![\"TEA\u52a0\u5bc6\u7b97\u6cd5\"](\"https:\/\/hungking.cc\/assets\/imgs\/indeex.cc\/TEA.png\")
<\/p>\n
\u3000\u3000TEA \u7b97\u6cd5\u6700\u521d\u662f\u7531\u5251\u6865\u8ba1\u7b97\u673a\u5b9e\u9a8c\u5ba4\u7684 David Wheeler \u548c Roger Needham \u5728 1994 \u5e74\u8bbe\u8ba1\u7684\u3002\u8be5\u7b97\u6cd5\u4f7f\u7528 128 \u4f4d\u7684\u5bc6\u94a5\u4e3a 64 \u4f4d\u7684\u4fe1\u606f\u5757\u8fdb\u884c\u52a0\u5bc6\uff0c\u5b83\u9700\u8981\u8fdb\u884c 64 \u8f6e\u8fed\u4ee3\uff0c\u5c3d\u7ba1\u4f5c\u8005\u8ba4\u4e3a 32 \u8f6e\u5df2\u7ecf\u8db3\u591f\u4e86\u3002\u8be5\u7b97\u6cd5\u4f7f\u7528\u4e86\u4e00\u4e2a\u795e\u79d8\u5e38\u6570\u03b4\u4f5c\u4e3a\u500d\u6570\uff0c\u5b83\u6765\u6e90\u4e8e\u9ec4\u91d1\u6bd4\u7387\uff0c\u4ee5\u4fdd\u8bc1\u6bcf\u4e00\u8f6e\u52a0\u5bc6\u90fd\u4e0d\u76f8\u540c\u3002\u4f46\u03b4\u7684\u7cbe\u786e\u503c\u4f3c\u4e4e\u5e76\u4e0d\u91cd\u8981\uff0c\u8fd9\u91cc TEA \u628a\u5b83\u5b9a\u4e49\u4e3a \u03b4=\u300c(\u221a5 – 1)231\u300d\uff08\u4e5f\u5c31\u662f\u7a0b\u5e8f\u4e2d\u7684 0\u00d79E3779B9\uff09\u3002<\/p>\n
\u3000\u3000
\n\u3000\u3000\u4e4b\u540e TEA \u7b97\u6cd5\u88ab\u53d1\u73b0\u5b58\u5728\u7f3a\u9677\uff0c\u4f5c\u4e3a\u56de\u5e94\uff0c\u8bbe\u8ba1\u8005\u63d0\u51fa\u4e86\u4e00\u4e2a TEA \u7684\u5347\u7ea7\u7248\u672c\u2014\u2014XTEA\uff08\u6709\u65f6\u4e5f\u88ab\u79f0\u4e3a\u201ctean\u201d\uff09\u3002XTEA \u8ddf TEA \u4f7f\u7528\u4e86\u76f8\u540c\u7684\u7b80\u5355\u8fd0\u7b97\uff0c\u4f46\u5b83\u91c7\u7528\u4e86\u622a\u7136\u4e0d\u540c\u7684\u987a\u5e8f\uff0c\u4e3a\u4e86\u963b\u6b62\u5bc6\u94a5\u8868\u653b\u51fb\uff0c\u56db\u4e2a\u5b50\u5bc6\u94a5\uff08\u5728\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\uff0c\u539f 128 \u4f4d\u7684\u5bc6\u94a5\u88ab\u62c6\u5206\u4e3a 4 \u4e2a 32 \u4f4d\u7684\u5b50\u5bc6\u94a5\uff09\u91c7\u7528\u4e86\u4e00\u79cd\u4e0d\u592a\u6b63\u89c4\u7684\u65b9\u5f0f\u8fdb\u884c\u6df7\u5408\uff0c\u4f46\u901f\u5ea6\u66f4\u6162\u4e86\u3002
\n\u3000\u3000
\n\u3000\u3000
\n \u4ee5\u4e0b\u662f\u8fd9\u4e2a\u7b97\u6cd5\u7684ECMAScript\u5f53\u4e0b\u7248\u672c\u7684\u5b9e\u73b0\u8fc7\u7a0b\uff1a<\/p>\n
class Tea {\n\n private static round: number = 32;\n private static key: string = \"3A DA 75 21 DB E3 DB B3 62 B7 49 01 A5 C6 EA D5\";\n\n public static teaEncrypt(enData: ByteArray): ByteArray {\n enData.position = 0;\n\n let len: number = Math.ceil(enData.length \/ 8);\n\n let keyArr: any[] = this.getKey(this.key);\n\n let keyBytes: ByteArray = new ByteArray();\n keyBytes.position;\n keyBytes.endian = Endian.LITTLE_ENDIAN;\n\n for (let i = 0; i < keyArr.length; i++) {\n keyBytes.writeByte(keyArr[i]);\n }\n\n let resData: ByteArray = new ByteArray();\n resData.position = 0;\n resData.endian = Endian.LITTLE_ENDIAN;\n\n let nData: ByteArray = new ByteArray();\n nData.position = 0;\n nData.endian = Endian.LITTLE_ENDIAN;\n\n\n enData.position = 0;\n for (let i: number = 0; i < len; i++) {\n let enBytes: ByteArray = new ByteArray();\n enBytes.position = 0;\n enBytes.endian = Endian.LITTLE_ENDIAN;\n\n if (enData.bytesAvailable >= 8) {\n enData.readBytes(enBytes, 0, 8);\n let encrypted: ByteArray = new ByteArray();\n encrypted.position = 0;\n encrypted.endian = Endian.LITTLE_ENDIAN;\n\n let encryptencrypted = this.encrypt(enBytes, keyBytes);\n\n resData.writeBytes(encrypted, 0, encrypted.length);\n encrypted.clear();\n encrypted = null;\n } else {\n\n enData.readBytes(nData, 0, enData.bytesAvailable);\n }\n enBytes.clear();\n }\n\n nData.position = 0;\n if (nData.length > 0) {\n\n resData.writeBytes(nData, 0, nData.length);\n }\n keyBytes.clear();\n\n return resData;\n enData.clear();\n }\n\n public static teaDecrypt(decData: ByteArray): ByteArray {\n decData.position = 0;\n let len: number = Math.ceil(decData.length \/ 8);\n\n let keyArr: any[] = this.getKey(this.key);\n\n let keyBytes: ByteArray = new ByteArray();\n keyBytes.position;\n keyBytes.endian = Endian.LITTLE_ENDIAN;\n \/\/\u5c06\u5bc6\u94a5\u5199\u5165\u7f13\u51b2\u533a \n for (let i = 0; i < keyArr.length; i++) {\n keyBytes.writeByte(keyArr[i]);\n }\n\n let resData: ByteArray = new ByteArray();\n resData.position = 0;\n resData.endian = Endian.LITTLE_ENDIAN;\n decData.position = 0;\n for (let i: number = 0; i < len; i++) {\n let decBytes: ByteArray = new ByteArray();\n decBytes.position = 0;\n decBytes.endian = Endian.LITTLE_ENDIAN;\n if (decData.bytesAvailable >= 8) {\n decData.readBytes(decBytes, 0, 8);\n let decrypted: ByteArray = new ByteArray();\n decrypted.position = 0;\n decrypted.endian = Endian.LITTLE_ENDIAN;\n\n let decryptdecrypted = this.decrypt(decBytes, keyBytes);\n\n resData.writeBytes(decrypted, 0, decrypted.length);\n decrypted.clear();\n } else {\n\n var nData: ByteArray = new ByteArray();\n nData.position = 0;\n nData.endian = Endian.LITTLE_ENDIAN;\n decData.readBytes(nData, 0, decData.bytesAvailable);\n }\n }\n keyBytes.clear();\n decData.clear();\n trace(\"\u89e3\u5bc6\u540e\u6570\u636e>>>>\" + this.ByteArrayToLongArray(resData, false));\n if (nData.length > 0) {\n nData.readBytes(resData, 0, nData.length);\n }\n trace(\"---->\" + nData.length);\n return resData;\n resData.clear();\n }\n\n\n private static LongArrayToByteArray(data: any[], includeLength: Boolean): ByteArray {\n let length: number = data.length;\n\n let n: number = (length - 1) << 2;\n if (includeLength) {\n let m: number = data[length - 1];\n if ((m < n - 3) || (m > n)) {\n return null;\n }\n n = m;\n }\n\n let result: ByteArray = new ByteArray();\n result.endian = Endian.LITTLE_ENDIAN;\n for (let i: number = 0; i < length; i++) {\n result.writeUnsignedInt(data[i]);\n }\n if (includeLength) {\n\n result.length = n;\n return result;\n } else {\n return result;\n }\n }\n\n private static ByteArrayToLongArray(data: ByteArray, includeLength: Boolean): any[] {\n let length: number = data.length;\n let n: number = length >> 2;\n if (length % 4 > 0) {\n n++;\n data.length += (4 - (length % 4));\n }\n data.endian = Endian.LITTLE_ENDIAN;\n data.position = 0;\n let result: any[] = [];\n for (let i: number = 0; i < n; i++) {\n result[i] = data.readUnsignedInt();\n }\n if (includeLength) {\n result[n] = length;\n }\n data.length = length;\n return result;\n }\n\n private static encrypt(data: ByteArray, key: ByteArray): ByteArray {\n\n if (data.length == 0) {\n return new ByteArray();\n }\n let v: any[] = this.ByteArrayToLongArray(data, false);\n let k: any[] = [987395361, 3689143219, 1656178945, 2781276885];\n if (k.length < 4) {\n k.length = 4;\n }\n let n: number = v.length - 1;\n let y: number = v[0];\n let z: number = v[1];\n\n let a: number = k[0];\n let b: number = k[1];\n let c: number = k[2];\n let d: number = k[3];\n let delta = 0x9E3779B9;\/* (sqrt(5)-1)\/2*2^32 *\/\n let sum: number = 0;\n\n for (let i: number = 0; i < this.round; i++) {\n sum += delta;\n y += ((z << 4) + a) ^ (z + sum) ^ ((z >>> 5) + b);\n z += ((y << 4) + c) ^ (y + sum) ^ ((y >>> 5) + d);\/* end cycle *\/\n }\n v[0] = y;\n v[1] = z;\n\n return this.LongArrayToByteArray(v, false);\n }\n\n private static decrypt(data: ByteArray, key: ByteArray): ByteArray {\n if (data.length == 0) {\n return new ByteArray();\n }\n let v: any[] = this.ByteArrayToLongArray(data, false);\n let k: any[] = [987395361, 3689143219, 1656178945, 2781276885];\/\/\u5bc6\u94a5\u5199\u6b7b \n if (k.length < 4) {\n k.length = 4;\n }\n let n: number = v.length - 1;\n let y: number = v[0];\n let z: number = v[1];\n\n let a: number = k[0];\n let b: