private static KeyTransRecipientInfo EncodeKeyTransl_Rsa2048(RSAEncryptionPadding encryptionPadding, SubjectIdentifierType type = SubjectIdentifierType.IssuerAndSerialNumber)
{
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 cert = Certificates.RSA2048Sha256KeyTransfer1.GetCertificate())
{
CmsRecipient cmsRecipient;
if (encryptionPadding is null)
{
cmsRecipient = new CmsRecipient(type, cert);
}
else
{
cmsRecipient = new CmsRecipient(type, cert, encryptionPadding);
}
ecms.Encrypt(cmsRecipient);
}
byte[] encodedMessage = ecms.Encode();
EnvelopedCms ecms2 = new EnvelopedCms();
ecms2.Decode(encodedMessage);
RecipientInfoCollection recipients = ecms2.RecipientInfos;
Assert.Equal(1, recipients.Count);
RecipientInfo recipientInfo = recipients[0];
Assert.IsType <KeyTransRecipientInfo>(recipientInfo);
return((KeyTransRecipientInfo)recipientInfo);
}
public static void ReuseEnvelopeCmsEncodeThenDecode()
{
// Test ability to encrypt, encode and decode all in one EnvelopedCms instance.
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 cert = Certificates.RSAKeyTransfer1.GetCertificate())
{
CmsRecipient cmsRecipient = new CmsRecipient(cert);
ecms.Encrypt(cmsRecipient);
}
byte[] encodedMessage = ecms.Encode();
ecms.Decode(encodedMessage);
RecipientInfoCollection recipients = ecms.RecipientInfos;
Assert.Equal(1, recipients.Count);
RecipientInfo recipientInfo = recipients[0];
KeyTransRecipientInfo recipient = recipientInfo as KeyTransRecipientInfo;
Assert.NotNull(recipientInfo);
SubjectIdentifier subjectIdentifier = recipient.RecipientIdentifier;
object value = subjectIdentifier.Value;
Assert.True(value is X509IssuerSerial);
X509IssuerSerial xis = (X509IssuerSerial)value;
Assert.Equal("CN=RSAKeyTransfer1", xis.IssuerName);
Assert.Equal("31D935FB63E8CFAB48A0BF7B397B67C0", xis.SerialNumber);
}
private static void TestSimpleDecrypt_RoundTrip(CertLoader certLoader, ContentInfo contentInfo, string algorithmOidValue, SubjectIdentifierType type, ContentInfo expectedContentInfo = null)
{
// Deep-copy the contentInfo since the real ContentInfo doesn't do this. This defends against a bad implementation changing
// our "expectedContentInfo" to match what it produces.
expectedContentInfo = expectedContentInfo ?? new ContentInfo(new Oid(contentInfo.ContentType), (byte[])(contentInfo.Content.Clone()));
string certSubjectName;
byte[] encodedMessage;
byte[] originalCopy = (byte[])(contentInfo.Content.Clone());
using (X509Certificate2 certificate = certLoader.GetCertificate())
{
certSubjectName = certificate.Subject;
AlgorithmIdentifier alg = new AlgorithmIdentifier(new Oid(algorithmOidValue));
EnvelopedCms ecms = new EnvelopedCms(contentInfo, alg);
CmsRecipient cmsRecipient = new CmsRecipient(type, certificate);
ecms.Encrypt(cmsRecipient);
Assert.Equal(originalCopy.ByteArrayToHex(), ecms.ContentInfo.Content.ByteArrayToHex());
encodedMessage = ecms.Encode();
}
// We don't pass "certificate" down because it's expected that the certificate used for encrypting doesn't have a private key (part of the purpose of this test is
// to ensure that you don't need the recipient's private key to encrypt.) The decrypt phase will have to locate the matching cert with the private key.
