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md5_mb.h
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md5_mb.h
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/**********************************************************************
Copyright(c) 2011-2024 Intel Corporation All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**********************************************************************/
#ifndef _MD5_MB_H_
#define _MD5_MB_H_
/**
* @file md5_mb.h
* @brief Multi-buffer CTX API MD5 function prototypes and structures
* @warning: MD5 is considered unsafe, so it is recommended to use SHA256 instead.
*
* Interface for multi-buffer MD5 functions
*
* <b> Multi-buffer MD5 Entire or First-Update..Update-Last </b>
*
* The interface to this multi-buffer hashing code is carried out through the
* context-level (CTX) init, submit and flush functions and the ISAL_MD5_HASH_CTX_MGR and
* ISAL_MD5_HASH_CTX objects. Numerous ISAL_MD5_HASH_CTX objects may be instantiated by the
* application for use with a single ISAL_MD5_HASH_CTX_MGR.
*
* The CTX interface functions carry out the initialization and padding of the jobs
* entered by the user and add them to the multi-buffer manager. The lower level "scheduler"
* layer then processes the jobs in an out-of-order manner. The scheduler layer functions
* are internal and are not intended to be invoked directly. Jobs can be submitted
* to a CTX as a complete buffer to be hashed, using the ISAL_HASH_ENTIRE flag, or as partial
* jobs which can be started using the ISAL_HASH_FIRST flag, and later resumed or finished
* using the ISAL_HASH_UPDATE and ISAL_HASH_LAST flags respectively.
*
* <b>Note:</b> The submit function does not require data buffers to be block sized.
*
* The MD5 CTX interface functions are available for 4 architectures: SSE, AVX, AVX2 and
* AVX512. In addition, a multibinary interface is provided, which selects the appropriate
* architecture-specific function at runtime.
*
* <b>Usage:</b> The application creates a ISAL_MD5_HASH_CTX_MGR object and initializes it
* with a call to md5_ctx_mgr_init*() function, where henceforth "*" stands for the
* relevant suffix for each architecture; _sse, _avx, _avx2, _avx512 (or no suffix for the
* multibinary version). The ISAL_MD5_HASH_CTX_MGR object will be used to schedule processor
* resources, with up to 8 ISAL_MD5_HASH_CTX objects (or 16 in AVX2 case, 32 in AVX512 case)
* being processed at a time.
*
* Each ISAL_MD5_HASH_CTX must be initialized before first use by the isal_hash_ctx_init macro
* defined in multi_buffer.h. After initialization, the application may begin computing
* a hash by giving the ISAL_MD5_HASH_CTX to a ISAL_MD5_HASH_CTX_MGR using the submit functions
* md5_ctx_mgr_submit*() with the ISAL_HASH_FIRST flag set. When the ISAL_MD5_HASH_CTX is
* returned to the application (via this or a later call to md5_ctx_mgr_submit*() or
* md5_ctx_mgr_flush*()), the application can then re-submit it with another call to
* md5_ctx_mgr_submit*(), but without the ISAL_HASH_FIRST flag set.
*
* Ideally, on the last buffer for that hash, md5_ctx_mgr_submit_sse is called with
* ISAL_HASH_LAST, although it is also possible to submit the hash with ISAL_HASH_LAST and a zero
* length if necessary. When a ISAL_MD5_HASH_CTX is returned after having been submitted with
* ISAL_HASH_LAST, it will contain a valid hash. The ISAL_MD5_HASH_CTX can be reused immediately
* by submitting with ISAL_HASH_FIRST.
*
* For example, you would submit hashes with the following flags for the following numbers
* of buffers:
* <ul>
* <li> one buffer: ISAL_HASH_FIRST | ISAL_HASH_LAST (or, equivalently, ISAL_HASH_ENTIRE)
* <li> two buffers: ISAL_HASH_FIRST, ISAL_HASH_LAST
* <li> three buffers: ISAL_HASH_FIRST, ISAL_HASH_UPDATE, ISAL_HASH_LAST
* etc.
* </ul>
*
* The order in which MD5_CTX objects are returned is in general different from the order
* in which they are submitted.
*
* A few possible error conditions exist:
* <ul>
* <li> Submitting flags other than the allowed entire/first/update/last values
* <li> Submitting a context that is currently being managed by a ISAL_MD5_HASH_CTX_MGR.
* <li> Submitting a context after ISAL_HASH_LAST is used but before ISAL_HASH_FIRST is set.
