Fix for STM PKA ECC parameters. Improvements to the STM AES GCM code. Cleanup of hardware mutex code.

pull/3169/head
David Garske 2020-07-30 16:00:19 -07:00
parent 48e1dfc910
commit c30ffad622
3 changed files with 44 additions and 67 deletions

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@ -288,7 +288,7 @@
/* Define AES implementation includes and functions */
#if defined(STM32_CRYPTO)
/* STM32F2/F4/F7/L4 hardware AES support for ECB, CBC, CTR and GCM modes */
/* STM32F2/F4/F7/L4/L5/H7/WB55 hardware AES support for ECB, CBC, CTR and GCM modes */
#if defined(WOLFSSL_AES_DIRECT) || defined(HAVE_AESGCM) || defined(HAVE_AESCCM)
@ -4028,18 +4028,6 @@ static WC_INLINE void IncrementGcmCounter(byte* inOutCtr)
return;
}
}
#ifdef STM32_CRYPTO_AES_GCM
static WC_INLINE void DecrementGcmCounter(byte* inOutCtr)
{
int i;
/* in network byte order so start at end and work back */
for (i = AES_BLOCK_SIZE - 1; i >= AES_BLOCK_SIZE - CTR_SZ; i--) {
if (--inOutCtr[i] != 0xFF) /* we're done unless we underflow */
return;
}
}
#endif /* STM32_CRYPTO_AES_GCM */
#endif /* !FREESCALE_LTC_AES_GCM */
#if defined(GCM_SMALL) || defined(GCM_TABLE)
@ -5932,6 +5920,7 @@ static int wc_AesGcmEncrypt_STM32(Aes* aes, byte* out, const byte* in, word32 sz
#endif
word32 partial = sz % AES_BLOCK_SIZE;
word32 tag[AES_BLOCK_SIZE/sizeof(word32)];
word32 ctrInit[AES_BLOCK_SIZE/sizeof(word32)];
word32 ctr[AES_BLOCK_SIZE/sizeof(word32)];
word32 authhdr[AES_BLOCK_SIZE/sizeof(word32)];
byte* authInPadded = NULL;
@ -5961,6 +5950,7 @@ static int wc_AesGcmEncrypt_STM32(Aes* aes, byte* out, const byte* in, word32 sz
else {
GHASH(aes, NULL, 0, iv, ivSz, (byte*)ctr, AES_BLOCK_SIZE);
}
XMEMCPY(ctrInit, ctr, sizeof(ctr)); /* save off initial counter for GMAC */
/* Authentication buffer - must be 4-byte multiple zero padded */
authPadSz = authInSz % sizeof(word32);
@ -6082,16 +6072,13 @@ static int wc_AesGcmEncrypt_STM32(Aes* aes, byte* out, const byte* in, word32 sz
ret = AES_GCM_AUTH_E;
#endif /* WOLFSSL_STM32_CUBEMX */
/* hardware requires +1, so subtract it */
DecrementGcmCounter((byte*)ctr);
if (ret == 0) {
/* return authTag */
if (authTag) {
/* For STM32 GCM fallback to software if partial AES block or IV != 12 */
if (sz == 0 || partial != 0 || ivSz != GCM_NONCE_MID_SZ) {
GHASH(aes, authIn, authInSz, out, sz, authTag, authTagSz);
wc_AesEncrypt(aes, (byte*)ctr, (byte*)tag);
wc_AesEncrypt(aes, (byte*)ctrInit, (byte*)tag);
xorbuf(authTag, tag, authTagSz);
}
else {
@ -6379,6 +6366,7 @@ static int wc_AesGcmDecrypt_STM32(Aes* aes, byte* out,
word32 tag[AES_BLOCK_SIZE/sizeof(word32)];
word32 partialBlock[AES_BLOCK_SIZE/sizeof(word32)];
word32 ctr[AES_BLOCK_SIZE/sizeof(word32)];
word32 ctrInit[AES_BLOCK_SIZE/sizeof(word32)];
word32 authhdr[AES_BLOCK_SIZE/sizeof(word32)];
byte* authInPadded = NULL;
