diff --git a/Lib/test/allsans.pem b/Lib/test/allsans.pem
index bf59f30abaa..6eebde7a57f 100644
--- a/Lib/test/allsans.pem
+++ b/Lib/test/allsans.pem
@@ -1,64 +1,81 @@
 -----BEGIN PRIVATE KEY-----
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 -----END PRIVATE KEY-----
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
diff --git a/Lib/test/capath/b1930218.0 b/Lib/test/capath/b1930218.0
index 07556ff9071..730e7fd911a 100644
--- a/Lib/test/capath/b1930218.0
+++ b/Lib/test/capath/b1930218.0
@@ -1,21 +1,26 @@
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
diff --git a/Lib/test/capath/ceff1710.0 b/Lib/test/capath/ceff1710.0
index 07556ff9071..730e7fd911a 100644
--- a/Lib/test/capath/ceff1710.0
+++ b/Lib/test/capath/ceff1710.0
@@ -1,21 +1,26 @@
 -----BEGIN CERTIFICATE-----
-MIIDbTCCAlWgAwIBAgIJAILtv0HIgJGbMA0GCSqGSIb3DQEBBQUAME0xCzAJBgNV
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 -----END CERTIFICATE-----
diff --git a/Lib/test/idnsans.pem b/Lib/test/idnsans.pem
index b4a771ce7ec..e8a41fe5e56 100644
--- a/Lib/test/idnsans.pem
+++ b/Lib/test/idnsans.pem
@@ -1,64 +1,84 @@
 -----BEGIN PRIVATE KEY-----
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 -----END PRIVATE KEY-----
 Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number:
-            82:ed:bf:41:c8:80:91:9f
-    Signature Algorithm: sha1WithRSAEncryption
+            cb:2d:80:99:5a:69:52:5f
+    Signature Algorithm: sha256WithRSAEncryption
         Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
         Validity
-            Not Before: Jan 19 19:09:07 2018 GMT
-            Not After : Nov 28 19:09:07 2027 GMT
+            Not Before: Aug 29 14:23:17 2018 GMT
+            Not After : Jul  7 14:23:17 2028 GMT
         Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=idnsans
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
-                Public-Key: (2048 bit)
+                Public-Key: (3072 bit)
                 Modulus:
-                    00:de:53:c6:10:b7:27:84:8c:f2:c0:49:d3:01:3d:
-                    34:bd:41:cb:80:64:82:63:6c:94:60:af:c9:ec:45:
-                    be:fa:ee:96:e6:59:1f:42:d4:9b:83:cb:f0:73:fc:
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-                    35:16:65:7f:ea:4d:ef:a8:db:b8:bc:bb:44:33:93:
-                    4e:9b:85:19:31:01:d4:c4:a1:37:d1:70:7f:c5:90:
-                    96:a2:98:9a:9e:4e:df:6b:66:a7:3e:00:64:8d:28:
-                    cf:28:e0:6c:8f:5b:82:04:2e:76:af:98:c0:77:d3:
-                    ee:eb:28:82:4c:22:92:27:d5:ad:64:e8:cc:9b:25:
-                    87:56:35:2b:95:ab:00:2b:01:5b:d1:96:3e:6a:3a:
-                    2a:97:ec:a0:12:a2:d1:51:3f:ca:73:f8:b8:30:de:
-                    a4:44:43:38:27:67:3f:db:71:27:0a:77:ee:54:cb:
-                    8a:8c:14:f3:4e:32:38:16:ea:70:d5:eb:47:a4:37:
-                    1d:06:4f:ee:7d:13:ff:bc:eb:81:91:ab:7e:2b:35:
-                    5b:b6:48:dd:17:5d:c4:21:df:74:77:2f:0c:2b:bc:
-                    07:72:99:a2:f2:af:56:32:21:13:39:80:b3:f1:ba:
-                    0c:42:20:0d:12:62:31:b4:62:81:81:b9:44:b0:b4:
-                    d6:bb
+                    00:c0:7e:4b:df:82:74:ff:f8:04:ea:22:24:79:92:
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+                    15:d3:cb:39:30:b9:3b:8d:8f:66:1c:57:f4:ef:25:
+                    cb:06:54:64:13:8f:8b:59:55:26:c3:56:f2:f7:f0:
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+                    65:10:2b:7c:be:80:fd:95:14:31:de:a4:6c:6a:a9:
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+                    e6:0f:f4:97:6c:b7:13:8b:0b:21:1b:9a:32:ef:de:
+                    b9:38:b4:78:08:26:e3:9f:3b:24:61:dc:a8:c8:71:
+                    d8:21:98:d6:5c:67:bb:ce:be:96:eb:df:8d:60:28:
+                    13:51:2d:59:ac:03:1b:49:0a:aa:8c:7d:6b:cd:39:
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+                    c7:0e:28:8b:58:86:f9:89:d4:52:65:50:1f:0b:0d:
+                    9f:9d:58:44:a5:77:66:b8:08:87:4a:f6:5a:6e:7f:
+                    72:c3:ab:2f:b0:99:c1:93:76:7a:15:a2:2d:91:4f:
+                    af:12:0d:81:c0:6f:f6:db:b7:1d
                 Exponent: 65537 (0x10001)
         X509v3 extensions:
             X509v3 Subject Alternative Name: 
@@ -70,11 +90,11 @@ Certificate:
             X509v3 Basic Constraints: critical
                 CA:FALSE
             X509v3 Subject Key Identifier: 
-                3B:F0:22:A0:1E:9B:CE:2A:7C:AE:B1:32:1B:B0:8E:3E:33:40:E3:FA
+                54:53:0C:3C:4C:E3:63:C6:56:08:35:9C:5E:F4:C1:A1:04:3A:C2:C9
             X509v3 Authority Key Identifier: 
-                keyid:9A:CF:CF:6E:EB:71:3D:DB:3C:F1:AE:88:6B:56:72:03:CB:08:A7:48
+                keyid:DD:BF:CA:DA:E6:D1:34:BA:37:75:21:CA:6F:9A:08:28:F2:35:B6:48
                 DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
-                serial:82:ED:BF:41:C8:80:91:9B
+                serial:CB:2D:80:99:5A:69:52:5B
 
             Authority Information Access: 
                 CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
@@ -85,52 +105,65 @@ Certificate:
                 Full Name:
                   URI:http://testca.pythontest.net/testca/revocation.crl
 
-    Signature Algorithm: sha1WithRSAEncryption
-         8b:1f:d7:e4:0d:15:76:b4:f5:87:33:de:b9:84:9b:f2:c1:9b:
-         c9:97:50:f7:18:33:ed:b7:60:83:be:bb:94:1c:49:39:ae:54:
-         24:43:f7:85:d8:2a:8c:26:17:56:1e:a6:b7:63:c5:05:f1:6e:
-         f4:79:eb:fd:af:12:84:3c:28:4a:8f:b1:01:97:91:ba:18:2b:
-         ba:54:25:49:1b:5b:2e:1e:6b:33:2d:f5:07:2e:76:04:e0:a8:
-         95:25:3f:cc:c8:26:c0:30:b6:90:d2:2b:e1:e2:13:b0:a8:76:
-         f0:06:90:b9:d5:28:6b:8a:e9:72:1a:ed:4f:7e:3c:37:2e:00:
-         aa:9b:f1:29:44:94:f2:dc:c8:31:5f:4c:2d:00:d3:5e:78:6c:
-         68:fc:0e:1e:46:be:d8:2e:29:88:78:8e:7e:f5:50:c8:5c:5d:
-         5f:4c:09:d5:51:07:40:be:9b:30:ed:a3:29:68:25:6b:88:69:
-         c7:43:35:54:2f:6e:9a:30:f1:d6:87:54:84:20:ef:a5:aa:33:
-         df:00:6a:87:a9:b4:d7:89:1f:e7:60:0d:01:60:66:11:61:3f:
-         d0:9f:86:37:cc:b3:b8:48:7e:1f:d2:7a:0f:02:e7:11:1d:dd:
-         34:c4:0b:45:47:2b:05:37:dd:ee:6e:0e:1c:bd:de:24:42:50:
-         a4:07:af:e5
+    Signature Algorithm: sha256WithRSAEncryption
+         03:af:93:ab:58:98:74:3c:a1:68:53:18:13:be:56:60:77:d0:
+         a7:0e:c9:8a:02:1f:92:4d:21:18:61:d7:3e:9a:1d:aa:94:37:
+         02:59:31:3b:71:62:d9:cb:04:e8:c7:44:41:f9:0e:0d:90:d1:
+         4a:ab:4e:e2:bd:4e:60:1b:3c:eb:2a:b7:8a:ca:24:58:60:64:
+         d3:a6:20:f6:f5:98:6e:ca:5a:0a:91:63:97:58:f5:18:90:9f:
+         17:55:9f:12:cf:22:a7:31:e6:90:da:36:61:3b:d6:42:e6:18:
+         19:43:bb:17:52:28:40:a5:11:47:7f:32:fe:83:3d:c3:7d:8b:
+         17:1b:5d:f7:20:3e:bd:3b:16:3d:00:01:68:ed:76:7a:a1:af:
+         ce:cd:dd:52:7f:19:22:db:83:c1:89:b6:90:02:4e:22:bc:b1:
+         76:0c:00:ad:c5:3c:33:be:64:92:30:38:1f:b1:04:4f:53:a2:
+         4a:fb:63:80:21:8b:03:72:72:4b:df:f1:9d:08:75:f0:94:06:
+         d3:cb:7c:df:3b:80:19:58:7a:85:ca:2a:bf:b4:8c:5d:f3:b6:
+         65:24:37:b2:1d:46:da:1f:39:48:f2:eb:3a:84:98:3a:0c:59:
+         ff:0a:05:c2:2c:8c:b1:a5:a9:43:a9:8e:47:97:9a:d2:40:9c:
+         b8:c3:e6:46:1b:db:4b:85:a3:e1:e7:4e:2a:1e:b9:a6:de:ee:
+         a7:f0:63:3f:0f:e2:90:b6:82:70:4b:93:7f:e9:74:f3:ab:03:
+         9e:04:38:f1:46:2d:f6:fe:77:0f:4a:8e:66:23:74:3e:c6:5b:
+         eb:0e:dd:72:c3:46:1d:a4:f0:2f:b6:18:2e:f1:1c:f9:85:69:
+         0e:5a:37:5e:f8:ea:4b:2d:e7:63:ee:a1:e4:b9:f7:fa:a9:11:
+         65:64:a1:b7:b5:91:81:5c:4d:b5:27:b4:16:96:4b:df:fc:c4:
+         8a:26:b6:87:62:54:88:fb:1d:7d:af:97:25:65:27:38:1e:f7:
+         8c:a4:16:46:f2:d9
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
diff --git a/Lib/test/keycert.passwd.pem b/Lib/test/keycert.passwd.pem
index 0ad69605519..cbb3c3bccd2 100644
--- a/Lib/test/keycert.passwd.pem
+++ b/Lib/test/keycert.passwd.pem
@@ -1,50 +1,68 @@
 -----BEGIN RSA PRIVATE KEY-----
 Proc-Type: 4,ENCRYPTED
-DEK-Info: DES-EDE3-CBC,E74528136B90D2DD
+DEK-Info: DES-EDE3-CBC,D134E931C96D9DEC
 
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+YRfnCwFpJ54voVAuQ4jXJvigCW2qeCjXlxeD6K2j4eGJEEOmIjIW1wjubyBY6OI3
 -----END RSA PRIVATE KEY-----
 -----BEGIN CERTIFICATE-----
-MIIDWTCCAkGgAwIBAgIJAPm6B21bar2bMA0GCSqGSIb3DQEBCwUAMF8xCzAJBgNV
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+HcVKQHyOeyvnINuBAQ==
 -----END CERTIFICATE-----
diff --git a/Lib/test/keycert.pem b/Lib/test/keycert.pem
index 9545dcf4b94..0d398633739 100644
--- a/Lib/test/keycert.pem
+++ b/Lib/test/keycert.pem
@@ -1,48 +1,66 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCr77F9oBLYuLIb
-3t4mDHPoxOEnu1h7NQaJdn9tR/KjW6AzhXXm9USh45qt3sR6Wo8sDlBIJ3vZyhyW
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-eAF7J/8ECVvb0wSPTUI1N3c=
