我要评论常规是直接安装cryptojs库，但为了减少项目体积，使用这简单的20k文件就ok
一览：
代码中使用的是pkcs7，但我需要的填充方式是zeropadding
所以稍微有修改：
q = (p.pad = {}).zeropadding = {
pad: function (data, blocksize) {
var blocksizebytes = blocksize * 4
data.clamp()
data.sigbytes += blocksizebytes - ((data.sigbytes % blocksizebytes) || blocksizebytes)
},
unpad: function (data) {
// shortcut
var datawords = data.words;
// unpad
var i = data.sigbytes - 1;
for (var i = data.sigbytes - 1; i >= 0; i--) {
if (((datawords[i >>> 2] >>> (24 - (i % 4) * 8)) & 255)) {
data.sigbytes = i + 1;
break;
}
}
}
}
完整代码如下：
var cryptojs = cryptojs || (function (u, p) {
const d = {}
const l = d.lib = {}
const s = function () {}
const t = l.base = {
extend: function (a) {
s.prototype = this
const c = new s()
a && c.mixin(a)
c.hasownproperty('init') || (c.init = function () {
c.$super.init.apply(this, arguments)
})
c.init.prototype = c
c.$super = this
return c
},
create: function () {
const a = this.extend()
a.init.apply(a, arguments)
return a
},
init: function () {},
mixin: function (a) {
for (const c in a) a.hasownproperty(c) && (this[c] = a[c])
a.hasownproperty('tostring') && (this.tostring = a.tostring)
},
clone: function () {
return this.init.prototype.extend(this)
}
}
var r = l.wordarray = t.extend({
init: function (a, c) {
a = this.words = a || []
this.sigbytes = c != p ? c : 4 * a.length
},
tostring: function (a) {
return (a || v).stringify(this)
},
concat: function (a) {
const c = this.words
const e = a.words
const j = this.sigbytes
a = a.sigbytes
this.clamp()
if (j % 4) { for (var k = 0; k < a; k++) c[j + k >>> 2] |= (e[k >>> 2] >>> 24 - 8 * (k % 4) & 255) << 24 - 8 * ((j + k) % 4) } else if (e.length > 65535) { for (k = 0; k < a; k += 4) c[j + k >>> 2] = e[k >>> 2] } else c.push.apply(c, e)
this.sigbytes += a
return this
},
clamp: function () {
const a = this.words
const c = this.sigbytes
a[c >>> 2] &= 4294967295 <<
32 - 8 * (c % 4)
a.length = u.ceil(c / 4)
},
clone: function () {
const a = t.clone.call(this)
a.words = this.words.slice(0)
return a
},
random: function (a) {
for (var c = [], e = 0; e < a; e += 4) c.push(4294967296 * u.random() | 0)
return new r.init(c, a)
}
})
const w = d.enc = {}
var v = w.hex = {
stringify: function (a) {
const c = a.words
a = a.sigbytes
for (var e = [], j = 0; j < a; j++) {
const k = c[j >>> 2] >>> 24 - 8 * (j % 4) & 255
e.push((k >>> 4).tostring(16))
e.push((k & 15).tostring(16))
}
return e.join('')
},
parse: function (a) {
for (var c = a.length, e = [], j = 0; j < c; j += 2) {
e[j >>> 3] |= parseint(a.substr(j,
2), 16) << 24 - 4 * (j % 8)
}
return new r.init(e, c / 2)
}
}
const b = w.latin1 = {
stringify: function (a) {
const c = a.words
a = a.sigbytes
for (var e = [], j = 0; j < a; j++) e.push(string.fromcharcode(c[j >>> 2] >>> 24 - 8 * (j % 4) & 255))
return e.join('')
},
parse: function (a) {
for (var c = a.length, e = [], j = 0; j < c; j++) e[j >>> 2] |= (a.charcodeat(j) & 255) << 24 - 8 * (j % 4)
return new r.init(e, c)
}
}
const x = w.utf8 = {
stringify: function (a) {
