--- sync.c	2010-04-24 03:33:47.000000000 -0700
+++ sync.c	2018-12-29 08:24:19.079644000 -0800
@@ -439,7 +439,7 @@ 
 	u_int16_t sglen, fromlen, tolen, helolen, padlen;
 	char pad[SPAM_ALIGNBYTES];
 	int i = 0;
-	HMAC_CTX ctx;
+	HMAC_CTX* ctx;
 	u_int hmac_len;
 
 	if (debug)
@@ -455,8 +455,9 @@ 
 	tolen = strlen(to) + 1;
 	helolen = strlen(helo) + 1;
 
-	HMAC_CTX_init(&ctx);
-	HMAC_Init(&ctx, sync_key, strlen(sync_key), EVP_sha1());
+	ctx = HMAC_CTX_new();
+	HMAC_CTX_reset(ctx);
+	HMAC_Init_ex(ctx, sync_key, strlen(sync_key), EVP_sha1(), NULL);
 
 	sglen = sizeof(sg) + fromlen + tolen + helolen;
 	padlen = SPAM_ALIGN(sglen) - sglen;
@@ -468,7 +469,7 @@ 
 	hdr.sh_length = htons(sizeof(hdr) + sglen + padlen + sizeof(end));
 	iov[i].iov_base = &hdr;
 	iov[i].iov_len = sizeof(hdr);
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	/* Add single SPAM sync greylisting entry */
@@ -481,27 +482,27 @@ 
 	sg.sg_helo_length = htons(helolen);
 	iov[i].iov_base = &sg;
 	iov[i].iov_len = sizeof(sg);
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	iov[i].iov_base = from;
 	iov[i].iov_len = fromlen;
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	iov[i].iov_base = to;
 	iov[i].iov_len = tolen;
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	iov[i].iov_base = helo;
 	iov[i].iov_len = helolen;
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	iov[i].iov_base = pad;
 	iov[i].iov_len = padlen;
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	/* Add end marker */
@@ -509,14 +510,14 @@ 
 	end.st_length = htons(sizeof(end));
 	iov[i].iov_base = &end;
 	iov[i].iov_len = sizeof(end);
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
-	HMAC_Final(&ctx, hdr.sh_hmac, &hmac_len);
+	HMAC_Final(ctx, hdr.sh_hmac, &hmac_len);
 
 	/* Send message to the target hosts */
 	sync_send(iov, i);
-	HMAC_CTX_cleanup(&ctx);
+	HMAC_CTX_free(ctx);
 }
 
 void
@@ -527,7 +528,7 @@ 
 	struct spam_synctlv_addr sd;
 	struct spam_synctlv_hdr end;
 	int i = 0;
-	HMAC_CTX ctx;
+	HMAC_CTX* ctx;
 	u_int hmac_len;
 
 	if (debug)
@@ -537,8 +538,9 @@ 
 	bzero(&hdr, sizeof(hdr));
 	bzero(&sd, sizeof(sd));
 
-	HMAC_CTX_init(&ctx);
-	HMAC_Init(&ctx, sync_key, strlen(sync_key), EVP_sha1());
+	ctx = HMAC_CTX_new();
+	HMAC_CTX_reset(ctx);
+	HMAC_Init_ex(ctx, sync_key, strlen(sync_key), EVP_sha1(), NULL);
 
 	/* Add SPAM sync packet header */
 	hdr.sh_version = SPAM_SYNC_VERSION;
@@ -547,7 +549,7 @@ 
 	hdr.sh_length = htons(sizeof(hdr) + sizeof(sd) + sizeof(end));
 	iov[i].iov_base = &hdr;
 	iov[i].iov_len = sizeof(hdr);
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	/* Add single SPAM sync address entry */
@@ -558,7 +560,7 @@ 
 	sd.sd_ip = inet_addr(ip);
 	iov[i].iov_base = &sd;
 	iov[i].iov_len = sizeof(sd);
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
 	/* Add end marker */
@@ -566,14 +568,14 @@ 
 	end.st_length = htons(sizeof(end));
 	iov[i].iov_base = &end;
 	iov[i].iov_len = sizeof(end);
-	HMAC_Update(&ctx, iov[i].iov_base, iov[i].iov_len);
+	HMAC_Update(ctx, iov[i].iov_base, iov[i].iov_len);
 	i++;
 
-	HMAC_Final(&ctx, hdr.sh_hmac, &hmac_len);
+	HMAC_Final(ctx, hdr.sh_hmac, &hmac_len);
 
 	/* Send message to the target hosts */
 	sync_send(iov, i);
-	HMAC_CTX_cleanup(&ctx);
+	HMAC_CTX_free(ctx);
 }
 
 void