diff options
Diffstat (limited to 'engines/e_padlock.c')
| -rw-r--r-- | engines/e_padlock.c | 1887 |
1 files changed, 922 insertions, 965 deletions
diff --git a/engines/e_padlock.c b/engines/e_padlock.c index d6c67fc510..a7683c5658 100644 --- a/engines/e_padlock.c +++ b/engines/e_padlock.c @@ -3,8 +3,8 @@ * Written by Michal Ludvig <michal@logix.cz> * http://www.logix.cz/michal * - * Big thanks to Andy Polyakov for a help with optimization, - * assembler fixes, port to MS Windows and a lot of other + * Big thanks to Andy Polyakov for a help with optimization, + * assembler fixes, port to MS Windows and a lot of other * valuable work on this engine! */ @@ -62,7 +62,6 @@ * */ - #include <stdio.h> #include <string.h> @@ -72,74 +71,78 @@ #include <openssl/engine.h> #include <openssl/evp.h> #ifndef OPENSSL_NO_AES -#include <openssl/aes.h> +# include <openssl/aes.h> #endif #include <openssl/rand.h> #include <openssl/err.h> #ifndef OPENSSL_NO_HW -#ifndef OPENSSL_NO_HW_PADLOCK +# ifndef OPENSSL_NO_HW_PADLOCK /* Attempt to have a single source for both 0.9.7 and 0.9.8 :-) */ -#if (OPENSSL_VERSION_NUMBER >= 0x00908000L) -# ifndef OPENSSL_NO_DYNAMIC_ENGINE +# if (OPENSSL_VERSION_NUMBER >= 0x00908000L) +# ifndef OPENSSL_NO_DYNAMIC_ENGINE # define DYNAMIC_ENGINE -# endif -#elif (OPENSSL_VERSION_NUMBER >= 0x00907000L) -# ifdef ENGINE_DYNAMIC_SUPPORT +# endif +# elif (OPENSSL_VERSION_NUMBER >= 0x00907000L) +# ifdef ENGINE_DYNAMIC_SUPPORT # define DYNAMIC_ENGINE +# endif +# else +# error "Only OpenSSL >= 0.9.7 is supported" # endif -#else -# error "Only OpenSSL >= 0.9.7 is supported" -#endif -/* VIA PadLock AES is available *ONLY* on some x86 CPUs. - Not only that it doesn't exist elsewhere, but it - even can't be compiled on other platforms! - - In addition, because of the heavy use of inline assembler, - compiler choice is limited to GCC and Microsoft C. */ -#undef COMPILE_HW_PADLOCK -#if !defined(I386_ONLY) && !defined(OPENSSL_NO_INLINE_ASM) -# if (defined(__GNUC__) && (defined(__i386__) || defined(__i386))) || \ +/* + * VIA PadLock AES is available *ONLY* on some x86 CPUs. Not only that it + * doesn't exist elsewhere, but it even can't be compiled on other platforms! + * + * In addition, because of the heavy use of inline assembler, compiler choice + * is limited to GCC and Microsoft C. + */ +# undef COMPILE_HW_PADLOCK +# if !defined(I386_ONLY) && !defined(OPENSSL_NO_INLINE_ASM) +# if (defined(__GNUC__) && (defined(__i386__) || defined(__i386))) || \ (defined(_MSC_VER) && defined(_M_IX86)) -# define COMPILE_HW_PADLOCK -# endif -#endif +# define COMPILE_HW_PADLOCK +# endif +# endif -#ifdef OPENSSL_NO_DYNAMIC_ENGINE -#ifdef COMPILE_HW_PADLOCK -static ENGINE *ENGINE_padlock (void); -#endif +# ifdef OPENSSL_NO_DYNAMIC_ENGINE +# ifdef COMPILE_HW_PADLOCK +static ENGINE *ENGINE_padlock(void); +# endif -void ENGINE_load_padlock (void) +void ENGINE_load_padlock(void) { /* On non-x86 CPUs it just returns. */ -#ifdef COMPILE_HW_PADLOCK - ENGINE *toadd = ENGINE_padlock (); - if (!toadd) return; - ENGINE_add (toadd); - ENGINE_free (toadd); - ERR_clear_error (); -#endif +# ifdef COMPILE_HW_PADLOCK + ENGINE *toadd = ENGINE_padlock(); + if (!toadd) + return; + ENGINE_add(toadd); + ENGINE_free(toadd); + ERR_clear_error(); +# endif } -#endif +# endif -#ifdef COMPILE_HW_PADLOCK -/* We do these includes here to avoid header problems on platforms that - do not have the VIA padlock anyway... */ -#include <stdlib.h> -#ifdef _WIN32 -# include <malloc.h> -# ifndef alloca -# define alloca _alloca -# endif -#elif defined(__GNUC__) -# ifndef alloca -# define alloca(s) __builtin_alloca(s) -# endif -#endif +# ifdef COMPILE_HW_PADLOCK +/* + * We do these includes here to avoid header problems on platforms that do + * not have the VIA padlock anyway... + */ +# include <stdlib.h> +# ifdef _WIN32 +# include <malloc.h> +# ifndef alloca +# define alloca _alloca +# endif +# elif defined(__GNUC__) +# ifndef alloca +# define alloca(s) __builtin_alloca(s) +# endif +# endif /* Function for ENGINE detection and control */ static int padlock_available(void); @@ -149,139 +152,135 @@ static int padlock_init(ENGINE *e); static RAND_METHOD padlock_rand; /* Cipher Stuff */ -#ifndef OPENSSL_NO_AES -static int padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid); -#endif +# ifndef OPENSSL_NO_AES +static int padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, + const int **nids, int nid); +# endif /* Engine names */ static const char *padlock_id = "padlock"; static char padlock_name[100]; /* Available features */ -static int padlock_use_ace = 0; /* Advanced Cryptography Engine */ -static int padlock_use_rng = 0; /* Random Number Generator */ -#ifndef OPENSSL_NO_AES +static int padlock_use_ace = 0; /* Advanced Cryptography Engine */ +static int padlock_use_rng = 0; /* Random Number Generator */ +# ifndef OPENSSL_NO_AES static int padlock_aes_align_required = 1; -#endif +# endif /* ===== Engine "management" functions ===== */ /* Prepare the ENGINE structure for registration */ -static int -padlock_bind_helper(ENGINE *e) +static int padlock_bind_helper(ENGINE *e) { - /* Check available features */ - padlock_available(); - -#if 1 /* disable RNG for now, see commentary in vicinity of RNG code */ - padlock_use_rng=0; -#endif - - /* Generate a nice engine name with available features */ - BIO_snprintf(padlock_name, sizeof(padlock_name), - "VIA PadLock (%s, %s)", - padlock_use_rng ? "RNG" : "no-RNG", - padlock_use_ace ? "ACE" : "no-ACE"); - - /* Register everything or return with an error */ - if (!ENGINE_set_id(e, padlock_id) || - !ENGINE_set_name(e, padlock_name) || - - !ENGINE_set_init_function(e, padlock_init) || -#ifndef OPENSSL_NO_AES - (padlock_use_ace && !ENGINE_set_ciphers (e, padlock_ciphers)) || -#endif - (padlock_use_rng && !ENGINE_set_RAND (e, &padlock_rand))) { - return 0; - } - - /* Everything looks good */ - return 1; + /* Check available features */ + padlock_available(); + +# if 1 /* disable RNG for now, see commentary in + * vicinity of RNG code */ + padlock_use_rng = 0; +# endif + + /* Generate a nice engine name with available features */ + BIO_snprintf(padlock_name, sizeof(padlock_name), + "VIA PadLock (%s, %s)", + padlock_use_rng ? "RNG" : "no-RNG", + padlock_use_ace ? "ACE" : "no-ACE"); + + /* Register everything or return with an error */ + if (!ENGINE_set_id(e, padlock_id) || + !ENGINE_set_name(e, padlock_name) || + !ENGINE_set_init_function(e, padlock_init) || +# ifndef OPENSSL_NO_AES + (padlock_use_ace && !ENGINE_set_ciphers(e, padlock_ciphers)) || +# endif + (padlock_use_rng && !ENGINE_set_RAND(e, &padlock_rand))) { + return 0; + } + + /* Everything looks good */ + return 1; } -#ifdef OPENSSL_NO_DYNAMIC_ENGINE +# ifdef OPENSSL_NO_DYNAMIC_ENGINE /* Constructor */ -static ENGINE * -ENGINE_padlock(void) +static ENGINE *ENGINE_padlock(void) { - ENGINE *eng = ENGINE_new(); + ENGINE *eng = ENGINE_new(); - if (!eng) { - return NULL; - } + if (!eng) { + return NULL; + } - if (!padlock_bind_helper(eng)) { - ENGINE_free(eng); - return NULL; - } + if (!padlock_bind_helper(eng)) { + ENGINE_free(eng); + return NULL; + } - return eng; + return eng; } -#endif +# endif /* Check availability of the engine */ -static int -padlock_init(ENGINE *e) +static int padlock_init(ENGINE *e) { - return (padlock_use_rng || padlock_use_ace); + return (padlock_use_rng || padlock_use_ace); } -/* This stuff is needed if this ENGINE is being compiled into a self-contained - * shared-library. +/* + * This stuff is needed if this ENGINE is being compiled into a + * self-contained shared-library. */ -#ifdef DYNAMIC_ENGINE -static int -padlock_bind_fn(ENGINE *e, const char *id) +# ifdef DYNAMIC_ENGINE +static int padlock_bind_fn(ENGINE *e, const char *id) { - if (id && (strcmp(id, padlock_id) != 0)) { - return 0; - } + if (id && (strcmp(id, padlock_id) != 0)) { + return 0; + } - if (!padlock_bind_helper(e)) { - return 0; - } + if (!padlock_bind_helper(e)) { + return 0; + } - return 1; + return 1; } IMPLEMENT_DYNAMIC_CHECK_FN() -IMPLEMENT_DYNAMIC_BIND_FN (padlock_bind_fn) -#endif /* DYNAMIC_ENGINE */ - + IMPLEMENT_DYNAMIC_BIND_FN(padlock_bind_fn) +# endif /* DYNAMIC_ENGINE */ /* ===== Here comes the "real" engine ===== */ - -#ifndef OPENSSL_NO_AES +# ifndef OPENSSL_NO_AES /* Some AES-related constants */ -#define AES_BLOCK_SIZE 16 -#define AES_KEY_SIZE_128 16 -#define AES_KEY_SIZE_192 24 -#define AES_KEY_SIZE_256 32 - -/* Here we store the status information relevant to the - current context. */ -/* BIG FAT WARNING: - * Inline assembler in PADLOCK_XCRYPT_ASM() - * depends on the order of items in this structure. - * Don't blindly modify, reorder, etc! - */ -struct padlock_cipher_data -{ - unsigned char iv[AES_BLOCK_SIZE]; /* Initialization vector */ - union { unsigned int pad[4]; - struct { - int rounds:4; - int dgst:1; /* n/a in C3 */ - int align:1; /* n/a in C3 */ - int ciphr:1; /* n/a in C3 */ - unsigned int keygen:1; - int interm:1; - unsigned int encdec:1; - int ksize:2; - } b; - } cword; /* Control word */ - AES_KEY ks; /* Encryption key */ +# define AES_BLOCK_SIZE 16 +# define AES_KEY_SIZE_128 16 +# define AES_KEY_SIZE_192 24 +# define AES_KEY_SIZE_256 32 + /* + * Here we store the status information relevant to the current context. + */ + /* + * BIG FAT WARNING: Inline assembler in PADLOCK_XCRYPT_ASM() depends on + * the order of items in this structure. Don't blindly modify, reorder, + * etc! + */ +struct padlock_cipher_data { + unsigned char iv[AES_BLOCK_SIZE]; /* Initialization vector */ + union { + unsigned int pad[4]; + struct { + int rounds:4; + int dgst:1; /* n/a in C3 */ + int align:1; /* n/a in C3 */ + int ciphr:1; /* n/a in C3 */ + unsigned int keygen:1; + int interm:1; + unsigned int encdec:1; + int ksize:2; + } b; + } cword; /* Control word */ + AES_KEY ks; /* Encryption key */ }; /* @@ -291,7 +290,7 @@ struct padlock_cipher_data * so we accept the penatly... */ static volatile struct padlock_cipher_data *padlock_saved_context; -#endif +# endif /*- * ======================================================= @@ -303,7 +302,7 @@ static volatile struct padlock_cipher_data *padlock_saved_context; * argument is passed in %ecx and second - in %edx. * ======================================================= */ -#if defined(__GNUC__) && __GNUC__>=2 +# if defined(__GNUC__) && __GNUC__>=2 /* * As for excessive "push %ebx"/"pop %ebx" found all over. * When generating position-independent code GCC won't let @@ -311,105 +310,101 @@ static volatile struct padlock_cipher_data *padlock_saved_context; * in "clobber description." Therefore the trouble... */ -/* Helper function - check if a CPUID instruction - is available on this CPU */ -static int -padlock_insn_cpuid_available(void) +/* + * Helper function - check if a CPUID instruction is available on this CPU + */ +static int padlock_insn_cpuid_available(void) { - int result = -1; - - /* We're checking if the bit #21 of EFLAGS - can be toggled. If yes = CPUID is available. */ - asm volatile ( - "pushf\n" - "popl %%eax\n" - "xorl $0x200000, %%eax\n" - "movl %%eax, %%ecx\n" - "andl $0x200000, %%ecx\n" - "pushl %%eax\n" - "popf\n" - "pushf\n" - "popl %%eax\n" - "andl $0x200000, %%eax\n" - "xorl %%eax, %%ecx\n" - "movl %%ecx, %0\n" - : "=r" (result) : : "eax", "ecx"); - - return (result == 0); + int result = -1; + + /* + * We're checking if the bit #21 of EFLAGS can be toggled. If yes = + * CPUID is available. + */ + asm