sqlcipher-src 419.0.6+sqlcipher-4.19.0-sqlite-3.53.4-libtomcrypt-1.18.2

The SQLCipher amalgamation for native and wasm32 builds, with a libtomcrypt provider for targets without a system crypto library
Documentation 
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt.h"

/**
  @file crypt_hash_is_valid.c
  Determine if hash is valid, Tom St Denis
*/

/*
   Test if a hash index is valid
   @param idx   The index of the hash to search for
   @return CRYPT_OK if valid
*/
int hash_is_valid(int idx)
{
   LTC_MUTEX_LOCK(&ltc_hash_mutex);
   if (idx < 0 || idx >= TAB_SIZE || hash_descriptor[idx].name == NULL) {
      LTC_MUTEX_UNLOCK(&ltc_hash_mutex);
      return CRYPT_INVALID_HASH;
   }
   LTC_MUTEX_UNLOCK(&ltc_hash_mutex);
   return CRYPT_OK;
}

/* ref:         HEAD -> master, tag: v1.18.2 */
/* git commit:  7e7eb695d581782f04b24dc444cbfde86af59853 */
/* commit time: 2018-07-01 22:49:01 +0200 */