EC2N::Point EC2N::BERDecodePoint(BufferedTransformation &bt) const
{
SecByteBlock str;
BERDecodeOctetString(bt, str);
Point P;
if (!DecodePoint(P, str, str.size))
BERDecodeError();
return P;
}
EC2N::EC2N(BufferedTransformation &bt)
: m_field(BERDecodeGF2NP(bt))
{
BERSequenceDecoder seq(bt);
m_field->BERDecodeElement(seq, m_a);
m_field->BERDecodeElement(seq, m_b);
// skip optional seed
if (!seq.EndReached())
BERDecodeOctetString(seq, g_bitBucket);
seq.MessageEnd();
}
ECP::ECP(BufferedTransformation &bt)
: m_fieldPtr(new Field(bt))
{
BERSequenceDecoder seq(bt);
GetField().BERDecodeElement(seq, m_a);
GetField().BERDecodeElement(seq, m_b);
// skip optional seed
if (!seq.EndReached())
BERDecodeOctetString(seq, TheBitBucket());
seq.MessageEnd();
}
NAMESPACE_END
ECP::ECP(BufferedTransformation &bt)
: m_fieldPtr(new Field(bt)), m_field(*m_fieldPtr)
{
BERSequenceDecoder seq(bt);
m_field.BERDecodeElement(seq, m_a);
m_field.BERDecodeElement(seq, m_b);
// skip optional seed
if (!seq.EndReached())
BERDecodeOctetString(seq, g_bitBucket);
seq.MessageEnd();
}
