- Import new upstream release 4.1.8.

5 files changed, 560 insertions, 0 deletions

diff --git a/src/libstrongswan/fips/fips.c b/src/libstrongswan/fips/fips.c
new file mode 100644
index 000000000..aba292d81
--- /dev/null
+++ b/src/libstrongswan/fips/fips.c
@@ -0,0 +1,103 @@
+/**
+ * @file fips.c
+ * 
+ * @brief Implementation of the libstrongswan integrity test.
+ * 
+ */
+
+/*
+ * Copyright (C) 2007 Bruno Krieg, Daniel Wydler
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <stdio.h>
+
+#include <debug.h>
+#include <crypto/signers/hmac_signer.h>
+#include "fips.h"
+
+extern const u_char FIPS_rodata_start[];
+extern const u_char FIPS_rodata_end[];
+extern const void *FIPS_text_start();
+extern const void *FIPS_text_end();
+
+/**
+ * Described in header
+ */
+bool fips_compute_hmac_signature(const char *key, char *signature)
+{
+	u_char *text_start = (u_char *)FIPS_text_start();
+	u_char *text_end   = (u_char *)FIPS_text_end();
+	size_t text_len, rodata_len;
+	signer_t *signer;
+
+	if (text_start > text_end)
+	{
+		DBG1("  TEXT start (%p) > TEXT end (%p",
+				text_start, text_end);
+		return FALSE;
+	}
+	text_len = text_end - text_start;
+    DBG1("  TEXT:   %p + %6d = %p",
+			text_start, (int)text_len, text_end);
+
+	if (FIPS_rodata_start > FIPS_rodata_end)
+	{
+		DBG1("  RODATA start (%p) > RODATA end (%p",
+				FIPS_rodata_start, FIPS_rodata_end);
+		return FALSE;
+	}
+	rodata_len = FIPS_rodata_end - FIPS_rodata_start;
+    DBG1("  RODATA: %p + %6d = %p",
+			FIPS_rodata_start, (int)rodata_len, FIPS_rodata_end);
+
+    signer = (signer_t *)hmac_signer_create(HASH_SHA1, HASH_SIZE_SHA1);
+	if (signer == NULL)
+	{
+	    DBG1("  SHA-1 HMAC signer could not be created");
+		return FALSE;
+	}
+	else
+	{
+		chunk_t hmac_key = { key, strlen(key) };
+		chunk_t text_chunk = { text_start, text_len };
+		chunk_t rodata_chunk = { (u_char *)FIPS_rodata_start, rodata_len };
+		chunk_t signature_chunk = chunk_empty;
+
+		signer->set_key(signer, hmac_key);
+		signer->allocate_signature(signer, text_chunk, NULL);
+		signer->allocate_signature(signer, rodata_chunk, &signature_chunk);
+		signer->destroy(signer);
+
+		sprintf(signature, "%#B", &signature_chunk);
+		DBG1("  SHA-1 HMAC key: %s", key);
+		DBG1("  SHA-1 HMAC sig: %s", signature);
+		free(signature_chunk.ptr);
+		return TRUE;
+	}
+}
+
+/**
+ * Described in header
+ */
+bool fips_verify_hmac_signature(const char *key,
+								const char *signature)
+{
+	char current_signature[BUF_LEN];
+
+	if (!fips_compute_hmac_signature(key, current_signature))
+	{
+		return FALSE;
+	}
+	return streq(signature, current_signature);
+}
diff --git a/src/libstrongswan/fips/fips.h b/src/libstrongswan/fips/fips.h
new file mode 100644
index 000000000..decf73bfd
--- /dev/null
+++ b/src/libstrongswan/fips/fips.h
@@ -0,0 +1,47 @@
+/**
+ * @file fips.h
+ * 
+ * @brief Interface of the libstrongswan integrity test
+ *
+ * @ingroup fips
+ */
+
+/*
+ * Copyright (C) 2007 Bruno Krieg, Daniel Wydler
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef FIPS_H_
+#define FIPS_H_
+
+#include <library.h>
+
+/**
+ * @brief compute HMAC signature over RODATA and TEXT sections of libstrongswan
+ *
+ * @param  key		key used for HMAC signature in ASCII string format
+ * @param  signature	HMAC signature in HEX string format
+ * @return 		TRUE if HMAC signature computation was successful
+ */
+bool fips_compute_hmac_signature(const char *key, char *signature);
+
+/**
+ * @brief verify HMAC signature over RODATA and TEXT sections of libstrongswan
+ *
+ * @param  key		key used for HMAC signature in ASCII string format
+ * @param  signature	signature value from fips_signature.h in HEX string format
+ * @return		TRUE if signatures agree
+ */
+bool fips_verify_hmac_signature(const char *key, const char *signature);
+
+#endif /*FIPS_H_*/
diff --git a/src/libstrongswan/fips/fips_canister_end.c b/src/libstrongswan/fips/fips_canister_end.c
new file mode 100644
index 000000000..46d41a664
--- /dev/null
+++ b/src/libstrongswan/fips/fips_canister_end.c
@@ -0,0 +1,173 @@
+/**
+ * @file fips_canister_end.c
+ * 
+ * @brief Marks the end of TEXT and RODATA.