int authPadSz, wasAlloc = 0;
@ -6407,6 +6395,7 @@ static int wc_AesGcmDecrypt_STM32(Aes* aes, byte* out,
else {
GHASH(aes, NULL, 0, iv, ivSz, (byte*)ctr, AES_BLOCK_SIZE);
}
XMEMCPY(ctrInit, ctr, sizeof(ctr)); /* save off initial counter for GMAC */
/* Authentication buffer - must be 4-byte multiple zero padded */
authPadSz = authInSz % sizeof(word32);
@ -6533,13 +6522,10 @@ static int wc_AesGcmDecrypt_STM32(Aes* aes, byte* out,
ret = AES_GCM_AUTH_E;
#endif /* WOLFSSL_STM32_CUBEMX */
/* hardware requires +1, so subtract it */
DecrementGcmCounter((byte*)ctr);
/* For STM32 GCM fallback to software if partial AES block or IV != 12 */
if (sz == 0 || partial != 0 || ivSz != GCM_NONCE_MID_SZ) {
GHASH(aes, authIn, authInSz, in, sz, (byte*)tag, sizeof(tag));
wc_AesEncrypt(aes, (byte*)ctr, (byte*)partialBlock);
wc_AesEncrypt(aes, (byte*)ctrInit, (byte*)partialBlock);
xorbuf(tag, partialBlock, sizeof(tag));
}

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@ -440,32 +440,27 @@ static const uint8_t stm32_ecc192_prime[ECC192_KEYSIZE] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static const uint32_t stm32_ecc192_coef_sign = 1U;
static const uint8_t stm32_ecc192_coef[ECC192_KEYSIZE] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03
};
static const uint8_t stm32_ecc192_pointX[ECC192_KEYSIZE] = {
0x18, 0x8D, 0xA8, 0x0E, 0xB0, 0x30, 0x90, 0xF6,
0x7C, 0xBF, 0x20, 0xEB, 0x43, 0xA1, 0x88, 0x00,
0xF4, 0xFF, 0x0A, 0xFD, 0x82, 0xFF, 0x10, 0x12
};
const uint8_t stm32_ecc192_pointY[ECC192_KEYSIZE] = {
static const uint8_t stm32_ecc192_pointY[ECC192_KEYSIZE] = {
0x07, 0x19, 0x2B, 0x95, 0xFF, 0xC8, 0xDA, 0x78,
0x63, 0x10, 0x11, 0xED, 0x6B, 0x24, 0xCD, 0xD5,
0x73, 0xF9, 0x77, 0xA1, 0x1E, 0x79, 0x48, 0x11
};
const uint8_t stm32_ecc192_order[ECC192_KEYSIZE] = {
static const uint8_t stm32_ecc192_order[ECC192_KEYSIZE] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x99, 0xDE, 0xF8, 0x36,
0x14, 0x6B, 0xC9, 0xB1, 0xB4, 0xD2, 0x28, 0x31
};
const uint32_t stm32_ecc192_cofactor = 1U;
static const uint32_t stm32_ecc192_cofactor = 1U;
#endif /* ECC192 */
/* P-224 */
@ -478,38 +473,37 @@ static const uint8_t stm32_ecc224_prime[ECC224_KEYSIZE] = {
0x00, 0x00, 0x00, 0x01
};
static const uint32_t stm32_ecc224_coef_sign = 1U;
static const uint8_t stm32_ecc224_coef[ECC224_KEYSIZE] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03
};
static const uint8_t stm32_ecc224_pointX[ECC224_KEYSIZE] = {
0xB7, 0x0E, 0x0C, 0xBD, 0x6B, 0xB4, 0xBF, 0x7F,
0x32, 0x13, 0x90, 0xB9, 0x4A, 0x03, 0xC1, 0xD3,
0x56, 0xC2, 0x11, 0x22, 0x34, 0x32, 0x80, 0xD6,
0x11, 0x5C, 0x1D, 0x21
};
const uint8_t stm32_ecc224_pointY[ECC224_KEYSIZE] = {
static const uint8_t stm32_ecc224_pointY[ECC224_KEYSIZE] = {
0xBD, 0x37, 0x63, 0x88, 0xB5, 0xF7, 0x23, 0xFB,
0x4C, 0x22, 0xDF, 0xE6, 0xCD, 0x43, 0x75, 0xA0,
