648 lines
17 KiB
JavaScript
648 lines
17 KiB
JavaScript
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function cvt_hex8(val)
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{
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var vh = (val >>> 4) & 0x0f;
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return to16(vh) + to16(val & 0x0f);
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}
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function cvt_hex32(val)
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{
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var str = "";
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var i;
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var v;
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for (i = 7; i >= 0; i--)
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{
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v = (val >>> (i * 4)) & 0x0f;
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// str += v.toString(16);
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str += to16(v);
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}
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return str;
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}
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function _to16(num)
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{
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switch (num)
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{
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case 0:
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return "0"
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case 1:
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return "1"
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case 2:
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return "2"
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case 3:
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return "3"
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case 4:
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return "4"
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case 5:
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return "5"
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case 6:
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return "6"
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case 7:
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return "7"
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case 8:
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return "8"
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case 9:
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return "9"
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case 10:
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return "a"
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case 11:
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return "b"
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case 12:
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return "c"
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case 13:
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return "d"
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case 14:
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return "e"
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case 15:
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return "f"
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}
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}
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function to16(num)
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{
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num = num;
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if (!isNaN(num))
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{
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var result = "";
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while (num >= 16)
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{
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result = _to16(num % 16) + result;
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num = parseInt(num / 16);
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}
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result = _to16(num % 16) + result;
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return result;
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}
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else
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{
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return num.toString(16);
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}
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}
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function cvt_byte(str)
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{
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var val1 = str.charCodeAt(0);
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if (val1 >= 48 && val1 <= 57)
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val1 -= 48;
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else if (val1 >= 65 && val1 <= 70)
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val1 -= 55;
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else if (val1 >= 97 && val1 <= 102)
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val1 -= 87;
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else
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{
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window.alert(str.charAt(1) + " is not a valid hex digit");
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return -1;
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}
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var val2 = str.charCodeAt(1);
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if (val2 >= 48 && val2 <= 57)
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val2 -= 48;
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else if (val2 >= 65 && val2 <= 70)
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val2 -= 55;
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else if (val2 >= 97 && val2 <= 102)
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val2 -= 87;
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else
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{
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window.alert(str.charAt(2) + " is not a valid hex digit");
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return -1;
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}
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return val1 * 16 + val2;
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}
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var S_enc = new Array(0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30,
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0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa,
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0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7,
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0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71,
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0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07,
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0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b,
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0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53,
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0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a,
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0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45,
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0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92,
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0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd,
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0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64,
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0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46,
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0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49,
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0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7,
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0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65,
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0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8,
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0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48,
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0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1,
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0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce,
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0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41,
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0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16);
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var S_dec = new Array(0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf,
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0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b,
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0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54,
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0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42,
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0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76,
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0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86,
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0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c,
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0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7,
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0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7,
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0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca,
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0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a,
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0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0,
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0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2,
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0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d,
