From: David Aguilar <>

As of Mac OS X 10.7, Apple deprecated all OpenSSL functions due to
OpenSSL ABI instability.  Silence the warnings by using Apple's
CommonCrypto HMAC replacement functions.

[es: reworded commit message; check APPLE_COMMON_CRYPTO instead of

Signed-off-by: David Aguilar <>
Signed-off-by: Eric Sunshine <>
Junio Hamano writes:
> Doesn't this mean people on platforms that do not care what Apple
> does have to define NO_APPLE_COMMON_CRYPTO?

It certainly does break other platforms. Thanks for catching.

> How about stopping this double-negation and do it more like this?

Double-negation begone.

 imap-send.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/imap-send.c b/imap-send.c
index d9bcfb4..8ea180f 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -29,8 +29,18 @@
 #ifdef NO_OPENSSL
 typedef void *SSL;
+#include <CommonCrypto/CommonHMAC.h>
+#define HMAC_CTX CCHmacContext
+#define HMAC_Init(hmac, key, len, algo) CCHmacInit(hmac, algo, key, len)
+#define HMAC_Update CCHmacUpdate
+#define HMAC_Final(hmac, hash, ptr) CCHmacFinal(hmac, hash)
+#define HMAC_CTX_cleanup
+#define EVP_md5() kCCHmacAlgMD5
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
 #include <openssl/x509v3.h>

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