Data Structures
union	EFI_HASH2_OUTPUT

struct	_EFI_HASH2_PROTOCOL

Macros
#define	EFI_HASH2_SERVICE_BINDING_PROTOCOL_GUID

#define	EFI_HASH2_PROTOCOL_GUID

Typedefs
typedef struct _EFI_HASH2_PROTOCOL	EFI_HASH2_PROTOCOL

typedef UINT8	EFI_MD5_HASH2 [16]

typedef UINT8	EFI_SHA1_HASH2 [20]

typedef UINT8	EFI_SHA224_HASH2 [28]

typedef UINT8	EFI_SHA256_HASH2 [32]

typedef UINT8	EFI_SHA384_HASH2 [48]

typedef UINT8	EFI_SHA512_HASH2 [64]

typedef EFI_STATUS(EFIAPI *	EFI_HASH2_GET_HASH_SIZE )(IN CONST EFI_HASH2_PROTOCOL This, IN CONST EFI_GUID HashAlgorithm, OUT UINTN *HashSize)

typedef EFI_STATUS(EFIAPI *	EFI_HASH2_HASH )(IN CONST EFI_HASH2_PROTOCOL This, IN CONST EFI_GUID HashAlgorithm, IN CONST UINT8 Message, IN UINTN MessageSize, IN OUT EFI_HASH2_OUTPUT Hash)

typedef EFI_STATUS(EFIAPI *	EFI_HASH2_HASH_INIT )(IN CONST EFI_HASH2_PROTOCOL This, IN CONST EFI_GUID HashAlgorithm)

typedef EFI_STATUS(EFIAPI *	EFI_HASH2_HASH_UPDATE )(IN CONST EFI_HASH2_PROTOCOL This, IN CONST UINT8 Message, IN UINTN MessageSize)

typedef EFI_STATUS(EFIAPI *	EFI_HASH2_HASH_FINAL )(IN CONST EFI_HASH2_PROTOCOL This, IN OUT EFI_HASH2_OUTPUT Hash)

Variables
EFI_GUID	gEfiHash2ServiceBindingProtocolGuid

EFI_GUID	gEfiHash2ProtocolGuid

Detailed Description

EFI_HASH2_SERVICE_BINDING_PROTOCOL as defined in UEFI 2.5. EFI_HASH2_PROTOCOL as defined in UEFI 2.5. The EFI Hash2 Service Binding Protocol is used to locate hashing services support provided by a driver and to create and destroy instances of the EFI Hash2 Protocol so that a multiple drivers can use the underlying hashing services. EFI_HASH2_PROTOCOL describes hashing functions for which the algorithm-required message padding and finalization are performed by the supporting driver.

Copyright (c) 2015, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Macro Definition Documentation

#define EFI_HASH2_PROTOCOL_GUID

Value:

{ \
    0x55b1d734, 0xc5e1, 0x49db, { 0x96, 0x47, 0xb1, 0x6a, 0xfb, 0xe, 0x30, 0x5b } \
  }

#define EFI_HASH2_SERVICE_BINDING_PROTOCOL_GUID

Value:

{ \
    0xda836f8d, 0x217f, 0x4ca0, { 0x99, 0xc2, 0x1c, 0xa4, 0xe1, 0x60, 0x77, 0xea } \
  }

Typedef Documentation

typedef EFI_STATUS(EFIAPI * EFI_HASH2_GET_HASH_SIZE)(IN CONST EFI_HASH2_PROTOCOL *This, IN CONST EFI_GUID *HashAlgorithm, OUT UINTN *HashSize)

Returns the size of the hash which results from a specific algorithm.

Parameters

[in]	This	Points to this instance of EFI_HASH2_PROTOCOL.
[in]	HashAlgorithm	Points to the EFI_GUID which identifies the algorithm to use.
[out]	HashSize	Holds the returned size of the algorithm's hash.

Return values

EFI_SUCCESS	Hash size returned successfully.
EFI_INVALID_PARAMETER	This or HashSize is NULL.
EFI_UNSUPPORTED	The algorithm specified by HashAlgorithm is not supported by this driver or HashAlgorithm is null.

typedef EFI_STATUS(EFIAPI * EFI_HASH2_HASH)(IN CONST EFI_HASH2_PROTOCOL *This, IN CONST EFI_GUID *HashAlgorithm, IN CONST UINT8 *Message, IN UINTN MessageSize, IN OUT EFI_HASH2_OUTPUT *Hash)

Creates a hash for the specified message text. The hash is not extendable. The output is final with any algorithm-required padding added by the function.

