Add a getter to obtain the HMAC_CTX md

As a result of opaque HMAC_CTX apps need a getter for the HMAC_CTX md.

GitHub Issue #1152

Reviewed-by: Tim Hudson <tjh@openssl.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/crypto/hmac/hmac.c b/crypto/hmac/hmac.c
index da7f58688f..3374105cbb 100644
--- a/crypto/hmac/hmac.c
+++ b/crypto/hmac/hmac.c
@@ -233,3 +233,8 @@ void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
     EVP_MD_CTX_set_flags(ctx->o_ctx, flags);
     EVP_MD_CTX_set_flags(ctx->md_ctx, flags);
 }
+
+const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx)
+{
+    return ctx->md;
+}