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, 73 insertions, 0 deletions

diff --git a/src/lib/libcrypto/evp/m_sm3.c b/src/lib/libcrypto/evp/m_sm3.c
new file mode 100644
index 0000000000..66582b8e4a
--- /dev/null
+++ b/src/lib/libcrypto/evp/m_sm3.c
@@ -0,0 +1,73 @@
+/*      $OpenBSD: m_sm3.c,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.
+ */
+
+#include <openssl/opensslconf.h>
+
+#ifndef OPENSSL_NO_SM3
+#include <openssl/evp.h>
+#include <openssl/sm3.h>
+
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.h>
+#endif
+
+static int
+sm3_init(EVP_MD_CTX *ctx)
+{
+        return SM3_Init(ctx->md_data);
+}
+
+static int
+sm3_update(EVP_MD_CTX *ctx, const void *data, size_t count)
+{
+        return SM3_Update(ctx->md_data, data, count);
+}
+
+static int
+sm3_final(EVP_MD_CTX *ctx, unsigned char *md)
+{
+        return SM3_Final(md, ctx->md_data);
+}
+
+static const EVP_MD sm3_md = {
+        .type = NID_sm3,
+        .pkey_type = NID_sm3WithRSAEncryption,
+        .md_size = SM3_DIGEST_LENGTH,
+        .flags = EVP_MD_FLAG_PKEY_METHOD_SIGNATURE|EVP_MD_FLAG_DIGALGID_ABSENT,
+        .init = sm3_init,
+        .update = sm3_update,
+        .final = sm3_final,
+        .copy = NULL,
+        .cleanup = NULL,
+#ifndef OPENSSL_NO_RSA
+        .sign = (evp_sign_method *)RSA_sign,
+        .verify = (evp_verify_method *)RSA_verify,
+        .required_pkey_type = {
+                EVP_PKEY_RSA, EVP_PKEY_RSA2, 0, 0,
+        },
+#endif
+        .block_size = SM3_CBLOCK,
+        .ctx_size = sizeof(EVP_MD *) + sizeof(SM3_CTX),
+};
+
+const EVP_MD *
+EVP_sm3(void)
+{
+        return &sm3_md;
+}
+
+#endif /* OPENSSL_NO_SM3 */