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0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc,
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0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78,
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0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1,
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0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19,
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0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0,
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0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83,
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0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1,
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0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d);
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var I00 = 0;
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var I01 = 1;
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var I02 = 2;
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var I03 = 3;
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var I10 = 4;
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var I11 = 5;
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var I12 = 6;
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var I13 = 7;
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var I20 = 8;
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var I21 = 9;
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var I22 = 10;
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var I23 = 11;
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var I30 = 12;
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var I31 = 13;
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var I32 = 14;
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var I33 = 15;
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function I(x, y)
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{
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return (x * 4) + y;
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}
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function remove_spaces(instr)
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{
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var i;
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var outstr = "";
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for (i = 0; i < instr.length; i++)
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if (instr.charAt(i) != " ")
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outstr += instr.charAt(i);
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return outstr;
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}
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function aes_mul(a, b)
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{
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var res = 0;
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while (a > 0)
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{
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if ((a & 1) != 0) res = res ^ b;
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a >>>= 1;
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b <<= 1;
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}
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var hbit = 0x10000;
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var modulus = 0x11b00;
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while (hbit >= 0x100)
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{
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if ((res & hbit) != 0)
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res ^= modulus;
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hbit >>= 1;
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modulus >>= 1;
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}
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return res;
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}
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function SubWord(word_ary)
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{
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var i;
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for (i = 0; i < 16; i++)
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{
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word_ary[i] = S_enc[word_ary[i]];
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}
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return word_ary;
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}
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function RotWord(word_ary)
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{
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return new Array(word_ary[1], word_ary[2], word_ary[3], word_ary[0]);
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}
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function Rcon(exp)
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{
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var val = 2;
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var result = 1;
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exp--;
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while (exp > 0)
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{
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if ((exp & 1) != 0) result = aes_mul(result, val);
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val = aes_mul(val, val);
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exp >>= 1;
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}
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return result;
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}
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function key_expand(key)
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{
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var temp = new Array(4);
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var i, j;
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var Nb = 4;
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var Nk = key.length / Nb;
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var Nr = Nk + 6;
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var w = new Array(Nb * (Nr + 1));
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for (i = 0; i < key.length; i++)
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{
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w[i] = key[i];
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}
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i = Nk;
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while (i < Nb * (Nr + 1))
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{
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for (j = 0; j < 4; j++)
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temp[j] = w[(i - 1) * 4 + j];
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if (i % Nk == 0)
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{
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temp = RotWord(temp);
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temp = SubWord(temp);
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temp[0] ^= Rcon(i / Nk);
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}
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else if ((Nk > 6) && (i % Nk == 4))
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{
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temp = SubWord(temp);
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}
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for (j = 0; j < 4; j++)
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{
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w[i * 4 + j] = w[(i - Nk) * 4 + j] ^ temp[j];
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}
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i++;
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}
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return w;
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}
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function SubBytes(state, Sbox)
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{
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var i;
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for (i = 0; i < 16; i++)
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state[i] = Sbox[state[i]];
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return state;
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}
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function ShiftRows(state)
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{
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var t0, t1, t2, t3;
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t0 = state[I10];
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t1 = state[I11];
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t2 = state[I12];
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t3 = state[I13];
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state[I10] = t1;
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state[I11] = t2;
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state[I12] = t3;
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state[I13] = t0;
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t0 = state[I20];
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t1 = state[I21];
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t2 = state[I22];
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t3 = state[I23];
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state[I20] = t2;
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state[I21] = t3;
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state[I22] = t0;
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state[I23] = t1;
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t0 = state[I30];
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t1 = state[I31];
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t2 = state[I32];
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t3 = state[I33];
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state[I30] = t3;
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state[I31] = t0;
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state[I32] = t1;
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state[I33] = t2;
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return state;
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}
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function InvShiftRows(state)
