forked from coolaj86/bluecrypt-keypairs.js
280 lines
7.1 KiB
JavaScript
280 lines
7.1 KiB
JavaScript
'use strict';
|
|
(function (exports) {
|
|
'use strict';
|
|
var x509 = exports.x509 = {};
|
|
var ASN1 = exports.ASN1;
|
|
var Enc = exports.Enc;
|
|
|
|
// 1.2.840.10045.3.1.7
|
|
// prime256v1 (ANSI X9.62 named elliptic curve)
|
|
var OBJ_ID_EC = '06 08 2A8648CE3D030107'.replace(/\s+/g, '').toLowerCase();
|
|
// 1.3.132.0.34
|
|
// secp384r1 (SECG (Certicom) named elliptic curve)
|
|
var OBJ_ID_EC_384 = '06 05 2B81040022'.replace(/\s+/g, '').toLowerCase();
|
|
// 1.2.840.10045.2.1
|
|
// ecPublicKey (ANSI X9.62 public key type)
|
|
var OBJ_ID_EC_PUB = '06 07 2A8648CE3D0201'.replace(/\s+/g, '').toLowerCase();
|
|
|
|
x509.parseSec1 = function parseEcOnlyPrivkey(u8, jwk) {
|
|
var index = 7;
|
|
var len = 32;
|
|
var olen = OBJ_ID_EC.length / 2;
|
|
|
|
if ("P-384" === jwk.crv) {
|
|
olen = OBJ_ID_EC_384.length / 2;
|
|
index = 8;
|
|
len = 48;
|
|
}
|
|
if (len !== u8[index - 1]) {
|
|
throw new Error("Unexpected bitlength " + len);
|
|
}
|
|
|
|
// private part is d
|
|
var d = u8.slice(index, index + len);
|
|
// compression bit index
|
|
var ci = index + len + 2 + olen + 2 + 3;
|
|
var c = u8[ci];
|
|
var x, y;
|
|
|
|
if (0x04 === c) {
|
|
y = u8.slice(ci + 1 + len, ci + 1 + len + len);
|
|
} else if (0x02 !== c) {
|
|
throw new Error("not a supported EC private key");
|
|
}
|
|
x = u8.slice(ci + 1, ci + 1 + len);
|
|
|
|
return {
|
|
kty: jwk.kty
|
|
, crv: jwk.crv
|
|
, d: Enc.bufToUrlBase64(d)
|
|
//, dh: Enc.bufToHex(d)
|
|
, x: Enc.bufToUrlBase64(x)
|
|
//, xh: Enc.bufToHex(x)
|
|
, y: Enc.bufToUrlBase64(y)
|
|
//, yh: Enc.bufToHex(y)
|
|
};
|
|
};
|
|
|
|
x509.packPkcs1 = function (jwk) {
|
|
var n = ASN1.UInt(Enc.base64ToHex(jwk.n));
|
|
var e = ASN1.UInt(Enc.base64ToHex(jwk.e));
|
|
|
|
if (!jwk.d) {
|
|
return Enc.hexToBuf(ASN1('30', n, e));
|
|
}
|
|
|
|
return Enc.hexToBuf(ASN1('30'
|
|
, ASN1.UInt('00')
|
|
, n
|
|
, e
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.d))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.p))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.q))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.dp))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.dq))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.qi))
|
|
));
|
|
};
|
|
|
|
x509.parsePkcs8 = function parseEcPkcs8(u8, jwk) {
|
|
var index = 24 + (OBJ_ID_EC.length / 2);
|
|
var len = 32;
|
|
if ("P-384" === jwk.crv) {
|
|
index = 24 + (OBJ_ID_EC_384.length / 2) + 2;
|
|
len = 48;
|
|
}
|
|
|
|
//console.log(index, u8.slice(index));
|
|
if (0x04 !== u8[index]) {
|
|
//console.log(jwk);
|
|
throw new Error("privkey not found");
|
|
}
|
|
var d = u8.slice(index + 2, index + 2 + len);
|
|
var ci = index + 2 + len + 5;
|
|
var xi = ci + 1;
|
|
var x = u8.slice(xi, xi + len);
|
|
var yi = xi + len;
|
|
var y;
|
|
if (0x04 === u8[ci]) {
|
|
y = u8.slice(yi, yi + len);
|
|
} else if (0x02 !== u8[ci]) {
|
|
throw new Error("invalid compression bit (expected 0x04 or 0x02)");
|
|
}
|
|
|
|
return {
|
|
kty: jwk.kty
|
|
, crv: jwk.crv
|
|
, d: Enc.bufToUrlBase64(d)
|
|
//, dh: Enc.bufToHex(d)
|
|
, x: Enc.bufToUrlBase64(x)
|
|
//, xh: Enc.bufToHex(x)
|
|
, y: Enc.bufToUrlBase64(y)
|
|
//, yh: Enc.bufToHex(y)
|
|
};
|
|
};
|
|
|
|
x509.parseSpki = function parsePem(u8, jwk) {
|
|
var ci = 16 + OBJ_ID_EC.length / 2;
|
|
var len = 32;
|
|
|
|
if ("P-384" === jwk.crv) {
|
|
ci = 16 + OBJ_ID_EC_384.length / 2;
|
|
len = 48;
|
|
}
|
|
|
|
var c = u8[ci];
|
|
var xi = ci + 1;
|
|
var x = u8.slice(xi, xi + len);
|
|
var yi = xi + len;
|
|
var y;
|
|
if (0x04 === c) {
|
|
y = u8.slice(yi, yi + len);
|
|
} else if (0x02 !== c) {
|
|
throw new Error("not a supported EC private key");
|
|
}
|
|
|
|
return {
|
