update

tools/sm3hmac.c

@@ -0,0 +1,95 @@
+/* 
+ *   Copyright 2014-2021 The GmSSL Project Authors. All Rights Reserved.
+ *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
+ *   limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gmssl/sm3.h>
+#include <gmssl/hex.h>
+#include <gmssl/error.h>
+
+
+int main(int argc, char **argv)
+{
+	int ret = -1;
+	char *prog = argv[0];
+	char *keyhex = NULL;
+	char *infile = NULL;
+	uint8_t key[32];
+	size_t keylen;
+	FILE *in = stdin;
+	SM3_HMAC_CTX ctx;
+	unsigned char dgst[32];
+	unsigned char buf[4096];
+	size_t len;
+
+	argc--;
+	argv++;
+
+	while (argc > 0) {
+		if (!strcmp(*argv, "-help")) {
+help:
+			fprintf(stderr, "usage: %s -keyhex hex [-in file]\n", prog);
+			return -1;
+
+		} else if (!strcmp(*argv, "-keyhex")) {
+			if (--argc < 1) goto bad;
+			keyhex = *(++argv);
+
+		} else if (!strcmp(*argv, "-in")) {
+			if (--argc < 1) goto bad;
+			infile = *(++argv);
+
+		} else {
+			fprintf(stderr, "%s: illegal option '%s'\n", prog, *argv);
+			goto help;
+		}
+
+		argc--;
+		argv++;
+	}
+
+	if (!keyhex) {
+		fprintf(stderr, "%s: option '-keyhex' required\n", prog);
+		goto help;
+	}
+	if (strlen(keyhex) > sizeof(key) * 2) {
+		error_print();
+		return -1;
+	}
+	if (hex_to_bytes(keyhex, strlen(keyhex), key, &keylen) != 1) {
+		error_print();
+		return -1;
+	}
+
+	sm3_hmac_init(&ctx, key, keylen);
+
+	while ((len = fread(buf, 1, sizeof(buf), stdin)) > 0) {
+		sm3_hmac_update(&ctx, buf, len);
+	}
+	sm3_hmac_finish(&ctx, dgst);
+
+
+	format_bytes(stdout, 0, 0, "", dgst, sizeof(dgst));
+
+	memset(&ctx, 0, sizeof(ctx));
+	memset(key, 0, sizeof(key));
+	return 0;
+
+bad:
+	fprintf(stderr, "%s: '%s' option value required\n", prog, *argv);
+	return -1;
+}