+ * 
+ */
+
+/* ====================================================================
+ * Copyright (c) 2005 The OpenSSL Project. Rights for redistribution
+ * and usage in source and binary forms are granted according to the
+ * OpenSSL license.
+ */
+
+#include <stdio.h>
+#if defined(__DECC)
+# include <c_asm.h>
+# pragma __nostandard
+#endif
+
+#if !defined(POINTER_TO_FUNCTION_IS_POINTER_TO_1ST_INSTRUCTION)
+# if	(defined(__sun) && (defined(__sparc) || defined(__sparcv9)))	|| \
+	(defined(__sgi) && (defined(__mips) || defined(mips)))		|| \
+	(defined(__osf__) && defined(__alpha))				|| \
+	(defined(__linux) && (defined(__arm) || defined(__arm__)))	|| \
+	(defined(__i386) || defined(__i386__))				|| \
+	(defined(__x86_64) || defined(__x86_64__))			|| \
+	(defined(vax) || defined(__vax__))
+#  define POINTER_TO_FUNCTION_IS_POINTER_TO_1ST_INSTRUCTION
+# endif
+#endif
+
+#define FIPS_ref_point FIPS_text_end
+/* Some compilers put string literals into a separate segment. As we
+ * are mostly interested to hash AES tables in .rodata, we declare
+ * reference points accordingly. In case you wonder, the values are
+ * big-endian encoded variable names, just to prevent these arrays
+ * from being merged by linker. */
+const unsigned int FIPS_rodata_end[]=
+	{ 0x46495053, 0x5f726f64, 0x6174615f, 0x656e645b };
+
+
+/*
+ * I declare reference function as static in order to avoid certain
+ * pitfalls in -dynamic linker behaviour...
+ */
+static void *instruction_pointer(void)
+{
+  void *ret = NULL;
+
+/* These are ABI-neutral CPU-specific snippets. ABI-neutrality means
+ * that they are designed to work under any OS running on particular
+ * CPU, which is why you don't find any #ifdef THIS_OR_THAT_OS in
+ * this function. */
+#if	defined(INSTRUCTION_POINTER_IMPLEMENTED)
+    INSTRUCTION_POINTER_IMPLEMENTED(ret);
+#elif	defined(__GNUC__) && __GNUC__>=2
+# if	defined(__alpha) || defined(__alpha__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"br	%0,1f\n1:" : "=r"(ret) );
+# elif	defined(__i386) || defined(__i386__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"call 1f\n1:	popl %0" : "=r"(ret) );
+    ret = (void *)((size_t)ret&~3UL); /* align for better performance */
+# elif	defined(__ia64) || defined(__ia64__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"mov	%0=ip" : "=r"(ret) );
+# elif	defined(__hppa) || defined(__hppa__) || defined(__pa_risc)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"blr	%%r0,%0\n\tnop" : "=r"(ret) );
+    ret = (void *)((size_t)ret&~3UL); /* mask privilege level */
+# elif	defined(__mips) || defined(__mips__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    __asm __volatile (	"move	%1,$31\n\t"	/* save ra */
+			"bal	.+8; nop\n\t"
+			"move	%0,$31\n\t"
+			"move	$31,%1"		/* restore ra */
+			: "=r"(ret),"=r"(scratch) );
+# elif	defined(__ppc__) || defined(__powerpc) || defined(__powerpc__) || \
+	defined(__POWERPC__) || defined(_POWER) || defined(__PPC__) || \
+	defined(__PPC64__) || defined(__powerpc64__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    __asm __volatile (	"mfspr	%1,8\n\t"	/* save lr */
+			"bl	.+4\n\t"
+			"mfspr	%0,8\n\t"	/* mflr ret */
+			"mtspr	8,%1"		/* restore lr */
+			: "=r"(ret),"=r"(scratch) );
+# elif	defined(__sparc) || defined(__sparc__) || defined(__sparcv9)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    __asm __volatile (	"mov	%%o7,%1\n\t"
+			"call	.+8; nop\n\t"
+		  	"mov	%%o7,%0\n\t"
+			"mov	%1,%%o7"
+			: "=r"(ret),"=r"(scratch) );
+# elif	defined(__x86_64) || defined(__x86_64__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"leaq	0(%%rip),%0" : "=r"(ret) );
+    ret = (void *)((size_t)ret&~3UL); /* align for better performance */
+# endif
+#elif	defined(__DECC) && defined(__alpha)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    ret = (void *)(size_t)asm("br %v0,1f\n1:");
+#elif   defined(_MSC_VER) && defined(_M_IX86)
+#   undef INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    _asm {
+            call    self
+    self:   pop     eax
+            mov     scratch,eax
+         }
+    ret = (void *)((size_t)scratch&~3UL);
+#endif
+  return ret;
+}
+
+/*
+ * This function returns pointer to an instruction in the vicinity of
+ * its entry point, but not outside this object module. This guarantees
+ * that sequestered code is covered...
