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  #include <stdio.h>
  #include <stdlib.h>
  #include "md5_mb.h"
  
  #define TEST_LEN  (1024*1024)
  #define TEST_BUFS 100
  #ifndef RANDOMS
  # define RANDOMS  10
  #endif
  #ifndef TEST_SEED
  # define TEST_SEED 0x1234
  #endif
  
  static uint32_t digest_ref[TEST_BUFS][MD5_DIGEST_NWORDS];
  
  // Compare against reference function
  extern void md5_ref(uint8_t * input_data, uint32_t * digest, uint32_t len);
  
  // Generates pseudo-random data
  void rand_buffer(unsigned char *buf, const long buffer_size)
  {
  	long i;
  	for (i = 0; i < buffer_size; i++)
  		buf[i] = rand();
  }
  
  int main(void)
  {
  	MD5_HASH_CTX_MGR *mgr = NULL;
  	MD5_HASH_CTX ctxpool[TEST_BUFS];
  	uint32_t i, j, fail = 0;
  	unsigned char *bufs[TEST_BUFS];
  	uint32_t lens[TEST_BUFS];
  	unsigned int jobs, t;
  	uint8_t *tmp_buf;
  	int ret;
  
  	printf("multibinary_md5 test, %d sets of %dx%d max: ", RANDOMS, TEST_BUFS, TEST_LEN);
  
  	ret = posix_memalign((void *)&mgr, 16, sizeof(MD5_HASH_CTX_MGR));
  	if ((ret != 0) || (mgr == NULL)) {
  		printf("posix_memalign failed test aborted\n");
  		return 1;
  	}
  
  	md5_ctx_mgr_init(mgr);
  
  	srand(TEST_SEED);
  
  	for (i = 0; i < TEST_BUFS; i++) {
  		// Allocate  and fill buffer
  		bufs[i] = (unsigned char *)malloc(TEST_LEN);
  		if (bufs[i] == NULL) {
  			printf("malloc failed test aborted\n");
  			return 1;
  		}
  		rand_buffer(bufs[i], TEST_LEN);
  
  		// Init ctx contexts
  		hash_ctx_init(&ctxpool[i]);
  		ctxpool[i].user_data = (void *)((uint64_t) i);
  
  		// Run reference test
  		md5_ref(bufs[i], digest_ref[i], TEST_LEN);
  
  		// Run sb_md5 test
  		md5_ctx_mgr_submit(mgr, &ctxpool[i], bufs[i], TEST_LEN, HASH_ENTIRE);
  	}
  
  	while (md5_ctx_mgr_flush(mgr)) ;
  
  	for (i = 0; i < TEST_BUFS; i++) {
  		for (j = 0; j < MD5_DIGEST_NWORDS; j++) {
  			if (ctxpool[i].job.result_digest[j] != digest_ref[i][j]) {
  				fail++;
  				printf("Test%d fixed size, digest%d "
  				       "fail 0x%08X <=> 0x%08X \n",
  				       i, j, ctxpool[i].job.result_digest[j],
  				       digest_ref[i][j]);
  			}
  		}
  	}
  
  	if (fail) {
  		printf("Test failed function check %d\n", fail);
  		return fail;
  	}
  	// Run tests with random size and number of jobs
  	for (t = 0; t < RANDOMS; t++) {
  		jobs = rand() % (TEST_BUFS);
  
  		md5_ctx_mgr_init(mgr);
  
  		for (i = 0; i < jobs; i++) {
  			// Use buffer with random len and contents
  			lens[i] = rand() % (TEST_LEN);
  			rand_buffer(bufs[i], lens[i]);
  
  			// Run reference test
  			md5_ref(bufs[i], digest_ref[i], lens[i]);
  
  			// Run md5_mb test
  			md5_ctx_mgr_submit(mgr, &ctxpool[i], bufs[i], lens[i], HASH_ENTIRE);
  		}
  
  		while (md5_ctx_mgr_flush(mgr)) ;
  
  		for (i = 0; i < jobs; i++) {
  			for (j = 0; j < MD5_DIGEST_NWORDS; j++) {
  				if (ctxpool[i].job.result_digest[j] != digest_ref[i][j]) {
  					fail++;
  					printf("Test%d, digest%d fail "
  					       "0x%08X <=> 0x%08X\n",
  					       i, j, ctxpool[i].job.result_digest[j],
  					       digest_ref[i][j]);
  				}
  			}
  		}
  		if (fail) {
  			printf("Test failed function check %d\n", fail);
  			return fail;
  		}
  
  		putchar('.');
  		fflush(0);
  	}			// random test t
  
  	// Test at the end of buffer
  	jobs = rand() % TEST_BUFS;
  	tmp_buf = (uint8_t *) malloc(sizeof(uint8_t) * jobs);
  	if (!tmp_buf) {
  		printf("malloc failed, end test aborted.\n");
  		return 1;
  	}
  
  	rand_buffer(tmp_buf, jobs);
  
  	md5_ctx_mgr_init(mgr);
  
  	// Extend to the end of allocated buffer to construct jobs
  	for (i = 0; i < jobs; i++) {
  		bufs[i] = (uint8_t *) & tmp_buf[i];
  		lens[i] = jobs - i;
  
  		// Reference test
  		md5_ref(bufs[i], digest_ref[i], lens[i]);
  
  		// sb_md5 test
  		md5_ctx_mgr_submit(mgr, &ctxpool[i], bufs[i], lens[i], HASH_ENTIRE);
  	}
  
  	while (md5_ctx_mgr_flush(mgr)) ;
  
  	for (i = 0; i < jobs; i++) {
  		for (j = 0; j < MD5_DIGEST_NWORDS; j++) {
  			if (ctxpool[i].job.result_digest[j] != digest_ref[i][j]) {
  				fail++;
  				printf("End test failed at offset %d - result: 0x%08X"
  				       ", ref: 0x%08X\n", i, ctxpool[i].job.result_digest[j],
  				       digest_ref[i][j]);
  			}
  		}
  	}
  
  	putchar('.');
  
  	if (fail)
  		printf("Test failed function check %d\n", fail);
  	else
  		printf(" multibinary_md5 rand: Pass\n");
  
  	return fail;
  }
  