internal static byte[] ToSubjectPublicKeyInfo(this DSAParameters parameters)
{
// SubjectPublicKeyInfo::= SEQUENCE {
// algorithm AlgorithmIdentifier,
// subjectPublicKey BIT STRING }
// Dss-Parms ::= SEQUENCE {
// p INTEGER,
// q INTEGER,
// g INTEGER
// }
return(DerEncoder.ConstructSequence(
DerEncoder.ConstructSegmentedSequence(
DerEncoder.SegmentedEncodeOid(s_idDsa),
DerEncoder.ConstructSegmentedSequence(
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.P),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Q),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.G)
)
),
DerEncoder.SegmentedEncodeBitString(
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Y))
));
}
internal static byte[] ToPrivateKeyBlob(this ECParameters parameters)
{
parameters.Validate();
if (!parameters.Curve.IsNamed)
{
throw new PlatformNotSupportedException(SR.Cryptography_ECC_NamedCurvesOnly);
}
byte[] pointBlob = GetPointBlob(ref parameters);
// ECPrivateKey{CURVES:IOSet} ::= SEQUENCE {
// version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1),
// privateKey OCTET STRING,
// parameters [0] Parameters{{IOSet}} OPTIONAL,
// publicKey [1] BIT STRING OPTIONAL
// }
return(DerEncoder.ConstructSequence(
s_encodedVersion1,
DerEncoder.SegmentedEncodeOctetString(parameters.D),
DerEncoder.ConstructSegmentedContextSpecificValue(
0,
DerEncoder.SegmentedEncodeOid(parameters.Curve.Oid)),
DerEncoder.ConstructSegmentedContextSpecificValue(
1,
DerEncoder.SegmentedEncodeBitString(pointBlob))));
}
internal static byte[] ToSubjectPublicKeyInfo(this RSAParameters parameters)
{
Debug.Assert(parameters.D == null);
// SubjectPublicKeyInfo::= SEQUENCE {
// algorithm AlgorithmIdentifier,
// subjectPublicKey BIT STRING }
return(DerEncoder.ConstructSequence(
s_encodedRsaAlgorithmIdentifier,
DerEncoder.SegmentedEncodeBitString(
parameters.ToPkcs1Blob())));
}
private static byte[] ConvertToOpenSslFormat(byte[] input)
{
Debug.Assert(input != null);
Debug.Assert(input.Length % 2 == 0);
Debug.Assert(input.Length > 1);
// Input is (r, s), each of them exactly half of the array.
// Output is the DER encoded value of CONSTRUCTEDSEQUENCE(INTEGER(r), INTEGER(s)).
int halfLength = input.Length / 2;
byte[][] rEncoded = DerEncoder.SegmentedEncodeUnsignedInteger(input, 0, halfLength);
byte[][] sEncoded = DerEncoder.SegmentedEncodeUnsignedInteger(input, halfLength, halfLength);
return(DerEncoder.ConstructSequence(rEncoded, sEncoded));
}
internal static byte[] ToSubjectPublicKeyInfo(this ECParameters parameters)
{
parameters.Validate();
if (!parameters.Curve.IsNamed)
{
throw new PlatformNotSupportedException(SR.Cryptography_ECC_NamedCurvesOnly);
}
byte[] pointBlob = GetPointBlob(ref parameters);
return(DerEncoder.ConstructSequence(
DerEncoder.ConstructSegmentedSequence(
s_encodedIdEcPublicKey,
DerEncoder.SegmentedEncodeOid(parameters.Curve.Oid)),
DerEncoder.SegmentedEncodeBitString(pointBlob)));
}
internal static byte[] ToPkcs1Blob(this RSAParameters parameters)
{
if (parameters.Exponent == null || parameters.Modulus == null)
{
throw new CryptographicException(SR.Cryptography_InvalidRsaParameters);
}
if (parameters.D == null)
{
if (parameters.P != null ||
parameters.DP != null ||
parameters.Q != null ||
parameters.DQ != null ||
parameters.InverseQ != null)
{
throw new CryptographicException(SR.Cryptography_InvalidRsaParameters);
}
return(DerEncoder.ConstructSequence(
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Modulus),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Exponent)));
}
if (parameters.P == null ||
parameters.DP == null ||
parameters.Q == null ||
parameters.DQ == null ||
parameters.InverseQ == null)
{
throw new CryptographicException(SR.Cryptography_InvalidRsaParameters);
}
return(DerEncoder.ConstructSequence(
DerEncoder.SegmentedEncodeUnsignedInteger(s_versionNumberBytes),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Modulus),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Exponent),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.D),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.P),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Q),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.DP),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.DQ),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.InverseQ)));
}
internal static byte[] ToPrivateKeyBlob(this DSAParameters parameters)
{
Debug.Assert(parameters.X != null);
// DSAPrivateKey ::= SEQUENCE(
// version INTEGER,
// p INTEGER,
// q INTEGER,
// g INTEGER,
// y INTEGER,
// x INTEGER,
// )
return(DerEncoder.ConstructSequence(
DerEncoder.SegmentedEncodeUnsignedInteger(new byte[] { 0 }),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.P),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Q),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.G),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.Y),
DerEncoder.SegmentedEncodeUnsignedInteger(parameters.X)));
}
