toDer static method

List<int> toDer(List<BigInt> bigIntList)

Converts a list of BigInt values to DER-encoded bytes.

The toDer method takes a list of BigInt values bigIntList and encodes them in DER format. It returns a list of bytes representing the DER-encoded sequence of integers.

Example Usage:

List<BigInt> values = [BigInt.from(123), BigInt.from(456)];
`List<int>` derBytes = DEREncoding.toDer(values);

Parameters:

• bigIntList: The list of BigInt values to be DER-encoded. Returns: A list of bytes representing the DER-encoded sequence of integers.

Implementation

static List<int> toDer(List<BigInt> bigIntList) {
  final List<List<int>> encodedIntegers = bigIntList.map((bi) {
    final List<int> bytes = _encodeInteger(bi);
    return bytes;
  }).toList();
  final content = encodedIntegers.expand((e) => e);
  final List<int> lengthBytes = _encodeLength(content.length);
  final derBytes = [
    0x30,
    ...lengthBytes,
    ...encodedIntegers.expand((e) => e)
  ];

  return derBytes;
}