try {
return decodeuricomponent(escape(b.stringify(a)))
} catch (c) {
throw error('malformed utf-8 data')
}
},
parse: function (a) {
return b.parse(unescape(encodeuricomponent(a)))
}
}
const q = l.bufferedblockalgorithm = t.extend({
reset: function () {
this._data = new r.init()
this._ndatabytes = 0
},
_append: function (a) {
typeof a == 'string' && (a = x.parse(a))
this._data.concat(a)
this._ndatabytes += a.sigbytes
},
_process: function (a) {
const c = this._data
const e = c.words
let j = c.sigbytes
const k = this.blocksize
var b = j / (4 * k)
var b = a ? u.ceil(b) : u.max((b | 0) - this._minbuffersize, 0)
a = b * k
j = u.min(4 * a, j)
if (a) {
for (var q = 0; q < a; q += k) this._doprocessblock(e, q)
q = e.splice(0, a)
c.sigbytes -= j
}
return new r.init(q, j)
},
clone: function () {
const a = t.clone.call(this)
a._data = this._data.clone()
return a
},
_minbuffersize: 0
})
l.hasher = q.extend({
cfg: t.extend(),
init: function (a) {
this.cfg = this.cfg.extend(a)
this.reset()
},
reset: function () {
q.reset.call(this)
this._doreset()
},
update: function (a) {
this._append(a)
this._process()
return this
},
finalize: function (a) {
a && this._append(a)
return this._dofinalize()
},
blocksize: 16,
_createhelper: function (a) {
return function (b, e) {
return (new a.init(e)).finalize(b)
}
},
_createhmachelper: function (a) {
return function (b, e) {
return (new n.hmac.init(a,
e)).finalize(b)
}
}
})
var n = d.algo = {}
return d
}(math));
(function () {
const u = cryptojs
const p = u.lib.wordarray
u.enc.base64 = {
stringify: function (d) {
let l = d.words
const p = d.sigbytes
const t = this._map
d.clamp()
d = []
for (let r = 0; r < p; r += 3) { for (let w = (l[r >>> 2] >>> 24 - 8 * (r % 4) & 255) << 16 | (l[r + 1 >>> 2] >>> 24 - 8 * ((r + 1) % 4) & 255) << 8 | l[r + 2 >>> 2] >>> 24 - 8 * ((r + 2) % 4) & 255, v = 0; v < 4 && r + 0.75 * v < p; v++) d.push(t.charat(w >>> 6 * (3 - v) & 63)) }
if (l = t.charat(64)) { for (; d.length % 4;) d.push(l) }
return d.join('')
},
parse: function (d) {
let l = d.length
const s = this._map
var t = s.charat(64)
t && (t = d.indexof(t), t != -1 && (l = t))
for (var t = [], r = 0, w = 0; w <
l; w++) {
if (w % 4) {
const v = s.indexof(d.charat(w - 1)) << 2 * (w % 4)
const b = s.indexof(d.charat(w)) >>> 6 - 2 * (w % 4)
t[r >>> 2] |= (v | b) << 24 - 8 * (r % 4)
r++
}
}
return p.create(t, r)
},
_map: 'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/='
}
})();
(function (u) {
function p (b, n, a, c, e, j, k) {
b = b + (n & a | ~n & c) + e + k
return (b << j | b >>> 32 - j) + n
}
function d (b, n, a, c, e, j, k) {
b = b + (n & c | a & ~c) + e + k
return (b << j | b >>> 32 - j) + n
}
function l (b, n, a, c, e, j, k) {
b = b + (n ^ a ^ c) + e + k
return (b << j | b >>> 32 - j) + n
}
function s (b, n, a, c, e, j, k) {
b = b + (a ^ (n | ~c)) + e + k
return (b << j | b >>> 32 - j) + n
}
for (var t = cryptojs, r = t.lib, w = r.wordarray, v = r.hasher, r = t.algo, b = [], x = 0; x < 64; x++) b[x] = 4294967296 * u.abs(u.sin(x + 1)) | 0