0x5A, 0x07, 0x47, 0x64, 0x44, 0xD5, 0x81, 0x99,
0x85, 0x00, 0x7E, 0x34
};
const uint8_t stm32_ecc224_order[ECC224_KEYSIZE] = {
static const uint8_t stm32_ecc224_order[ECC224_KEYSIZE] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x16, 0xA2,
0xE0, 0xB8, 0xF0, 0x3E, 0x13, 0xDD, 0x29, 0x45,
0x5C, 0x5C, 0x2A, 0x3D
};
const uint32_t stm32_ecc224_cofactor = 1U;
static const uint32_t stm32_ecc224_cofactor = 1U;
#endif /* ECC224 */
/* P-256 */
#ifdef ECC256
#define ECC256_KEYSIZE (32)
static const uint8_t stm32_ecc256_prime[ECC256_KEYSIZE] = {
0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@ -517,42 +511,37 @@ static const uint8_t stm32_ecc256_prime[ECC256_KEYSIZE] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static const uint32_t stm32_ecc256_coef_sign = 1U;
static const uint8_t stm32_ecc256_coef[ECC256_KEYSIZE] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03
};
static const uint8_t stm32_ecc256_pointX[ECC256_KEYSIZE] = {
0x6b, 0x17, 0xd1, 0xf2, 0xe1, 0x2c, 0x42, 0x47,
0xf8, 0xbc, 0xe6, 0xe5, 0x63, 0xa4, 0x40, 0xf2,
0x77, 0x03, 0x7d, 0x81, 0x2d, 0xeb, 0x33, 0xa0,
0xf4, 0xa1, 0x39, 0x45, 0xd8, 0x98, 0xc2, 0x96
};
const uint8_t stm32_ecc256_pointY[ECC256_KEYSIZE] = {
static const uint8_t stm32_ecc256_pointY[ECC256_KEYSIZE] = {
0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b,
0x8e, 0xe7, 0xeb, 0x4a, 0x7c, 0x0f, 0x9e, 0x16,
0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e, 0xce,
0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5
};
const uint8_t stm32_ecc256_order[ECC256_KEYSIZE] = {
static const uint8_t stm32_ecc256_order[ECC256_KEYSIZE] = {
0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xbc, 0xe6, 0xfa, 0xad, 0xa7, 0x17, 0x9e, 0x84,
0xf3, 0xb9, 0xca, 0xc2, 0xfc, 0x63, 0x25, 0x51
};
const uint32_t stm32_ecc256_cofactor = 1U;
static const uint32_t stm32_ecc256_cofactor = 1U;
#endif /* ECC256 */
/* P-384 */
#ifdef ECC384
#define ECC384_KEYSIZE (48)
static const uint8_t stm32_ecc384_prime[ECC384_KEYSIZE] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
@ -562,7 +551,6 @@ static const uint8_t stm32_ecc384_prime[ECC384_KEYSIZE] = {
0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF
};
static const uint32_t stm32_ecc384_coef_sign = 1U;
static const uint8_t stm32_ecc384_coef[ECC384_KEYSIZE] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@ -571,7 +559,6 @@ static const uint8_t stm32_ecc384_coef[ECC384_KEYSIZE] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03
};
static const uint8_t stm32_ecc384_pointX[ECC384_KEYSIZE] = {
0xAA, 0x87, 0xCA, 0x22, 0xBE, 0x8B, 0x05, 0x37,
0x8E, 0xB1, 0xC7, 0x1E, 0xF3, 0x20, 0xAD, 0x74,
@ -580,8 +567,7 @@ static const uint8_t stm32_ecc384_pointX[ECC384_KEYSIZE] = {
0x55, 0x02, 0xF2, 0x5D, 0xBF, 0x55, 0x29, 0x6C,
0x3A, 0x54, 0x5E, 0x38, 0x72, 0x76, 0x0A, 0xB7,
};