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+zNwzC+QhFTZoOomFoqMgFWujng==
 -----END PRIVATE KEY-----
 -----BEGIN CERTIFICATE-----
-MIIDWTCCAkGgAwIBAgIJAPm6B21bar2bMA0GCSqGSIb3DQEBCwUAMF8xCzAJBgNV
+MIIEWTCCAsGgAwIBAgIJAJinz4jHSjLtMA0GCSqGSIb3DQEBCwUAMF8xCzAJBgNV
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-dyUZYd8XwQaioEMKdbhLvnehyzHiWfQIUR3BdhONxoIJhHv/EAo8eCkHHYIF
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+F40sa5u7izgBTOrwpcDm/w5kC46vpRQ5fnbshVw6pne2by0mdMECASid/p25N103
+jMqTFlmO7kpf/jpCSmamp3/JSEE1BJKHwQ6Ql4nzRA2N1mnvWH7Zxcv043gkHeAu
+0x8evpvwuhdIyproejNFlBpKmW8OX7yKTCPPMC/VkX8Q1rVkxU0DQ6hmvwZlhoKa
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+HcVKQHyOeyvnINuBAQ==
 -----END CERTIFICATE-----
diff --git a/Lib/test/keycert2.pem b/Lib/test/keycert2.pem
index bb5fa65a8ac..ed6ae85a464 100644
--- a/Lib/test/keycert2.pem
+++ b/Lib/test/keycert2.pem
@@ -1,49 +1,66 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQC3ulRNfhbOAey/
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+pQPLXD8W/KK4mwDbmokYXmo=
 -----END PRIVATE KEY-----
 -----BEGIN CERTIFICATE-----
-MIIDYjCCAkqgAwIBAgIJALJXRr8qF6oIMA0GCSqGSIb3DQEBCwUAMGIxCzAJBgNV
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 -----END CERTIFICATE-----
diff --git a/Lib/test/keycert3.pem b/Lib/test/keycert3.pem
index 621eb08bb0c..e0a8205a660 100644
--- a/Lib/test/keycert3.pem
+++ b/Lib/test/keycert3.pem
@@ -1,64 +1,84 @@
 -----BEGIN PRIVATE KEY-----
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+xMlMEJ4YS768BqeKFpg0l85PRoEgTsphDeoROSUPsEPdBZ9BxIBlYKTkbKESZDGR
+twzYHljx1n1NCDYPflmrb1KpXn4EOcObNghw2KqqNUUWfOeBPwBA1FxzM4BrAStp
+DBINpGS4Dc0mjViVegECgcA3hTtm82XdxQXj9LQmb/E3lKx/7H87XIOeNMmvjYuZ
+iS9wKrkF+u42vyoDxcKMCnxP5056wpdST4p56r+SBwVTHcc3lGBSGcMTIfwRXrj3
+thOA2our2n4ouNIsYyTlcsQSzifwmpRmVMRPxl9fYVdEWUgB83FgHT0D9avvZnF9
+t9OccnGJXShAIZIBADhVj/JwG4FbaX42NijD5PNpVLk1Y17OV0I576T9SfaQoBjJ
+aH1M/zC4aVaS0DYB/Gxq7v8=
 -----END PRIVATE KEY-----
 Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number:
-            82:ed:bf:41:c8:80:91:9c
-    Signature Algorithm: sha1WithRSAEncryption
+            cb:2d:80:99:5a:69:52:5c
+    Signature Algorithm: sha256WithRSAEncryption
         Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
         Validity
-            Not Before: Jan 19 19:09:06 2018 GMT
-            Not After : Nov 28 19:09:06 2027 GMT
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Jul  7 14:23:16 2028 GMT
         Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=localhost
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
-                Public-Key: (2048 bit)
+                Public-Key: (3072 bit)
                 Modulus:
-                    00:e0:57:81:be:67:37:f6:0d:3e:67:a0:08:ac:20:
-                    61:61:9f:f6:f3:ed:59:f9:5a:25:d4:a9:b0:ec:c5:
-                    13:89:3a:1f:fb:06:d3:a5:76:e6:64:6b:4a:4f:84:
-                    5c:a5:19:b9:f1:4b:c9:75:90:45:87:44:8d:93:ea:
-                    13:a8:5b:3b:a6:07:a2:2d:2a:23:7e:4f:92:77:d2:
-                    50:2f:4b:2a:3b:8b:07:45:a0:04:3f:4b:99:cf:5d:
-                    07:e1:34:04:50:7b:f3:44:3a:14:6d:a5:cb:8d:77:
-                    2c:78:05:67:4f:74:fb:89:40:0d:40:48:d2:42:2f:
-                    07:0b:3a:84:71:68:b6:ca:2e:f6:f6:57:94:f9:14:
-                    20:24:78:d3:ed:46:f3:ee:4f:88:0a:40:8b:4c:9a:
-                    21:df:02:1a:15:0b:c3:19:58:5f:c6:0b:44:6e:90:
-                    72:0d:ca:ce:4c:c2:a7:85:7b:16:a6:f0:2c:e7:99:
-                    03:cc:62:b2:dd:86:62:93:8f:70:d3:8a:f0:8f:a2:
-                    1f:7b:10:32:05:1a:58:19:48:26:9a:60:35:50:03:
-                    e6:aa:96:8f:ea:da:98:b9:d8:f1:70:0b:52:b3:84:
-                    d1:00:ec:47:8e:a9:2c:02:d4:d4:23:c2:31:ee:85:
-                    c9:df:f5:66:f1:ae:04:ea:db:38:77:ae:fe:58:11:
-                    6d:99
+                    00:9f:28:2f:37:41:ef:7f:64:63:16:62:16:e9:01:
+                    14:62:29:ca:3a:98:92:3d:08:d3:5e:69:fe:c0:f3:
+                    d4:c4:fb:0e:58:dc:64:b0:4b:cb:b3:aa:9e:42:e9:
+                    07:9b:67:33:cd:b9:e8:3c:1d:8a:13:c0:df:39:67:
+                    7c:4c:d3:7e:bf:43:0f:4a:85:05:6d:87:e5:c3:02:
+                    a3:3e:d7:d7:b9:28:79:18:73:18:37:77:76:48:d4:
+                    78:18:d7:bd:1e:6a:46:8b:06:f3:03:37:95:0b:a0:
+                    53:b0:22:cd:8f:b7:03:36:a3:d7:23:77:99:9f:4a:
+                    e5:ad:b4:8e:be:7c:2a:a8:a7:cf:e5:f1:c7:ab:1b:
+                    d8:97:d8:61:f7:f6:9d:e2:5b:05:a8:4d:9b:98:9d:
+                    d0:00:f6:a6:2f:d3:b6:16:6a:3b:90:d4:44:96:28:
+                    f8:c7:60:64:e7:32:fb:b8:c4:8c:e2:6c:2d:66:5d:
+                    dd:8c:ea:ef:c8:8c:d3:ba:83:8d:ba:48:a1:5a:44:
+                    35:90:93:1d:35:80:85:7f:0b:22:ac:f4:38:19:a1:
+                    e3:07:90:a6:6e:3e:a6:55:3b:13:8a:f8:0f:cd:ae:
+                    6a:ea:1c:5b:0f:22:ca:ec:e7:09:3b:40:05:63:bb:
+                    9f:d7:d6:c9:29:9f:f5:06:42:59:8c:47:00:5a:41:
+                    42:ce:b3:51:5a:80:0f:b9:e1:15:d4:ea:a5:0f:5b:
+                    46:26:84:9e:31:38:1e:20:1c:70:f5:be:30:0a:12:
+                    c4:59:ef:fe:b3:73:13:32:3a:6f:8c:d4:36:ca:45:
+                    31:f8:35:68:d5:5a:99:d8:f1:76:95:19:d4:61:b5:
+                    3a:47:f4:c8:f2:72:92:a1:17:e0:f6:65:dc:b6:b5:
+                    05:ed:aa:ed:86:75:c3:27:51:e7:6d:d7:77:e7:f7:
+                    10:ee:3f:83:e8:a6:11:34:8a:9f:c8:32:09:fe:91:
+                    be:26:f5:ef:92:f8:af:65:95:d4:25:d0:1f:b8:05:
+                    c1:96:02:a1:de:96:1d:8a:b9:4d
                 Exponent: 65537 (0x10001)
         X509v3 extensions:
             X509v3 Subject Alternative Name: 
@@ -70,11 +90,11 @@ Certificate:
             X509v3 Basic Constraints: critical
                 CA:FALSE
             X509v3 Subject Key Identifier: 