* </ul>
*
* These error conditions are reported by returning the ISAL_MD5_HASH_CTX immediately after
* a submit with its error member set to a non-zero error code (defined in
* multi_buffer.h). No changes are made to the ISAL_MD5_HASH_CTX_MGR in the case of an
* error; no processing is done for other hashes.
*
*/
#include <stdint.h>
#include <string.h>
#include "multi_buffer.h"
#include "types.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Define enums from API v2.24, so applications that were using this version
* will still be compiled successfully.
* This list does not need to be extended for new definitions.
*/
#ifndef NO_COMPAT_ISAL_CRYPTO_API_2_24
/***** Previous hash constants and typedefs *****/
#define MD5_DIGEST_NWORDS ISAL_MD5_DIGEST_NWORDS
#define MD5_MAX_LANES ISAL_MD5_MAX_LANES
#define MD5_MIN_LANES ISAL_MD5_MIN_LANES
#define MD5_BLOCK_SIZE ISAL_MD5_BLOCK_SIZE
#define MD5_PADLENGTHFIELD_SIZE ISAL_MD5_PADLENGTHFIELD_SIZE
#define MD5_HASH_CTX ISAL_MD5_HASH_CTX
#define md5_digest_array isal_md5_digest_array
#define MD5_HASH_CTX_MGR ISAL_MD5_HASH_CTX_MGR
#define MD5_JOB ISAL_MD5_JOB
#define MD5_WORD_T ISAL_MD5_WORD_T
#define MD5_MB_ARGS_X32 ISAL_MD5_MB_ARGS_X32
#define MD5_LANE_DATA ISAL_MD5_LANE_DATA
#define MD5_MB_JOB_MGR ISAL_MD5_MB_JOB_MGR
#endif /* !NO_COMPAT_ISAL_CRYPTO_API_2_24 */
// Hash Constants and Typedefs
#define ISAL_MD5_DIGEST_NWORDS 4
#define ISAL_MD5_MAX_LANES 32
#define ISAL_MD5_MIN_LANES 8
#define ISAL_MD5_BLOCK_SIZE 64
#define ISAL_MD5_PADLENGTHFIELD_SIZE 8
typedef uint32_t isal_md5_digest_array[ISAL_MD5_DIGEST_NWORDS][ISAL_MD5_MAX_LANES];
typedef uint32_t ISAL_MD5_WORD_T;
/** @brief Scheduler layer - Holds info describing a single MD5 job for the multi-buffer manager */
typedef struct {
uint8_t *buffer; //!< pointer to data buffer for this job
uint32_t len; //!< length of buffer for this job in blocks.
DECLARE_ALIGNED(uint32_t result_digest[ISAL_MD5_DIGEST_NWORDS], 64);
//!< Digest output (in array of little-endian double words, different than SHA's).
ISAL_JOB_STS status; //!< output job status
void *user_data; //!< pointer for user's job-related data
} ISAL_MD5_JOB;
/** @brief Scheduler layer - Holds arguments for submitted MD5 job */
typedef struct {
isal_md5_digest_array digest;
uint8_t *data_ptr[ISAL_MD5_MAX_LANES];
} ISAL_MD5_MB_ARGS_X32;
/** @brief Scheduler layer - Lane data */
typedef struct {
ISAL_MD5_JOB *job_in_lane;
} ISAL_MD5_LANE_DATA;
/** @brief Scheduler layer - Holds state for multi-buffer MD5 jobs */
typedef struct {
ISAL_MD5_MB_ARGS_X32 args;
uint32_t lens[ISAL_MD5_MAX_LANES];
uint64_t unused_lanes[4]; //!< each byte or nibble is index (0...31 or 15) of unused lanes.
ISAL_MD5_LANE_DATA ldata[ISAL_MD5_MAX_LANES];
uint32_t num_lanes_inuse;
} ISAL_MD5_MB_JOB_MGR;
/** @brief Context layer - Holds state for multi-buffer MD5 jobs */
typedef struct {
ISAL_MD5_MB_JOB_MGR mgr;
} ISAL_MD5_HASH_CTX_MGR;
/** @brief Context layer - Holds info describing a single MD5 job for the multi-buffer CTX manager
*/
typedef struct {
ISAL_MD5_JOB job; // Must be at struct offset 0.