VerifySimpleDecrypt(encodedMessage, certLoader, expectedContentInfo);
}
public static void CmsRecipientPassNullCertificate()
{
object ignore;
Assert.Throws <ArgumentNullException>(() => ignore = new CmsRecipient(null));
Assert.Throws <ArgumentNullException>(() => ignore = new CmsRecipient(SubjectIdentifierType.IssuerAndSerialNumber, null));
}
public static void RoundTrip_ExplicitSki()
{
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 explicitSkiCert = Certificates.RSAKeyTransfer_ExplicitSki.GetCertificate())
{
CmsRecipient recipient = new CmsRecipient(SubjectIdentifierType.SubjectKeyIdentifier, explicitSkiCert);
ecms.Encrypt(recipient);
}
byte[] encodedMessage = ecms.Encode();
ecms = new EnvelopedCms();
ecms.Decode(encodedMessage);
using (X509Certificate2 privateCert = Certificates.RSAKeyTransfer_ExplicitSki.TryGetCertificateWithPrivateKey())
{
if (privateCert == null)
{
return; // CertLoader can't load the private certificate.
}
ecms.Decrypt(new X509Certificate2Collection(privateCert));
}
Assert.Equal(contentInfo.ContentType.Value, ecms.ContentInfo.ContentType.Value);
Assert.Equal <byte>(contentInfo.Content, ecms.ContentInfo.Content);
}
private static void Assert_Certificate_Roundtrip(CertLoader certificateLoader)
{
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 cert = certificateLoader.GetCertificate())
{
CmsRecipient recipient = new CmsRecipient(cert);
ecms.Encrypt(recipient);
}
byte[] encodedMessage = ecms.Encode();
ecms = new EnvelopedCms();
ecms.Decode(encodedMessage);
using (X509Certificate2 privateCert = certificateLoader.TryGetCertificateWithPrivateKey())
{
if (privateCert == null)
{
return; // CertLoader can't load the private certificate.
}
ecms.Decrypt(new X509Certificate2Collection(privateCert));
}
Assert.Equal(contentInfo.ContentType.Value, ecms.ContentInfo.ContentType.Value);
Assert.Equal <byte>(contentInfo.Content, ecms.ContentInfo.Content);
}
public static void Oneary()
{
CmsRecipient a0 = s_cr0;
CmsRecipientCollection c = new CmsRecipientCollection(a0);
AssertEquals(c, new CmsRecipient[] { a0 });
}
public static void DecryptUsingCertificateWithSameSubjectKeyIdentifierButDifferentKeyPair()
{
using (X509Certificate2 recipientCert = Certificates.RSAKeyTransfer4_ExplicitSki.GetCertificate())
using (X509Certificate2 otherRecipientWithSameSki = Certificates.RSAKeyTransfer5_ExplicitSkiOfRSAKeyTransfer4.TryGetCertificateWithPrivateKey())
using (X509Certificate2 realRecipientCert = Certificates.RSAKeyTransfer4_ExplicitSki.TryGetCertificateWithPrivateKey())
{
Assert.Equal(recipientCert, realRecipientCert);
Assert.NotEqual(recipientCert, otherRecipientWithSameSki);
Assert.Equal(GetSubjectKeyIdentifier(recipientCert), GetSubjectKeyIdentifier(otherRecipientWithSameSki));
byte[] plainText = new byte[] { 1, 3, 7, 9 };
ContentInfo content = new ContentInfo(plainText);
EnvelopedCms ecms = new EnvelopedCms(content);
CmsRecipient recipient = new CmsRecipient(SubjectIdentifierType.SubjectKeyIdentifier, recipientCert);
ecms.Encrypt(recipient);
byte[] encoded = ecms.Encode();
ecms = new EnvelopedCms();
ecms.Decode(encoded);
Assert.ThrowsAny <CryptographicException>(() => ecms.Decrypt(new X509Certificate2Collection(otherRecipientWithSameSki)));
ecms.Decrypt(new X509Certificate2Collection(realRecipientCert));
Assert.Equal(plainText, ecms.ContentInfo.Content);
}
}
public static void RemoveNonExistent()
{
CmsRecipientCollection c = new CmsRecipientCollection();
CmsRecipient a0 = s_cr0;
c.Remove(a0); // You can "remove" items that aren't in the collection - this is defined as a NOP.
