decodeBigInt static method
Given an ASN1 encoded integer return the integer value of the byte stream.
Implementation
static BigInt decodeBigInt(Uint8List bytes) {
var isNegative = (bytes[0] & 0x80) != 0;
var result = BigInt.zero;
for (var i = 0; i < bytes.length; ++i) {
result = result << 8;
var x = isNegative ? (bytes[i] ^ 0xff) : bytes[i];
result += BigInt.from(x);
}
if (isNegative) return (result + BigInt.one) * _minusOne;
return result;
}