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197 lines
7.9 KiB
C
197 lines
7.9 KiB
C
/** @file
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EFI_HASH2_SERVICE_BINDING_PROTOCOL as defined in UEFI 2.5.
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EFI_HASH2_PROTOCOL as defined in UEFI 2.5.
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The EFI Hash2 Service Binding Protocol is used to locate hashing services support
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provided by a driver and to create and destroy instances of the EFI Hash2 Protocol
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so that a multiple drivers can use the underlying hashing services.
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EFI_HASH2_PROTOCOL describes hashing functions for which the algorithm-required
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message padding and finalization are performed by the supporting driver.
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Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __EFI_HASH2_PROTOCOL_H__
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#define __EFI_HASH2_PROTOCOL_H__
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#define EFI_HASH2_SERVICE_BINDING_PROTOCOL_GUID \
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{ \
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0xda836f8d, 0x217f, 0x4ca0, { 0x99, 0xc2, 0x1c, 0xa4, 0xe1, 0x60, 0x77, 0xea } \
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}
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#define EFI_HASH2_PROTOCOL_GUID \
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{ \
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0x55b1d734, 0xc5e1, 0x49db, { 0x96, 0x47, 0xb1, 0x6a, 0xfb, 0xe, 0x30, 0x5b } \
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}
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#include <Protocol/Hash.h>
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//
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// NOTE:
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// Algorithms EFI_HASH_ALGORITHM_SHA1_NOPAD and
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// EFI_HASH_ALGORITHM_SHA256_NOPAD_GUID are not compatible with
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// EFI_HASH2_PROTOCOL and will return EFI_UNSUPPORTED if used with any
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// EFI_HASH2_PROTOCOL function.
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//
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//
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// Note: SHA-1 and MD5 are included for backwards compatibility.
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// New driver implementations are encouraged to consider stronger algorithms.
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//
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typedef struct _EFI_HASH2_PROTOCOL EFI_HASH2_PROTOCOL;
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typedef UINT8 EFI_MD5_HASH2[16];
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typedef UINT8 EFI_SHA1_HASH2[20];
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typedef UINT8 EFI_SHA224_HASH2[28];
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typedef UINT8 EFI_SHA256_HASH2[32];
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typedef UINT8 EFI_SHA384_HASH2[48];
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typedef UINT8 EFI_SHA512_HASH2[64];
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typedef union {
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EFI_MD5_HASH2 Md5Hash;
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EFI_SHA1_HASH2 Sha1Hash;
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EFI_SHA224_HASH2 Sha224Hash;
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EFI_SHA256_HASH2 Sha256Hash;
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EFI_SHA384_HASH2 Sha384Hash;
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EFI_SHA512_HASH2 Sha512Hash;
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} EFI_HASH2_OUTPUT;
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/**
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Returns the size of the hash which results from a specific algorithm.
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@param[in] This Points to this instance of EFI_HASH2_PROTOCOL.
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@param[in] HashAlgorithm Points to the EFI_GUID which identifies the algorithm to use.
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@param[out] HashSize Holds the returned size of the algorithm's hash.
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@retval EFI_SUCCESS Hash size returned successfully.
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@retval EFI_INVALID_PARAMETER This or HashSize is NULL.
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@retval EFI_UNSUPPORTED The algorithm specified by HashAlgorithm is not supported by this driver
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or HashAlgorithm is null.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_HASH2_GET_HASH_SIZE)(
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IN CONST EFI_HASH2_PROTOCOL *This,
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IN CONST EFI_GUID *HashAlgorithm,
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OUT UINTN *HashSize
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);
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/**
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Creates a hash for the specified message text. The hash is not extendable.
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The output is final with any algorithm-required padding added by the function.
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@param[in] This Points to this instance of EFI_HASH2_PROTOCOL.
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@param[in] HashAlgorithm Points to the EFI_GUID which identifies the algorithm to use.
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@param[in] Message Points to the start of the message.
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@param[in] MessageSize The size of Message, in bytes.
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@param[in,out] Hash On input, points to a caller-allocated buffer of the size
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returned by GetHashSize() for the specified HashAlgorithm.
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On output, the buffer holds the resulting hash computed from the message.
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@retval EFI_SUCCESS Hash returned successfully.