volatile ("pushf\n" + "popl %%eax\n" + "xorl $0x200000, %%eax\n" + "movl %%eax, %%ecx\n" + "andl $0x200000, %%ecx\n" + "pushl %%eax\n" + "popf\n" + "pushf\n" + "popl %%eax\n" + "andl $0x200000, %%eax\n" + "xorl %%eax, %%ecx\n" + "movl %%ecx, %0\n":"=r" (result)::"eax", "ecx"); + + return (result == 0); } -/* Load supported features of the CPU to see if - the PadLock is available. */ -static int -padlock_available(void) +/* + * Load supported features of the CPU to see if the PadLock is available. + */ +static int padlock_available(void) { - char vendor_string[16]; - unsigned int eax, edx; - - /* First check if the CPUID instruction is available at all... */ - if (! padlock_insn_cpuid_available()) - return 0; - - /* Are we running on the Centaur (VIA) CPU? */ - eax = 0x00000000; - vendor_string[12] = 0; - asm volatile ( - "pushl %%ebx\n" - "cpuid\n" - "movl %%ebx,(%%edi)\n" - "movl %%edx,4(%%edi)\n" - "movl %%ecx,8(%%edi)\n" - "popl %%ebx" - : "+a"(eax) : "D"(vendor_string) : "ecx", "edx"); - if (strcmp(vendor_string, "CentaurHauls") != 0) - return 0; - - /* Check for Centaur Extended Feature Flags presence */ - eax = 0xC0000000; - asm volatile ("pushl %%ebx; cpuid; popl %%ebx" - : "+a"(eax) : : "ecx", "edx"); - if (eax < 0xC0000001) - return 0; - - /* Read the Centaur Extended Feature Flags */ - eax = 0xC0000001; - asm volatile ("pushl %%ebx; cpuid; popl %%ebx" - : "+a"(eax), "=d"(edx) : : "ecx"); - - /* Fill up some flags */ - padlock_use_ace = ((edx & (0x3<<6)) == (0x3<<6)); - padlock_use_rng = ((edx & (0x3<<2)) == (0x3<<2)); - - return padlock_use_ace + padlock_use_rng; + char vendor_string[16]; + unsigned int eax, edx; + + /* First check if the CPUID instruction is available at all... */ + if (!padlock_insn_cpuid_available()) + return 0; + + /* Are we running on the Centaur (VIA) CPU? */ + eax = 0x00000000; + vendor_string[12] = 0; + asm volatile ("pushl %%ebx\n" + "cpuid\n" + "movl %%ebx,(%%edi)\n" + "movl %%edx,4(%%edi)\n" + "movl %%ecx,8(%%edi)\n" + "popl %%ebx":"+a" (eax):"D"(vendor_string):"ecx", "edx"); + if (strcmp(vendor_string, "CentaurHauls") != 0) + return 0; + + /* Check for Centaur Extended Feature Flags presence */ + eax = 0xC0000000; + asm volatile ("pushl %%ebx; cpuid; popl %%ebx":"+a" (eax)::"ecx", "edx"); + if (eax < 0xC0000001) + return 0; + + /* Read the Centaur Extended Feature Flags */ + eax = 0xC0000001; + asm volatile ("pushl %%ebx; cpuid; popl %%ebx":"+a" (eax), + "=d"(edx)::"ecx"); + + /* Fill up some flags */ + padlock_use_ace = ((edx & (0x3 << 6)) == (0x3 << 6)); + padlock_use_rng = ((edx & (0x3 << 2)) == (0x3 << 2)); + + return padlock_use_ace + padlock_use_rng; } -#ifndef OPENSSL_NO_AES -#ifndef AES_ASM +# ifndef OPENSSL_NO_AES +# ifndef AES_ASM /* Our own htonl()/ntohl() */ -static inline void -padlock_bswapl(AES_KEY *ks) +static inline void padlock_bswapl(AES_KEY *ks) { - size_t i = sizeof(ks->rd_key)/sizeof(ks->rd_key[0]); - unsigned int *key = ks->rd_key; + size_t i = sizeof(ks->rd_key) / sizeof(ks->rd_key[0]); + unsigned int *key = ks->rd_key; - while (i--) { - asm volatile ("bswapl %0" : "+r"(*key)); - key++; - } + while (i--) { + asm volatile ("bswapl %0":"+r" (*key)); + key++; + } } -#endif -#endif +# endif +# endif -/* Force key reload from memory to the CPU microcode. - Loading EFLAGS from the stack clears EFLAGS[30] - which does the trick. */ -static inline void -padlock_reload_key(void) +/* + * Force key reload from memory to the CPU microcode. Loading EFLAGS from the + * stack clears EFLAGS[30] which does the trick. + */ +static inline void padlock_reload_key(void) { - asm volatile ("pushfl; popfl"); + asm volatile ("pushfl; popfl"); } -#ifndef OPENSSL_NO_AES +# ifndef OPENSSL_NO_AES /* * This is heuristic key context tracing. At first one * believes that one should use atomic swap instructions, @@ -419,94 +414,89 @@ padlock_reload_key(void) * our key *shall* be reloaded upon thread context switch * and we are therefore set in either case... */ -static inline void -padlock_verify_context(struct padlock_cipher_data *cdata) +static inline void padlock_verify_context(struct padlock_cipher_data *cdata) { - asm volatile ( - "pushfl\n" -" btl $30,(%%esp)\n" -" jnc 1f\n" -" cmpl %2,%1\n" -" je 1f\n" -" popfl\n" -" subl $4,%%esp\n" -"1: addl $4,%%esp\n" -" movl %2,%0" - :"+m"(padlock_saved_context) - : "r"(padlock_saved_context), "r"(cdata) : "cc"); + asm volatile ("pushfl\n" + " btl $30,(%%esp)\n" + " jnc 1f\n" + " cmpl %2,%1\n" + " je 1f\n" + " popfl\n" + " subl $4,%%esp\n" + "1: addl $4,%%esp\n" + " movl %2,%0":"+m" (padlock_saved_context) + :"r"(padlock_saved_context), "r"(cdata):"cc"); } /* Template for padlock_xcrypt_* modes */ -/* BIG FAT WARNING: - * The offsets used with 'leal' instructions - * describe items of the 'padlock_cipher_data' - * structure. +/* + * BIG FAT WARNING: The offsets used with 'leal' instructions describe items + * of the 'padlock_cipher_data' structure. */ -#define PADLOCK_XCRYPT_ASM(name,rep_xcrypt) \ -static inline void *name(size_t cnt, \ - struct padlock_cipher_data *cdata, \ - void *out, const void *inp) \ -{ void *iv; \ - asm volatile ( "pushl %%ebx\n" \ - " leal 16(%0),%%edx\n" \ - " leal 32(%0),%%ebx\n" \ - rep_xcrypt "\n" \ - " popl %%ebx" \ - : "=a"(iv), "=c"(cnt), "=D"(out), "=S"(inp) \ - : "0"(cdata), "1"(cnt), "2"(out), "3"(inp) \ - : "edx", "cc", "memory"); \ - return iv; \ +# define PADLOCK_XCRYPT_ASM(name,rep_xcrypt) \ +static inline void *name(size_t cnt, \ + struct padlock_cipher_data *cdata, \ + void *out, const void *inp) \ +{ void *iv; \ + asm volatile ( "pushl %%ebx\n" \ + " leal 16(%0),%%edx\n" \ + " leal 32(%0),%%ebx\n" \ + rep_xcrypt "\n" \ + " popl %%ebx" \ + : "=a"(iv), "=c"(cnt), "=D"(out), "=S"(inp) \ + : "0"(cdata), "1"(cnt), "2"(out), "3"(inp) \ + : "edx", "cc", "memory"); \ + return iv; \ } /* Generate all functions with appropriate opcodes */ /* rep xcryptecb */ PADLOCK_XCRYPT_ASM(padlock_xcrypt_ecb, ".byte 0xf3,0x0f,0xa7,0xc8") /* rep xcryptcbc */ -PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc, ".byte 0xf3,0x0f,0xa7,0xd0") + PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc, ".byte 0xf3,0x0f,0xa7,0xd0") /* rep xcryptcfb */ -PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb, ".byte 0xf3,0x0f,0xa7,0xe0") + PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb, ".byte 0xf3,0x0f,0xa7,0xe0") /* rep xcryptofb */ -PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb, ".byte 0xf3,0x0f,0xa7,0xe8") -#endif - + PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb, ".byte 0xf3,0x0f,0xa7,0xe8") +# endif /* The RNG call itself */ -static inline unsigned int -padlock_xstore(void *addr, unsigned int edx_in) +static inline unsigned int padlock_xstore(void *addr, unsigned int edx_in) { - unsigned int eax_out; + unsigned int eax_out; - asm volatile (".byte 0x0f,0xa7,0xc0" /* xstore */ - : "=a"(eax_out),"=m"(*(unsigned *)addr) - : "D"(addr), "d" (edx_in) - ); + asm volatile (".byte 0x0f,0xa7,0xc0" /* xstore */ + :"=a" (eax_out), "=m"(*(unsigned *)addr) + :"D"(addr), "d"(edx_in) + ); - return eax_out; + return eax_out; } -/* Why not inline 'rep movsd'? I failed to find information on what - * value in Direction Flag one can expect and consequently have to - * apply "better-safe-than-sorry" approach and assume "undefined." - * I could explicitly clear it and restore the original value upon - * return from padlock_aes_cipher, but it's presumably too much - * trouble for too little gain... - * - * In case you wonder 'rep xcrypt*' instructions above are *not* - * affected by the Direction Flag and pointers advance toward - * larger addresses unconditionally. - */ -static inline unsigned char * -padlock_memcpy(void *dst,const void *src,size_t n) +/* + * Why not inline 'rep movsd'? I failed to find information on what value in + * Direction Flag one can expect and consequently have to apply + * "better-safe-than-sorry" approach and assume "undefined." I could + * explicitly clear it and restore the original value upon return from + * padlock_aes_cipher, but it's presumably too much trouble for too little + * gain... In case you wonder 'rep xcrypt*' instructions above are *not* + * affected by the Direction Flag and pointers advance toward larger + * addresses unconditionally. + */ +static inline unsigned char *padlock_memcpy(void *dst, const void *src, + size_t n) { - long *d=dst; - const long *s=src; + long *d = dst; + const long *s = src; - n /= sizeof(*d); - do { *d++ = *s++; } while (--n); + n /= sizeof(*d); + do { + *d++ = *s++; + } while (--n); - return dst; + return dst; } -#elif defined(_MSC_VER) +# elif defined(_MSC_VER) /* * Unlike GCC these are real functions. In order to minimize impact * on performance we adhere to __fastcall calling convention in @@ -514,351 +504,292 @@ padlock_memcpy(void *dst,const void *src,size_t n) * Which kind of suits very well, as instructions in question use * both %ecx and %edx as input:-) */ -#define REP_XCRYPT(code) \ - _asm _emit 0xf3 \ - _asm _emit 0x0f _asm _emit 0xa7 \ - _asm _emit code - -/* BIG FAT WARNING: - * The offsets used with 'lea' instructions - * describe items of the 'padlock_cipher_data' - * structure. - */ -#define PADLOCK_XCRYPT_ASM(name,code) \ -static void * __fastcall \ - name (size_t cnt, void *cdata, \ - void *outp, const void *inp) \ -{ _asm mov eax,edx \ - _asm lea edx,[eax+16] \ - _asm lea ebx,[eax+32] \ - _asm mov edi,outp \ - _asm mov esi,inp \ - REP_XCRYPT(code) \ -} +# define REP_XCRYPT(code) \ + _asm _emit 0xf3 \ + _asm _emit 0x0f _asm _emit 0xa7 \ + _asm _emit code -PADLOCK_XCRYPT_ASM(padlock_xcrypt_ecb,0xc8) -PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc,0xd0) -PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb,0xe0) -PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb,0xe8) - -static int __fastcall -padlock_xstore(void *outp,unsigned int code) -{ _asm mov edi,ecx - _asm _emit 0x0f _asm _emit 0xa7 _asm _emit 0xc0 -} - -static void __fastcall -padlock_reload_key(void) -{ _asm pushfd _asm popfd } - -static void __fastcall -padlock_verify_context(void *cdata) -{ _asm { - pushfd - bt DWORD PTR[esp],30 - jnc skip - cmp ecx,padlock_saved_context - je skip - popfd - sub esp,4 - skip: add esp,4 - mov padlock_saved_context,ecx - } +/* + * BIG FAT WARNING: The offsets used with 'lea' instructions describe items + * of the 'padlock_cipher_data' structure. + */ +# define PADLOCK_XCRYPT_ASM(name,code) \ +static void * __fastcall \ + name (size_t cnt, void *cdata, \ + void *outp, const void *inp) \ +{ _asm mov eax,edx \ + _asm lea edx,[eax+16] \ + _asm lea ebx,[eax+32] \ + _asm mov edi,outp \ + _asm mov esi,inp \ + REP_XCRYPT(code) \ } -static int -padlock_available(void) -{ _asm { - pushfd - pop eax - mov ecx,eax - xor eax,1<<21 - push eax - popfd - pushfd - pop eax - xor eax,ecx - bt eax,21 - jnc noluck - mov eax,0 - cpuid - xor eax,eax - cmp ebx,'tneC' - jne noluck - cmp edx,'Hrua' - jne noluck - cmp ecx,'slua' - jne noluck - mov eax,0xC0000000 - cpuid - mov edx,eax - xor eax,eax - cmp edx,0xC0000001 - jb noluck - mov eax,0xC0000001 - cpuid - xor eax,eax - bt edx,6 - jnc skip_a - bt edx,7 - jnc skip_a - mov padlock_use_ace,1 - inc eax - skip_a: bt edx,2 - jnc skip_r - bt edx,3 - jnc skip_r - mov padlock_use_rng,1 - inc eax - skip_r: - noluck: - } -} +PADLOCK_XCRYPT_ASM(padlock_xcrypt_ecb, 0xc8) + PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc, 0xd0) + PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb, 