+ */
+void *FIPS_ref_point()
+{
+#if	defined(INSTRUCTION_POINTER_IMPLEMENTED)
+    return instruction_pointer();
+/* Below we essentially cover vendor compilers which do not support
+ * inline assembler... */
+#elif	defined(_AIX)
+    struct { void *ip,*gp,*env; } *p = (void *)instruction_pointer;
+    return p->ip;
+#elif	defined(_HPUX_SOURCE)
+# if	defined(__hppa) || defined(__hppa__)
+    struct { void *i[4]; } *p = (void *)FIPS_ref_point;
+
+    if (sizeof(p) == 8)	/* 64-bit */
+	return p->i[2];
+    else if ((size_t)p & 2)
+    {	p = (void *)((size_t)p&~3UL);
+	return p->i[0];
+    }
+    else
+	return (void *)p;
+# elif	defined(__ia64) || defined(__ia64__)
+    struct { unsigned long long ip,gp; } *p=(void *)instruction_pointer;
+    return (void *)(size_t)p->ip;
+# endif
+#elif	(defined(__VMS) || defined(VMS)) && !(defined(vax) || defined(__vax__))
+    /* applies to both alpha and ia64 */
+    struct { unsigned __int64 opaque,ip; } *p=(void *)instruction_pointer;
+    return (void *)(size_t)p->ip;
+#elif	defined(__VOS__)
+    /* applies to both pa-risc and ia32 */
+    struct { void *dp,*ip,*gp; } *p = (void *)instruction_pointer;
+    return p->ip;
+#elif	defined(_WIN32)
+# if	defined(_WIN64) && defined(_M_IA64)
+    struct { void *ip,*gp; } *p = (void *)FIPS_ref_point;
+    return p->ip;
+# else
+    return (void *)FIPS_ref_point;
+# endif
+/*
+ * In case you wonder why there is no #ifdef __linux. All Linux targets
+ * are GCC-based and therefore are covered by instruction_pointer above
+ * [well, some are covered by by the one below]...
+ */ 
+#elif	defined(POINTER_TO_FUNCTION_IS_POINTER_TO_1ST_INSTRUCTION)
+    return (void *)instruction_pointer;
+#else
+    return NULL;
+#endif
+}
diff --git a/src/libstrongswan/fips/fips_canister_start.c b/src/libstrongswan/fips/fips_canister_start.c
new file mode 100644
index 000000000..eaf2571f8
--- /dev/null
+++ b/src/libstrongswan/fips/fips_canister_start.c
@@ -0,0 +1,174 @@
+/**
+ * @file fips_canister_start.c
+ * 
+ * @brief Marks the start of TEXT and RODATA.
+ * 
+ */
+
+/* ====================================================================
+ * Copyright (c) 2005 The OpenSSL Project. Rights for redistribution
+ * and usage in source and binary forms are granted according to the
+ * OpenSSL license.
