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kosmax871kosmax871
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Added AES IV retrieval from TROPIC01 and use of new R-Memory slot definitions
1 parent 3b198ba commit bab7677

2 files changed

Lines changed: 67 additions & 34 deletions

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‎wolfcrypt/src/port/tropicsquare/tropic01.c‎

Lines changed: 60 additions & 31 deletions
Original file line numberDiff line numberDiff line change
@@ -107,10 +107,10 @@ static int Tropic01_GenerateKeyED25519(byte* pubkey, int keySlot, word32 sz)
107107
#endif
108108

109109
/*
110-
* Retrive the AES key from the secure R memory of TROPIC01
110+
* Retrieve the AES key from the secure R memory of TROPIC01
111111
*/
112112

113-
static int Tropic01_GetKeyAES(Aes* aes, int keySlot, word32 keySz)
113+
static int Tropic01_GetKeyAES(byte* aesKey, int keySlot, word32 keySz)
114114
{
115115

116116
lt_ret_t rett;
@@ -119,7 +119,7 @@ static int Tropic01_GetKeyAES(Aes* aes, int keySlot, word32 keySz)
119119
keySlot
120120
);
121121

122-
if (aes == NULL || keySlot < 0 || keySlot >= 511)
122+
if (aesKey == NULL || keySlot < 0 || keySlot >= 511)
123123
return BAD_FUNC_ARG;
124124

125125

@@ -134,7 +134,7 @@ static int Tropic01_GetKeyAES(Aes* aes, int keySlot, word32 keySz)
134134

135135
/* Retrieve key from TROPIC01 */
136136

137-
rett = lt_r_mem_data_read(&g_h, keySlot, (byte*)aes->key, keySz);
137+
rett = lt_r_mem_data_read(&g_h, keySlot, aesKey, keySz);
138138
if (rett != LT_OK) {
139139
WOLFSSL_MSG_EX(
140140
"TROPIC01: Get AES Key: Failed to retrieve key, ret=%d",
@@ -149,7 +149,7 @@ static int Tropic01_GetKeyAES(Aes* aes, int keySlot, word32 keySz)
149149
}
150150

151151
/*
152-
* Retrive the ECC key from the secure R memory of TROPIC01
152+
* Retrieve the ECC key from the secure R memory of TROPIC01
153153
*/
154154
static int Tropic01_GetKeyECC(byte* ecckey, int keySlot, word32 keySz)
155155
{
@@ -195,7 +195,8 @@ static int Tropic01_GetKeyECC(byte* ecckey, int keySlot, word32 keySz)
195195
int Tropic01_CryptoCb(int devId, wc_CryptoInfo* info, void* ctx)
196196
{
197197
int ret = CRYPTOCB_UNAVAILABLE;
198-
198+
byte lt_key[TROPIC01_AES_MAX_KEY_SIZE] = {0};
199+
byte lt_iv[TROPIC01_AES_MAX_KEY_SIZE] = {0};
199200

200201
if (info == NULL)
201202
return BAD_FUNC_ARG;
@@ -296,16 +297,33 @@ int Tropic01_CryptoCb(int devId, wc_CryptoInfo* info, void* ctx)
296297
#if !defined(NO_AES)
297298
#ifdef HAVE_AESGCM
298299
if (info->cipher.type == WC_CIPHER_AES_GCM) {
299-
if (info->cipher.enc) {
300-
301-
ret = Tropic01_GetKeyAES(
302-
info->cipher.aesgcm_enc.aes,
303-
TROPIC01_AES_RMEM_SLOT_DEFAULT,
300+
ret = Tropic01_GetKeyAES(
301+
lt_key,
302+
TROPIC01_AES_KEY_RMEM_SLOT,
304303
TROPIC01_AES_MAX_KEY_SIZE);
305-
if (ret != 0) {
306-
WOLFSSL_MSG_EX(
304+
if (ret != 0) {
305+
WOLFSSL_MSG_EX(
307306
"TROPIC01: CryptoCB: Failed to get AES key,ret=%d",
308307
ret);
308+
return ret;
309+
}
310+
ret = Tropic01_GetKeyAES(
311+
lt_iv,
312+
TROPIC01_AES_IV_RMEM_SLOT,
313+
TROPIC01_AES_MAX_KEY_SIZE);
314+
if (ret != 0) {
315+
WOLFSSL_MSG_EX(
316+
"TROPIC01: CryptoCB: Failed to get AES IV, ret=%d",
317+
ret);
318+
return ret;
319+
}
320+
if (info->cipher.enc) {
321+
ret = wc_AesSetKey(info->cipher.aesgcm_enc.aes, lt_key,
322+
WC_AES_BLOCK_SIZE, lt_iv, AES_ENCRYPTION);
323+
if (ret != 0) {
324+
WOLFSSL_MSG_EX(
325+
"TROPIC01: CryptoCB: Failed to set AES key, ret=%d",
326+
ret);
309327
return ret;
310328
}
311329
/* set devId to invalid, so software is used */
@@ -327,14 +345,12 @@ int Tropic01_CryptoCb(int devId, wc_CryptoInfo* info, void* ctx)
327345
}
328346
else {
329347

