public static byte[] ConvertToDefiniteLength(byte[] berPkcs12File, char[] passwd)
{
Pfx pfx = new Pfx(Asn1Sequence.GetInstance(Asn1Object.FromByteArray(berPkcs12File)));
ContentInfo authSafe = pfx.AuthSafe;
Asn1OctetString instance = Asn1OctetString.GetInstance(authSafe.Content);
Asn1Object asn1Object = Asn1Object.FromByteArray(instance.GetOctets());
authSafe = new ContentInfo(authSafe.ContentType, new DerOctetString(asn1Object.GetEncoded("DER")));
MacData macData = pfx.MacData;
try
{
int intValue = macData.IterationCount.IntValue;
byte[] octets = Asn1OctetString.GetInstance(authSafe.Content).GetOctets();
byte[] digest = Pkcs12Store.CalculatePbeMac(macData.Mac.AlgorithmID.Algorithm, macData.GetSalt(), intValue, passwd, wrongPkcs12Zero: false, octets);
AlgorithmIdentifier algID = new AlgorithmIdentifier(macData.Mac.AlgorithmID.Algorithm, DerNull.Instance);
DigestInfo digInfo = new DigestInfo(algID, digest);
macData = new MacData(digInfo, macData.GetSalt(), intValue);
}
catch (Exception ex)
{
throw new IOException("error constructing MAC: " + ex.ToString());
}
pfx = new Pfx(authSafe, macData);
return(pfx.GetEncoded("DER"));
}
