Org.BouncyCastle.X509.X509Certificate.X509Certificate C# (CSharp) Method

        public X509Certificate(
            X509CertificateStructure c)
        {
            this.c = c;

            try
            {
                Asn1OctetString str = this.GetExtensionValue(new DerObjectIdentifier("2.5.29.19"));

                if (str != null)
                {
                    basicConstraints = BasicConstraints.GetInstance(
                        X509ExtensionUtilities.FromExtensionValue(str));
                }
            }
            catch (Exception e)
            {
                throw new CertificateParsingException("cannot construct BasicConstraints: " + e);
            }

            try
            {
                Asn1OctetString str = this.GetExtensionValue(new DerObjectIdentifier("2.5.29.15"));

                if (str != null)
                {
                    DerBitString bits = DerBitString.GetInstance(
                        X509ExtensionUtilities.FromExtensionValue(str));

                    byte[] bytes = bits.GetBytes();
                    int length = (bytes.Length * 8) - bits.PadBits;

                    keyUsage = new bool[(length < 9) ? 9 : length];

                    for (int i = 0; i != length; i++)
                    {
                        //						keyUsage[i] = (bytes[i / 8] & (0x80 >>> (i % 8))) != 0;
                        keyUsage[i] = (bytes[i / 8] & (0x80 >> (i % 8))) != 0;
                    }
                }
                else
                {
                    keyUsage = null;
                }
            }
            catch (Exception e)
            {
                throw new CertificateParsingException("cannot construct KeyUsage: " + e);
            }
        }