Wrong PEM encoding: RSAPrivateKey.exponent returns the private exponent

[elsamuko]

See here:

flutter_rsa_generator_example/lib/utils/rsa_key_helper.dart

Line 192 in 64eb00b

var publicExponent = ASN1Integer(privateKey.exponent);

I used this helper function to calculate the public exponent:

// inverse of private exponent -> public exponent
//! \sa rsa_key_generator.dart
static BigInt getPublicExponent(RSAPrivateKey privateKey) {
  var pSub1 = (privateKey.p - BigInt.one);
  var qSub1 = (privateKey.q - BigInt.one);
  var phi = (pSub1 * qSub1);
  var publicExponent = privateKey.exponent.modInverse(phi);
  return publicExponent;
}