330-
ret = Tropic01_GetKeyAES(
331-
info->cipher.aesgcm_dec.aes,
332-
TROPIC01_AES_RMEM_SLOT_DEFAULT,
333-
TROPIC01_AES_MAX_KEY_SIZE);
348+
ret = wc_AesSetKey(info->cipher.aesgcm_dec.aes, lt_key,
349+
WC_AES_BLOCK_SIZE, lt_iv, AES_DECRYPTION);
334350
if (ret != 0) {
335351
WOLFSSL_MSG_EX(
336-
"TROPIC01: CryptoCB: Failed to get AES key,ret=%d",
337-
ret);
352+
"TROPIC01: CryptoCB: Failed to set AES key, ret=%d",
353+
ret);
338354
return ret;
339355
}
340356
/* set devId to invalid, so software is used */
@@ -358,15 +374,30 @@ int Tropic01_CryptoCb(int devId, wc_CryptoInfo* info, void* ctx)
358374
#endif /* HAVE_AESGCM */
359375
#ifdef HAVE_AES_CBC
360376
if (info->cipher.type == WC_CIPHER_AES_CBC) {
377+
ret = Tropic01_GetKeyAES(
378+
lt_key,
379+
TROPIC01_AES_KEY_RMEM_SLOT,
380+
TROPIC01_AES_MAX_KEY_SIZE);
381+
if (ret != 0) {
382+
WOLFSSL_MSG_EX(
383+
"TROPIC01: CryptoCB: Failed to get AES key,ret=%d", ret);
384+
return ret;
385+
}
386+
ret = Tropic01_GetKeyAES(
387+
lt_iv,
388+
TROPIC01_AES_IV_RMEM_SLOT,
389+
TROPIC01_AES_MAX_KEY_SIZE);
390+
if (ret != 0) {
391+
WOLFSSL_MSG_EX(
392+
"TROPIC01: CryptoCB: Failed to get AES IV, ret=%d", ret);
393+
return ret;
394+
}
361395
if (info->cipher.enc) {
362-
363-
ret = Tropic01_GetKeyAES(
364-
info->cipher.aescbc.aes,
365-
TROPIC01_AES_RMEM_SLOT_DEFAULT,
366-
TROPIC01_AES_MAX_KEY_SIZE);
396+
ret = wc_AesSetKey(info->cipher.aescbc.aes, lt_key,
397+
WC_AES_BLOCK_SIZE, lt_iv, AES_ENCRYPTION);
367398
if (ret != 0) {
368399
WOLFSSL_MSG_EX(
369-
"TROPIC01: CryptoCB: Failed to get AES key, ret=%d",
400+
"TROPIC01: CryptoCB: Failed to set AES key, ret=%d",
370401
ret);
371402
return ret;
372403
}
@@ -383,14 +414,12 @@ int Tropic01_CryptoCb(int devId, wc_CryptoInfo* info, void* ctx)
383414
}
384415
else {
385416

386-
ret = Tropic01_GetKeyAES(
387-
info->cipher.aescbc.aes,
388-
TROPIC01_AES_RMEM_SLOT_DEFAULT,
389-
TROPIC01_AES_MAX_KEY_SIZE);
417+
ret = wc_AesSetKey(info->cipher.aescbc.aes, lt_key,
418+
WC_AES_BLOCK_SIZE, lt_iv, AES_DECRYPTION);
390419
if (ret != 0) {
391420
WOLFSSL_MSG_EX(
392-
"TROPIC01: CryptoCB: Failed to get AES key, ret=%d",
393-
ret);
421+
"TROPIC01: CryptoCB: Failed to set AES key, ret=%d",
422+
ret);
394423
return ret;
395424
}
396425
/* set devId to invalid, so software is used */

‎wolfssl/wolfcrypt/port/tropicsquare/tropic01.h‎

Lines changed: 7 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -50,13 +50,17 @@
5050

5151

5252
#define TROPIC01_AES_MAX_KEY_SIZE 32
53-
#define TROPIC01_AES_RMEM_SLOT_DEFAULT 1
53+
54+
/* R-Memory slots allocation */
55+
#define TROPIC01_AES_KEY_RMEM_SLOT 0
56+
#define TROPIC01_AES_IV_RMEM_SLOT 1
57+
#define TROPIC01_ED25519_PUB_RMEM_SLOT_DEFAULT 2
58+
#define TROPIC01_ED25519_PRIV_RMEM_SLOT_DEFAULT 3
59+
5460

5561
#define TROPIC01_ED25519_PRIV_KEY_SIZE 32
5662
#define TROPIC01_ED25519_PUB_KEY_SIZE 32
5763

58-
#define TROPIC01_ED25519_PUB_RMEM_SLOT_DEFAULT 2
59-
#define TROPIC01_ED25519_PRIV_RMEM_SLOT_DEFAULT 3
6064
#define TROPIC01_ED25519_ECC_SLOT_DEFAULT 1
6165

6266
#define PAIRING_KEY_SLOT_INDEX_0 0

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