}
public static void CopyExceptions()
{
CmsRecipient a0 = s_cr0;
CmsRecipient a1 = s_cr1;
CmsRecipient a2 = s_cr2;
CmsRecipientCollection c = new CmsRecipientCollection();
c.Add(a0);
c.Add(a1);
c.Add(a2);
CmsRecipient[] a = new CmsRecipient[3];
Assert.Throws <ArgumentNullException>(() => c.CopyTo(null, 0));
Assert.Throws <ArgumentOutOfRangeException>(() => c.CopyTo(a, -1));
Assert.Throws <ArgumentOutOfRangeException>(() => c.CopyTo(a, 3));
AssertExtensions.Throws <ArgumentException>(null, () => c.CopyTo(a, 1));
ICollection ic = c;
Assert.Throws <ArgumentNullException>(() => ic.CopyTo(null, 0));
Assert.Throws <ArgumentOutOfRangeException>(() => ic.CopyTo(a, -1));
Assert.Throws <ArgumentOutOfRangeException>(() => ic.CopyTo(a, 3));
AssertExtensions.Throws <ArgumentException>(null, () => ic.CopyTo(a, 1));
AssertExtensions.Throws <ArgumentException>(null, () => ic.CopyTo(new CmsRecipient[2, 2], 1));
Assert.Throws <InvalidCastException>(() => ic.CopyTo(new int[10], 1));
if (PlatformDetection.IsNonZeroLowerBoundArraySupported)
{
// Array has non-zero lower bound
Array array = Array.CreateInstance(typeof(object), new int[] { 10 }, new int[] { 10 });
Assert.Throws <IndexOutOfRangeException>(() => ic.CopyTo(array, 0));
}
}
public static void TestKeyTransRecipientIdValue_ExplicitSki_RoundTrip()
{
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 cert = Certificates.RSAKeyTransfer_ExplicitSki.GetCertificate())
{
CmsRecipient cmsRecipient = new CmsRecipient(SubjectIdentifierType.SubjectKeyIdentifier, cert);
ecms.Encrypt(cmsRecipient);
}
byte[] encodedMessage = ecms.Encode();
EnvelopedCms ecms2 = new EnvelopedCms();
ecms2.Decode(encodedMessage);
RecipientInfoCollection recipients = ecms2.RecipientInfos;
Assert.Equal(1, recipients.Count);
RecipientInfo recipientInfo = recipients[0];
Assert.IsType <KeyTransRecipientInfo>(recipientInfo);
KeyTransRecipientInfo recipient = (KeyTransRecipientInfo)recipientInfo;
SubjectIdentifier subjectIdentifier = recipient.RecipientIdentifier;
object value = subjectIdentifier.Value;
Assert.IsType <string>(value);
string ski = (string)value;
Assert.Equal("01952851C55DB594B0C6167F5863C5B6B67AEFE6", ski);
}
static void Main (string[] args)
{
// Select a binary file
var dialog = new OpenFileDialog {
Filter = "All files (*.*)|*.*",
InitialDirectory = "./",
Title = "Select a text file"
};
var filename = (dialog.ShowDialog () == DialogResult.OK) ? dialog.FileName : null;
var certificate2 = new X509Certificate2 ("c:/temp1/cert.pfx", "password");
MimeEntity body;
using (var content = new MemoryStream (File.ReadAllBytes (filename)))
var part = new MimePart (MimeTypes.GetMimeType (filename)) {
ContentDisposition = new ContentDisposition (ContentDisposition.Attachment),
ContentTransferEncoding = ContentEncoding.Binary,
FileName = Path.GetFileName (filename),
Content = new MimeContent (content)
};
var recipient = new CmsRecipient (certificate2) {
EncryptionAlgorithms = new EncryptionAlgorithm[] { EncryptionAlgorithm.TripleDes }
};
var recipients = new CmsRecipientCollection ();
recipients.Add (recipient);
using (var ctx = new TemporarySecureMimeContext ())
body = ApplicationPkcs7Mime.Encrypt (ctx, recipients, part);
}
//
// This returns an allocated native memory block. Its lifetime (and that of any allocated subblocks it may point to) is that of "hb".