r = r.md5 = v.extend({
_doreset: function () {
this._hash = new w.init([1732584193, 4023233417, 2562383102, 271733878])
},
_doprocessblock: function (q, n) {
for (var a = 0; a < 16; a++) {
var c = n + a
var e = q[c]
q[c] = (e << 8 | e >>> 24) & 16711935 | (e << 24 | e >>> 8) & 4278255360
}
var a = this._hash.words
var c = q[n + 0]
var e = q[n + 1]
const j = q[n + 2]
const k = q[n + 3]
const z = q[n + 4]
const r = q[n + 5]
const t = q[n + 6]
const w = q[n + 7]
const v = q[n + 8]
const a = q[n + 9]
const b = q[n + 10]
const c = q[n + 11]
const u = q[n + 12]
const d = q[n + 13]
const e = q[n + 14]
const x = q[n + 15]
var f = a[0]
var m = a[1]
var g = a[2]
var h = a[3]
var f = p(f, m, g, h, c, 7, b[0])
var h = p(h, f, m, g, e, 12, b[1])
var g = p(g, h, f, m, j, 17, b[2])
var m = p(m, g, h, f, k, 22, b[3])
var f = p(f, m, g, h, z, 7, b[4])
var h = p(h, f, m, g, r, 12, b[5])
var g = p(g, h, f, m, t, 17, b[6])
var m = p(m, g, h, f, w, 22, b[7])
var f = p(f, m, g, h, v, 7, b[8])
var h = p(h, f, m, g, a, 12, b[9])
var g = p(g, h, f, m, b, 17, b[10])
var m = p(m, g, h, f, c, 22, b[11])
var f = p(f, m, g, h, u, 7, b[12])
var h = p(h, f, m, g, d, 12, b[13])
var g = p(g, h, f, m, e, 17, b[14])
var m = p(m, g, h, f, x, 22, b[15])
var f = d(f, m, g, h, e, 5, b[16])
var h = d(h, f, m, g, t, 9, b[17])
var g = d(g, h, f, m, c, 14, b[18])
var m = d(m, g, h, f, c, 20, b[19])
var f = d(f, m, g, h, r, 5, b[20])
var h = d(h, f, m, g, b, 9, b[21])
var g = d(g, h, f, m, x, 14, b[22])
var m = d(m, g, h, f, z, 20, b[23])
var f = d(f, m, g, h, a, 5, b[24])
var h = d(h, f, m, g, e, 9, b[25])
var g = d(g, h, f, m, k, 14, b[26])
var m = d(m, g, h, f, v, 20, b[27])
var f = d(f, m, g, h, d, 5, b[28])
var h = d(h, f,
m, g, j, 9, b[29])
var g = d(g, h, f, m, w, 14, b[30])
var m = d(m, g, h, f, u, 20, b[31])
var f = l(f, m, g, h, r, 4, b[32])
var h = l(h, f, m, g, v, 11, b[33])
var g = l(g, h, f, m, c, 16, b[34])
var m = l(m, g, h, f, e, 23, b[35])
var f = l(f, m, g, h, e, 4, b[36])
var h = l(h, f, m, g, z, 11, b[37])
var g = l(g, h, f, m, w, 16, b[38])
var m = l(m, g, h, f, b, 23, b[39])
var f = l(f, m, g, h, d, 4, b[40])
var h = l(h, f, m, g, c, 11, b[41])
var g = l(g, h, f, m, k, 16, b[42])
var m = l(m, g, h, f, t, 23, b[43])
var f = l(f, m, g, h, a, 4, b[44])
var h = l(h, f, m, g, u, 11, b[45])
var g = l(g, h, f, m, x, 16, b[46])
var m = l(m, g, h, f, j, 23, b[47])
var f = s(f, m, g, h, c, 6, b[48])
var h = s(h, f, m, g, w, 10, b[49])
var g = s(g, h, f, m,
e, 15, b[50])
var m = s(m, g, h, f, r, 21, b[51])
var f = s(f, m, g, h, u, 6, b[52])
var h = s(h, f, m, g, k, 10, b[53])
var g = s(g, h, f, m, b, 15, b[54])
var m = s(m, g, h, f, e, 21, b[55])
var f = s(f, m, g, h, v, 6, b[56])
var h = s(h, f, m, g, x, 10, b[57])
var g = s(g, h, f, m, t, 15, b[58])
var m = s(m, g, h, f, d, 21, b[59])
var f = s(f, m, g, h, z, 6, b[60])
var h = s(h, f, m, g, c, 10, b[61])
var g = s(g, h, f, m, j, 15, b[62])
var m = s(m, g, h, f, a, 21, b[63])
a[0] = a[0] + f | 0
a[1] = a[1] + m | 0
