private static AsnType CreateOctetString(AsnType value)
{
if (IsEmpty(value))
{
return(new AsnType(0x04, 0x00));
}
return(new AsnType(0x04, value.GetBytes()));
}
private static AsnType CreateBitString(AsnType value)
{
if (IsEmpty(value))
{
return(new AsnType(0x03, EMPTY));
}
return(CreateBitString(value.GetBytes(), 0x00));
}
private byte[] PublicKeyToX509(RSAParameters publicKey)
{
AsnType oid = AsnType.CreateOid("1.2.840.113549.1.1.1");
AsnType algorithmID = AsnType.CreateSequence(new AsnType[] { oid, AsnType.CreateNull() });
AsnType n = AsnType.CreateIntegerPos(publicKey.Modulus);
AsnType e = AsnType.CreateIntegerPos(publicKey.Exponent);
AsnType key = AsnType.CreateBitString(AsnType.CreateSequence(new AsnType[] { n, e }));
AsnType publicKeyInfo = AsnType.CreateSequence(new AsnType[] { algorithmID, key });
return(new AsnMessage(publicKeyInfo.GetBytes(), "X.509").GetBytes());
}
internal static byte[] PrivateKeyToPKCS8(RSAParameters privateKey)
{
AsnType n = CreateIntegerPos(privateKey.Modulus);
AsnType e = CreateIntegerPos(privateKey.Exponent);
AsnType d = CreateIntegerPos(privateKey.D);
AsnType p = CreateIntegerPos(privateKey.P);
AsnType q = CreateIntegerPos(privateKey.Q);
AsnType dp = CreateIntegerPos(privateKey.DP);
AsnType dq = CreateIntegerPos(privateKey.DQ);
AsnType iq = CreateIntegerPos(privateKey.InverseQ);
AsnType version = CreateInteger(new byte[] { 0 });
AsnType key = CreateOctetString(
CreateSequence(new AsnType[] { version, n, e, d, p, q, dp, dq, iq })
);
AsnType algorithmID = CreateSequence(new AsnType[] { CreateOid("1.2.840.113549.1.1.1"), CreateNull() });
AsnType privateKeyInfo = CreateSequence(new AsnType[] { version, algorithmID, key });
return(new AsnMessage(privateKeyInfo.GetBytes(), "PKCS#8").GetBytes());
}
/// <summary>
/// <para>An ordered collection zero, one or more types.
/// Returns the AsnType representing an ASN.1 encoded sequence.</para>
/// <para>If the AsnType value is null,an
/// empty sequence (length 0) is returned.</para>
/// </summary>
/// <param name="value">An AsnType consisting of
/// a single value to be encoded.</param>
/// <returns>Returns the AsnType representing an ASN.1
/// encoded sequence.</returns>
/// <seealso cref="CreateSet(AsnType)"/>
/// <seealso cref="CreateSet(AsnType[])"/>
/// <seealso cref="CreateSetOf(AsnType)"/>
/// <seealso cref="CreateSetOf(AsnType[])"/>
/// <seealso cref="CreateSequence(AsnType)"/>
/// <seealso cref="CreateSequence(AsnType[])"/>
/// <seealso cref="CreateSequenceOf(AsnType)"/>
/// <seealso cref="CreateSequenceOf(AsnType[])"/>
internal static AsnType CreateSequenceOf(AsnType value)
{
// From the ASN.1 Mailing List
if (IsEmpty(value))
{ return new AsnType(0x30, EMPTY); }
// Sequence: Tag 0x30 (16, Universal, Constructed)
return new AsnType(0x30, value.GetBytes());
}
/// <summary>
/// <para>An ordered collection of one or more types.
/// Returns the AsnType representing an ASN.1 encoded sequence.</para>
/// <para>If the AsnType is null, an empty sequence (length 0)
/// is returned.</para>
/// </summary>
/// <param name="value">An AsnType consisting of
/// a single value to be encoded.</param>
/// <returns>Returns the AsnType representing an ASN.1
/// encoded sequence.</returns>
/// <seealso cref="CreateSet(AsnType)"/>
/// <seealso cref="CreateSet(AsnType[])"/>
/// <seealso cref="CreateSetOf(AsnType)"/>
/// <seealso cref="CreateSetOf(AsnType[])"/>
/// <seealso cref="CreateSequence(AsnType)"/>
/// <seealso cref="CreateSequence(AsnType[])"/>
/// <seealso cref="CreateSequenceOf(AsnType)"/>
/// <seealso cref="CreateSequenceOf(AsnType[])"/>
internal static AsnType CreateSequence(AsnType value)
{
// Should be at least 1...
Debug.Assert(!IsEmpty(value));
// One or more required
if (IsEmpty(value))
{ throw new ArgumentException("A sequence requires at least one value."); }
// Sequence: Tag 0x30 (16, Universal, Constructed)
return new AsnType(0x30, value.GetBytes());
}
/// <summary>
/// An ordered sequence of zero, one or more octets. Returns
/// the byte[] representing an ASN.1 encoded octet string.
/// If octets is null or length is 0, an empty (0 length)
/// o ctet string is returned.
/// </summary>
/// <param name="value">An AsnType object to be encoded.</param>
/// <returns>Returns the AsnType representing an ASN.1
/// encoded octet string.</returns>
/// <seealso cref="CreateBitString(byte[])"/>
/// <seealso cref="CreateBitString(byte[], uint)"/>
/// <seealso cref="CreateBitString(AsnType)"/>
/// <seealso cref="CreateBitString(String)"/>
/// <seealso cref="CreateOctetString(byte[])"/>
/// <seealso cref="CreateOctetString(String)"/>
internal static AsnType CreateOctetString(AsnType value)
{
if (IsEmpty(value))
{
// Empty octet string
return new AsnType(0x04, 0x00);
}
// OctetString: Tag 0x04 (4, Universal, Primitive)
return new AsnType(0x04, value.GetBytes());
}
/// <summary>
/// An ordered sequence of zero, one or more bits. Returns
/// the AsnType representing an ASN.1 encoded bit string.
/// If value is null, an empty (0 length) bit string is
/// returned.
/// </summary>
/// <param name="value">An AsnType object to be encoded.</param>
/// <returns>Returns the AsnType representing an ASN.1
/// encoded bit string.</returns>
/// <seealso cref="CreateBitString(byte[])"/>
/// <seealso cref="CreateBitString(byte[], uint)"/>
/// <seealso cref="CreateBitString(AsnType[])"/>
/// <seealso cref="CreateBitString(String)"/>
/// <seealso cref="CreateOctetString(byte[])"/>
/// <seealso cref="CreateOctetString(AsnType)"/>
/// <seealso cref="CreateOctetString(AsnType[])"/>
/// <seealso cref="CreateOctetString(String)"/>
internal static AsnType CreateBitString(AsnType value)
{
if (IsEmpty(value))
{ return new AsnType(0x03, EMPTY); }
// BitString: Tag 0x03 (3, Universal, Primitive)
return CreateBitString(value.GetBytes(), 0x00);
}
private static AsnType CreateBitString(AsnType value)
{
return(IsEmpty(value) ? new AsnType(0x03, empty) : CreateBitString(value.GetBytes()));
}