//
private static CMSG_RECIPIENT_ENCODE_INFO EncodeRecipientInfo(CmsRecipient recipient, AlgorithmIdentifier contentEncryptionAlgorithm, HeapBlockRetainer hb)
{
CMSG_RECIPIENT_ENCODE_INFO recipientEncodeInfo;
unsafe
{
switch (recipient.Certificate.GetKeyAlgorithm())
{
case Oids.Rsa:
case Oids.RsaOaep:
recipientEncodeInfo.dwRecipientChoice = CMsgCmsRecipientChoice.CMSG_KEY_TRANS_RECIPIENT;
recipientEncodeInfo.pCmsRecipientEncodeInfo = (IntPtr)EncodeKeyTransRecipientInfo(recipient, hb);
break;
case Oids.Esdh:
case Oids.DiffieHellman:
case Oids.DiffieHellmanPkcs3:
recipientEncodeInfo.dwRecipientChoice = CMsgCmsRecipientChoice.CMSG_KEY_AGREE_RECIPIENT;
recipientEncodeInfo.pCmsRecipientEncodeInfo = (IntPtr)EncodeKeyAgreeRecipientInfo(recipient, contentEncryptionAlgorithm, hb);
break;
default:
throw ErrorCode.CRYPT_E_UNKNOWN_ALGO.ToCryptographicException();
}
}
return(recipientEncodeInfo);
}
//
// This returns an allocated native memory block. Its lifetime (and that of any allocated subblocks it may point to) is that of "hb".
//
private static unsafe CERT_ID EncodeRecipientId(CmsRecipient recipient, SafeCertContextHandle hCertContext, CERT_CONTEXT *pCertContext, CERT_INFO *pCertInfo, HeapBlockRetainer hb)
{
CERT_ID recipientId = default(CERT_ID);
SubjectIdentifierType type = recipient.RecipientIdentifierType;
switch (type)
{
case SubjectIdentifierType.IssuerAndSerialNumber:
{
recipientId.dwIdChoice = CertIdChoice.CERT_ID_ISSUER_SERIAL_NUMBER;
recipientId.u.IssuerSerialNumber.Issuer = pCertInfo->Issuer;
recipientId.u.IssuerSerialNumber.SerialNumber = pCertInfo->SerialNumber;
break;
}
case SubjectIdentifierType.SubjectKeyIdentifier:
{
byte[] ski = hCertContext.GetSubjectKeyIdentifer();
IntPtr pSki = hb.AllocBytes(ski);
recipientId.dwIdChoice = CertIdChoice.CERT_ID_KEY_IDENTIFIER;
recipientId.u.KeyId.cbData = (uint)(ski.Length);
recipientId.u.KeyId.pbData = pSki;
break;
}
default:
// The public contract for CmsRecipient guarantees that SubjectKeyIdentifier and IssuerAndSerialNumber are the only two possibilities.