|
kty: jwk.kty
|
|
, crv: jwk.crv
|
|
, x: Enc.bufToUrlBase64(x)
|
|
//, xh: Enc.bufToHex(x)
|
|
, y: Enc.bufToUrlBase64(y)
|
|
//, yh: Enc.bufToHex(y)
|
|
};
|
|
};
|
|
x509.parsePkix = x509.parseSpki;
|
|
|
|
x509.packSec1 = function (jwk) {
|
|
var d = Enc.base64ToHex(jwk.d);
|
|
var x = Enc.base64ToHex(jwk.x);
|
|
var y = Enc.base64ToHex(jwk.y);
|
|
var objId = ('P-256' === jwk.crv) ? OBJ_ID_EC : OBJ_ID_EC_384;
|
|
return Enc.hexToBuf(
|
|
ASN1('30'
|
|
, ASN1.UInt('01')
|
|
, ASN1('04', d)
|
|
, ASN1('A0', objId)
|
|
, ASN1('A1', ASN1.BitStr('04' + x + y)))
|
|
);
|
|
};
|
|
/**
|
|
* take a private jwk and creates a der from it
|
|
* @param {*} jwk
|
|
*/
|
|
x509.packPkcs8 = function (jwk) {
|
|
if ('RSA' === jwk.kty) {
|
|
if (!jwk.d) {
|
|
// Public RSA
|
|
return Enc.hexToBuf(ASN1('30'
|
|
, ASN1('30'
|
|
, ASN1('06', '2a864886f70d010101')
|
|
, ASN1('05')
|
|
)
|
|
, ASN1.BitStr(ASN1('30'
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.n))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.e))
|
|
))
|
|
));
|
|
}
|
|
|
|
// Private RSA
|
|
return Enc.hexToBuf(ASN1('30'
|
|
, ASN1.UInt('00')
|
|
, ASN1('30'
|
|
, ASN1('06', '2a864886f70d010101')
|
|
, ASN1('05')
|
|
)
|
|
, ASN1('04'
|
|
, ASN1('30'
|
|
, ASN1.UInt('00')
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.n))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.e))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.d))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.p))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.q))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.dp))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.dq))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.qi))
|
|
)
|
|
)
|
|
));
|
|
}
|
|
|
|
var d = Enc.base64ToHex(jwk.d);
|
|
var x = Enc.base64ToHex(jwk.x);
|
|
var y = Enc.base64ToHex(jwk.y);
|
|
var objId = ('P-256' === jwk.crv) ? OBJ_ID_EC : OBJ_ID_EC_384;
|
|
return Enc.hexToBuf(
|
|
ASN1('30'
|
|
, ASN1.UInt('00')
|
|
, ASN1('30'
|
|
, OBJ_ID_EC_PUB
|
|
, objId
|
|
)
|
|
, ASN1('04'
|
|
, ASN1('30'
|
|
, ASN1.UInt('01')
|
|
, ASN1('04', d)
|
|
, ASN1('A1', ASN1.BitStr('04' + x + y)))))
|
|
);
|
|
};
|
|
x509.packSpki = function (jwk) {
|
|
if (/EC/i.test(jwk.kty)) {
|
|
return x509.packSpkiEc(jwk);
|
|
}
|
|
return x509.packSpkiRsa(jwk);
|
|
};
|
|
x509.packSpkiRsa = function (jwk) {
|
|
if (!jwk.d) {
|
|
// Public RSA
|
|
return Enc.hexToBuf(ASN1('30'
|
|
, ASN1('30'
|
|
, ASN1('06', '2a864886f70d010101')
|
|
, ASN1('05')
|
|
)
|
|
, ASN1.BitStr(ASN1('30'
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.n))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.e))
|
|
))
|
|
));
|
|
}
|
|
|
|
// Private RSA
|
|
return Enc.hexToBuf(ASN1('30'
|
|
, ASN1.UInt('00')
|
|
, ASN1('30'
|
|
, ASN1('06', '2a864886f70d010101')
|
|
, ASN1('05')
|
|
)
|
|
, ASN1('04'
|
|
, ASN1('30'
|
|
, ASN1.UInt('00')
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.n))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.e))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.d))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.p))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.q))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.dp))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.dq))
|
|
, ASN1.UInt(Enc.base64ToHex(jwk.qi))
|
|
)
|
|
)
|
|
));
|
|
};
|
|
x509.packSpkiEc = function (jwk) {
|
|
var x = Enc.base64ToHex(jwk.x);
|
|
var y = Enc.base64ToHex(jwk.y);
|
|
var objId = ('P-256' === jwk.crv) ? OBJ_ID_EC : OBJ_ID_EC_384;
|
|
return Enc.hexToBuf(
|
|
ASN1('30'
|
|
, ASN1('30'
|
|
, OBJ_ID_EC_PUB
|
|
, objId
|
|
)
|
|
, ASN1.BitStr('04' + x + y))
|
|
);
|
|
};
|
|
x509.packPkix = x509.packSpki;
|
|
|
|
}('undefined' !== typeof module ? module.exports : window));
|