0xe0) + PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb, 0xe8) -static void __fastcall +static int __fastcall padlock_xstore(void *outp, unsigned int code) +{ +_asm mov edi, ecx + _asm _emit 0x0f _asm _emit 0xa7 _asm _emit 0xc0} + static void __fastcall padlock_reload_key(void) +{ +_asm pushfd _asm popfd} + static void __fastcall padlock_verify_context(void *cdata) +{ + _asm { +pushfd bt DWORD PTR[esp], 30 jnc skip cmp ecx, + padlock_saved_context je skip popfd sub esp, + 4 skip:add esp, 4 mov padlock_saved_context, + ecx}} static int padlock_available(void) +{ + _asm { +pushfd pop eax mov ecx, eax xor eax, + 1 << 21 push eax popfd pushfd pop eax xor eax, ecx bt eax, + 21 jnc noluck mov eax, 0 cpuid xor eax, eax cmp ebx, + 'tneC' jne noluck cmp edx, 'Hrua' jne noluck cmp ecx, + 'slua' jne noluck mov eax, 0xC0000000 cpuid mov edx, + eax xor eax, eax cmp edx, 0xC0000001 jb noluck mov eax, + 0xC0000001 cpuid xor eax, eax bt edx, 6 jnc skip_a bt edx, + 7 jnc skip_a mov padlock_use_ace, 1 inc eax skip_a:bt edx, + 2 jnc skip_r bt edx, 3 jnc skip_r mov padlock_use_rng, + 1 inc eax skip_r:noluck:}} static void __fastcall padlock_bswapl(void *key) -{ _asm { - pushfd - cld - mov esi,ecx - mov edi,ecx - mov ecx,60 - up: lodsd - bswap eax - stosd - loop up - popfd - } -} - -/* MS actually specifies status of Direction Flag and compiler even - * manages to compile following as 'rep movsd' all by itself... +{ + _asm { +pushfd cld mov esi, ecx mov edi, ecx mov ecx, 60 up:lodsd + bswap eax stosd loop up popfd}} +/* + * MS actually specifies status of Direction Flag and compiler even manages + * to compile following as 'rep movsd' all by itself... */ -#define padlock_memcpy(o,i,n) ((unsigned char *)memcpy((o),(i),(n)&~3U)) -#endif - +# define padlock_memcpy(o,i,n) ((unsigned char *)memcpy((o),(i),(n)&~3U)) +# endif /* ===== AES encryption/decryption ===== */ -#ifndef OPENSSL_NO_AES - -#if defined(NID_aes_128_cfb128) && ! defined (NID_aes_128_cfb) -#define NID_aes_128_cfb NID_aes_128_cfb128 -#endif - -#if defined(NID_aes_128_ofb128) && ! defined (NID_aes_128_ofb) -#define NID_aes_128_ofb NID_aes_128_ofb128 -#endif - -#if defined(NID_aes_192_cfb128) && ! defined (NID_aes_192_cfb) -#define NID_aes_192_cfb NID_aes_192_cfb128 -#endif - -#if defined(NID_aes_192_ofb128) && ! defined (NID_aes_192_ofb) -#define NID_aes_192_ofb NID_aes_192_ofb128 -#endif - -#if defined(NID_aes_256_cfb128) && ! defined (NID_aes_256_cfb) -#define NID_aes_256_cfb NID_aes_256_cfb128 -#endif - -#if defined(NID_aes_256_ofb128) && ! defined (NID_aes_256_ofb) -#define NID_aes_256_ofb NID_aes_256_ofb128 -#endif - -/* List of supported ciphers. */ -static int padlock_cipher_nids[] = { - NID_aes_128_ecb, - NID_aes_128_cbc, - NID_aes_128_cfb, - NID_aes_128_ofb, - - NID_aes_192_ecb, - NID_aes_192_cbc, - NID_aes_192_cfb, - NID_aes_192_ofb, - - NID_aes_256_ecb, - NID_aes_256_cbc, - NID_aes_256_cfb, - NID_aes_256_ofb, +# ifndef OPENSSL_NO_AES +# if defined(NID_aes_128_cfb128) && ! defined (NID_aes_128_cfb) +# define NID_aes_128_cfb NID_aes_128_cfb128 +# endif +# if defined(NID_aes_128_ofb128) && ! defined (NID_aes_128_ofb) +# define NID_aes_128_ofb NID_aes_128_ofb128 +# endif +# if defined(NID_aes_192_cfb128) && ! defined (NID_aes_192_cfb) +# define NID_aes_192_cfb NID_aes_192_cfb128 +# endif +# if defined(NID_aes_192_ofb128) && ! defined (NID_aes_192_ofb) +# define NID_aes_192_ofb NID_aes_192_ofb128 +# endif +# if defined(NID_aes_256_cfb128) && ! defined (NID_aes_256_cfb) +# define NID_aes_256_cfb NID_aes_256_cfb128 +# endif +# if defined(NID_aes_256_ofb128) && ! defined (NID_aes_256_ofb) +# define NID_aes_256_ofb NID_aes_256_ofb128 +# endif +/* List of supported ciphers. */ static int