blueimp 的 JavaScript MD5 的创建 MD5 核心功能是 binlMD5 这个 function 吗?它不是线性的吗?
資深大佬 : quxinna 0
function binlMD5(x, len) { /* append padding */ x[len >> 5] |= 0x80 << len % 32 x[(((len + 64) >>> 9) << 4) + 14] = len
var i var olda var oldb var oldc var oldd var a = 1732584193 var b = -271733879 var c = -1732584194 var d = 271733878 for (i = 0; i < x.length; i += 16) { olda = a oldb = b oldc = c oldd = d a = md5ff(a, b, c, d, x[i], 7, -680876936) d = md5ff(d, a, b, c, x[i + 1], 12, -389564586) c = md5ff(c, d, a, b, x[i + 2], 17, 606105819) b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330) a = md5ff(a, b, c, d, x[i + 4], 7, -176418897) d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426) c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341) b = md5ff(b, c, d, a, x[i + 7], 22, -45705983) a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416) d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417) c = md5ff(c, d, a, b, x[i + 10], 17, -42063) b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162) a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682) d = md5ff(d, a, b, c, x[i + 13], 12, -40341101) c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290) b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329) a = md5gg(a, b, c, d, x[i + 1], 5, -165796510) d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632) c = md5gg(c, d, a, b, x[i + 11], 14, 643717713) b = md5gg(b, c, d, a, x[i], 20, -373897302) a = md5gg(a, b, c, d, x[i + 5], 5, -701558691) d = md5gg(d, a, b, c, x[i + 10], 9, 38016083) c = md5gg(c, d, a, b, x[i + 15], 14, -660478335) b = md5gg(b, c, d, a, x[i + 4], 20, -405537848) a = md5gg(a, b, c, d, x[i + 9], 5, 568446438) d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690) c = md5gg(c, d, a, b, x[i + 3], 14, -187363961) b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501) a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467) d = md5gg(d, a, b, c, x[i + 2], 9, -51403784) c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473) b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734) a = md5hh(a, b, c, d, x[i + 5], 4, -378558) d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463) c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562) b = md5hh(b, c, d, a, x[i + 14], 23, -35309556) a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060) d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353) c = md5hh(c, d, a, b, x[i + 7], 16, -155497632) b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640) a = md5hh(a, b, c, d, x[i + 13], 4, 681279174) d = md5hh(d, a, b, c, x[i], 11, -358537222) c = md5hh(c, d, a, b, x[i + 3], 16, -722521979) b = md5hh(b, c, d, a, x[i + 6], 23, 76029189) a = md5hh(a, b, c, d, x[i + 9], 4, -640364487) d = md5hh(d, a, b, c, x[i + 12], 11, -421815835) c = md5hh(c, d, a, b, x[i + 15], 16, 530742520) b = md5hh(b, c, d, a, x[i + 2], 23, -995338651) a = md5ii(a, b, c, d, x[i], 6, -198630844) d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415) c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905) b = md5ii(b, c, d, a, x[i + 5], 21, -57434055) a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571) d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606) c = md5ii(c, d, a, b, x[i + 10], 15, -1051523) b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799) a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359) d = md5ii(d, a, b, c, x[i + 15], 10, -30611744) c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380) b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649) a = md5ii(a, b, c, d, x[i + 4], 6, -145523070) d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379) c = md5ii(c, d, a, b, x[i + 2], 15, 718787259) b = md5ii(b, c, d, a, x[i + 9], 21, -343485551) a = safeAdd(a, olda) b = safeAdd(b, oldb) c = safeAdd(c, oldc) d = safeAdd(d, oldd) } return [a, b, c, d]
}
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