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Fix ta bearssl #123

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Fix ta bearssl #123

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b861716
BearSSL Trust Anchor: fix keySize and dnSize
pennam Jun 13, 2025
6add536
BearSSL Trust Anchor: add debug log
pennam Jun 13, 2025
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12 changes: 10 additions & 2 deletions main/CommandHandler.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1717,7 +1717,7 @@ int brSetECTrustAnchor(const uint8_t command[], uint8_t response[])
response[3] = 1;
response[4] = 0;

uint8_t dnSize = command[4];
uint16_t dnSize = command[3] << 8 | command[4];
customTrustAnchor.dn.data = (unsigned char*)malloc(dnSize);
if(customTrustAnchor.dn.data == NULL){
return 6;
Expand All @@ -1729,7 +1729,7 @@ int brSetECTrustAnchor(const uint8_t command[], uint8_t response[])
customTrustAnchor.pkey.key_type = BR_KEYTYPE_EC;
customTrustAnchor.pkey.key.ec.curve = command[10 + dnSize];

uint8_t keySize = command[12 + dnSize];
uint16_t keySize = command[11 + dnSize] << 8 | command[12 + dnSize];
customTrustAnchor.pkey.key.ec.q = (unsigned char*)malloc(keySize);
if(customTrustAnchor.pkey.key.ec.q == NULL){
free(customTrustAnchor.dn.data);
Expand All @@ -1738,6 +1738,14 @@ int brSetECTrustAnchor(const uint8_t command[], uint8_t response[])
memcpy(customTrustAnchor.pkey.key.ec.q, &command[13 + dnSize], keySize);
customTrustAnchor.pkey.key.ec.qlen = keySize;

ESP_LOGI("TA_DN_LEN", "%d", customTrustAnchor.dn.len);
ESP_LOG_BUFFER_HEX("TA_DN", customTrustAnchor.dn.data, customTrustAnchor.dn.len);
ESP_LOGI("TA_FLAGS", "0x%02X", customTrustAnchor.flags);
ESP_LOGI("TA_CURVE_TYPE", "0x%02X", customTrustAnchor.pkey.key_type);
ESP_LOGI("TA_CURVE", "0x%02X", customTrustAnchor.pkey.key.ec.curve);
ESP_LOGI("TA_EC_LEN", "%d", customTrustAnchor.pkey.key.ec.qlen);
ESP_LOG_BUFFER_HEX("TA_EC", customTrustAnchor.pkey.key.ec.q, customTrustAnchor.pkey.key.ec.qlen);

bearsslClient.setTrustAnchors(&customTrustAnchor, 1);
response[4] = 1;

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