const uint8_t stm32_ecc384_pointY[ECC384_KEYSIZE] = {
static const uint8_t stm32_ecc384_pointY[ECC384_KEYSIZE] = {
0x36, 0x17, 0xDE, 0x4A, 0x96, 0x26, 0x2C, 0x6F,
0x5D, 0x9E, 0x98, 0xBF, 0x92, 0x92, 0xDC, 0x29,
0xF8, 0xF4, 0x1D, 0xBD, 0x28, 0x9A, 0x14, 0x7C,
@ -589,12 +575,17 @@ const uint8_t stm32_ecc384_pointY[ECC384_KEYSIZE] = {
0x0A, 0x60, 0xB1, 0xCE, 0x1D, 0x7E, 0x81, 0x9D,
0x7A, 0x43, 0x1D, 0x7C, 0x90, 0xEA, 0x0E, 0x5F,
};
const uint8_t stm32_ecc384_order[ECC384_KEYSIZE] = {
static const uint8_t stm32_ecc384_order[ECC384_KEYSIZE] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xC7, 0x63, 0x4D, 0x81, 0xF4, 0x37, 0x2D, 0xDF,
0x58, 0x1A, 0x0D, 0xB2, 0x48, 0xB0, 0xA7, 0x7A,
0xEC, 0xEC, 0x19, 0x6A, 0xCC, 0xC5, 0x29, 0x73
};
const uint32_t stm32_ecc384_cofactor = 1U;
static const uint32_t stm32_ecc384_cofactor = 1U;
#endif /* ECC384 */
static int stm32_get_ecc_specs(const uint8_t **prime, const uint8_t **coef,
const uint32_t **coef_sign, const uint8_t **GenPointX, const uint8_t **GenPointY,
const uint8_t **order, int size)
@ -615,6 +606,7 @@ static int stm32_get_ecc_specs(const uint8_t **prime, const uint8_t **coef,
*GenPointX = stm32_ecc224_pointX;
*GenPointY = stm32_ecc224_pointY;
*coef_sign = &stm32_ecc224_coef;
*order = stm32_ecc224_order;
break;
#endif
#ifdef ECC192
@ -624,6 +616,7 @@ static int stm32_get_ecc_specs(const uint8_t **prime, const uint8_t **coef,
*GenPointX = stm32_ecc192_pointX;
*GenPointY = stm32_ecc192_pointY;
*coef_sign = &stm32_ecc192_coef;
*order = stm32_ecc192_order;
break;
#endif
#ifdef ECC384
@ -633,6 +626,7 @@ static int stm32_get_ecc_specs(const uint8_t **prime, const uint8_t **coef,
*GenPointX = stm32_ecc384_pointX;
*GenPointY = stm32_ecc384_pointY;
*coef_sign = &stm32_ecc384_coef;
*order = stm32_ecc384_order;
break;
#endif
default:

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@ -823,33 +823,30 @@ char* wc_strsep(char **stringp, const char *delim)
static wolfSSL_Mutex wcCryptHwMutex;
static int wcCryptHwMutexInit = 0;
int wolfSSL_CryptHwMutexInit(void) {
int wolfSSL_CryptHwMutexInit(void)
{
int ret = 0;
if(wcCryptHwMutexInit == 0) {
if (wcCryptHwMutexInit == 0) {
ret = wc_InitMutex(&wcCryptHwMutex);
if(ret == 0) {
if (ret == 0) {
wcCryptHwMutexInit = 1;
}
}
return ret;
}
int wolfSSL_CryptHwMutexLock(void) {
int wolfSSL_CryptHwMutexLock(void)
{
int ret = BAD_MUTEX_E;
/* Make sure HW Mutex has been initialized */
wolfSSL_CryptHwMutexInit();
if(wcCryptHwMutexInit) {
wolfSSL_CryptHwMutexInit(); /* Make sure HW Mutex has been initialized */
if (wcCryptHwMutexInit) {
ret = wc_LockMutex(&wcCryptHwMutex);
}
return ret;
}
int wolfSSL_CryptHwMutexUnLock(void) {
int wolfSSL_CryptHwMutexUnLock(void)
{
int ret = BAD_MUTEX_E;
if(wcCryptHwMutexInit) {
if (wcCryptHwMutexInit) {
ret = wc_UnLockMutex(&wcCryptHwMutex);
}
return ret;