Parameters

[in]	This	Points to this instance of EFI_HASH2_PROTOCOL.
[in]	HashAlgorithm	Points to the EFI_GUID which identifies the algorithm to use.
[in]	Message	Points to the start of the message.
[in]	MessageSize	The size of Message, in bytes.
[in,out]	Hash	On input, points to a caller-allocated buffer of the size returned by GetHashSize() for the specified HashAlgorithm. On output, the buffer holds the resulting hash computed from the message.

Return values

EFI_SUCCESS	Hash returned successfully.
EFI_INVALID_PARAMETER	This or Hash is NULL.
EFI_UNSUPPORTED	The algorithm specified by HashAlgorithm is not supported by this driver or HashAlgorithm is Null.
EFI_OUT_OF_RESOURCES	Some resource required by the function is not available or MessageSize is greater than platform maximum.

typedef EFI_STATUS(EFIAPI * EFI_HASH2_HASH_FINAL)(IN CONST EFI_HASH2_PROTOCOL *This, IN OUT EFI_HASH2_OUTPUT *Hash)

Finalizes a hash operation in progress and returns calculation result. The output is final with any necessary padding added by the function. The hash may not be further updated or extended after HashFinal().

Parameters

[in]	This	Points to this instance of EFI_HASH2_PROTOCOL.
[in,out]	Hash	On input, points to a caller-allocated buffer of the size returned by GetHashSize() for the specified HashAlgorithm specified in preceding HashInit(). On output, the buffer holds the resulting hash computed from the message.

Return values

EFI_SUCCESS	Hash returned successfully.
EFI_INVALID_PARAMETER	This or Hash is NULL.
EFI_NOT_READY	This call was not preceded by a valid call to HashInit() and at least one call to HashUpdate(), or the operation in progress was canceled by a call to Hash() on the same instance.

typedef EFI_STATUS(EFIAPI * EFI_HASH2_HASH_INIT)(IN CONST EFI_HASH2_PROTOCOL *This, IN CONST EFI_GUID *HashAlgorithm)

This function must be called to initialize a digest calculation to be subsequently performed using the EFI_HASH2_PROTOCOL functions HashUpdate() and HashFinal().

Parameters

[in]	This	Points to this instance of EFI_HASH2_PROTOCOL.
[in]	HashAlgorithm	Points to the EFI_GUID which identifies the algorithm to use.

Return values

EFI_SUCCESS	Initialized successfully.
EFI_INVALID_PARAMETER	This is NULL.
EFI_UNSUPPORTED	The algorithm specified by HashAlgorithm is not supported by this driver or HashAlgorithm is Null.
EFI_OUT_OF_RESOURCES	Process failed due to lack of required resource.
EFI_ALREADY_STARTED	This function is called when the operation in progress is still in processing Hash(), or HashInit() is already called before and not terminated by HashFinal() yet on the same instance.

typedef EFI_STATUS(EFIAPI * EFI_HASH2_HASH_UPDATE)(IN CONST EFI_HASH2_PROTOCOL *This, IN CONST UINT8 *Message, IN UINTN MessageSize)

Updates the hash of a computation in progress by adding a message text.

Parameters

[in]	This	Points to this instance of EFI_HASH2_PROTOCOL.
[in]	Message	Points to the start of the message.
[in]	MessageSize	The size of Message, in bytes.

Return values

EFI_SUCCESS	Digest in progress updated successfully.
EFI_INVALID_PARAMETER	This or Hash is NULL.
EFI_OUT_OF_RESOURCES	Some resource required by the function is not available or MessageSize is greater than platform maximum.
EFI_NOT_READY	This call was not preceded by a valid call to HashInit(), or the operation in progress was terminated by a call to Hash() or HashFinal() on the same instance.

typedef struct _EFI_HASH2_PROTOCOL EFI_HASH2_PROTOCOL

typedef UINT8 EFI_MD5_HASH2[16]

typedef UINT8 EFI_SHA1_HASH2[20]

typedef UINT8 EFI_SHA224_HASH2[28]

typedef UINT8 EFI_SHA256_HASH2[32]

typedef UINT8 EFI_SHA384_HASH2[48]

typedef UINT8 EFI_SHA512_HASH2[64]

Variable Documentation

EFI_GUID gEfiHash2ProtocolGuid

EFI_GUID gEfiHash2ServiceBindingProtocolGuid

Data Structures

Macros

Typedefs

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Variable Documentation