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/** @file
Runtime Cryptographic Driver Implementation, which produce one crypto
protocol.
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "CryptRuntime.h"
//
// The handle onto which the Runtime Crypt Protocol instance is installed
//
EFI_HANDLE mRuntimeCryptHandle = NULL;
//
// The Runtime Crypt Protocol instance produced by this driver
//
EFI_RUNTIME_CRYPT_PROTOCOL mRuntimeCryptProtocol = {
RuntimeCryptSha256GetContextSize,
RuntimeCryptSha256Init,
RuntimeCryptSha256Update,
RuntimeCryptSha256Final,
RuntimeCryptRsaNew,
RuntimeCryptRsaFree,
RuntimeCryptRsaSetKey,
RuntimeCryptRsaPkcs1Verify
};
/**
Retrieves the size, in bytes, of the context buffer required for SHA-256 operations.
@return The size, in bytes, of the context buffer required for SHA-256 operations.
**/
UINTN
EFIAPI
RuntimeCryptSha256GetContextSize (
VOID
)
{
return Sha256GetContextSize ();
}
/**
Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for
subsequent use.
If Sha256Context is NULL, then return FALSE.
@param[in, out] Sha256Context Pointer to SHA-256 Context being initialized.
@retval TRUE SHA-256 context initialization succeeded.
@retval FALSE SHA-256 context initialization failed.
**/
BOOLEAN
EFIAPI
RuntimeCryptSha256Init (
IN OUT VOID *Sha256Context
)
{
return Sha256Init (Sha256Context);
}
/**
Performs SHA-256 digest on a data buffer of the specified length. This function can
be called multiple times to compute the digest of long or discontinuous data streams.
If Sha256Context is NULL, then return FALSE.
@param[in, out] Sha256Context Pointer to the SHA-256 context.
@param[in] Data Pointer to the buffer containing the data to be hashed.
@param[in] DataLength Length of Data buffer in bytes.
@retval TRUE SHA-256 data digest succeeded.
@retval FALSE Invalid SHA-256 context. After Sha256Final function has been called, the
SHA-256 context cannot be reused.
**/
BOOLEAN
EFIAPI
RuntimeCryptSha256Update (
IN OUT VOID *Sha256Context,
IN CONST VOID *Data,
IN UINTN DataLength
)
{
return Sha256Update (Sha256Context, Data, DataLength);
}
/**
Completes SHA-256 hash computation and retrieves the digest value into the specified
memory. After this function has been called, the SHA-256 context cannot be used again.
If Sha256Context is NULL, then return FALSE.
If HashValue is NULL, then return FALSE.
@param[in, out] Sha256Context Pointer to SHA-256 context
@param[out] HashValue Pointer to a buffer that receives the SHA-256 digest
value (32 bytes).
@retval TRUE SHA-256 digest computation succeeded.
@retval FALSE SHA-256 digest computation failed.
**/
BOOLEAN
EFIAPI
RuntimeCryptSha256Final (
IN OUT VOID *Sha256Context,
OUT UINT8 *HashValue
)
{
return Sha256Final (Sha256Context, HashValue);
}
/**
Allocates and Initializes one RSA Context for subsequent use.
@return Pointer to the RSA Context that has been initialized.
If the allocations fails, RsaNew() returns NULL.
**/
VOID *
EFIAPI
RuntimeCryptRsaNew (
VOID
)
{
return RsaNew ();
}
/**
Release the specified RSA Context.
@param[in] RsaContext Pointer to the RSA context to be released.
**/
VOID
EFIAPI
RuntimeCryptRsaFree (
IN VOID *RsaContext
)
{
RsaFree (RsaContext);
}
/**
Sets the tag-designated RSA key component into the established RSA context from
the user-specified nonnegative integer (octet string format represented in RSA
PKCS#1).
If RsaContext is NULL, then return FALSE.
@param[in, out] RsaContext Pointer to RSA context being set.
@param[in] KeyTag Tag of RSA key component being set.
@param[in] BigNumber Pointer to octet integer buffer.
@param[in] BnLength Length of big number buffer in bytes.
@return TRUE RSA key component was set successfully.
@return FALSE Invalid RSA key component tag.
**/
BOOLEAN
EFIAPI
RuntimeCryptRsaSetKey (
IN OUT VOID *RsaContext,
IN RSA_KEY_TAG KeyTag,
IN CONST UINT8 *BigNumber,
IN UINTN BnLength
)
{
return RsaSetKey (RsaContext, KeyTag, BigNumber, BnLength);
}
/**
Verifies the RSA-SSA signature with EMSA-PKCS1-v1_5 encoding scheme defined in
RSA PKCS#1.
If RsaContext is NULL, then return FALSE.
If MessageHash is NULL, then return FALSE.
If Signature is NULL, then return FALSE.
If HashLength is not equal to the size of MD5, SHA-1 or SHA-256 digest, return FALSE.
@param[in] RsaContext Pointer to RSA context for signature verification.
@param[in] MessageHash Pointer to octet message hash to be checked.
@param[in] HashLength Length of the message hash in bytes.
@param[in] Signature Pointer to RSA PKCS1-v1_5 signature to be verified.
@param[in] SigLength Length of signature in bytes.
@return TRUE Valid signature encoded in PKCS1-v1_5.
@return FALSE Invalid signature or invalid RSA context.
**/
BOOLEAN
EFIAPI
RuntimeCryptRsaPkcs1Verify (
IN VOID *RsaContext,
IN CONST UINT8 *MessageHash,
IN UINTN HashLength,
IN CONST UINT8 *Signature,
IN UINTN SigLength
)
{
return RsaPkcs1Verify (RsaContext, MessageHash, HashLength, Signature, SigLength);
}
/**
Entry Point for Runtime Cryptographic Driver.
This function installs Runtime Crypt Protocol.
@param ImageHandle Image handle of this driver.
@param SystemTable a Pointer to the EFI System Table.
@retval EFI_SUCEESS Runtime Crypt Protocol is successfully installed
@return Others Some error occurs when installing Runtime Crypt Protocol.
**/
EFI_STATUS
EFIAPI
CryptRuntimeDriverInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Install the Runtime Crypt Protocol onto a new handle
//
Status = gBS->InstallMultipleProtocolInterfaces (
&mRuntimeCryptHandle,
&gEfiRuntimeCryptProtocolGuid,
&mRuntimeCryptProtocol,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}
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