD14AE2

Resultant hash: c7689cda7474eb1adcd343fd0c0b676bad0ba66361cc46db589bdb0da4c1c867

Merchant should also ensure that UTF-8 encoding is used to convert the input from a printable string to a byte array. Also Note that 7-bit ASCII encoding is unchanged for UTF-8.

How Can I achieve that???

[NaokiHaba]

I followed the advice of cangyu1993 but could not resolve the problem!

So I took the following steps.

If there are any comrades who have the same problem, please refer to the following.

Replace this.configService.get('cryptoJs.secretKey') => with your private key

The point was to composite and encrypt with CryptoJS.enc.Latin1

public getEncodePath(decodePath: string): string {
    const json = CryptoJS.AES.encrypt(
        JSON.stringify(decodePath),
        this.SECRET_KEY
    ).toString()

    return CryptoJS.enc.Base64.stringify(CryptoJS.enc.Latin1.parse(json))
}

public getDecodePath(encodePath: string): string {
    const decodePath = decodeURIComponent(encodePath)

    const data = CryptoJS.enc.Base64.parse(decodePath.toString()).toString(
        CryptoJS.enc.Latin1
    )

    const bytes = CryptoJS.AES.decrypt(data, this.SECRET_KEY).toString(
        CryptoJS.enc.Utf8
    )

    return JSON.parse(bytes)
}

solve

//加密方法aes
export function Encrypt(word, key = 'share') {
    let encJson = CryptoJS.AES.encrypt(JSON.stringify(word), key).toString()
    let encData = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(encJson))
    return encData
}

//解密方法aes
export function Decrypt(word, key = 'share') {
    let decData = CryptoJS.enc.Base64.parse(word).toString(CryptoJS.enc.Utf8)
    let bytes = CryptoJS.AES.decrypt(decData, key).toString(CryptoJS.enc.Utf8)
    return JSON.parse(bytes)
}

[Junaid300]

I got same error and after some debugging I realized , when we store encrypted data in the local storage it add "" at the starting and ending of the encrypted string. ""encrypted_string"" . when we try to decrypt our encrypted string that stored in localstorage , it try to decrypt it according to "enrypted_string" but it receives ""encrypted_string"". therefore we receive this error from local storage. In otherword, it is because of mismatching our encrypted string. what i did is replaced extra "" from string and then decrypted it. it worked for me

let data = // get_data_from_localstroage
 let newExactString = data.replaceAll('"', '');
  // our remaining decryption process

[rafaelrcamargo]

I got same error and after some debugging I realized , when we store encrypted data in the local storage it add "" at the starting and ending of the encrypted string. ""encrypted_string"" . when we try to decrypt our encrypted string that stored in localstorage , it try to decrypt it according to "enrypted_string" but it receives ""encrypted_string"". therefore we receive this error from local storage. In otherword, it is because of mismatching our encrypted string.

Same, this changes fixed it. Thanks!! 🎉

[siburuxue]

the same error

logic code: keyArr : ["59ba0f3b71f1c48f","6c56eb9a9ae3f2e8"]

let keyArr = this.key(timestamp);
console.log("key:",JSON.stringify(keyArr));
let key = CryptoJS.enc.Utf8.parse(keyArr[1]);
let iv = CryptoJS.enc.Utf8.parse(keyArr[0]);
try {
    let decrypted = CryptoJS.AES.decrypt(str, key, {iv: iv, padding: CryptoJS.pad.Pkcs7});
    return decrypted.toString(CryptoJS.enc.Utf8);
} catch (e) {
    console.warn('字符串有问题')
    let decrypted = CryptoJS.AES.decrypt(JSON.stringify({str}), key, {iv: iv, padding: CryptoJS.pad.Pkcs7});
    console.warn(decrypted);
    return decrypted.toString(CryptoJS.enc.Utf8);
}

code: return decodeURIComponent(escape(Latin1.stringify(wordArray)));

file name: core.js

/**
 * UTF-8 encoding strategy.
 */
var Utf8 = C_enc.Utf8 = {
    /**
     * Converts a word array to a UTF-8 string.
     *
     * @param {WordArray} wordArray The word array.
     *
     * @return {string} The UTF-8 string.
     *
     * @static
     *
     * @example
     *
     *     var utf8String = CryptoJS.enc.Utf8.stringify(wordArray);
     */
    stringify: function (wordArray) {
        try {
            return decodeURIComponent(escape(Latin1.stringify(wordArray)));
        } catch (e) {
            throw new Error('Malformed UTF-8 data');
        }
    },

