diff -Naur sqlcipher-3.4.2/src/crypto_openssl.c sqlcipher-3.4.2_patched/src/crypto_openssl.c
--- sqlcipher-3.4.2/src/crypto_openssl.c	2017-12-21 22:31:28.000000000 +0300
+++ sqlcipher-3.4.2_patched/src/crypto_openssl.c	2018-03-19 15:31:31.675017876 +0300
@@ -47,29 +47,6 @@
 static unsigned int openssl_init_count = 0;
 static sqlite3_mutex* openssl_rand_mutex = NULL;
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
-static HMAC_CTX *HMAC_CTX_new(void)
-{
-  HMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
-  if (ctx != NULL) {
-    HMAC_CTX_init(ctx);
-  }
-  return ctx;
-}
-
-// Per 1.1.0 (https://wiki.openssl.org/index.php/1.1_API_Changes)
-// HMAC_CTX_free should call HMAC_CTX_cleanup, then EVP_MD_CTX_Cleanup.
-// HMAC_CTX_cleanup internally calls EVP_MD_CTX_cleanup so these
-// calls are not needed.
-static void HMAC_CTX_free(HMAC_CTX *ctx)
-{
-  if (ctx != NULL) {
-    HMAC_CTX_cleanup(ctx);
-    OPENSSL_free(ctx);
-  }
-}
-#endif
-
 static int sqlcipher_openssl_add_random(void *ctx, void *buffer, int length) {
 #ifndef SQLCIPHER_OPENSSL_NO_MUTEX_RAND
   CODEC_TRACE_MUTEX("sqlcipher_openssl_add_random: entering openssl_rand_mutex %p\n", openssl_rand_mutex);