ISAL_HASH_CTX_STS status; //!< Context status flag
ISAL_HASH_CTX_ERROR error; //!< Context error flag
uint64_t total_length; //!< Running counter of length processed for this CTX's job
const void *incoming_buffer; //!< pointer to data input buffer for this CTX's job
uint32_t incoming_buffer_length; //!< length of buffer for this job in bytes.
uint8_t partial_block_buffer[ISAL_MD5_BLOCK_SIZE * 2]; //!< CTX partial blocks
uint32_t partial_block_buffer_length;
void *user_data; //!< pointer for user to keep any job-related data
} ISAL_MD5_HASH_CTX;
/******************** multibinary function prototypes **********************/
/**
* @brief Initialize the MD5 multi-buffer manager structure.
* @requires SSE4.1 or AVX or AVX2 or AVX512
* @deprecated Please use isal_md5_ctx_mgr_init() instead.
*
* @param mgr Structure holding context level state info
* @returns void
*/
ISAL_DEPRECATED("Please use isal_md5_ctx_mgr_init() instead")
void
md5_ctx_mgr_init(ISAL_MD5_HASH_CTX_MGR *mgr);
/**
* @brief Submit a new MD5 job to the multi-buffer manager.
* @requires SSE4.1 or AVX or AVX2 or AVX512
* @deprecated Please use isal_md5_ctx_mgr_submit() instead.
*
* @param mgr Structure holding context level state info
* @param ctx Structure holding ctx job info
* @param buffer Pointer to buffer to be processed
* @param len Length of buffer (in bytes) to be processed
* @param flags Input flag specifying job type (first, update, last or entire)
* @returns NULL if no jobs complete or pointer to jobs structure.
*/
ISAL_DEPRECATED("Please use isal_md5_ctx_mgr_submit() instead")
ISAL_MD5_HASH_CTX *
md5_ctx_mgr_submit(ISAL_MD5_HASH_CTX_MGR *mgr, ISAL_MD5_HASH_CTX *ctx, const void *buffer,
uint32_t len, ISAL_HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires SSE4.1 or AVX or AVX2 or AVX512
* @deprecated Please use isal_md5_ctx_mgr_submit() instead.
*
* @param mgr Structure holding context level state info
* @returns NULL if no jobs to complete or pointer to jobs structure.
*/
ISAL_DEPRECATED("Please use isal_md5_ctx_mgr_submit() instead")
ISAL_MD5_HASH_CTX *
md5_ctx_mgr_flush(ISAL_MD5_HASH_CTX_MGR *mgr);
/**
* @brief Initialize the MD5 multi-buffer manager structure.
* @requires SSE4.1 for x86 or ASIMD for ARM
*
* @param[in] mgr Structure holding context level state info
* @return Operation status
* @retval 0 on success
* @retval Non-zero \a ISAL_CRYPTO_ERR on failure
*/
int
isal_md5_ctx_mgr_init(ISAL_MD5_HASH_CTX_MGR *mgr);
/**
* @brief Submit a new MD5 job to the multi-buffer manager.
* @requires SSE4.1 for x86 or ASIMD for ARM
*
* @param[in] mgr Structure holding context level state info
* @param[in] ctx_in Pointer to structure holding input job ctx info
* @param[out] ctx_out Pointer address to output job ctx info.
* Modified to point to completed job structure or
* NULL if no jobs completed.
* @param[in] buffer Pointer to buffer to be processed
* @param[in] len Length of buffer (in bytes) to be processed
* @param[in] flags Input flag specifying job type (first, update, last or entire)
* @return Operation status
* @retval 0 on success
* @retval Non-zero \a ISAL_CRYPTO_ERR on failure
*/
int
isal_md5_ctx_mgr_submit(ISAL_MD5_HASH_CTX_MGR *mgr, ISAL_MD5_HASH_CTX *ctx_in,
ISAL_MD5_HASH_CTX **ctx_out, const void *buffer, const uint32_t len,
const ISAL_HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires SSE4.1 for x86 or ASIMD for ARM
*
* @param[in] mgr Structure holding context level state info
* @param[out] ctx_out Pointer address to output job ctx info.
* Modified to point to completed job structure or NULL
* if no jobs complete.
* @return Operation status
* @retval 0 on success
* @retval Non-zero \a ISAL_CRYPTO_ERR on failure
*/
int
isal_md5_ctx_mgr_flush(ISAL_MD5_HASH_CTX_MGR *mgr, ISAL_MD5_HASH_CTX **ctx_out);
#ifdef __cplusplus
}
#endif
#endif // _MD5_MB_H_