    /**
     * Converts a UTF-8 string to a word array.
     *
     * @param {string} utf8Str The UTF-8 string.
     *
     * @return {WordArray} The word array.
     *
     * @static
     *
     * @example
     *
     *     var wordArray = CryptoJS.enc.Utf8.parse(utf8String);
     */
    parse: function (utf8Str) {
        return Latin1.parse(unescape(encodeURIComponent(utf8Str)));
    }
};

wordArray = {"words":[662783787,-595780477,1240360354,328894481,-1342870603,-1871986468,-846486436,-215096290,1333282316,-1915982514,2062575374,1034298291,-591074769,-253370965,1586894295,-1401963879,-1518074259,1471480545,-2039534547,1978237172,1799392137,-2044471085,1787303371,-872658888,2007843255,-2098934614,1135756607,-1309123539,257887438,-163396468,310073464,2127234984,-483125692,1080784552,-1167297,-1960255947,1857222978,440329079,-2101739184,-772799216,901863145,466249350,-1055034133,1297680167,-827313189,81078289,-1657331764,-1767931611,2065950318,-602579389,-1047153412,-1544756005,-1647431463,-957191025,-52567983,-448067314,-74470446,-197003447,-1998540919,198439887,-34790368,1417250341,-1919250117,-1597732977,1496890005,-1957752675,1070888491,573373599,-564100808,-1130180434,-106698934,1359825758,-545726935,-1182776072,1493887619,837950103,-173914669,2086114057,-923848470,1305404275,2123822853,1423502819,-1991350542,244009565,-2049121041,218413331,-676293989,1747348094,329248302,-2083349430,391438431,617087811,1585292479,-860695020,-1269856127,917390152,-655057333,252182965,-1488967731,-1110307512,-604248608,-375316483,1677407784,2079512656,-1035726067,-1286901796,481792725,-68277410,-1147243484,-524808900,1032778243,-1867288406,-571954655,-1461048912,-1224771343,-1722347386,-683456034,1421274621,-64476995,-1943143374,1935757138,-966879669,-985370949,-892770129,-786328702,-1040372620,94478989,-128522452,532768305,-1816190862,-1509010159,457803886,756277512,615446020,794592155,-317144349,1109899367,1534625759,-612181140,-385611715,1709570000,1725828409,-536752057,-1790040395,1764166168,-673685667,-1453428972,-1371007422,656683894,-215083255,347828021,913324715,-445049510,1557621552,-736495164,-889375131,1900115530,384765325,-161369511,-465260670,1762183651,-115741735,2120514618,-199633394,2043533075,-122082824,-113326769,-73659976,-266708001,1592987371,1524866047,422710032,1975250024,-975177668,304417658,2053914142,1258753766,-2037631120,-1917215465,1719019706,-918850027,-828250658,13451467,-1347840015,-1032383124,231333942,-1906017283,1821898117,1645564877,-1751009794,-1969773040,-2112685017,1603164900,1259302154,414183528,56697899,-1145998360,-2045070269,-347554193,1967033372,-1569556365,611143531,-311321342,794388132,-402570441,-1447234584,-137555076,1234916331,290737433,-970069184,994184266,1963510239,1537660855,1945412727,-1984393615,22684664,1968027442,-163191927,-1928612519,-1149116191,-711646820,-1681731440,-1952604617,-1631709545,-1895932354,-1742839762,-23660094,1174589704,-202538041,-1098784653,-1468707993,1439849257,1354541128,-1166811143,-350882802,-24369455,1907649906,-963874565,1563000548,-505880305,311388484,-464767342,2106096143,1236794640,-547526738,-1486460599,811950840,1567071867,255294642,1045067958,-1426598964,-1036097619,2059988220,2060636783,-332843326,-1142199428,681468041,-158679105,-1856930878,1370400410,715919790,-1353934296,1131651023,524597104,-122493717,1094188414,-779326858,-1691945027,1032705938,1741858763,426760714,-755055245,587439086,-1592014481,-1402598979,-84447924,1849257554,872926183,1955533781,1766831134,-1280468640,-86652732,965442858,426687053,-628316930,586731920,-1702907573,1643684965,-1664645882,2039530178,-1797724644,1541419958,-61075100,1368180514,852273721,-790023173,-767958405,3668068,-945960479,-1852972610,1541304321,-819812043,-1726197069,1850241568,-1782924713,-1093675030,1479273926,2026593407,834374195,1654405521,-242586815,1311988711,-1373352944,-1841412184,-337341756,1678758831,-2047888978,-1055108605,-989562122,1533238900,1394850067,-1851908779,1158409690,1629737671,-1292719205,-1104179113,-60409186,1881017509,-1486770236,287295909,-732729686,1075095461,1946341988,305628998,392842715,-1510754665,56402499,-896433242,703533365,-1027840030,733574520,2123383830,1618688771,1810374755,-1378795465,749413994,1458813427,1260903128,972369881,-1757643026,1447894861,-505047702,1553663496,-474885427,-1556856082,-1760028461,-143889988,-79284535,1787476558,1936396162,227049626,-742542581,-546649067,2044767836,-259553045,1413667698,-184056105,-811608936,323103536,201904533,-1902226784,1956638498,1121199911,-625530300,-485503716,600943647,935061702,1201690289,-825465527,1631373512,-314493819,-599010437,222787795,968750905,-2096627163,-512813865,-1531408645,1006231206,-1062361889,697262973,391683053,811592427,-2127082292,-1186910964,-1253312212,-331282737,1619718628,167020057,-249470469,-233377289,-1565951880,523342705,-447243966,400698928,1121234817,1219379136,2007232399,-914092936,1409726492,1422375827,1213224194,292710033,1406867605,1515647925,1184152265,-1500576823,1994671286,1146572266,-742125557,-2011493195,245254937,-1843635556,-1991418638,-1743219463,-1463691455,2142934773,-1074514688,-539894646,1318065745,1811947425,-1303638496,-1868962495,877880890,1228419466,768886283,-2126067246,638839166,-1733989123,309752910,-746051849,-2069089683,807674871,578646677,93622016,-1308821587,-1037360601,1952858891,1333805153,-673916265,365873514,-749448947,-407940647,-95657759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[pncsoares]

