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151 lines
6.3 KiB
C
151 lines
6.3 KiB
C
/** @file
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EFI_RNG_PROTOCOL as defined in UEFI 2.4.
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The UEFI Random Number Generator Protocol is used to provide random bits for use
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in applications, or entropy for seeding other random number generators.
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Copyright (c) 2013 - 2018, 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_RNG_PROTOCOL_H__
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#define __EFI_RNG_PROTOCOL_H__
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///
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/// Global ID for the Random Number Generator Protocol
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///
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#define EFI_RNG_PROTOCOL_GUID \
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{ \
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0x3152bca5, 0xeade, 0x433d, {0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44 } \
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}
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typedef struct _EFI_RNG_PROTOCOL EFI_RNG_PROTOCOL;
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///
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/// A selection of EFI_RNG_PROTOCOL algorithms.
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/// The algorithms listed are optional, not meant to be exhaustive and be argmented by
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/// vendors or other industry standards.
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///
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typedef EFI_GUID EFI_RNG_ALGORITHM;
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///
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/// The algorithms corresponds to SP800-90 as defined in
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/// NIST SP 800-90, "Recommendation for Random Number Generation Using Deterministic Random
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/// Bit Generators", March 2007.
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///
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#define EFI_RNG_ALGORITHM_SP800_90_HASH_256_GUID \
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{ \
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0xa7af67cb, 0x603b, 0x4d42, {0xba, 0x21, 0x70, 0xbf, 0xb6, 0x29, 0x3f, 0x96 } \
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}
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#define EFI_RNG_ALGORITHM_SP800_90_HMAC_256_GUID \
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{ \
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0xc5149b43, 0xae85, 0x4f53, {0x99, 0x82, 0xb9, 0x43, 0x35, 0xd3, 0xa9, 0xe7 } \
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}
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#define EFI_RNG_ALGORITHM_SP800_90_CTR_256_GUID \
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{ \
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0x44f0de6e, 0x4d8c, 0x4045, {0xa8, 0xc7, 0x4d, 0xd1, 0x68, 0x85, 0x6b, 0x9e } \
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}
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///
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/// The algorithms correspond to X9.31 as defined in
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/// NIST, "Recommended Random Number Generator Based on ANSI X9.31 Appendix A.2.4 Using
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/// the 3-Key Triple DES and AES Algorithm", January 2005.
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///
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#define EFI_RNG_ALGORITHM_X9_31_3DES_GUID \
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{ \
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0x63c4785a, 0xca34, 0x4012, {0xa3, 0xc8, 0x0b, 0x6a, 0x32, 0x4f, 0x55, 0x46 } \
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}
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#define EFI_RNG_ALGORITHM_X9_31_AES_GUID \
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{ \
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0xacd03321, 0x777e, 0x4d3d, {0xb1, 0xc8, 0x20, 0xcf, 0xd8, 0x88, 0x20, 0xc9 } \
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}
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///
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/// The "raw" algorithm, when supported, is intended to provide entropy directly from
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/// the source, without it going through some deterministic random bit generator.
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///
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#define EFI_RNG_ALGORITHM_RAW \
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{ \
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0xe43176d7, 0xb6e8, 0x4827, {0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61 } \
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}
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/**
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Returns information about the random number generation implementation.
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@param[in] This A pointer to the EFI_RNG_PROTOCOL instance.
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@param[in,out] RNGAlgorithmListSize On input, the size in bytes of RNGAlgorithmList.
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On output with a return code of EFI_SUCCESS, the size
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in bytes of the data returned in RNGAlgorithmList. On output
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with a return code of EFI_BUFFER_TOO_SMALL,
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the size of RNGAlgorithmList required to obtain the list.
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@param[out] RNGAlgorithmList A caller-allocated memory buffer filled by the driver
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with one EFI_RNG_ALGORITHM element for each supported
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RNG algorithm. The list must not change across multiple
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calls to the same driver. The first algorithm in the list
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is the default algorithm for the driver.
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@retval EFI_SUCCESS The RNG algorithm list was returned successfully.
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@retval EFI_UNSUPPORTED The services is not supported by this driver.
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@retval EFI_DEVICE_ERROR The list of algorithms could not be retrieved due to a
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hardware or firmware error.
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@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
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@retval EFI_BUFFER_TOO_SMALL The buffer RNGAlgorithmList is too small to hold the result.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_RNG_GET_INFO) (
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IN EFI_RNG_PROTOCOL *This,
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IN OUT UINTN *RNGAlgorithmListSize,
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OUT EFI_RNG_ALGORITHM *RNGAlgorithmList
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);
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/**
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Produces and returns an RNG value using either the default or specified RNG algorithm.
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@param[in] This A pointer to the EFI_RNG_PROTOCOL instance.
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@param[in] RNGAlgorithm A pointer to the EFI_RNG_ALGORITHM that identifies the RNG
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algorithm to use. May be NULL in which case the function will
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use its default RNG algorithm.
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@param[in] RNGValueLength The length in bytes of the memory buffer pointed to by
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RNGValue. The driver shall return exactly this numbers of bytes.
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@param[out] RNGValue A caller-allocated memory buffer filled by the driver with the
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resulting RNG value.
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@retval EFI_SUCCESS The RNG value was returned successfully.
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@retval EFI_UNSUPPORTED The algorithm specified by RNGAlgorithm is not supported by
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this driver.
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@retval EFI_DEVICE_ERROR An RNG value could not be retrieved due to a hardware or
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firmware error.
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@retval EFI_NOT_READY There is not enough random data available to satisfy the length
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requested by RNGValueLength.
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@retval EFI_INVALID_PARAMETER RNGValue is NULL or RNGValueLength is zero.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_RNG_GET_RNG) (
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IN EFI_RNG_PROTOCOL *This,
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IN EFI_RNG_ALGORITHM *RNGAlgorithm, OPTIONAL
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IN UINTN RNGValueLength,
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OUT UINT8 *RNGValue
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);
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///
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/// The Random Number Generator (RNG) protocol provides random bits for use in
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/// applications, or entropy for seeding other random number generators.
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///
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struct _EFI_RNG_PROTOCOL {
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EFI_RNG_GET_INFO GetInfo;
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EFI_RNG_GET_RNG GetRNG;
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};
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extern EFI_GUID gEfiRngProtocolGuid;
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extern EFI_GUID gEfiRngAlgorithmSp80090Hash256Guid;
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extern EFI_GUID gEfiRngAlgorithmSp80090Hmac256Guid;
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extern EFI_GUID gEfiRngAlgorithmSp80090Ctr256Guid;
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extern EFI_GUID gEfiRngAlgorithmX9313DesGuid;
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extern EFI_GUID gEfiRngAlgorithmX931AesGuid;
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extern EFI_GUID gEfiRngAlgorithmRaw;
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#endif
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