a[2] = a[2] + g | 0
a[3] = a[3] + h | 0
},
_dofinalize: function () {
let b = this._data
let n = b.words
let a = 8 * this._ndatabytes
let c = 8 * b.sigbytes
n[c >>> 5] |= 128 << 24 - c % 32
const e = u.floor(a /
4294967296)
n[(c + 64 >>> 9 << 4) + 15] = (e << 8 | e >>> 24) & 16711935 | (e << 24 | e >>> 8) & 4278255360
n[(c + 64 >>> 9 << 4) + 14] = (a << 8 | a >>> 24) & 16711935 | (a << 24 | a >>> 8) & 4278255360
b.sigbytes = 4 * (n.length + 1)
this._process()
b = this._hash
n = b.words
for (a = 0; a < 4; a++) c = n[a], n[a] = (c << 8 | c >>> 24) & 16711935 | (c << 24 | c >>> 8) & 4278255360
return b
},
clone: function () {
const b = v.clone.call(this)
b._hash = this._hash.clone()
return b
}
})
t.md5 = v._createhelper(r)
t.hmacmd5 = v._createhmachelper(r)
})(math);
(function () {
const u = cryptojs
var p = u.lib
const d = p.base
const l = p.wordarray
var p = u.algo
const s = p.evpkdf = d.extend({
cfg: d.extend({
keysize: 4,
hasher: p.md5,
iterations: 1
}),
init: function (d) {
this.cfg = this.cfg.extend(d)
},
compute: function (d, r) {
for (var p = this.cfg, s = p.hasher.create(), b = l.create(), u = b.words, q = p.keysize, p = p.iterations; u.length < q;) {
n && s.update(n)
var n = s.update(d).finalize(r)
s.reset()
for (let a = 1; a < p; a++) n = s.finalize(n), s.reset()
b.concat(n)
}
b.sigbytes = 4 * q
return b
}
})
u.evpkdf = function (d, l, p) {
return s.create(p).compute(d,
l)
}
})()
cryptojs.lib.cipher || (function (u) {
var p = cryptojs
const d = p.lib
const l = d.base
const s = d.wordarray
const t = d.bufferedblockalgorithm
const r = p.enc.base64
const w = p.algo.evpkdf
const v = d.cipher = t.extend({
cfg: l.extend(),
createencryptor: function (e, a) {
return this.create(this._enc_xform_mode, e, a)
},
createdecryptor: function (e, a) {
return this.create(this._dec_xform_mode, e, a)
},
init: function (e, a, b) {
this.cfg = this.cfg.extend(b)
this._xformmode = e
this._key = a
this.reset()
},
reset: function () {
t.reset.call(this)
this._doreset()
},
process: function (e) {
this._append(e)
return this._process()
},
finalize: function (e) {
e && this._append(e)
return this._dofinalize()
},
keysize: 4,
ivsize: 4,
_enc_xform_mode: 1,
_dec_xform_mode: 2,
_createhelper: function (e) {
return {
encrypt: function (b, k, d) {
return (typeof k == 'string' ? c : a).encrypt(e, b, k, d)
},
decrypt: function (b, k, d) {
return (typeof k == 'string' ? c : a).decrypt(e, b, k, d)
}
}
}
})
d.streamcipher = v.extend({
_dofinalize: function () {
return this._process(!0)
},
blocksize: 1
})
var b = p.mode = {}
const x = function (e, a, b) {
let c = this._iv
c ? this._iv = u : c = this._prevblock
for (let d = 0; d < b; d++) {
e[a + d] ^=
c[d]
}
}
let q = (d.blockciphermode = l.extend({
createencryptor: function (e, a) {
return this.encryptor.create(e, a)
},
createdecryptor: function (e, a) {
return this.decryptor.create(e, a)
},
init: function (e, a) {
this._cipher = e
this._iv = a
}
})).extend()
q.encryptor = q.extend({
processblock: function (e, a) {