Could you please try this?

import * as CryptoJS from 'crypto-js';

export const decrypt = (secret: string, encryptedString: string): string => {
  const keyWordArray = CryptoJS.enc.Utf8.parse(secret);
  const ivWordArray = CryptoJS.enc.Utf8.parse(''.padStart(16, '\0'));
  const cipherTextBase64 = encryptedString;

  const decryptedWordArray = CryptoJS.AES.decrypt(cipherTextBase64, keyWordArray, {
    mode: CryptoJS.mode.CTR,
    iv: ivWordArray,
    padding: CryptoJS.pad.NoPadding,
  });

  const decryptedString = decryptedWordArray.toString(CryptoJS.enc.Utf8);

  return removeEscapeSequences(decryptedString);
};

export const removeEscapeSequences = (text: string): string => {
  return text.replace(/[^ -~]+/g, '');
}

Hope it helps.

[hyrbi]

For me it was a problem with length of the key. As far as I know for 128bit u need 16 symbols key.

[athar-qadri]

I got same error and after some debugging I realized , when we store encrypted data in the local storage it add "" at the starting and ending of the encrypted string. ""encrypted_string"" . when we try to decrypt our encrypted string that stored in localstorage , it try to decrypt it according to "enrypted_string" but it receives ""encrypted_string"". therefore we receive this error from local storage. In otherword, it is because of mismatching our encrypted string. what i did is replaced extra "" from string and then decrypted it. it worked for me

let data = // get_data_from_localstroage
 let newExactString = data.replaceAll('"', '');
  // our remaining decryption process

Thanks junaid, was stuck for 3 hrs!

[sgrbhinge]

I faced this issue while decrypting the file content.

If you are reading the content from the file, it should be converted to string as well.

const data = readFileSync(filePath, { encoding: "utf8" });

Initially the error was due to,

CryptoJS.AES.decrypt(data, secretKey).toString(CryptoJS.enc.Utf8);

Later, I changed this to fix the error as below,

CryptoJS.AES.decrypt(data.toString(), secretKey).toString(CryptoJS.enc.Utf8);

[toiladuong]

I faced the same error 'Melformed UTF-8 data'. And I found another solution to create an AES128-EBC hash .You guys can try my solution using 'crypto' package:

//Encode to base64
const createAES128Hash = (data: string, key: string) => {
  const cipher = createCipheriv('aes-128-ecb', key, null); // createCipheriv imported from 'crypto'
  return Buffer.concat([cipher.update(data), cipher.final()]).toString('base64'); //return base64 string
};

//Decode from base64
const decryptAES128Hash = (base64String: string, key: string) => {
  const cipher = createDecipheriv('aes-128-ecb', key, null); // createDecipheriv imported from 'crypto'
  const originalData = Buffer.concat([cipher.update(Buffer.from(base64String, 'base64')), cipher.final()]).toString('utf8');

  return originalData;
};

[Vinoth-kumar-krishnan]

While decrypting the URL, I encountered the same error: 'Malformed UTF-8 data.' If anyone knows a solution, kindly let us know."

decryptAES = (payload, key) => {
  const encryptedData = CryptoJS.enc.Base64.parse(payload);
  const iv = CryptoJS.lib.WordArray.create(encryptedData.words.slice(0, 4));
  const ciphertext = CryptoJS.lib.WordArray.create(encryptedData.words.slice(4));

  const decrypted = CryptoJS.AES.decrypt({ ciphertext: ciphertext }, key, {
      mode: CryptoJS.mode.CBC,
      padding: CryptoJS.pad.Pkcs7,
      iv: iv
  });
  return decrypted.toString(CryptoJS.enc.Utf8);
}