Debug.Fail($"Unexpected SubjectIdentifierType: {type}");
throw new NotSupportedException(SR.Format(SR.Cryptography_Cms_Invalid_Subject_Identifier_Type, type));
}
return(recipientId);
}
static void AssertDefaultValues(CmsRecipient recipient, X509Certificate certificate)
{
Assert.AreEqual(certificate, recipient.Certificate);
Assert.AreEqual(1, recipient.EncryptionAlgorithms.Length);
Assert.AreEqual(EncryptionAlgorithm.TripleDes, recipient.EncryptionAlgorithms[0]);
Assert.AreEqual(SubjectIdentifierType.IssuerAndSerialNumber, recipient.RecipientIdentifierType);
}
public void SubjectKeyIdentifier()
{
X509Certificate2 x509 = GetCertificate(true);
CmsRecipient p7r = new CmsRecipient(SubjectIdentifierType.SubjectKeyIdentifier, x509);
Assert.AreEqual(SubjectIdentifierType.SubjectKeyIdentifier, p7r.RecipientIdentifierType, "RecipientIdentifierType");
Assert.AreEqual(x509.Thumbprint, p7r.Certificate.Thumbprint, "Certificate");
}
public void Unknown()
{
X509Certificate2 x509 = GetCertificate(true);
CmsRecipient p7r = new CmsRecipient(SubjectIdentifierType.Unknown, x509);
Assert.AreEqual(SubjectIdentifierType.IssuerAndSerialNumber, p7r.RecipientIdentifierType, "RecipientIdentifierType");
Assert.AreEqual(x509.Thumbprint, p7r.Certificate.Thumbprint, "Certificate");
}
static void AssertDefaultValues(CmsRecipient recipient, X509Certificate certificate)
{
Assert.AreEqual(certificate, recipient.Certificate, "Certificate");
Assert.AreEqual(1, recipient.EncryptionAlgorithms.Length, "EncryptionAlgorithms");
Assert.AreEqual(EncryptionAlgorithm.TripleDes, recipient.EncryptionAlgorithms[0], "EncryptionAlgorithm");
Assert.AreEqual(SubjectIdentifierType.IssuerAndSerialNumber, recipient.RecipientIdentifierType, "RecipientIdentifierType");
Assert.IsNull(recipient.RsaEncryptionPadding, "RsaEncryptionPadding");
}
public static void CmsRecipientPassUnknown()
{
using (X509Certificate2 cert = Certificates.RSAKeyTransfer1.GetCertificate())
{
CmsRecipient r = new CmsRecipient(SubjectIdentifierType.Unknown, cert);
Assert.Equal(SubjectIdentifierType.IssuerAndSerialNumber, r.RecipientIdentifierType);
Assert.Same(cert, r.Certificate);
}
}
private byte[] envelope(byte[] message)
{
var content = new ContentInfo(message);
var envelopedContent = new EnvelopedCms(content);
var recipient = new CmsRecipient(SubjectIdentifierType.IssuerAndSerialNumber, _recipientCert);
envelopedContent.Encrypt(recipient);
return(envelopedContent.Encode());
}
private KeyTransRecipientInfoAsn MakeKtri(
byte[] cek,
CmsRecipient recipient,
out bool v0Recipient)
{
KeyTransRecipientInfoAsn ktri = new KeyTransRecipientInfoAsn();
if (recipient.RecipientIdentifierType == SubjectIdentifierType.SubjectKeyIdentifier)
{
ktri.Version = 2;
ktri.Rid.SubjectKeyIdentifier = GetSubjectKeyIdentifier(recipient.Certificate);
}
else if (recipient.RecipientIdentifierType == SubjectIdentifierType.IssuerAndSerialNumber)
{
byte[] serial = recipient.Certificate.GetSerialNumber();
Array.Reverse(serial);
IssuerAndSerialNumberAsn iasn = new IssuerAndSerialNumberAsn
{
Issuer = recipient.Certificate.IssuerName.RawData,
SerialNumber = serial,
};
ktri.Rid.IssuerAndSerialNumber = iasn;
}
else
{
throw new CryptographicException(
SR.Cryptography_Cms_Invalid_Subject_Identifier_Type,
recipient.RecipientIdentifierType.ToString());
}
RSAEncryptionPadding padding;
switch (recipient.Certificate.GetKeyAlgorithm())