const b = this._cipher
const c = b.blocksize
x.call(this, e, a, c)
b.encryptblock(e, a)
this._prevblock = e.slice(a, a + c)
}
})
q.decryptor = q.extend({
processblock: function (e, a) {
const b = this._cipher
const c = b.blocksize
const d = e.slice(a, a + c)
b.decryptblock(e, a)
x.call(this,
e, a, c)
this._prevblock = d
}
})
b = b.cbc = q
q = (p.pad = {}).pkcs7 = {
pad: function (a, b) {
for (var c = 4 * b, c = c - a.sigbytes % c, d = c << 24 | c << 16 | c << 8 | c, l = [], n = 0; n < c; n += 4) l.push(d)
c = s.create(l, c)
a.concat(c)
},
unpad: function (a) {
a.sigbytes -= a.words[a.sigbytes - 1 >>> 2] & 255
}
}
d.blockcipher = v.extend({
cfg: v.cfg.extend({
mode: b,
padding: q
}),
reset: function () {
v.reset.call(this)
var a = this.cfg
const b = a.iv
var a = a.mode
if (this._xformmode == this._enc_xform_mode) var c = a.createencryptor
else c = a.createdecryptor, this._minbuffersize = 1
this._mode = c.call(a,
this, b && b.words)
},
_doprocessblock: function (a, b) {
this._mode.processblock(a, b)
},
_dofinalize: function () {
const a = this.cfg.padding
if (this._xformmode == this._enc_xform_mode) {
a.pad(this._data, this.blocksize)
var b = this._process(!0)
} else b = this._process(!0), a.unpad(b)
return b
},
blocksize: 4
})
const n = d.cipherparams = l.extend({
init: function (a) {
this.mixin(a)
},
tostring: function (a) {
return (a || this.formatter).stringify(this)
}
})
var b = (p.format = {}).openssl = {
stringify: function (a) {
const b = a.ciphertext
a = a.salt
return (a
? s.create([1398893684,
1701076831
]).concat(a).concat(b)
: b).tostring(r)
},
parse: function (a) {
a = r.parse(a)
const b = a.words
if (b[0] == 1398893684 && b[1] == 1701076831) {
var c = s.create(b.slice(2, 4))
b.splice(0, 4)
a.sigbytes -= 16
}
return n.create({
ciphertext: a,
salt: c
})
}
}
var a = d.serializablecipher = l.extend({
cfg: l.extend({
format: b
}),
encrypt: function (a, b, c, d) {
d = this.cfg.extend(d)
let l = a.createencryptor(c, d)
b = l.finalize(b)
l = l.cfg
return n.create({
ciphertext: b,
key: c,
iv: l.iv,
algorithm: a,
mode: l.mode,
padding: l.padding,
blocksize: a.blocksize,
formatter: d.format
})
},
decrypt: function (a, b, c, d) {
d = this.cfg.extend(d)
b = this._parse(b, d.format)
return a.createdecryptor(c, d).finalize(b.ciphertext)
},
_parse: function (a, b) {
return typeof a == 'string' ? b.parse(a, this) : a
}
})
var p = (p.kdf = {}).openssl = {
execute: function (a, b, c, d) {
d || (d = s.random(8))
a = w.create({
keysize: b + c
}).compute(a, d)
c = s.create(a.words.slice(b), 4 * c)
a.sigbytes = 4 * b
return n.create({
key: a,
iv: c,
salt: d
})
}
}
var c = d.passwordbasedcipher = a.extend({
cfg: a.cfg.extend({
kdf: p
}),
encrypt: function (b, c, d, l) {
l = this.cfg.extend(l)
d = l.kdf.execute(d,
b.keysize, b.ivsize)
l.iv = d.iv
b = a.encrypt.call(this, b, c, d.key, l)
b.mixin(d)
return b
},
decrypt: function (b, c, d, l) {
l = this.cfg.extend(l)
c = this._parse(c, l.format)
d = l.kdf.execute(d, b.keysize, b.ivsize, c.salt)
l.iv = d.iv
