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#ifndef _MD5_MB_H_
#define _MD5_MB_H_
/**
* @file md5_mb.h
* @brief Multi-buffer CTX API MD5 function prototypes and structures
*
* Interface for multi-buffer MD5 functions
*
* Multi-buffer MD5 Entire or First-Update..Update-Last
*
* The interface to this multi-buffer hashing code is carried out through the
* context-level (CTX) init, submit and flush functions and the MD5_HASH_CTX_MGR and
* MD5_HASH_CTX objects. Numerous MD5_HASH_CTX objects may be instantiated by the
* application for use with a single 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 HASH_ENTIRE flag, or as partial
* jobs which can be started using the HASH_FIRST flag, and later resumed or finished
* using the HASH_UPDATE and HASH_LAST flags respectively.
*
* Note: 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.
*
* Usage: The application creates a 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 MD5_HASH_CTX_MGR object will be used to schedule processor
* resources, with up to 8 MD5_HASH_CTX objects (or 16 in AVX2 case, 32 in AVX512 case)
* being processed at a time.
*
* Each MD5_HASH_CTX must be initialized before first use by the hash_ctx_init macro
* defined in multi_buffer.h. After initialization, the application may begin computing
* a hash by giving the MD5_HASH_CTX to a MD5_HASH_CTX_MGR using the submit functions
* md5_ctx_mgr_submit*() with the HASH_FIRST flag set. When the 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 HASH_FIRST flag set.
*
* Ideally, on the last buffer for that hash, md5_ctx_mgr_submit_sse is called with
* HASH_LAST, although it is also possible to submit the hash with HASH_LAST and a zero
* length if necessary. When a MD5_HASH_CTX is returned after having been submitted with
* HASH_LAST, it will contain a valid hash. The MD5_HASH_CTX can be reused immediately
* by submitting with HASH_FIRST.
*
* For example, you would submit hashes with the following flags for the following numbers
* of buffers:
*
* - one buffer: HASH_FIRST | HASH_LAST (or, equivalently, HASH_ENTIRE)
*
- two buffers: HASH_FIRST, HASH_LAST
*
- three buffers: HASH_FIRST, HASH_UPDATE, HASH_LAST
* etc.
*
*
* 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:
*
* - Submitting flags other than the allowed entire/first/update/last values
*
- Submitting a context that is currently being managed by a MD5_HASH_CTX_MGR.
*
- Submitting a context after HASH_LAST is used but before HASH_FIRST is set.
*
*
* These error conditions are reported by returning the 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 MD5_HASH_CTX_MGR in the case of an
* error; no processing is done for other hashes.
*
*/
#include
#include "multi_buffer.h"
#include "types.h"
#ifdef __cplusplus
extern "C" {
#endif
// Hash Constants and Typedefs
#define MD5_DIGEST_NWORDS 4
#define MD5_MAX_LANES 32
#define MD5_MIN_LANES 8
#define MD5_BLOCK_SIZE 64
#define MD5_LOG2_BLOCK_SIZE 6
#define MD5_PADLENGTHFIELD_SIZE 8
#define MD5_INITIAL_DIGEST \
0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476
typedef uint32_t md5_digest_array[MD5_DIGEST_NWORDS][MD5_MAX_LANES];
typedef uint32_t 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[MD5_DIGEST_NWORDS],64);
JOB_STS status; //!< output job status
void* user_data; //!< pointer for user's job-related data
} MD5_JOB;
/** @brief Scheduler layer - Holds arguments for submitted MD5 job */
typedef struct {
md5_digest_array digest;
uint8_t* data_ptr[MD5_MAX_LANES];
} MD5_MB_ARGS_X32;
/** @brief Scheduler layer - Lane data */
typedef struct {
MD5_JOB *job_in_lane;
} MD5_LANE_DATA;
/** @brief Scheduler layer - Holds state for multi-buffer MD5 jobs */
typedef struct {
MD5_MB_ARGS_X32 args;
uint32_t lens[MD5_MAX_LANES];
uint64_t unused_lanes[4]; //!< each byte or nibble is index (0...31 or 15) of unused lanes.
MD5_LANE_DATA ldata[MD5_MAX_LANES];
uint32_t num_lanes_inuse;
} MD5_MB_JOB_MGR;
/** @brief Context layer - Holds state for multi-buffer MD5 jobs */
typedef struct {
MD5_MB_JOB_MGR mgr;
} MD5_HASH_CTX_MGR;
/** @brief Context layer - Holds info describing a single MD5 job for the multi-buffer CTX manager */
typedef struct {
MD5_JOB job; // Must be at struct offset 0.
HASH_CTX_STS status; //!< Context status flag
HASH_CTX_ERROR error; //!< Context error flag
uint32_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[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
} MD5_HASH_CTX;
/*******************************************************************
* CTX level API function prototypes
******************************************************************/
/**
* @brief Initialize the context level MD5 multi-buffer manager structure.
* @requires SSE4.1
*
* @param mgr Structure holding context level state info
* @returns void
*/
void md5_ctx_mgr_init_sse (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Submit a new MD5 job to the context level multi-buffer manager.
* @requires SSE4.1
*
* @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.
