Info sul certificato del server ufficiale Signal

Questi non c'è modo di impararli:

openssl s_client \
	-connect textsecure-service.whispersystems.org:443 \
	-showcerts </dev/null 2>/dev/null | \
	openssl x509 -outform PEM > ows.crt

openssl x509 -in ows.crt -text -noout > ows.crt.info

textsecure-service.whispersystems.org:443.crt

@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

textsecure-service.whispersystems.org:443.crt.info

@@ -0,0 +1,59 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 4099 (0x1003)
+    Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C = US, ST = California, L = San Francisco, O = Open Whisper Systems, OU = Open Whisper Systems, CN = TextSecure
+        Validity
+            Not Before: Apr  7 00:00:00 2013 GMT
+            Not After : Apr  7 03:37:42 2024 GMT
+        Subject: C = US, ST = California, O = Open Whisper Systems, OU = Open Whisper Systems, CN = textsecure-service.whispersystems.org
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:a6:4f:01:00:6a:db:c6:ec:18:43:a5:87:0f:f6:
+                    c5:04:3e:2b:4a:ed:3a:d2:4e:f9:99:7a:29:d1:72:
+                    54:97:c8:49:8c:be:7c:80:a6:f3:cb:ab:3e:65:f1:
+                    0f:e0:9f:b0:da:be:af:89:6e:66:5a:ce:56:82:f1:
+                    79:06:22:a3:b5:da:c6:ce:34:94:ac:0a:e2:4c:d1:
+                    6e:89:9a:9d:ad:9c:21:6e:65:0a:0c:cc:07:f2:f9:
+                    de:a8:b8:58:de:b8:23:fc:9a:51:52:04:8e:9b:18:
+                    80:96:35:f5:2f:29:3f:bc:f7:9e:a1:14:dc:8e:b3:
+                    c7:82:1c:c3:ac:19:6f:2b:a1:01:d5:72:a9:d3:96:
+                    6b:60:61:7d:bf:32:b5:9e:7f:c3:74:02:e2:c2:48:
+                    69:30:de:41:e8:4c:5b:42:bb:13:5c:4b:30:9e:6f:
+                    a7:60:cc:a8:04:3b:10:ce:4a:cc:22:06:ae:b7:52:
+                    95:9f:ac:07:34:a4:7f:49:83:0e:31:21:c0:90:6a:
+                    61:70:a2:de:47:31:eb:79:42:4e:6d:74:2b:51:3d:
+                    9a:e5:d8:8f:ee:f6:f5:17:ac:a0:2b:6d:39:be:a5:
+                    e4:2a:21:18:77:9c:6d:07:33:9f:54:76:52:33:c8:
+                    69:52:bf:e7:71:37:49:d1:f4:84:8c:f4:5d:98:a0:
+                    f7:99
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints: 
+                CA:FALSE
+            Netscape Comment: 
+                OpenSSL Generated Certificate
+            X509v3 Subject Key Identifier: 
+                07:E0:13:50:81:39:0F:30:18:DB:5C:4C:C6:57:E4:80:DD:F1:E5:98
+            X509v3 Authority Key Identifier: 
+                keyid:01:8B:18:F1:3F:FB:39:19:44:6E:85:86:BE:94:65:32:A7:32:3C:90
+
+    Signature Algorithm: sha1WithRSAEncryption
+         b2:05:50:6d:c7:07:c7:9d:7f:61:e8:8e:4e:5c:58:5b:f9:12:
+         85:63:88:04:47:07:28:c6:ab:1b:57:5c:11:d9:f3:94:27:c5:
+         9a:ff:9b:e5:ae:b1:15:5a:12:58:de:d3:2f:7f:68:5d:b9:9e:
+         c7:33:ae:aa:bc:3d:00:5d:df:81:61:8f:92:f8:53:b3:3b:3f:
+         0e:9a:b7:05:07:85:e6:ea:ae:d9:05:63:f5:ce:ba:77:25:26:
+         d5:6c:43:54:53:fe:3a:9f:36:10:51:6a:a0:ea:4b:8b:e7:27:
+         fb:a8:ed:33:d5:d2:9b:2a:34:9f:96:e8:7b:ec:93:25:c2:47:
+         6d:5c:a3:17:0a:df:d1:fd:9d:fc:64:b9:06:5c:a5:66:9b:19:
+         6a:13:d1:d9:31:48:75:f3:2e:9a:2a:a0:eb:1f:29:f5:8e:71:
+         ca:7b:d5:6a:60:05:95:00:a4:94:4f:b3:cd:cb:5b:62:39:1d:
+         b8:e8:95:9e:55:39:e6:80:0d:d7:d5:c4:75:8b:d4:3a:e7:fc:
+         f0:a0:47:0c:e3:64:40:ec:b3:3f:01:50:67:09:2e:6d:84:d2:
+         6c:bd:4c:23:2c:b5:0b:14:be:73:c3:dd:dc:5a:51:8b:27:97:
+         e6:1b:5b:b9:7f:16:ba:9f:37:63:b9:4b:fa:bd:e3:66:72:61:
+         15:5d:75:e8