Update XMSS-SM3

XMSS is in developing, not fully tested

tools/xmsskeygen.c

@@ -0,0 +1,159 @@
+/*
+ *  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/error.h>
+#include <gmssl/xmss.h>
+
+
+static const char *usage = "-oid oid [-out file] [-pubout file]\n";
+
+static const char *help =
+"Options\n"
+"    -oid oid                    XMSS algorithm OID\n"
+"                                 XMSS_SM3_10\n"
+"                                 XMSS_SM3_16\n"
+"                                 XMSS_SM3_20\n"
+"    -out file                   Output private key\n"
+"    -pubout file                Output public key\n"
+"\n";
+
+int xmsskeygen_main(int argc, char **argv)
+{
+	int ret = 1;
+	char *prog = argv[0];
+	char *oid = NULL;
+	uint32_t oid_val = 0;
+	char *outfile = NULL;
+	char *puboutfile = NULL;
+	FILE *outfp = stdout;
+	FILE *puboutfp = stdout;
+	XMSS_KEY key;
+	uint8_t *out = NULL;
+	uint8_t *pubout = NULL;
+	size_t outlen, puboutlen;
+
+	argc--;
+	argv++;
+
+	if (argc < 1) {
+		fprintf(stderr, "usage: %s %s\n", prog, help);
+		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, "-oid")) {
+			if (--argc < 1) goto bad;
+			oid = *(++argv);
+			if (strcmp(oid, "XMSS_SM3_10") == 0) {
+				oid_val = XMSS_SM3_10;
+			} else if (strcmp(oid, "XMSS_SM3_16") == 0) {
+				oid_val = XMSS_SM3_16;
+			} else if (strcmp(oid, "XMSS_SM3_20") == 0) {
+				oid_val = XMSS_SM3_20;
+			} else {
+				fprintf(stderr, "%s: invalid XMSS algor ID `%s`\n", prog, oid);
+				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 if (!strcmp(*argv, "-pubout")) {
+			if (--argc < 1) goto bad;
+			puboutfile = *(++argv);
+			if (!(puboutfp = fopen(puboutfile, "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 (!oid) {
+		fprintf(stderr, "%s: `-oid` option required\n", prog);
+		goto end;
+	}
+
+
+	if (xmss_key_generate(&key, oid_val) != 1) {
+		error_print();
+		return -1;
+	}
+
+	if (xmss_key_to_bytes(&key, NULL, &outlen) != 1) {
+		error_print();
+		goto end;
+	}
+	if (!(out = malloc(outlen))) {
+		error_print();
+		goto end;
+	}
+	if (xmss_key_to_bytes(&key, out, &outlen) != 1) {
+		error_print();
+	}
+
+	if (xmss_public_key_to_bytes(&key, NULL, &puboutlen) != 1) {
+		error_print();
+		goto end;
+	}
+	if (!(pubout = malloc(puboutlen))) {
+		error_print();
+		goto end;
+	}
+	if (xmss_public_key_to_bytes(&key, pubout, &puboutlen) != 1) {
+		error_print();
+		goto end;
+	}
+
+	if (fwrite(out, 1, outlen, outfp) != outlen) {
+		error_print();
+		goto end;
+	}
+	if (fwrite(pubout, 1, puboutlen, puboutfp) != puboutlen) {
+		error_print();
+		goto end;
+	}
+
+	ret = 0;
+end:
+	gmssl_secure_clear(&key, sizeof(key));
+	if (out) {
+		gmssl_secure_clear(out, outlen);
+		free(out);
+	}
+	if (pubout) {
+		gmssl_secure_clear(pubout, puboutlen);
+		free(pubout);
+	}
+	if (outfile && outfp) fclose(outfp);
+	if (puboutfile && puboutfp) fclose(puboutfp);
+	return ret;
+}