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public C_GenerateKey ( uint session, |
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| session | uint | The session's handle |
| mechanism | Key generation mechanism | |
| template | The template for the new key or set of domain parameters | |
| count | uint | The number of attributes in the template |
| key | uint | Location that receives the handle of the new key or set of domain parameters |
| return | CKR | |
/// <summary>
/// Generates symetric key.
/// </summary>
/// <param name='pkcs11'>Initialized PKCS11 wrapper</param>
/// <param name='session'>Read-write session with user logged in</param>
/// <param name='keyId'>Output parameter for key object handle</param>
/// <returns>Return value of C_GenerateKey</returns>
public static CKR GenerateKey(Pkcs11 pkcs11, uint session, ref uint keyId)
{
CKR rv = CKR.CKR_OK;
// Prepare attribute template of new key
CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[6];
template[0] = CkaUtils.CreateAttribute(CKA.CKA_CLASS, CKO.CKO_SECRET_KEY);
template[1] = CkaUtils.CreateAttribute(CKA.CKA_KEY_TYPE, CKK.CKK_DES3);
template[2] = CkaUtils.CreateAttribute(CKA.CKA_ENCRYPT, true);
template[3] = CkaUtils.CreateAttribute(CKA.CKA_DECRYPT, true);
template[4] = CkaUtils.CreateAttribute(CKA.CKA_DERIVE, true);
template[5] = CkaUtils.CreateAttribute(CKA.CKA_EXTRACTABLE, true);
// Specify key generation mechanism (needs no parameter => no unamanaged memory is needed)
CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_DES3_KEY_GEN);
// Generate key
rv = pkcs11.C_GenerateKey(session, ref mechanism, template, Convert.ToUInt32(template.Length), ref keyId);
// In LowLevelAPI we have to free unmanaged memory taken by attributes
for (int i = 0; i < template.Length; i++)
{
UnmanagedMemory.Free(ref template[i].value);
template[i].valueLen = 0;
}
return rv;
}
public void _01_GenerateKeyTest()
{
if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 0)
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.InitArgs40);
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());
// Prepare attribute template of new key
CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[4];
template[0] = CkaUtils.CreateAttribute(CKA.CKA_CLASS, CKO.CKO_SECRET_KEY);
template[1] = CkaUtils.CreateAttribute(CKA.CKA_KEY_TYPE, CKK.CKK_DES3);
template[2] = CkaUtils.CreateAttribute(CKA.CKA_ENCRYPT, true);
template[3] = CkaUtils.CreateAttribute(CKA.CKA_DECRYPT, true);
// Specify key generation mechanism (needs no parameter => no unamanaged memory is needed)
CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_DES3_KEY_GEN);
// Generate key
uint keyId = CK.CK_INVALID_HANDLE;
rv = pkcs11.C_GenerateKey(session, ref mechanism, template, Convert.ToUInt32(template.Length), ref keyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// In LowLevelAPI we have to free unmanaged memory taken by attributes
for (int i = 0; i < template.Length; i++)
{
UnmanagedMemory.Free(ref template[i].value);
template[i].valueLen = 0;
}
// Do something interesting with generated key
// Destroy object
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());
}
}