{
case Oids.RsaOaep:
padding = RSAEncryptionPadding.OaepSHA1;
ktri.KeyEncryptionAlgorithm.Algorithm = new Oid(Oids.RsaOaep, Oids.RsaOaep);
ktri.KeyEncryptionAlgorithm.Parameters = s_rsaOaepSha1Parameters;
break;
default:
padding = RSAEncryptionPadding.Pkcs1;
ktri.KeyEncryptionAlgorithm.Algorithm = new Oid(Oids.Rsa, Oids.Rsa);
ktri.KeyEncryptionAlgorithm.Parameters = s_rsaPkcsParameters;
break;
}
using (RSA rsa = recipient.Certificate.GetRSAPublicKey())
{
ktri.EncryptedKey = rsa.Encrypt(cek, padding);
}
v0Recipient = (ktri.Version == 0);
return(ktri);
}
public static string EncryptText(string plainText, X509Certificate2 certificate)
{
const string OID_NIST_AES256_CBC = "2.16.840.1.101.3.4.1.42";
var content = new ContentInfo(Encoding.Unicode.GetBytes(plainText));
var envelope = new EnvelopedCms(content, new AlgorithmIdentifier(new Oid(OID_NIST_AES256_CBC)));
var recepient = new CmsRecipient(certificate);
envelope.Encrypt(recepient);
return(Convert.ToBase64String(envelope.Encode()));
}
private byte[] EncryptedBytes(byte[] bytes)
{
var contentInfo = new ContentInfo(bytes);
var encryptAlgoOid = new Oid("2.16.840.1.101.3.4.1.42"); // AES-256-CBC
var envelopedCms = new EnvelopedCms(contentInfo, new AlgorithmIdentifier(encryptAlgoOid));
var recipient = new CmsRecipient(CryptographicCertificate);
envelopedCms.Encrypt(recipient);
return(envelopedCms.Encode());
}
private void BtnEnvolver_Click(object sender, RoutedEventArgs e)
{
X509Certificate2 cert = LeerCertificado(txtCertificado.Text);
var content = new ContentInfo(Encoding.UTF8.GetBytes(txtClaro.Text));
var envelopedCms = new EnvelopedCms(content);
var recipient = new CmsRecipient(SubjectIdentifierType.IssuerAndSerialNumber, cert);
envelopedCms.Encrypt(recipient);
txtSalida.Text = Convert.ToBase64String(envelopedCms.Encode());
}
private static void ValidateEnumerator(IEnumerator enumerator, IList <CmsRecipient> expected)
{
foreach (CmsRecipient e in expected)
{
Assert.True(enumerator.MoveNext());
CmsRecipient actual = (CmsRecipient)(enumerator.Current);
Assert.Equal(e, actual);
}
Assert.False(enumerator.MoveNext());
}
// Зашифровываем сообщение, используя открытый ключ
// получателя, при помощи класса EnvelopedCms.
static byte[] EncryptMsg(
Byte[] msg,
X509Certificate2 recipientCert,
bool useDataContextType)
{
// Помещаем сообщение в объект ContentInfo
// Это требуется для создания объекта EnvelopedCms.
ContentInfo contentInfo;
if (useDataContextType)
{
contentInfo = new ContentInfo(
new Oid("1.2.840.113549.1.7.1"),
msg);
}
else
{
contentInfo = new ContentInfo(
ContentInfo.GetContentType(msg),
msg);
}
//contentInfo = new ContentInfo(msg);
// Создаем объект EnvelopedCms, передавая ему
// только что созданный объект ContentInfo.
// Используем идентификацию получателя (SubjectIdentifierType)
// по умолчанию (IssuerAndSerialNumber).
// Не устанавливаем алгоритм зашифрования тела сообщения:
// ContentEncryptionAlgorithm устанавливается в
// RSA_DES_EDE3_CBC, несмотря на это, при зашифровании
// сообщения в адрес получателя с ГОСТ сертификатом,
// будет использован алгоритм GOST 28147-89.
//EnvelopedCms envelopedCms = new EnvelopedCms(contentInfo, new AlgorithmIdentifier(new Oid("1.2.840.113549.3.7")));
EnvelopedCms envelopedCms = new EnvelopedCms(contentInfo);
// Создаем объект CmsRecipient, который
// идентифицирует получателя зашифрованного сообщения.