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@retval EFI_INVALID_PARAMETER This or Hash is NULL.
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@retval EFI_UNSUPPORTED The algorithm specified by HashAlgorithm is not supported by this driver
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or HashAlgorithm is Null.
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@retval EFI_OUT_OF_RESOURCES Some resource required by the function is not available
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or MessageSize is greater than platform maximum.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_HASH2_HASH)(
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IN CONST EFI_HASH2_PROTOCOL *This,
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IN CONST EFI_GUID *HashAlgorithm,
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IN CONST UINT8 *Message,
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IN UINTN MessageSize,
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IN OUT EFI_HASH2_OUTPUT *Hash
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);
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/**
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This function must be called to initialize a digest calculation to be subsequently performed using the
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EFI_HASH2_PROTOCOL functions HashUpdate() and HashFinal().
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@param[in] This Points to this instance of EFI_HASH2_PROTOCOL.
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@param[in] HashAlgorithm Points to the EFI_GUID which identifies the algorithm to use.
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@retval EFI_SUCCESS Initialized successfully.
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@retval EFI_INVALID_PARAMETER This is NULL.
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@retval EFI_UNSUPPORTED The algorithm specified by HashAlgorithm is not supported by this driver
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or HashAlgorithm is Null.
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@retval EFI_OUT_OF_RESOURCES Process failed due to lack of required resource.
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@retval EFI_ALREADY_STARTED This function is called when the operation in progress is still in processing Hash(),
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or HashInit() is already called before and not terminated by HashFinal() yet on the same instance.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_HASH2_HASH_INIT)(
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IN CONST EFI_HASH2_PROTOCOL *This,
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IN CONST EFI_GUID *HashAlgorithm
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);
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/**
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Updates the hash of a computation in progress by adding a message text.
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@param[in] This Points to this instance of EFI_HASH2_PROTOCOL.
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@param[in] Message Points to the start of the message.
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@param[in] MessageSize The size of Message, in bytes.
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@retval EFI_SUCCESS Digest in progress updated successfully.
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@retval EFI_INVALID_PARAMETER This or Hash is NULL.
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@retval EFI_OUT_OF_RESOURCES Some resource required by the function is not available
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or MessageSize is greater than platform maximum.
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@retval EFI_NOT_READY This call was not preceded by a valid call to HashInit(),
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or the operation in progress was terminated by a call to Hash() or HashFinal() on the same instance.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_HASH2_HASH_UPDATE)(
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IN CONST EFI_HASH2_PROTOCOL *This,
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IN CONST UINT8 *Message,
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IN UINTN MessageSize
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);
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/**
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Finalizes a hash operation in progress and returns calculation result.
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The output is final with any necessary padding added by the function.
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The hash may not be further updated or extended after HashFinal().
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@param[in] This Points to this instance of EFI_HASH2_PROTOCOL.
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@param[in,out] Hash On input, points to a caller-allocated buffer of the size
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returned by GetHashSize() for the specified HashAlgorithm specified in preceding HashInit().
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On output, the buffer holds the resulting hash computed from the message.
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@retval EFI_SUCCESS Hash returned successfully.
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@retval EFI_INVALID_PARAMETER This or Hash is NULL.
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@retval EFI_NOT_READY This call was not preceded by a valid call to HashInit() and at least one call to HashUpdate(),
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or the operation in progress was canceled by a call to Hash() on the same instance.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_HASH2_HASH_FINAL)(
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IN CONST EFI_HASH2_PROTOCOL *This,
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IN OUT EFI_HASH2_OUTPUT *Hash
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);
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///
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/// This protocol describes hashing functions for which the algorithm-required message padding and
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/// finalization are performed by the supporting driver.
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///
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struct _EFI_HASH2_PROTOCOL {
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EFI_HASH2_GET_HASH_SIZE GetHashSize;
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EFI_HASH2_HASH Hash;
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EFI_HASH2_HASH_INIT HashInit;
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EFI_HASH2_HASH_UPDATE HashUpdate;
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EFI_HASH2_HASH_FINAL HashFinal;
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};
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extern EFI_GUID gEfiHash2ServiceBindingProtocolGuid;
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extern EFI_GUID gEfiHash2ProtocolGuid;
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#endif
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