a1 a+b

sheet04/a1/b.txt

@@ -0,0 +1,45 @@
+We looked for the packet containing the certificate handshake with the filter: 
+tls.handshake.type == 11 and found the following certificates:
+
+
+Certificate 1:
+    Issuer: Let's Encrypt
+    Subject: www.mozilla.org
+    Valid until: 2025-07-28 10:02:46 (UTC)
+    Algorithm ID: 1.2.840.113549.1.1.1 (rsaEncryption)
+    RSA Public Key: 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
+
+
+Certificate 2:
+    Issuer: Internet Security Research Group
+    Subject: Let's Encrypt
+    Valid until: 2027-03-12 23:59:59 (UTC)
+    Algorithm ID: 1.2.840.113549.1.1.1 (rsaEncryption)
+    RSA Public Key: 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
+
+
+echo "HEX-KEY" | tr -d ' \n\r' | xxd -r -p > key.der
+openssl rsa -in key.der -inform der -pubin -out key.pem
+
+gave us the publickeys: 
+Cert 1:
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5CLbOzLV77zDuLhAdg/c
+g1JWH4xQ2DDEiCclcVk71PlrQ96Lz27eYgQtHV2mridPFJBul/MGq+xR06mmJmOt
+92/5YL4keomBYQkzlfN6CR8x4VNoV6jeyk7ZqsnOFtf2xObZgyJER/seu8tavsrf
+QagrQda9TqDeK1FT+KJzq3VLSwckGknCJRwcT1BVwwdPC1R2yI4HgdAq8fN6gaT9
+ChwXc7Hcj8BZb/kT+bb2+i9A0ZAzGfazErfCPe1pF2ZHo71/9qGCuDO2kwlEUSPr
+YKiMbeg7janXVeyv7lJlHpoRKrVzQCHC4MGzDIOVTO4TjWOe/Cq/eKSFJMaNWUJm
+HQIDAQAB
+-----END PUBLIC KEY-----
+
+Cert 2:
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuoe8XBsAOcvKCs3UZxD5
+ATylTqVhyybKUvsVAbe5KPUoHu0nsyQYOWcJDAjs4DqwO3cOvfPlOVRBDE6uQdaZ
+dN5R2+97/1i9qLcT9t4x1fJyyXJqC4N0lZxGAGQUmfOx2SLZzaiSqhwmej/+71gF
+ewiVgdtxD4774zEJuwm+UE1fj5F2PVqdnoPy6cRms+EGZkNIGIBloDcYmpuEMpex
+sr3E+BUAnSeI++JjF5ZsmydnS8TbKF5pwnnwSVzgJFDhxLyhBax7QG0AtMJBP6dY
+uC/FXJuluwme8f7rsIU5/agK70XEeOtlKsLPXzze41xNG/cLJyuqC0J3U095ah2H
+2QIDAQAB
+-----END PUBLIC KEY-----