From 831dc4fb790664eac043682e309049e9b4ea715b Mon Sep 17 00:00:00 2001
From: Stephan Hadinger <stephan.hadinger@gmail.com>
Date: Sun, 27 Jun 2021 15:24:03 +0200
Subject: [PATCH] TLS Remove obsolete Letsencrypt CA

---
 tasmota/tasmota_ca.ino | 74 ------------------------------------------
 1 file changed, 74 deletions(-)

diff --git a/tasmota/tasmota_ca.ino b/tasmota/tasmota_ca.ino
index f4982c688..90a90d961 100644
--- a/tasmota/tasmota_ca.ino
+++ b/tasmota/tasmota_ca.ino
@@ -23,68 +23,6 @@
 
 #if defined(USE_TLS) && defined(USE_MQTT_TLS_CA_CERT)
 
-/*********************************************************************************************\
- * LetsEncrypt IdenTrust DST Root CA X3 certificate, RSA 2048 bits SHA 256, valid until 20210417
- *
- * https://letsencrypt.org/certificates/
- * Downloaded from https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem.txt
- *
- * to convert do: "bearssl ta lets-encrypt-x3-cross-signed.pem.txt"
- * then copy and paste below, chain the generic names to the same as below
- * remove "static" and add "PROGMEM"
-\*********************************************************************************************/
-
-static const unsigned char PROGMEM LetsEncrypt_DN[] = {
-	0x30, 0x4A, 0x31, 0x0B, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
-	0x02, 0x55, 0x53, 0x31, 0x16, 0x30, 0x14, 0x06, 0x03, 0x55, 0x04, 0x0A,
-	0x13, 0x0D, 0x4C, 0x65, 0x74, 0x27, 0x73, 0x20, 0x45, 0x6E, 0x63, 0x72,
-	0x79, 0x70, 0x74, 0x31, 0x23, 0x30, 0x21, 0x06, 0x03, 0x55, 0x04, 0x03,
-	0x13, 0x1A, 0x4C, 0x65, 0x74, 0x27, 0x73, 0x20, 0x45, 0x6E, 0x63, 0x72,
-	0x79, 0x70, 0x74, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6F, 0x72, 0x69, 0x74,
-	0x79, 0x20, 0x58, 0x33
-};
-
-static const unsigned char PROGMEM LetsEncrypt_RSA_N[] = {
-	0x9C, 0xD3, 0x0C, 0xF0, 0x5A, 0xE5, 0x2E, 0x47, 0xB7, 0x72, 0x5D, 0x37,
-	0x83, 0xB3, 0x68, 0x63, 0x30, 0xEA, 0xD7, 0x35, 0x26, 0x19, 0x25, 0xE1,
-	0xBD, 0xBE, 0x35, 0xF1, 0x70, 0x92, 0x2F, 0xB7, 0xB8, 0x4B, 0x41, 0x05,
-	0xAB, 0xA9, 0x9E, 0x35, 0x08, 0x58, 0xEC, 0xB1, 0x2A, 0xC4, 0x68, 0x87,
-	0x0B, 0xA3, 0xE3, 0x75, 0xE4, 0xE6, 0xF3, 0xA7, 0x62, 0x71, 0xBA, 0x79,
-	0x81, 0x60, 0x1F, 0xD7, 0x91, 0x9A, 0x9F, 0xF3, 0xD0, 0x78, 0x67, 0x71,