CmsRecipient recip1 = new CmsRecipient(
SubjectIdentifierType.IssuerAndSerialNumber,
recipientCert);
Console.Write(
"Зашифровываем данные для одного получателя " +
"с именем {0} ...",
recip1.Certificate.SubjectName.Name);
// Зашифровываем сообщение.
envelopedCms.Encrypt(recip1);
Console.WriteLine("Выполнено.");
// Закодированное EnvelopedCms сообщение содержит
// зашифрованный текст сообщения и информацию
// о каждом получателе данного сообщения.
return(envelopedCms.Encode());
}
public static void TestKeyTransEncryptKey_RsaOaepCertificate_NoPlatformSupport_Throws()
{
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 cert = Certificates.RsaOaep2048_NoParameters.GetCertificate())
{
CmsRecipient cmsRecipient = new CmsRecipient(cert);
Assert.Throws <CryptographicException>(() => ecms.Encrypt(cmsRecipient));
}
}
/// <summary>
/// Encrypts the specified string.
/// </summary>
/// <param name="plaintext">The plaintext to be encrypted.</param>
/// <param name="certificate">The certificate to be used for encryption.</param>
/// <returns>The encrypted text.</returns>
public static string Encrypt(this string plaintext, X509Certificate2 certificate)
{
var contentInfo = new ContentInfo(Encoding.UTF8.GetBytes(plaintext));
var envelopedCms = new EnvelopedCms(contentInfo);
var cmsRecipient = new CmsRecipient(certificate);
envelopedCms.Encrypt(cmsRecipient);
return(Convert.ToBase64String(envelopedCms.Encode()));
}
public static void Twoary_Ski()
{
CmsRecipient a0 = s_cr0;
CmsRecipientCollection c = new CmsRecipientCollection(SubjectIdentifierType.SubjectKeyIdentifier, new X509Certificate2Collection(a0.Certificate));
Assert.Equal(1, c.Count);
CmsRecipient actual = c[0];
Assert.Equal(SubjectIdentifierType.SubjectKeyIdentifier, actual.RecipientIdentifierType);
Assert.Equal(a0.Certificate, actual.Certificate);
}
public static void RsaOaepCertificate_NullParameters_Throws()
{
ContentInfo contentInfo = new ContentInfo(new byte[] { 1, 2, 3 });
EnvelopedCms ecms = new EnvelopedCms(contentInfo);
using (X509Certificate2 cert = Certificates.RsaOaep2048_NullParameters.GetCertificate())
{
CmsRecipient recipient = new CmsRecipient(cert);
Assert.ThrowsAny <CryptographicException>(() => ecms.Encrypt(recipient));
}
}
public CmsRecipientCollection(CmsRecipient recipient) {}
/// <summary>
/// The <see cref="M:System.Security.Cryptography.Pkcs.CmsRecipientCollection.Add(System.Security.Cryptography.Pkcs.CmsRecipient)"/> method adds a recipient to the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> collection.
/// </summary>
///
/// <returns>
/// If the method succeeds, the method returns an <see cref="T:System.Int32"/> value that represents the zero-based position where the recipient is to be inserted.If the method fails, it throws an exception.
/// </returns>
/// <param name="recipient">A <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> object that represents the recipient to add to the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> collection.</param><exception cref="T:System.ArgumentNullException"><paramref name="recipient"/> is null.</exception>
public int Add(CmsRecipient recipient)
{
if (recipient == null)
throw new ArgumentNullException("recipient");
else
return this.m_recipients.Add((object)recipient);
}
/// <summary>
/// Gets the X.509 certificate associated with the <see cref="MimeKit.MailboxAddress"/>.
/// </summary>
/// <remarks>
/// Gets the X.509 certificate associated with the <see cref="MimeKit.MailboxAddress"/>.
