Update XMSS-SM3

XMSS is in developing, not fully tested

tools/xmsssign.c

@@ -0,0 +1,164 @@
+/*
+ *  Copyright 2014-2023 The GmSSL Project. 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.
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <gmssl/mem.h>
+#include <gmssl/file.h>
+#include <gmssl/error.h>
+#include <gmssl/xmss.h>
+
+static const char *usage = "-key file [-in file] [-out file]\n";
+
+static const char *help =
+"Options\n"
+"    -key file                   Input private key file\n"
+"    -in file                    Input data file (if not using stdin)\n"
+"    -out file                   Output signature file\n"
+"\n";
+
+int xmsssign_main(int argc, char **argv)
+{
+	int ret = 1;
+	char *prog = argv[0];
+	char *keyfile = NULL;
+	char *infile = NULL;
+	char *outfile = NULL;
+	FILE *keyfp = NULL;
+	FILE *infp = stdin;
+	FILE *outfp = stdout;
+	uint8_t *keybuf = NULL;
+	size_t keylen;
+	XMSS_KEY key;
+	XMSS_SIGN_CTX sign_ctx;
+	uint8_t *sigbuf = NULL;
+	size_t siglen;
+
+	argc--;
+	argv++;
+
+	if (argc < 1) {
+		fprintf(stderr, "usage: %s %s\n", prog, usage);
+		return 1;
+	}
+
+	while (argc > 0) {
+		if (!strcmp(*argv, "-help")) {
+			printf("usage: %s %s\n", prog, usage);
+			printf("%s\n", help);
+			ret = 0;
+			goto end;
+		} else if (!strcmp(*argv, "-key")) {
+			if (--argc < 1) goto bad;
+			keyfile = *(++argv);
+			/*
+			if (!(keyfp = fopen(keyfile, "rb"))) {
+				fprintf(stderr, "%s: open '%s' failure: %s\n", prog, keyfile, strerror(errno));
+				goto end;
+			}
+			*/
+			if (file_read_all(keyfile, &keybuf, &keylen) != 1) {
+				error_print();
+				goto end;
+			}
+		} else if (!strcmp(*argv, "-in")) {
+			if (--argc < 1) goto bad;
+			infile = *(++argv);
+			if (!(infp = fopen(infile, "rb"))) {
+				fprintf(stderr, "%s: open '%s' failure: %s\n", prog, infile, strerror(errno));
+				goto end;
+			}
+		} else if (!strcmp(*argv, "-out")) {
+			if (--argc < 1) goto bad;
+			outfile = *(++argv);
+			if (!(outfp = fopen(outfile, "wb"))) {
+				fprintf(stderr, "%s: open '%s' failure: %s\n", prog, outfile, strerror(errno));
+				goto end;
+			}
+		} else {
+			fprintf(stderr, "%s: illegal option '%s'\n", prog, *argv);
+			goto end;
+bad:
+			fprintf(stderr, "%s: `%s` option value missing\n", prog, *argv);
+			goto end;
+		}
+
+		argc--;
+		argv++;
+	}
+
+	if (!keyfile) {
+		fprintf(stderr, "%s: `-key` option required\n", prog);
+		goto end;
+	}
+
+
+	if (xmss_key_from_bytes(&key, keybuf, keylen) != 1) {
+		error_print();
+		goto end;
+	}
+
+	if (xmss_sign_init(&sign_ctx, &key) != 1) {
+		error_print();
+		goto end;
+	}
+
+	while (1) {
+		uint8_t buf[1024];
+		size_t len = fread(buf, 1, sizeof(buf), infp);
+		if (len == 0) {
+			break;
+		}
+		if (xmss_sign_update(&sign_ctx, buf, len) != 1) {
+			error_print();
+			goto end;
+		}
+	}
+
+	if (xmss_sign_finish(&sign_ctx, &key, NULL, &siglen) != 1) {
+		error_print();
+		goto end;
+	}
+
+	if (!(sigbuf = malloc(siglen))) {
+		fprintf(stderr, "%s: malloc failure\n", prog);
+		goto end;
+	}
+
+	if (xmss_sign_finish(&sign_ctx, &key, sigbuf, &siglen) != 1) {
+		error_print();
+		goto end;
+	}
+
+	if (fwrite(sigbuf, 1, siglen, outfp) != siglen) {
+		error_print();
+		goto end;
+	}
+
+	ret = 0;
+
+end:
+	gmssl_secure_clear(&key, sizeof(key));
+	gmssl_secure_clear(&sign_ctx, sizeof(sign_ctx));
+	if (sigbuf) {
+		gmssl_secure_clear(sigbuf, siglen);
+		free(sigbuf);
+	}
+	if (keybuf) {
+		gmssl_secure_clear(keybuf, keylen);
+		free(keybuf);
+	}
+	//if (keyfp) fclose(keyfp);
+	if (infp && infp != stdin) fclose(infp);
+	if (outfp && outfp != stdout) fclose(outfp);
+	return ret;
+}