-	0xC8, 0x69, 0x0E, 0x95, 0x91, 0xCF, 0xFE, 0xE6, 0x99, 0xE9, 0x60, 0x3C,
-	0x48, 0xCC, 0x7E, 0xCA, 0x4D, 0x77, 0x12, 0x24, 0x9D, 0x47, 0x1B, 0x5A,
-	0xEB, 0xB9, 0xEC, 0x1E, 0x37, 0x00, 0x1C, 0x9C, 0xAC, 0x7B, 0xA7, 0x05,
-	0xEA, 0xCE, 0x4A, 0xEB, 0xBD, 0x41, 0xE5, 0x36, 0x98, 0xB9, 0xCB, 0xFD,
-	0x6D, 0x3C, 0x96, 0x68, 0xDF, 0x23, 0x2A, 0x42, 0x90, 0x0C, 0x86, 0x74,
-	0x67, 0xC8, 0x7F, 0xA5, 0x9A, 0xB8, 0x52, 0x61, 0x14, 0x13, 0x3F, 0x65,
-	0xE9, 0x82, 0x87, 0xCB, 0xDB, 0xFA, 0x0E, 0x56, 0xF6, 0x86, 0x89, 0xF3,
-	0x85, 0x3F, 0x97, 0x86, 0xAF, 0xB0, 0xDC, 0x1A, 0xEF, 0x6B, 0x0D, 0x95,
-	0x16, 0x7D, 0xC4, 0x2B, 0xA0, 0x65, 0xB2, 0x99, 0x04, 0x36, 0x75, 0x80,
-	0x6B, 0xAC, 0x4A, 0xF3, 0x1B, 0x90, 0x49, 0x78, 0x2F, 0xA2, 0x96, 0x4F,
-	0x2A, 0x20, 0x25, 0x29, 0x04, 0xC6, 0x74, 0xC0, 0xD0, 0x31, 0xCD, 0x8F,
-	0x31, 0x38, 0x95, 0x16, 0xBA, 0xA8, 0x33, 0xB8, 0x43, 0xF1, 0xB1, 0x1F,
-	0xC3, 0x30, 0x7F, 0xA2, 0x79, 0x31, 0x13, 0x3D, 0x2D, 0x36, 0xF8, 0xE3,
-	0xFC, 0xF2, 0x33, 0x6A, 0xB9, 0x39, 0x31, 0xC5, 0xAF, 0xC4, 0x8D, 0x0D,
-	0x1D, 0x64, 0x16, 0x33, 0xAA, 0xFA, 0x84, 0x29, 0xB6, 0xD4, 0x0B, 0xC0,
-	0xD8, 0x7D, 0xC3, 0x93
-};
-
-static const unsigned char LetsEncrypt_RSA_E[] = {
-	0x01, 0x00, 0x01
-};
-
-static const br_x509_trust_anchor PROGMEM LetsEncryptX3CrossSigned_TA = {
-	{ (unsigned char *)LetsEncrypt_DN, sizeof LetsEncrypt_DN },
-	BR_X509_TA_CA,
-	{
-		BR_KEYTYPE_RSA,
-		{ .rsa = {
-			(unsigned char *)LetsEncrypt_RSA_N, sizeof LetsEncrypt_RSA_N,
-			(unsigned char *)LetsEncrypt_RSA_E, sizeof LetsEncrypt_RSA_E,
-		} }
-	}
-};
-
 /*********************************************************************************************\
  * LetsEncrypt R3 certificate, RSA 2048 bits SHA 256, valid until 20250915
  *
@@ -208,18 +146,6 @@ const br_x509_trust_anchor PROGMEM AmazonRootCA1_TA = {
 
 // cumulative CA
 const br_x509_trust_anchor PROGMEM Tasmota_TA[] = {
-	{
-		{ (unsigned char *)LetsEncrypt_DN, sizeof LetsEncrypt_DN },
-		BR_X509_TA_CA,
-		{
-			BR_KEYTYPE_RSA,
-			{ .rsa = {
-				(unsigned char *)LetsEncrypt_RSA_N, sizeof LetsEncrypt_RSA_N,
-				(unsigned char *)LetsEncrypt_RSA_E, sizeof LetsEncrypt_RSA_E,
-			} }
-		}
-	}
-	,
 	{
 		{ (unsigned char *)LetsEncryptR3_DN, sizeof LetsEncryptR3_DN },
 		BR_X509_TA_CA,