+ */
+
+#include <stdio.h>
+#if defined(__DECC)
+# include <c_asm.h>
+# pragma __nostandard
+#endif
+
+#if !defined(POINTER_TO_FUNCTION_IS_POINTER_TO_1ST_INSTRUCTION)
+# if	(defined(__sun) && (defined(__sparc) || defined(__sparcv9)))	|| \
+	(defined(__sgi) && (defined(__mips) || defined(mips)))		|| \
+	(defined(__osf__) && defined(__alpha))				|| \
+	(defined(__linux) && (defined(__arm) || defined(__arm__)))	|| \
+	(defined(__i386) || defined(__i386__))				|| \
+	(defined(__x86_64) || defined(__x86_64__))			|| \
+	(defined(vax) || defined(__vax__))
+#  define POINTER_TO_FUNCTION_IS_POINTER_TO_1ST_INSTRUCTION
+# endif
+#endif
+
+
+#define FIPS_ref_point FIPS_text_start
+/* Some compilers put string literals into a separate segment. As we
+ * are mostly interested to hash AES tables in .rodata, we declare
+ * reference points accordingly. In case you wonder, the values are
+ * big-endian encoded variable names, just to prevent these arrays
+ * from being merged by linker. */
+const unsigned int FIPS_rodata_start[]=
+	{ 0x46495053, 0x5f726f64, 0x6174615f, 0x73746172 };
+
+
+/*
+ * I declare reference function as static in order to avoid certain
+ * pitfalls in -dynamic linker behaviour...
+ */
+static void *instruction_pointer(void)
+{
+  void *ret = NULL;
+
+/* These are ABI-neutral CPU-specific snippets. ABI-neutrality means
+ * that they are designed to work under any OS running on particular
+ * CPU, which is why you don't find any #ifdef THIS_OR_THAT_OS in
+ * this function. */
+#if	defined(INSTRUCTION_POINTER_IMPLEMENTED)
+    INSTRUCTION_POINTER_IMPLEMENTED(ret);
+#elif	defined(__GNUC__) && __GNUC__>=2
+# if	defined(__alpha) || defined(__alpha__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"br	%0,1f\n1:" : "=r"(ret) );
+# elif	defined(__i386) || defined(__i386__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"call 1f\n1:	popl %0" : "=r"(ret) );
+    ret = (void *)((size_t)ret&~3UL); /* align for better performance */
+# elif	defined(__ia64) || defined(__ia64__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"mov	%0=ip" : "=r"(ret) );
+# elif	defined(__hppa) || defined(__hppa__) || defined(__pa_risc)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"blr	%%r0,%0\n\tnop" : "=r"(ret) );
+    ret = (void *)((size_t)ret&~3UL); /* mask privilege level */
+# elif	defined(__mips) || defined(__mips__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    __asm __volatile (	"move	%1,$31\n\t"	/* save ra */
+			"bal	.+8; nop\n\t"
+			"move	%0,$31\n\t"
+			"move	$31,%1"		/* restore ra */
+			: "=r"(ret),"=r"(scratch) );
+# elif	defined(__ppc__) || defined(__powerpc) || defined(__powerpc__) || \
+	defined(__POWERPC__) || defined(_POWER) || defined(__PPC__) || \
+	defined(__PPC64__) || defined(__powerpc64__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    __asm __volatile (	"mfspr	%1,8\n\t"	/* save lr */
+			"bl	.+4\n\t"
+			"mfspr	%0,8\n\t"	/* mflr ret */
+			"mtspr	8,%1"		/* restore lr */
+			: "=r"(ret),"=r"(scratch) );
+# elif	defined(__sparc) || defined(__sparc__) || defined(__sparcv9)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    __asm __volatile (	"mov	%%o7,%1\n\t"
+			"call	.+8; nop\n\t"
+		  	"mov	%%o7,%0\n\t"
+			"mov	%1,%%o7"
+			: "=r"(ret),"=r"(scratch) );
+# elif	defined(__x86_64) || defined(__x86_64__)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    __asm __volatile (	"leaq	0(%%rip),%0" : "=r"(ret) );
+    ret = (void *)((size_t)ret&~3UL); /* align for better performance */
+# endif
+#elif	defined(__DECC) && defined(__alpha)
+#   define INSTRUCTION_POINTER_IMPLEMENTED
+    ret = (void *)(size_t)asm("br %v0,1f\n1:");
+#elif   defined(_MSC_VER) && defined(_M_IX86)
+#   undef INSTRUCTION_POINTER_IMPLEMENTED
+    void *scratch;
+    _asm {
+            call    self
+    self:   pop     eax
+            mov     scratch,eax
+         }
+    ret = (void *)((size_t)scratch&~3UL);
+#endif
+  return ret;
+}
+
+/*
+ * This function returns pointer to an instruction in the vicinity of
+ * its entry point, but not outside this object module. This guarantees
+ * that sequestered code is covered...
