| public C_VerifyRecover ( uint session, byte signature, uint signatureLen, byte data, uint &dataLen ) : CKR | ||
| session | uint | The session's handle |
| signature | byte | Signature |
| signatureLen | uint | The length of signature |
| data | byte | /// If set to null then the length of recovered data is returned in "dataLen" parameter, without actually returning recovered data. /// If not set to null then "dataLen" parameter must contain the lenght of data array and recovered data is returned in "data" parameter. /// |
| dataLen | uint | Location that holds the length of the decrypted data |
| return | CKR | |
public void _01_BasicSignAndVerifyRecoverTest()
{
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 signing mechanism (needs no parameter => no unamanaged memory is needed)
CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_RSA_PKCS);
// Initialize signing operation
rv = pkcs11.C_SignRecoverInit(session, ref mechanism, privKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world");
// Get length of signature in first call
uint signatureLen = 0;
rv = pkcs11.C_SignRecover(session, sourceData, Convert.ToUInt32(sourceData.Length), null, ref signatureLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(signatureLen > 0);
// Allocate array for signature
byte[] signature = new byte[signatureLen];
// Get signature in second call
rv = pkcs11.C_SignRecover(session, sourceData, Convert.ToUInt32(sourceData.Length), signature, ref signatureLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Do something interesting with signature
// Initialize verification operation
rv = pkcs11.C_VerifyRecoverInit(session, ref mechanism, pubKeyId);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Get length of recovered data in first call
uint recoveredDataLen = 0;
rv = pkcs11.C_VerifyRecover(session, signature, Convert.ToUInt32(signature.Length), null, ref recoveredDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(recoveredDataLen > 0);
// Allocate array for recovered data
byte[] recoveredData = new byte[recoveredDataLen];
// Verify signature and get recovered data in second call
rv = pkcs11.C_VerifyRecover(session, signature, Convert.ToUInt32(signature.Length), recoveredData, ref recoveredDataLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Do something interesting with verification result and recovered data
Assert.IsTrue(Convert.ToBase64String(sourceData) == Convert.ToBase64String(recoveredData));
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());
}
}