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var SboxTable = new Array();
SboxTable[0] = new Array(0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05);
SboxTable[1] = new Array(0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99);
SboxTable[2] = new Array(0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62);
SboxTable[3] = new Array(0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6);
SboxTable[4] = new Array(0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8);
SboxTable[5] = new Array(0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35);
SboxTable[6] = new Array(0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87);
SboxTable[7] = new Array(0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e);
SboxTable[8] = new Array(0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1);
SboxTable[9] = new Array(0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3);
SboxTable[10] = new Array(0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f);
SboxTable[11] = new Array(0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51);
SboxTable[12] = new Array(0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8);
SboxTable[13] = new Array(0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0);
SboxTable[14] = new Array(0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84);
SboxTable[15] = new Array(0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48);
var CK = new Array(
0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
);
var FK = new Array(0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc);
function bigxor(a, b) {
return a ^ b
}
function leftshift(a, n, size = 32) {
n = n % size
return (a << n) | (a >>> (size - n))
}
function prefixInteger(str, length) {
return Array(length + 1).join("0").split("").concat(String(str).split(""))
.slice(-length).join("");
}
function sm4Sbox(a) {
var b1 = SboxTable[(a & 0xf0000000) >>> 28][(a & 0x0f000000) >>> 24]
var b2 = SboxTable[(a & 0x00f00000) >>> 20][(a & 0x000f0000) >>> 16]
var b3 = SboxTable[(a & 0x0000f000) >>> 12][(a & 0x00000f00) >>> 8]
var b4 = SboxTable[(a & 0x000000f0) >>> 4][(a & 0x0000000f) >>> 0]
return (b1 << 24) | (b2 << 16) | (b3 << 8) | (b4 << 0)
}
function GET_ULONG_BE(a) {
a = sm4Sbox(a)
return bigxor(bigxor(bigxor(a, leftshift(a, 2)), bigxor(leftshift(a, 10), leftshift(a, 18))), leftshift(a, 24))
}
function PUT_ULONG_BE(b) {
b = sm4Sbox(b)
return bigxor(b, bigxor(leftshift(b, 13), leftshift(b, 23)));
}
function sm4_getkey(MK) {
var K = new Array();
var rk = new Array();
K[0] = bigxor(MK[0], FK[0]);
K[1] = bigxor(MK[1], FK[1]);
K[2] = bigxor(MK[2], FK[2]);
K[3] = bigxor(MK[3], FK[3]);
for (var i = 0; i < 32; i++) {
K[i + 4] = bigxor(K[i], PUT_ULONG_BE(bigxor(bigxor(K[i + 1], K[i + 2]), bigxor(K[i + 3], CK[i]))));
rk[i] = K[i + 4].toString(16);
}
;
return rk;
}
function KJUR_encrypt_sm4(messsage, key, method = "cbc") {
var MK = key;
var X = messsage;
var rk = sm4_getkey(MK);
for (var i = 0; i < 32; i++) {
X[i + 4] = bigxor(X[i], GET_ULONG_BE(bigxor(bigxor(X[i + 1], X[i + 2]), bigxor(X[i + 3], parseInt(rk[i], 16)))))
}
;
var Y = new Array(X[35].toString(16), X[34].toString(16), X[33].toString(16), X[32].toString(16))
return Y;
}
function KJUR_decrypt_sm4(ciphertext, key, method = "cbc") {
var MK = key;
var X = ciphertext;
var frk = sm4_getkey(MK);
var rk = new Array()
for (var i = frk.length - 1; i >= 0; i--) {
rk[frk.length - 1 - i] = frk[i]
}
;
for (var i = 0; i < 32; i++) {
X[i + 4] = bigxor(X[i], GET_ULONG_BE(bigxor(bigxor(X[i + 1], X[i + 2]), bigxor(X[i + 3], parseInt(rk[i], 16)))))
}
;
var Y = new Array(X[35].toString(16), X[34].toString(16), X[33].toString(16), X[32].toString(16))
return Y;
}
ciphertext = new Array(1605062385, -642825121, 2061445208, 1405610911);
ciphertext2 = new Array(1713399267, 1396669315, 1081797168, 605181189)
ciphertext3 = new Array(1824766525, 1196148725, 763423307, 1125925868)
key = new Array(19088743, 2309737967, 4275878552, 1985229328);
console.log(KJUR_decrypt_sm4(ciphertext, key))
console.log(KJUR_decrypt_sm4(ciphertext2, key))
console.log(KJUR_decrypt_sm4(ciphertext3, key))
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