number = k[1];\n let c: number = k[2];\n let d: number = k[3];\n let delta = 0x9E3779B9;\/* (sqrt(5)-1)\/2*2^32 *\/\n let sum: number = 0xE3779B90;\n\n if (this.round == 32) {\n sum = 0xC6EF3720;\/\/delta << 5 \n } else if (this.round == 16) {\n sum = 0xE3779B90;\n }\n\n for (let i: number = 0; i < this.round; i++) {\n z -= ((y << 4) + c) ^ (y + sum) ^ ((y >>> 5) + d);\n y -= ((z << 4) + a) ^ (z + sum) ^ ((z >>> 5) + b);\n sum -= delta;\n }\n v[0] = y;\n v[1] = z;\n return this.LongArrayToByteArray(v, false);\n }\n private static getKey(keyStr: string): any[] {\n let key: string = keyStr;\n let arr: any[] = new Array();\n let res: any[] = new Array();\n let target: any[] = new Array();\n arr = key.split(\" \");\n let curStr: string = \"\";\n let len: number = arr.length;\n for (let i: number = 0; i < arr.length; i++) {\n let newArr: any[] = new Array();\n curStr = arr[i];\n\n for (let j: number = 0; j < 2; j++) {\n let char: string = curStr.charAt(j);\n newArr.push(char);\n }\n target.push(newArr);\n }\n for (let i = 0; i < target.length; i++) {\n let a: number = this.isNumber(target[i][0]);\n let b: number = this.isNumber(target[i][1]);\n let resNum: number = a * 16 + b;\n res.push(resNum);\n }\n return res;\n }\n private static isNumber(char: string): number {\n let arr: any[] = [\"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\"];\n for (let i: number = 0; i < arr.length; i++) {\n if (char == arr[i]) {\n return Number(char);\n break;\n }\n }\n let id: number = 0;\n switch (char) {\n case \"A\":\n id = 10;\n break;\n case \"B\":\n id = 11;\n break;\n case \"C\":\n id = 12;\n break;\n case \"D\":\n id = 13;\n break;\n case \"E\":\n id = 14;\n break;\n case \"F\":\n id = 15;\n break;\n default:\n break;\n }\n return id;\n }\n private static intToHexChar(index: number): string {\n let hex: string[] = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];\n return hex[index];\n }\n private static intToHexString(arr: string[]): string {\n let myStr: string = \"\";\n for (let i: number = 0; i < arr.length; ++i) {\n let t: any = arr[i];\n let a: number = Math.floor(t \/ 16);\n let b: number = Math.floor(t % 16);\n myStr += this.intToHexChar(a);\n myStr += this.intToHexChar(b);\n myStr += \" \";\n }\n return myStr;\n }\n}\n\n\nfunction trace(msg: any): void {\n console.log(msg);\n}\n<\/code><\/pre>\nByteArray\u548cEndian\u53ef\u4ee5\u81ea\u5df1\u5b9e\u73b0\uff0c\u8fd9\u91cc\u4e0d\u5728\u8d58\u8ff0\u3002<\/p>\n\n
code enjoy! 🧐🧐🧐<\/p>\n
\u4f5c\u8005\uff1aindeex<\/p>\n
\u94fe\u63a5\uff1ahttps:\/\/indeex.cc<\/a><\/p>\n\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/p>\n
\n","protected":false},"excerpt":{"rendered":"\u52a0\u5bc6\u7b97\u6cd5\u7528\u5904\u6e10\u6e10\u591a\u4e86\u8d77\u6765\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b80\u5355\u7684\u52a0\u5bc6\u7b97\u6cd5\u5bf9JS\u52a0\u5bc6\/\u89e3\u5bc6\uff0c\u8fd9\u91cc\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5fae\u52a0\u5bc6\u7b97\u6cd5\u3002 \u5faeRead More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[4],"_links":{"self":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/154"}],"collection":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/comments?post=154"}],"version-history":[{"count":1,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/154\/revisions"}],"predecessor-version":[{"id":161,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/154\/revisions\/161"}],"wp:attachment":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/media?parent=154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/categories?post=154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/tags?post=154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}