| public C_Digest ( ulong session, byte data, ulong dataLen, byte digest, ulong &digestLen ) : CKR | ||
| session | ulong | The session's handle |
| data | byte | Data to be digested |
| dataLen | ulong | The length of the data to be digested |
| digest | byte | /// If set to null then the length of digest is returned in "digestLen" parameter, without actually returning digest. /// If not set to null then "digestLen" parameter must contain the lenght of digest array and digest is returned in "digest" parameter. /// |
| digestLen | ulong | Location that holds the length of the message digest |
| return | CKR | |
public void _01_DigestSinglePartTest()
{
if (Platform.UnmanagedLongSize != 8 || 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.InitArgs80);
if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
Assert.Fail(rv.ToString());
// Find first slot with token present
ulong slotId = Helpers.GetUsableSlot(pkcs11);
ulong 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());
// Specify digesting mechanism (needs no parameter => no unamanaged memory is needed)
CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_SHA_1);
// Initialize digesting operation
rv = pkcs11.C_DigestInit(session, ref mechanism);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world");
// Get length of digest value in first call
ulong digestLen = 0;
rv = pkcs11.C_Digest(session, sourceData, Convert.ToUInt64(sourceData.Length), null, ref digestLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
Assert.IsTrue(digestLen > 0);
// Allocate array for digest value
byte[] digest = new byte[digestLen];
// Get digest value in second call
rv = pkcs11.C_Digest(session, sourceData, Convert.ToUInt64(sourceData.Length), digest, ref digestLen);
if (rv != CKR.CKR_OK)
Assert.Fail(rv.ToString());
// Do something interesting with digest value
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());
}
}