| public C_Decrypt ( uint session, byte encryptedData, uint encryptedDataLen, byte data, uint &dataLen ) : CKR | ||
| session | uint | The session's handle |
| encryptedData | byte | Encrypted data |
| encryptedDataLen | uint | The length of the encrypted data |
| data | byte | /// If set to null then the length of decrypted data is returned in "dataLen" parameter, without actually returning decrypted data. /// If not set to null then "dataLen" parameter must contain the lenght of data array and decrypted data is returned in "data" parameter. /// |
| dataLen | uint | Location that holds the length of the decrypted data |
| return | CKR | |
public void _01_EncryptAndDecryptSinglePartTest()
{
if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
Assert.Inconclusive("Test cannot be executed on this platform");
CKR rv = CKR.CKR_OK;
using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
{
rv = pkcs11.C_Initialize(Settings.InitArgs41);
if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
Assert.Fail(rv.ToString());
// Find first slot with token present
uint slotId = Helpers.GetUsableSlot(pkcs11);
uint session = CK.CK_INVALID_HANDLE;
rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Login as normal user
rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Generate symetric key
uint keyId = CK.CK_INVALID_HANDLE;
rv = Helpers.GenerateKey(pkcs11, session, ref keyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Generate random initialization vector
byte[] iv = new byte[8];
rv = pkcs11.C_GenerateRandom(session, iv, Convert.ToUInt32(iv.Length));
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Specify encryption mechanism with initialization vector as parameter.
// Note that CkmUtils.CreateMechanism() automaticaly copies iv into newly allocated unmanaged memory.
CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_DES3_CBC, iv);
// Initialize encryption operation
rv = pkcs11.C_EncryptInit(session, ref mechanism, keyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
byte[] sourceData = ConvertUtils.Utf8StringToBytes("Our new password");
// Get length of encrypted data in first call
uint encryptedDataLen = 0;
rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), null, ref encryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(encryptedDataLen > 0);
// Allocate array for encrypted data
byte[] encryptedData = new byte[encryptedDataLen];
// Get encrypted data in second call
rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), encryptedData, ref encryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Do something interesting with encrypted data
// Initialize decryption operation
rv = pkcs11.C_DecryptInit(session, ref mechanism, keyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Get length of decrypted data in first call
uint decryptedDataLen = 0;
rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), null, ref decryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(decryptedDataLen > 0);
// Allocate array for decrypted data
byte[] decryptedData = new byte[decryptedDataLen];
// Get decrypted data in second call
rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), decryptedData, ref decryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Do something interesting with decrypted data
Assert.IsTrue(Convert.ToBase64String(sourceData) == Convert.ToBase64String(decryptedData));
// In LowLevelAPI we have to free unmanaged memory taken by mechanism parameter (iv in this case)
UnmanagedMemory.Free(ref mechanism.Parameter);
mechanism.ParameterLen = 0;
rv = pkcs11.C_DestroyObject(session, keyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_Logout(session);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_CloseSession(session);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_Finalize(IntPtr.Zero);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
}
}
public void _03_EncryptAndDecryptSinglePartOaepTest()
{
if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
Assert.Inconclusive("Test cannot be executed on this platform");
CKR rv = CKR.CKR_OK;
using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
{
rv = pkcs11.C_Initialize(Settings.InitArgs41);
if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
Assert.Fail(rv.ToString());
// Find first slot with token present
uint slotId = Helpers.GetUsableSlot(pkcs11);
uint session = CK.CK_INVALID_HANDLE;
rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Login as normal user
rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Generate asymetric key pair
uint pubKeyId = CK.CK_INVALID_HANDLE;
uint privKeyId = CK.CK_INVALID_HANDLE;
rv = Helpers.GenerateKeyPair(pkcs11, session, ref pubKeyId, ref privKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Specify mechanism parameters
CK_RSA_PKCS_OAEP_PARAMS mechanismParams = new CK_RSA_PKCS_OAEP_PARAMS();
mechanismParams.HashAlg = (uint)CKM.CKM_SHA_1;
mechanismParams.Mgf = (uint)CKG.CKG_MGF1_SHA1;
mechanismParams.Source = (uint)CKZ.CKZ_DATA_SPECIFIED;
mechanismParams.SourceData = IntPtr.Zero;
mechanismParams.SourceDataLen = 0;
// Specify encryption mechanism with parameters
// Note that CkmUtils.CreateMechanism() automaticaly copies mechanismParams into newly allocated unmanaged memory.
CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_RSA_PKCS_OAEP, mechanismParams);
// Initialize encryption operation
rv = pkcs11.C_EncryptInit(session, ref mechanism, pubKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world");
// Get length of encrypted data in first call
uint encryptedDataLen = 0;
rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), null, ref encryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(encryptedDataLen > 0);
// Allocate array for encrypted data
byte[] encryptedData = new byte[encryptedDataLen];
// Get encrypted data in second call
rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), encryptedData, ref encryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Do something interesting with encrypted data
// Initialize decryption operation
rv = pkcs11.C_DecryptInit(session, ref mechanism, privKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Get length of decrypted data in first call
uint decryptedDataLen = 0;
rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), null, ref decryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(decryptedDataLen > 0);
// Allocate array for decrypted data
byte[] decryptedData = new byte[decryptedDataLen];
// Get decrypted data in second call
rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), decryptedData, ref decryptedDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Array may need to be shrinked
if (decryptedData.Length != decryptedDataLen)
Array.Resize(ref decryptedData, Convert.ToInt32(decryptedDataLen));
// Do something interesting with decrypted data
Assert.IsTrue(Convert.ToBase64String(sourceData) == Convert.ToBase64String(decryptedData));
// In LowLevelAPI we have to free unmanaged memory taken by mechanism parameter
UnmanagedMemory.Free(ref mechanism.Parameter);
mechanism.ParameterLen = 0;
rv = pkcs11.C_DestroyObject(session, privKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_DestroyObject(session, pubKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_Logout(session);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_CloseSession(session);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
rv = pkcs11.C_Finalize(IntPtr.Zero);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
}
}