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feat(esp_key_mgr): Support PSRAM XTS-AES key deployments using Key Manager

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This commit is contained in:
harshal.patil
2025-06-27 15:15:26 +05:30
parent ffefa9902d
commit bba1448128
5 changed files with 125 additions and 51 deletions
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components/hal/esp32c5/include/hal/key_mgr_ll.h
+35 -4
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@@ -197,6 +197,14 @@ static inline void key_mgr_ll_set_key_usage(const esp_key_mgr_key_type_t key_typ
}
break;
case ESP_KEY_MGR_PSRAM_128_KEY:
case ESP_KEY_MGR_PSRAM_256_KEY:
if (key_usage == ESP_KEY_MGR_USE_EFUSE_KEY) {
REG_SET_BIT(KEYMNG_STATIC_REG, KEYMNG_USE_EFUSE_KEY_PSRAM);
} else {
REG_CLR_BIT(KEYMNG_STATIC_REG, KEYMNG_USE_EFUSE_KEY_PSRAM);
}
break;
default:
HAL_ASSERT(false && "Unsupported mode");
return;
@@ -225,6 +233,11 @@ static inline esp_key_mgr_key_usage_t key_mgr_ll_get_key_usage(esp_key_mgr_key_t
return (esp_key_mgr_key_usage_t) (REG_GET_BIT(KEYMNG_STATIC_REG, KEYMNG_USE_EFUSE_KEY_DS));
break;
case ESP_KEY_MGR_PSRAM_128_KEY:
case ESP_KEY_MGR_PSRAM_256_KEY:
return (esp_key_mgr_key_usage_t) (REG_GET_BIT(KEYMNG_STATIC_REG, KEYMNG_USE_EFUSE_KEY_PSRAM));
break;
default:
HAL_ASSERT(false && "Unsupported mode");
return ESP_KEY_MGR_USAGE_INVALID;
@@ -269,6 +282,11 @@ static inline void key_mgr_ll_lock_use_efuse_key_reg(esp_key_mgr_key_type_t key_
REG_SET_BIT(KEYMNG_LOCK_REG, KEYMNG_USE_EFUSE_KEY_LOCK_DS);
break;
case ESP_KEY_MGR_PSRAM_128_KEY:
case ESP_KEY_MGR_PSRAM_256_KEY:
REG_SET_BIT(KEYMNG_LOCK_REG, KEYMNG_USE_EFUSE_KEY_LOCK_PSRAM);
break;
default:
HAL_ASSERT(false && "Unsupported mode");
return;
@@ -328,6 +346,11 @@ static inline bool key_mgr_ll_is_key_deployment_valid(const esp_key_mgr_key_type
return REG_GET_FIELD(KEYMNG_KEY_VLD_REG, KEYMNG_KEY_DS_VLD);
break;
case ESP_KEY_MGR_PSRAM_128_KEY:
case ESP_KEY_MGR_PSRAM_256_KEY:
return REG_GET_FIELD(KEYMNG_KEY_VLD_REG, KEYMNG_KEY_PSRAM_VLD);
break;
default:
HAL_ASSERT(false && "Unsupported mode");
return 0;
@@ -397,15 +420,23 @@ static inline bool key_mgr_ll_is_huk_valid(void)
}
/* @brief Set the XTS-AES (Flash Encryption) key length for the Key Manager */
static inline void key_mgr_ll_set_xts_aes_key_len(const esp_key_mgr_xts_aes_key_len_t key_len)
static inline void key_mgr_ll_set_xts_aes_key_len(const esp_key_mgr_key_type_t key_type, const esp_key_mgr_xts_aes_key_len_t key_len)
{
REG_SET_FIELD(KEYMNG_STATIC_REG, KEYMNG_FLASH_KEY_LEN, key_len);
if (key_type == ESP_KEY_MGR_XTS_AES_128_KEY || key_type == ESP_KEY_MGR_XTS_AES_256_KEY) {
REG_SET_FIELD(KEYMNG_STATIC_REG, KEYMNG_FLASH_KEY_LEN, key_len);
} else if (key_type == ESP_KEY_MGR_PSRAM_128_KEY || key_type == ESP_KEY_MGR_PSRAM_256_KEY) {
REG_SET_FIELD(KEYMNG_STATIC_REG, KEYMNG_PSRAM_KEY_LEN, key_len);
}
}
/* @brief Get the XTS-AES (Flash Encryption) key length for the Key Manager */
static inline esp_key_mgr_xts_aes_key_len_t key_mgr_ll_get_xts_aes_key_len(void)
static inline esp_key_mgr_xts_aes_key_len_t key_mgr_ll_get_xts_aes_key_len(const esp_key_mgr_key_type_t key_type)
{
return (esp_key_mgr_xts_aes_key_len_t) REG_GET_FIELD(KEYMNG_STATIC_REG, KEYMNG_FLASH_KEY_LEN);
if (key_type == ESP_KEY_MGR_PSRAM_128_KEY || key_type == ESP_KEY_MGR_PSRAM_256_KEY) {
return (esp_key_mgr_xts_aes_key_len_t) REG_GET_FIELD(KEYMNG_STATIC_REG, KEYMNG_PSRAM_KEY_LEN);
} else {
return (esp_key_mgr_xts_aes_key_len_t) REG_GET_FIELD(KEYMNG_STATIC_REG, KEYMNG_FLASH_KEY_LEN);
}
}
/**