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JS: Seed from passphrase support.

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This commit is contained in:
Stefan Thomas
2013-02-08 03:14:49 +01:00
parent dd43969183
commit c886ae843e
1 changed files with 31 additions and 10 deletions
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41
src/js/seed.js
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@@ -27,19 +27,37 @@ Seed.prototype.constructor = Seed;
// value = NaN on error.
// One day this will support rfc1751 too.
Seed.prototype.parse_json = function (j) {
if ('string' !== typeof j) {
this._value = NaN;
if ('string' === typeof j) {
if (!j.length) {
this._value = NaN;
// XXX Should actually always try and continue if it failed.
} else if (j[0] === "s") {
this._value = Base.decode_check(Base.VER_FAMILY_SEED, j);
} else if (j.length === 32) {
this._value = this.parse_hex(j);
// XXX Should also try 1751
} else {
this.parse_passphrase(j);
}
} else if (Array.isArray(j) && 16 === j.length) {
this._value = new BigInteger(utils.stringToArray(j), 128);
} else {
this._value = NaN;
}
else if (j[0] === "s") {
this._value = Base.decode_check(Base.VER_FAMILY_SEED, j);
}
else if (16 === j.length) {
this._value = new BigInteger(utils.stringToArray(j), 128);
}
else {
this._value = NaN;
return this;
};
Seed.prototype.parse_passphrase = function (j) {
if ("string" !== typeof j) {
throw new Error("Passphrase must be a string");
}
var hash = sjcl.hash.sha512.hash(sjcl.codec.utf8String.toBits(j));
var bits = sjcl.bitArray.bitSlice(hash, 0, 128);
this.parse_bits(bits);
return this;
};
@@ -68,6 +86,9 @@ function SHA256_RIPEMD160(bits) {
}
Seed.prototype.get_key = function (account_id) {
if (!this.is_valid()) {
throw new Error("Cannot generate keys from invalid seed!");
}
// XXX Should loop over keys until we find the right one
var curve = this._curve;