padlock_cipher_nids[] = { + NID_aes_128_ecb, + NID_aes_128_cbc, + NID_aes_128_cfb, + NID_aes_128_ofb, + + NID_aes_192_ecb, + NID_aes_192_cbc, + NID_aes_192_cfb, + NID_aes_192_ofb, + + NID_aes_256_ecb, + NID_aes_256_cbc, + NID_aes_256_cfb, + NID_aes_256_ofb, }; -static int padlock_cipher_nids_num = (sizeof(padlock_cipher_nids)/ - sizeof(padlock_cipher_nids[0])); + +static int padlock_cipher_nids_num = (sizeof(padlock_cipher_nids) / + sizeof(padlock_cipher_nids[0])); /* Function prototypes ... */ static int padlock_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc); + const unsigned char *iv, int enc); static int padlock_aes_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t nbytes); - -#define NEAREST_ALIGNED(ptr) ( (unsigned char *)(ptr) + \ - ( (0x10 - ((size_t)(ptr) & 0x0F)) & 0x0F ) ) -#define ALIGNED_CIPHER_DATA(ctx) ((struct padlock_cipher_data *)\ - NEAREST_ALIGNED(ctx->cipher_data)) - -#define EVP_CIPHER_block_size_ECB AES_BLOCK_SIZE -#define EVP_CIPHER_block_size_CBC AES_BLOCK_SIZE -#define EVP_CIPHER_block_size_OFB 1 -#define EVP_CIPHER_block_size_CFB 1 - -/* Declaring so many ciphers by hand would be a pain. - Instead introduce a bit of preprocessor magic :-) */ -#define DECLARE_AES_EVP(ksize,lmode,umode) \ -static const EVP_CIPHER padlock_aes_##ksize##_##lmode = { \ - NID_aes_##ksize##_##lmode, \ - EVP_CIPHER_block_size_##umode, \ - AES_KEY_SIZE_##ksize, \ - AES_BLOCK_SIZE, \ - 0 | EVP_CIPH_##umode##_MODE, \ - padlock_aes_init_key, \ - padlock_aes_cipher, \ - NULL, \ - sizeof(struct padlock_cipher_data) + 16, \ - EVP_CIPHER_set_asn1_iv, \ - EVP_CIPHER_get_asn1_iv, \ - NULL, \ - NULL \ + const unsigned char *in, size_t nbytes); + +# define NEAREST_ALIGNED(ptr) ( (unsigned char *)(ptr) + \ + ( (0x10 - ((size_t)(ptr) & 0x0F)) & 0x0F ) ) +# define ALIGNED_CIPHER_DATA(ctx) ((struct padlock_cipher_data *)\ + NEAREST_ALIGNED(ctx->cipher_data)) + +# define EVP_CIPHER_block_size_ECB AES_BLOCK_SIZE +# define EVP_CIPHER_block_size_CBC AES_BLOCK_SIZE +# define EVP_CIPHER_block_size_OFB 1 +# define EVP_CIPHER_block_size_CFB 1 + +/* + * Declaring so many ciphers by hand would be a pain. Instead introduce a bit + * of preprocessor magic :-) + */ +# define DECLARE_AES_EVP(ksize,lmode,umode) \ +static const EVP_CIPHER padlock_aes_##ksize##_##lmode = { \ + NID_aes_##ksize##_##lmode, \ + EVP_CIPHER_block_size_##umode, \ + AES_KEY_SIZE_##ksize, \ + AES_BLOCK_SIZE, \ + 0 | EVP_CIPH_##umode##_MODE, \ + padlock_aes_init_key, \ + padlock_aes_cipher, \ + NULL, \ + sizeof(struct padlock_cipher_data) + 16, \ + EVP_CIPHER_set_asn1_iv, \ + EVP_CIPHER_get_asn1_iv, \ + NULL, \ + NULL \ } -DECLARE_AES_EVP(128,ecb,ECB); -DECLARE_AES_EVP(128,cbc,CBC); -DECLARE_AES_EVP(128,cfb,CFB); -DECLARE_AES_EVP(128,ofb,OFB); +DECLARE_AES_EVP(128, ecb, ECB); +DECLARE_AES_EVP(128, cbc, CBC); +DECLARE_AES_EVP(128, cfb, CFB); +DECLARE_AES_EVP(128, ofb, OFB); -DECLARE_AES_EVP(192,ecb,ECB); -DECLARE_AES_EVP(192,cbc,CBC); -DECLARE_AES_EVP(192,cfb,CFB); -DECLARE_AES_EVP(192,ofb,OFB); +DECLARE_AES_EVP(192, ecb, ECB); +DECLARE_AES_EVP(192, cbc, CBC); +DECLARE_AES_EVP(192, cfb, CFB); +DECLARE_AES_EVP(192, ofb, OFB); -DECLARE_AES_EVP(256,ecb,ECB); -DECLARE_AES_EVP(256,cbc,CBC); -DECLARE_AES_EVP(256,cfb,CFB); -DECLARE_AES_EVP(256,ofb,OFB); +DECLARE_AES_EVP(256, ecb, ECB); +DECLARE_AES_EVP(256, cbc, CBC); +DECLARE_AES_EVP(256, cfb, CFB); +DECLARE_AES_EVP(256, ofb, OFB); static int -padlock_ciphers (ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid) +padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, + int nid) { - /* No specific cipher => return a list of supported nids ... */ - if (!cipher) { - *nids = padlock_cipher_nids; - return padlock_cipher_nids_num; - } - - /* ... or the requested "cipher" otherwise */ - switch (nid) { - case NID_aes_128_ecb: - *cipher = &padlock_aes_128_ecb; - break; - case NID_aes_128_cbc: - *cipher = &padlock_aes_128_cbc; - break; - ca |