+ */
+void *FIPS_ref_point()
+{
+#if	defined(INSTRUCTION_POINTER_IMPLEMENTED)
+    return instruction_pointer();
+/* Below we essentially cover vendor compilers which do not support
+ * inline assembler... */
+#elif	defined(_AIX)
+    struct { void *ip,*gp,*env; } *p = (void *)instruction_pointer;
+    return p->ip;
+#elif	defined(_HPUX_SOURCE)
+# if	defined(__hppa) || defined(__hppa__)
+    struct { void *i[4]; } *p = (void *)FIPS_ref_point;
+
+    if (sizeof(p) == 8)	/* 64-bit */
+	return p->i[2];
+    else if ((size_t)p & 2)
+    {	p = (void *)((size_t)p&~3UL);
+	return p->i[0];
+    }
+    else
+	return (void *)p;
+# elif	defined(__ia64) || defined(__ia64__)
+    struct { unsigned long long ip,gp; } *p=(void *)instruction_pointer;
+    return (void *)(size_t)p->ip;
+# endif
+#elif	(defined(__VMS) || defined(VMS)) && !(defined(vax) || defined(__vax__))
+    /* applies to both alpha and ia64 */
+    struct { unsigned __int64 opaque,ip; } *p=(void *)instruction_pointer;
+    return (void *)(size_t)p->ip;
+#elif	defined(__VOS__)
+    /* applies to both pa-risc and ia32 */
+    struct { void *dp,*ip,*gp; } *p = (void *)instruction_pointer;
+    return p->ip;
+#elif	defined(_WIN32)
+# if	defined(_WIN64) && defined(_M_IA64)
+    struct { void *ip,*gp; } *p = (void *)FIPS_ref_point;
+    return p->ip;
+# else
+    return (void *)FIPS_ref_point;
+# endif
+/*
+ * In case you wonder why there is no #ifdef __linux. All Linux targets
+ * are GCC-based and therefore are covered by instruction_pointer above
+ * [well, some are covered by by the one below]...
+ */ 
+#elif	defined(POINTER_TO_FUNCTION_IS_POINTER_TO_1ST_INSTRUCTION)
+    return (void *)instruction_pointer;
+#else
+    return NULL;
+#endif
+}
diff --git a/src/libstrongswan/fips/fips_signer.c b/src/libstrongswan/fips/fips_signer.c
new file mode 100644
index 000000000..7fb61d5b7
--- /dev/null
+++ b/src/libstrongswan/fips/fips_signer.c
@@ -0,0 +1,63 @@
+/**
+ * @file fips_signer.c
+ * 
+ * @brief Computes a HMAC signature and stores it in fips_signature.h.
+ * 
+ */
+
+/*
+ * Copyright (C) 2007 Bruno Krieg, Daniel Wydler
+ * Hochschule fuer Technik Rapperswil, Switzerland
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <stdio.h>
+
+#include <crypto/hashers/hasher.h>
+#include "fips.h"
+
+int main(int argc, char* argv[])
+{
+	FILE *f;
+	char *hmac_key = "strongSwan Version " VERSION;
+	char  hmac_signature[BUF_LEN];
+
+	if (!fips_compute_hmac_signature(hmac_key, hmac_signature))
+	{
+		exit(1);
+	}
+	
+	/**
+     * write computed HMAC signature to fips_signature.h
+	 */
+	f = fopen("fips_signature.h", "wt");
+
+	if (f == NULL)
+	{
+		exit(1);
+	}
+	fprintf(f, "/* SHA-1 HMAC signature computed over TEXT and RODATA of libstrongswan\n");
+	fprintf(f, " *\n");
+	fprintf(f, " * This file has been automatically generated by fips_signer\n");
+	fprintf(f, " * Do not edit manually!\n");
+	fprintf(f, " */\n");
+	fprintf(f, "\n");
+	fprintf(f, "#ifndef FIPS_SIGNATURE_H_\n");
+	fprintf(f, "#define FIPS_SIGNATURE_H_\n");
+	fprintf(f, "\n");
+	fprintf(f, "const char *hmac_key = \"%s\";\n", hmac_key);
+	fprintf(f, "const char *hmac_signature = \"%s\";\n", hmac_signature);
+	fprintf(f, "\n");
+	fprintf(f, "#endif /* FIPS_SIGNATURE_H_ */\n");
+	fclose(f);
+	exit(0);
+}