fromSeed static method
new nkeys from seed
Implementation
static Nkeys fromSeed(String seed) {
var raw = base32.decode(seed);
// Need to do the reverse here to get back to internal representation.
var b1 = raw[0] & 248; // 248 = 11111000
var b2 = ((raw[0] & 7) << 5) | ((raw[1] & 248) >> 3); // 7 = 00000111
if (b1 != PrefixByteSeed) {
throw Exception(NkeysException('not seed prefix byte'));
}
if (_checkValidPublicPrefixByte(b2) == PrefixByteUnknown) {
throw Exception(NkeysException('not public prefix byte'));
}
var rawSeed = raw.sublist(2, 34);
var key = ed.newKeyFromSeed(rawSeed);
var kp = ed.KeyPair(key, ed.public(key));
return Nkeys(b2, kp);
}