bluecrypt-keypairs.js/lib/bluecrypt-encoding.js

136 lines
2.8 KiB
JavaScript
Raw Normal View History

2019-04-26 22:36:19 +00:00
(function (exports) {
var Enc = exports.BluecryptEncoding = {};
Enc.bufToBin = function (buf) {
var bin = '';
// cannot use .map() because Uint8Array would return only 0s
buf.forEach(function (ch) {
bin += String.fromCharCode(ch);
});
return bin;
};
Enc.bufToHex = function toHex(u8) {
var hex = [];
var i, h;
var len = (u8.byteLength || u8.length);
for (i = 0; i < len; i += 1) {
h = u8[i].toString(16);
if (h.length % 2) { h = '0' + h; }
hex.push(h);
}
return hex.join('').toLowerCase();
};
Enc.urlBase64ToBase64 = function urlsafeBase64ToBase64(str) {
var r = str % 4;
if (2 === r) {
str += '==';
} else if (3 === r) {
str += '=';
}
return str.replace(/-/g, '+').replace(/_/g, '/');
};
Enc.base64ToBuf = function (b64) {
return Enc.binToBuf(atob(b64));
};
Enc.binToBuf = function (bin) {
var arr = bin.split('').map(function (ch) {
return ch.charCodeAt(0);
});
return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
};
Enc.bufToHex = function (u8) {
var hex = [];
var i, h;
var len = (u8.byteLength || u8.length);
for (i = 0; i < len; i += 1) {
h = u8[i].toString(16);
if (h.length % 2) { h = '0' + h; }
hex.push(h);
}
return hex.join('').toLowerCase();
};
Enc.numToHex = function (d) {
d = d.toString(16);
if (d.length % 2) {
return '0' + d;
}
return d;
};
Enc.bufToUrlBase64 = function (u8) {
return Enc.bufToBase64(u8)
.replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '');
};
Enc.bufToBase64 = function (u8) {
var bin = '';
u8.forEach(function (i) {
bin += String.fromCharCode(i);
});
return btoa(bin);
};
Enc.hexToBuf = function (hex) {
var arr = [];
hex.match(/.{2}/g).forEach(function (h) {
arr.push(parseInt(h, 16));
});
return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
};
Enc.numToHex = function (d) {
d = d.toString(16);
if (d.length % 2) {
return '0' + d;
}
return d;
};
//
// JWK to SSH (tested working)
//
Enc.base64ToHex = function (b64) {
var bin = atob(Enc.urlBase64ToBase64(b64));
return Enc.binToHex(bin);
};
Enc.binToHex = function (bin) {
return bin.split('').map(function (ch) {
var h = ch.charCodeAt(0).toString(16);
if (h.length % 2) { h = '0' + h; }
return h;
}).join('');
};
Enc.hexToBase64 = function (hex) {
return btoa(Enc.hexToBin(hex));
};
Enc.hexToBin = function (hex) {
return hex.match(/.{2}/g).map(function (h) {
return String.fromCharCode(parseInt(h, 16));
}).join('');
};
Enc.urlBase64ToBase64 = function urlsafeBase64ToBase64(str) {
var r = str % 4;
if (2 === r) {
str += '==';
} else if (3 === r) {
str += '=';
}
return str.replace(/-/g, '+').replace(/_/g, '/');
};
}('undefined' !== typeof exports ? module.exports : window ));