Add Ribose Inc's implementation of the SM3 hashing function with

tweaks from jsing and myself.  The SM2/SM3/SM4 algorithms are mandatory
for legal use of cryptography within China and [are] widely applied in
the country, covering identification/financial cards, contactless,
TPM 2.0 and PKI.

ok beck inoguchi jsing

1 files changed, 53 insertions, 0 deletions

diff --git a/src/lib/libcrypto/sm3/sm3.h b/src/lib/libcrypto/sm3/sm3.h
new file mode 100644
index 0000000000..553c64dcdb
--- /dev/null
+++ b/src/lib/libcrypto/sm3/sm3.h
@@ -0,0 +1,53 @@
+/*      $OpenBSD: sm3.h,v 1.1 2018/11/11 06:53:31 tb Exp $      */
+/*
+ * Copyright (c) 2018, Ribose Inc
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef HEADER_SM3_H
+#define HEADER_SM3_H
+
+#include <stddef.h>
+#include <openssl/opensslconf.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#ifdef OPENSSL_NO_SM3
+#error SM3 is disabled.
+#endif
+
+#define SM3_DIGEST_LENGTH 32
+#define SM3_WORD unsigned int
+
+#define SM3_CBLOCK 64
+#define SM3_LBLOCK (SM3_CBLOCK / 4)
+
+typedef struct SM3state_st {
+        SM3_WORD A, B, C, D, E, F, G, H;
+        SM3_WORD Nl, Nh;
+        SM3_WORD data[SM3_LBLOCK];
+        unsigned int num;
+} SM3_CTX;
+
+int SM3_Init(SM3_CTX *c);
+int SM3_Update(SM3_CTX *c, const void *data, size_t len);
+int SM3_Final(unsigned char *md, SM3_CTX *c);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* HEADER_SM3_H */