From 7103b6adf3c52649970d66d3d424bbea2aa40368 Mon Sep 17 00:00:00 2001
From: jiegec <noc@jiegec.ac.cn>
Date: Mon, 8 Mar 2021 19:09:51 +0800
Subject: Add sm3 cryptographic hash support

---
 openssl-sys/src/evp.rs |  2 ++
 openssl/src/hash.rs    | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/openssl-sys/src/evp.rs b/openssl-sys/src/evp.rs
index ec5df30a..3808c6bf 100644
--- a/openssl-sys/src/evp.rs
+++ b/openssl-sys/src/evp.rs
@@ -243,6 +243,8 @@ extern "C" {
     #[cfg(ossl111)]
     pub fn EVP_shake256() -> *const EVP_MD;
     pub fn EVP_ripemd160() -> *const EVP_MD;
+    #[cfg(all(ossl111, not(osslconf = "OPENSSL_NO_SM3")))]
+    pub fn EVP_sm3() -> *const EVP_MD;
     pub fn EVP_des_ecb() -> *const EVP_CIPHER;
     pub fn EVP_des_ede3() -> *const EVP_CIPHER;
     pub fn EVP_des_ede3_cbc() -> *const EVP_CIPHER;
diff --git a/openssl/src/hash.rs b/openssl/src/hash.rs
index 317d20e2..30ba8fcf 100644
--- a/openssl/src/hash.rs
+++ b/openssl/src/hash.rs
@@ -128,6 +128,11 @@ impl MessageDigest {
         unsafe { MessageDigest(ffi::EVP_ripemd160()) }
     }
 
+    #[cfg(all(ossl111, not(osslconf = "OPENSSL_NO_SM3")))]
+    pub fn sm3() -> MessageDigest {
+        unsafe { MessageDigest(ffi::EVP_sm3()) }
+    }
+
     #[allow(clippy::trivially_copy_pass_by_ref)]
     pub fn as_ptr(&self) -> *const ffi::EVP_MD {
         self.0
@@ -626,6 +631,18 @@ mod tests {
         }
     }
 
+    #[test]
+    fn test_sm3() {
+        let tests = [(
+            "616263",
+            "66c7f0f462eeedd9d1f2d46bdc10e4e24167c4875cf2f7a2297da02b8f4ba8e0",
+        )];
+
+        for test in tests.iter() {
+            hash_test(MessageDigest::sm3(), test);
+        }
+    }
+
     #[test]
     fn from_nid() {
         assert_eq!(
-- 
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