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{
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var t0, t1, t2, t3;
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t0 = state[I10];
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t1 = state[I11];
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t2 = state[I12];
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t3 = state[I13];
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state[I10] = t3;
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state[I11] = t0;
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state[I12] = t1;
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state[I13] = t2;
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t0 = state[I20];
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t1 = state[I21];
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t2 = state[I22];
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t3 = state[I23];
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state[I20] = t2;
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state[I21] = t3;
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state[I22] = t0;
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state[I23] = t1;
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t0 = state[I30];
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t1 = state[I31];
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t2 = state[I32];
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t3 = state[I33];
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state[I30] = t1;
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state[I31] = t2;
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state[I32] = t3;
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state[I33] = t0;
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return state;
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}
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function MixColumns(state)
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{
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var col;
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var c0, c1, c2, c3;
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for (col = 0; col < 4; col++)
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{
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c0 = state[I(0, col)];
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c1 = state[I(1, col)];
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c2 = state[I(2, col)];
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c3 = state[I(3, col)];
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state[I(0, col)] = aes_mul(2, c0) ^ aes_mul(3, c1) ^ c2 ^ c3;
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state[I(1, col)] = c0 ^ aes_mul(2, c1) ^ aes_mul(3, c2) ^ c3;
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state[I(2, col)] = c0 ^ c1 ^ aes_mul(2, c2) ^ aes_mul(3, c3);
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state[I(3, col)] = aes_mul(3, c0) ^ c1 ^ c2 ^ aes_mul(2, c3);
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}
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return state;
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}
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function InvMixColumns(state)
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{
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var col;
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var c0, c1, c2, c3;
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for (col = 0; col < 4; col++)
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{
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c0 = state[I(0, col)];
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c1 = state[I(1, col)];
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c2 = state[I(2, col)];
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c3 = state[I(3, col)];
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state[I(0, col)] = aes_mul(0x0e, c0) ^ aes_mul(0x0b, c1)
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^ aes_mul(0x0d, c2) ^ aes_mul(0x09, c3);
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state[I(1, col)] = aes_mul(0x09, c0) ^ aes_mul(0x0e, c1)
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^ aes_mul(0x0b, c2) ^ aes_mul(0x0d, c3);
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state[I(2, col)] = aes_mul(0x0d, c0) ^ aes_mul(0x09, c1)
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^ aes_mul(0x0e, c2) ^ aes_mul(0x0b, c3);
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state[I(3, col)] = aes_mul(0x0b, c0) ^ aes_mul(0x0d, c1)
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^ aes_mul(0x09, c2) ^ aes_mul(0x0e, c3);
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}
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return state;
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}
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function AddRoundKey(state, w, base)
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{
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var col;
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for (col = 0; col < 4; col++)
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{
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state[I(0, col)] ^= w[base + col * 4];
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state[I(1, col)] ^= w[base + col * 4 + 1];
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state[I(2, col)] ^= w[base + col * 4 + 2];
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state[I(3, col)] ^= w[base + col * 4 + 3];
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}
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return state;
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}
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function transpose(msg)
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{
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var row, col;
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var state = new Array(16);
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for (row = 0; row < 4; row++)
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{
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for (col = 0; col < 4; col++)
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{
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state[I(row, col)] = msg[I(col, row)];
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}
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}
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return state;
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}
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var AES_output = new Array(16);
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function aes_encrypt(key, msg)
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{
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var w = new Array(44);
|
|
var state = new Array(16);
|
|
var round;
|
|
if (msg[0] < 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (key[0] < 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
w = key_expand(key);
|
|
var Nk = key.length / 4;
|
|
var Nr = Nk + 6;
|
|
|
|
state = transpose(msg);
|
|
state = AddRoundKey(state, w, 0);
|
|
for (round = 1; round < Nr; round++)
|
|
{
|
|
state = SubBytes(state, S_enc);
|
|
state = ShiftRows(state);
|
|
state = MixColumns(state);
|
|
|
|
state = AddRoundKey(state, w, round * 4 * 4);
|
|
}
|
|
|
|
SubBytes(state, S_enc);
|
|
ShiftRows(state);
|
|
AddRoundKey(state, w, Nr * 4 * 4);
|
|
|
|
AES_output = transpose(state);
|
|
var str = cvt_hex8(AES_output[0]);
|
|
for ( var i = 1; i < 16; i++)
|
|
{
|
|
str += cvt_hex8(AES_output[i]);
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
function aes_decrypt(key, msg)
|
|
{
|
|
var w = new Array(44);
|
|
var state = new Array(16);
|
|
var round;
|
|
|
|
msg = hexStr2Byte(msg);
|
|
if (msg[0] < 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (key[0] < 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
w = key_expand(key);
|
|
|
|
var Nk = key.length / 4;
|
|
var Nr = Nk + 6;
|
|
|
|
state = transpose(msg);
|
|
state = AddRoundKey(state, w, Nr * 4 * 4);
|
|
for (round = Nr - 1; round >= 1; round--)
|
|
{
|
|
state = InvShiftRows(state);
|
|
state = SubBytes(state, S_dec);
|
|
|
|
state = AddRoundKey(state, w, round * 4 * 4);
|
|
state = InvMixColumns(state);
|
|
}
|
|
|
|
InvShiftRows(state);
|
|
SubBytes(state, S_dec);
|
|
AddRoundKey(state, w, 0);
|
|
|
|
AES_output = transpose(state);
|
|
|
|
var str = "";
|
|
for ( var i = 0; i < 16; i++)
|
|
{
|
|
str += String.fromCharCode(AES_output[i]);
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
function hexStr2Byte(str)
|
|
{
|
|
var dbyte = new Array(str.length / 2);
|
|
for ( var i = 0; i < str.length / 2; i++)
|
|
{
|
|
dbyte[i] = cvt_byte(str.substr(i * 2, 2));
|
|
if (dbyte[i] < 0)
|
|
{
|
|
dbyte[0] = -1;
|
|
return dbyte;
|
|
}
|
|
}
|
|
|
|
return dbyte;
|
|
}
|
|
|
|
function str2HexByte(str)
|
|
{
|
|
var dbyte = new Array(16);
|
|
if (str.length > 16)
|
|
{
|
|
dbyte = new Array(str.length);
|
|
}
|
|
var i;
|
|
|
|
if (str.length >= 16)
|
|
{
|
|
for (i = 0; i < str.length; i++)
|
|
{
|
|
dbyte[i] = str.charCodeAt(i);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; i < str.length; i++)
|
|
{
|
|
dbyte[i] = str.charCodeAt(i);
|
|
}
|
|
for (i = str.length; i < 16; i++)
|
|
{
|
|
dbyte[i] = 0;
|
|
}
|
|
}
|
|
|
|
return dbyte;
|
|
}
|
|
|
|
function hexByte2HexStr(arrBytes)
|
|
{
|
|
var str = cvt_hex8(arrBytes[0]);
|
|
for ( var i = 1; i < arrBytes.length; i++)
|
|
{
|
|
str += " " + cvt_hex8(arrBytes[i]);
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
function hexByte2Str(arrBytes)
|
|
{
|
|
var str = "";
|
|
for ( var i = 0; i < arrBytes.length; i++)
|
|
{
|
|
str += String.fromCharCode(arrBytes[i]);
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
export function encrypt(key, msg)
|
|
{
|
|
var keyBytes = hexStr2Byte(key);
|
|
var msgBytes = str2HexByte(msg);
|
|
var str = "";
|
|
var count = msgBytes.length / 16;
|
|
for ( var i = 0; i < count; i++)
|
|
{
|
|
str += aes_encrypt(keyBytes, msgBytes.slice(i * 16, (i + 1) * 16));
|
|
}
|
|
return remove_spaces(str);
|
|
};
|
|
|
|
export function decrypt(key, msg)
|
|
{
|
|
var keyBytes = hexStr2Byte(key);
|
|
msg = remove_spaces(msg);
|
|
var str = "";
|
|
var count = msg.length / 32;
|
|
for ( var i = 0; i < count; i++)
|
|
{
|
|
str += aes_decrypt(keyBytes, msg.slice(i * 32, (i + 1) * 32));
|
|
}
|
|
|
|
var i;
|
|
for (i = str.length - 1; i >= 0; i--)
|
|
{
|
|
if ((str.charCodeAt(i) > 31) && (str.charCodeAt(i) < 128))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
return str.substring(0, i + 1);
|
|
}; |