/// </remarks>
/// <returns>The certificate.</returns>
/// <param name="mailbox">The mailbox.</param>
/// <exception cref="CertificateNotFoundException">
/// A certificate for the specified <paramref name="mailbox"/> could not be found.
/// </exception>
protected override CmsRecipient GetCmsRecipient (MailboxAddress mailbox)
{
var certificate = GetCmsRecipientCertificate (mailbox);
var cert = DotNetUtilities.FromX509Certificate (certificate);
var recipient = new CmsRecipient (cert);
foreach (var extension in certificate.Extensions) {
if (extension.Oid.Value == "1.2.840.113549.1.9.15") {
var algorithms = DecodeEncryptionAlgorithms (extension.RawData);
if (algorithms != null)
recipient.EncryptionAlgorithms = algorithms;
break;
}
}
return recipient;
}
/// <summary>
/// The <see cref="M:System.Security.Cryptography.Pkcs.CmsRecipientCollection.CopyTo(System.Security.Cryptography.Pkcs.CmsRecipient[],System.Int32)"/> method copies the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> collection to a <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> array.
/// </summary>
/// <param name="array">An array of <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> objects where the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> collection is to be copied.</param><param name="index">The zero-based index for the array of <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> objects in <paramref name="array"/> to which the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> collection is copied.</param><exception cref="T:System.ArgumentException"><paramref name="array"/> is not large enough to hold the specified elements.-or-<paramref name="array"/> does not contain the proper number of dimensions.</exception><exception cref="T:System.ArgumentNullException"><paramref name="array"/> is null.</exception><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="index"/> is outside the range of elements in <paramref name="array"/>.</exception>
public void CopyTo(CmsRecipient[] array, int index)
{
this.CopyTo((Array)array, index);
}
/// <summary>
/// The <see cref="M:System.Security.Cryptography.Pkcs.CmsRecipientCollection.Remove(System.Security.Cryptography.Pkcs.CmsRecipient)"/> method removes a recipient from the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> collection.
/// </summary>
/// <param name="recipient">A <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> object that represents the recipient to remove from the collection.</param><exception cref="T:System.ArgumentNullException"><paramref name="recipient"/> is null.</exception>
public void Remove(CmsRecipient recipient)
{
if (recipient == null)
throw new ArgumentNullException("recipient");
this.m_recipients.Remove((object)recipient);
}
/// <summary>
/// The <see cref="M:System.Security.Cryptography.Pkcs.CmsRecipientCollection.#ctor(System.Security.Cryptography.Pkcs.CmsRecipient)"/> constructor creates an instance of the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection"/> class and adds the specified recipient.
/// </summary>
/// <param name="recipient">An instance of the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> class that represents the specified CMS/PKCS #7 recipient.</param>
public CmsRecipientCollection(CmsRecipient recipient)
{
this.m_recipients = new ArrayList(1);
this.m_recipients.Add((object)recipient);
}
// Methods
public int Add(CmsRecipient recipient) {}
/// <summary>
/// The <see cref="M:System.Security.Cryptography.Pkcs.EnvelopedCms.Encrypt(System.Security.Cryptography.Pkcs.CmsRecipient)"/> method encrypts the contents of the CMS/PKCS #7 message by using the specified recipient information.
/// </summary>
/// <param name="recipient">A <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient"/> object that represents the recipient information.</param><exception cref="T:System.ArgumentNullException">A null reference was passed to a method that does not accept it as a valid argument. </exception><exception cref="T:System.Security.Cryptography.CryptographicException">A cryptographic operation could not be completed.</exception>
public void Encrypt(CmsRecipient recipient)
{
if (recipient == null)
throw new ArgumentNullException("recipient");
this.Encrypt(new CmsRecipientCollection(recipient));
}
public void CopyTo(CmsRecipient[] array, int index) {}
public void Remove(CmsRecipient recipient) {}
public void Encrypt(CmsRecipient recipient) {}