return a.decrypt.call(this, b, c, d.key, l)
}
})
}());
(function () {
for (var u = cryptojs, p = u.lib.blockcipher, d = u.algo, l = [], s = [], t = [], r = [], w = [], v = [], b = [], x = [], q = [], n = [], a = [], c = 0; c < 256; c++) a[c] = c < 128 ? c << 1 : c << 1 ^ 283
for (var e = 0, j = 0, c = 0; c < 256; c++) {
var k = j ^ j << 1 ^ j << 2 ^ j << 3 ^ j << 4
var k = k >>> 8 ^ k & 255 ^ 99
l[e] = k
s[k] = e
const z = a[e]
const f = a[z]
const g = a[f]
let y = 257 * a[k] ^ 16843008 * k
t[e] = y << 24 | y >>> 8
r[e] = y << 16 | y >>> 16
w[e] = y << 8 | y >>> 24
v[e] = y
y = 16843009 * g ^ 65537 * f ^ 257 * z ^ 16843008 * e
b[k] = y << 24 | y >>> 8
x[k] = y << 16 | y >>> 16
q[k] = y << 8 | y >>> 24
n[k] = y
e ? (e = z ^ a[a[a[g ^ z]]], j ^= a[a[j]]) : e = j = 1
}
const h = [0, 1, 2, 4, 8,
16, 32, 64, 128, 27, 54
]
var d = d.aes = p.extend({
_doreset: function () {
for (var a = this._key, c = a.words, d = a.sigbytes / 4, a = 4 * ((this._nrounds = d + 6) + 1), e = this._keyschedule = [], j = 0; j < a; j++) {
if (j < d) e[j] = c[j]
else {
var k = e[j - 1]
j % d ? d > 6 && j % d == 4 && (k = l[k >>> 24] << 24 | l[k >>> 16 & 255] << 16 | l[k >>> 8 & 255] << 8 | l[k & 255]) : (k = k << 8 | k >>> 24, k = l[k >>> 24] << 24 | l[k >>> 16 & 255] << 16 | l[k >>> 8 & 255] << 8 | l[k & 255], k ^= h[j / d | 0] << 24)
e[j] = e[j - d] ^ k
}
}
c = this._invkeyschedule = []
for (d = 0; d < a; d++) {
j = a - d, k = d % 4 ? e[j] : e[j - 4], c[d] = d < 4 || j <= 4
? k
: b[l[k >>> 24]] ^ x[l[k >>> 16 & 255]] ^ q[l[k >>>
8 & 255]] ^ n[l[k & 255]]
}
},
encryptblock: function (a, b) {
this._docryptblock(a, b, this._keyschedule, t, r, w, v, l)
},
decryptblock: function (a, c) {
let d = a[c + 1]
a[c + 1] = a[c + 3]
a[c + 3] = d
this._docryptblock(a, c, this._invkeyschedule, b, x, q, n, s)
d = a[c + 1]
a[c + 1] = a[c + 3]
a[c + 3] = d
},
_docryptblock: function (a, b, c, d, e, j, l, f) {
for (var m = this._nrounds, g = a[b] ^ c[0], h = a[b + 1] ^ c[1], k = a[b + 2] ^ c[2], n = a[b + 3] ^ c[3], p = 4, r = 1; r < m; r++) {
var q = d[g >>> 24] ^ e[h >>> 16 & 255] ^ j[k >>> 8 & 255] ^ l[n & 255] ^ c[p++]
var s = d[h >>> 24] ^ e[k >>> 16 & 255] ^ j[n >>> 8 & 255] ^ l[g & 255] ^ c[p++]
var t =
d[k >>> 24] ^ e[n >>> 16 & 255] ^ j[g >>> 8 & 255] ^ l[h & 255] ^ c[p++]
var n = d[n >>> 24] ^ e[g >>> 16 & 255] ^ j[h >>> 8 & 255] ^ l[k & 255] ^ c[p++]
var g = q
var h = s
var k = t
}
q = (f[g >>> 24] << 24 | f[h >>> 16 & 255] << 16 | f[k >>> 8 & 255] << 8 | f[n & 255]) ^ c[p++]
s = (f[h >>> 24] << 24 | f[k >>> 16 & 255] << 16 | f[n >>> 8 & 255] << 8 | f[g & 255]) ^ c[p++]
t = (f[k >>> 24] << 24 | f[n >>> 16 & 255] << 16 | f[g >>> 8 & 255] << 8 | f[h & 255]) ^ c[p++]
n = (f[n >>> 24] << 24 | f[g >>> 16 & 255] << 16 | f[h >>> 8 & 255] << 8 | f[k & 255]) ^ c[p++]
a[b] = q
a[b + 1] = s
a[b + 2] = t
a[b + 3] = n
},
keysize: 8
})
u.aes = p._createhelper(d)
})()
// module.exports = cryptojs; // vue2使用
export default cryptojs // vue3使用
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