*/
MD5_HASH_CTX* md5_ctx_mgr_submit_sse (MD5_HASH_CTX_MGR* mgr, MD5_HASH_CTX* ctx,
const void* buffer, uint32_t len, HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires SSE4.1
*
* @param mgr Structure holding context level state info
* @returns NULL if no jobs to complete or pointer to jobs structure.
*/
MD5_HASH_CTX* md5_ctx_mgr_flush_sse (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Initialize the MD5 multi-buffer manager structure.
* @requires AVX
*
* @param mgr Structure holding context level state info
* @returns void
*/
void md5_ctx_mgr_init_avx (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Submit a new MD5 job to the multi-buffer manager.
* @requires AVX
*
* @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.
*/
MD5_HASH_CTX* md5_ctx_mgr_submit_avx (MD5_HASH_CTX_MGR* mgr, MD5_HASH_CTX* ctx,
const void* buffer, uint32_t len, HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires AVX
*
* @param mgr Structure holding context level state info
* @returns NULL if no jobs to complete or pointer to jobs structure.
*/
MD5_HASH_CTX* md5_ctx_mgr_flush_avx (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Initialize the MD5 multi-buffer manager structure.
* @requires AVX2
*
* @param mgr Structure holding context level state info
* @returns void
*/
void md5_ctx_mgr_init_avx2 (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Submit a new MD5 job to the multi-buffer manager.
* @requires AVX2
*
* @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.
*/
MD5_HASH_CTX* md5_ctx_mgr_submit_avx2 (MD5_HASH_CTX_MGR* mgr, MD5_HASH_CTX* ctx,
const void* buffer, uint32_t len, HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires AVX2
*
* @param mgr Structure holding context level state info
* @returns NULL if no jobs to complete or pointer to jobs structure.
*/
MD5_HASH_CTX* md5_ctx_mgr_flush_avx2 (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Initialize the MD5 multi-buffer manager structure.
* @requires AVX512
*
* @param mgr Structure holding context level state info
* @returns void
*/
void md5_ctx_mgr_init_avx512 (MD5_HASH_CTX_MGR* mgr);
/**
* @brief Submit a new MD5 job to the multi-buffer manager.
* @requires AVX512
*
* @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.
*/
MD5_HASH_CTX* md5_ctx_mgr_submit_avx512 (MD5_HASH_CTX_MGR* mgr, MD5_HASH_CTX* ctx,
const void* buffer, uint32_t len, HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires AVX512
*
* @param mgr Structure holding context level state info
* @returns NULL if no jobs to complete or pointer to jobs structure.
*/
MD5_HASH_CTX* md5_ctx_mgr_flush_avx512 (MD5_HASH_CTX_MGR* mgr);
/******************** multibinary function prototypes **********************/
/**
* @brief Initialize the MD5 multi-buffer manager structure.
* @requires SSE4.1 or AVX or AVX2 or AVX512
*
* @param mgr Structure holding context level state info
* @returns void
*/
void md5_ctx_mgr_init (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
*
* @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.
*/
MD5_HASH_CTX* md5_ctx_mgr_submit (MD5_HASH_CTX_MGR* mgr, MD5_HASH_CTX* ctx,
const void* buffer, uint32_t len, HASH_CTX_FLAG flags);
/**
* @brief Finish all submitted MD5 jobs and return when complete.
* @requires SSE4.1 or AVX or AVX2 or AVX512
*
* @param mgr Structure holding context level state info
* @returns NULL if no jobs to complete or pointer to jobs structure.
*/
MD5_HASH_CTX* md5_ctx_mgr_flush (MD5_HASH_CTX_MGR* mgr);
/*******************************************************************
* Scheduler (internal) level out-of-order function prototypes
******************************************************************/
void md5_mb_mgr_init_sse (MD5_MB_JOB_MGR *state);
MD5_JOB* md5_mb_mgr_submit_sse (MD5_MB_JOB_MGR *state, MD5_JOB* job);
MD5_JOB* md5_mb_mgr_flush_sse (MD5_MB_JOB_MGR *state);
#define md5_mb_mgr_init_avx md5_mb_mgr_init_sse
MD5_JOB* md5_mb_mgr_submit_avx (MD5_MB_JOB_MGR *state, MD5_JOB* job);
MD5_JOB* md5_mb_mgr_flush_avx (MD5_MB_JOB_MGR *state);
void md5_mb_mgr_init_avx2 (MD5_MB_JOB_MGR *state);
MD5_JOB* md5_mb_mgr_submit_avx2 (MD5_MB_JOB_MGR *state, MD5_JOB* job);
MD5_JOB* md5_mb_mgr_flush_avx2 (MD5_MB_JOB_MGR *state);
void md5_mb_mgr_init_avx512 (MD5_MB_JOB_MGR *state);
MD5_JOB* md5_mb_mgr_submit_avx512 (MD5_MB_JOB_MGR *state, MD5_JOB* job);
MD5_JOB* md5_mb_mgr_flush_avx512 (MD5_MB_JOB_MGR *state);
#ifdef __cplusplus
}
#endif
#endif // _MD5_MB_H_