/**
Generate a random data for IV
@param[in] IvBuffer The pointer of the IV buffer.
@param[in] IvSize The IV size.
@retval EFI_SUCCESS Create a random data for IV.
@retval otherwise Failed.
**/
EFI_STATUS
IkeGenerateIv (
IN UINT8 *IvBuffer,
IN UINTN IvSize
)
{
return IpSecCryptoIoGenerateRandomBytes (IvBuffer, IvSize);
}
/**
Generate a random data for IV. If the IvSize is zero, not needed to create
IV and return EFI_SUCCESS.
@param[in] IvBuffer The pointer of the IV buffer.
@param[in] IvSize The IV size in bytes.
@retval EFI_SUCCESS Create a random data for IV.
**/
EFI_STATUS
IpSecGenerateIv (
IN UINT8 *IvBuffer,
IN UINTN IvSize
)
{
if (IvSize != 0) {
return IpSecCryptoIoGenerateRandomBytes (IvBuffer, IvSize);
}
return EFI_SUCCESS;
}
/**
Call Crypto Lib to generate a random value with eight-octet length.
@return the 64 byte vaule.
**/
UINT64
IkeGenerateCookie (
VOID
)
{
UINT64 Cookie;
EFI_STATUS Status;
Status = IpSecCryptoIoGenerateRandomBytes ((UINT8 *)&Cookie, sizeof (UINT64));
if (EFI_ERROR (Status)) {
return 0;
} else {
return Cookie;
}
}
/**
Generate the random data for Nonce payload.
@param[in] NonceSize Size of the data in bytes.
@return Buffer which contains the random data of the spcified size.
**/
UINT8 *
IkeGenerateNonce (
IN UINTN NonceSize
)
{
UINT8 *Nonce;
EFI_STATUS Status;
Nonce = AllocateZeroPool (NonceSize);
if (Nonce == NULL) {
return NULL;
}
Status = IpSecCryptoIoGenerateRandomBytes (Nonce, NonceSize);
if (EFI_ERROR (Status)) {
FreePool (Nonce);
return NULL;
} else {
return Nonce;
}
}