-                85:11:BE:16:47:04:D1:30:EE:86:8A:18:70:BE:A8:28:6F:82:3D:CE
+                8F:EA:1D:E3:33:5C:00:16:B3:8B:6F:6B:6F:D3:4C:CB:B5:CB:7C:55
             X509v3 Authority Key Identifier: 
-                keyid:9A:CF:CF:6E:EB:71:3D:DB:3C:F1:AE:88:6B:56:72:03:CB:08:A7:48
+                keyid:DD:BF:CA:DA:E6:D1:34:BA:37:75:21:CA:6F:9A:08:28:F2:35:B6:48
                 DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
-                serial:82:ED:BF:41:C8:80:91:9B
+                serial:CB:2D:80:99:5A:69:52:5B
 
             Authority Information Access: 
                 CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
@@ -85,48 +105,60 @@ Certificate:
                 Full Name:
                   URI:http://testca.pythontest.net/testca/revocation.crl
 
-    Signature Algorithm: sha1WithRSAEncryption
-         7f:a1:7e:3e:68:01:b0:32:b8:57:b8:03:68:13:13:b3:e3:f4:
-         70:2f:15:e5:0f:87:b9:fd:e0:12:e3:16:f2:91:53:c7:4e:25:
-         af:ca:cb:a7:d9:9d:57:4d:bf:a2:80:d4:78:aa:04:31:fd:6d:
-         cc:6d:82:43:e9:62:16:0d:0e:26:8b:e7:f1:3d:57:5c:68:02:
-         9c:2b:b6:c9:fd:62:2f:10:85:88:cc:44:a5:e7:a2:3e:89:f2:
-         1f:02:6a:3f:d0:3c:6c:24:2d:bc:51:62:7a:ec:25:c5:86:87:
-         77:35:8f:f9:7e:d0:17:3d:77:56:bf:1a:0c:be:09:78:ee:ea:
-         73:97:65:60:94:91:35:b3:5c:46:8a:5e:6d:94:52:de:48:b7:
-         1f:6c:28:79:7f:ff:08:8d:e4:7d:d0:b9:0b:7c:ae:c4:1d:2a:
-         a1:b3:50:11:82:03:5e:6c:e7:26:fa:05:32:39:07:83:49:b9:
-         a2:fa:04:da:0d:e5:ff:4c:db:97:d0:c3:a7:43:37:4c:16:de:
-         3c:b5:e9:7e:82:d4:b3:10:df:d1:c1:66:72:9c:15:67:19:3b:
-         7b:91:0a:82:07:67:c5:06:03:5f:80:54:08:81:8a:b1:5c:7c:
-         4c:d2:07:38:92:eb:12:f5:71:ae:de:05:15:c8:e1:33:f0:e4:
-         96:0f:0f:1e
+    Signature Algorithm: sha256WithRSAEncryption
+         27:f5:8c:59:10:f4:c6:e7:28:00:bf:ba:8d:7b:13:03:f1:1c:
+         a6:5f:b3:06:55:a4:22:b9:db:b2:d5:46:bd:f7:0c:dd:43:6e:
+         b4:79:65:67:21:0c:2a:55:ee:40:8e:85:9f:9f:47:bb:0a:2a:
+         4d:b6:64:74:98:a0:7f:ae:dc:f1:2e:db:42:77:18:e0:75:8b:
+         26:35:68:c3:41:ed:6b:c8:77:72:6f:6a:9a:5d:55:69:02:fd:
+         5a:54:c8:57:cb:b0:65:03:16:e2:0f:00:39:99:66:a0:9b:88:
+         93:17:e2:5a:2d:79:35:5f:97:57:78:c4:af:f5:99:5e:86:ab:
+         d3:11:ad:1a:a2:0d:fa:52:10:b9:fe:bf:9d:ce:33:d9:86:b2:
+         9c:16:f8:d6:75:08:8a:db:0a:e5:b4:2b:16:7f:b4:f9:2a:9f:
+         c3:d2:77:d7:cd:65:1e:f4:6c:1e:eb:59:b9:f0:ae:5f:a4:1f:
+         cc:4a:c4:b9:7a:a9:d9:6b:32:68:3b:e1:65:b0:84:b7:90:c4:
+         ae:fe:f4:37:4f:21:a0:de:9f:3a:b1:e5:cc:16:04:66:3f:0b:
+         41:dc:42:3d:20:3e:ec:b7:95:2b:35:57:fa:be:7f:b6:3a:ba:
+         ca:4f:58:fe:75:3e:08:89:2c:8c:b0:5d:2e:f9:89:10:2b:f9:
+         41:46:4f:3c:00:b7:27:d3:65:24:28:17:23:26:31:42:ea:7e:
+         4e:93:e4:7b:68:54:ca:9f:46:f3:ef:2b:e9:85:0c:b5:84:b2:
+         d5:35:34:80:75:2b:f0:91:23:b8:08:01:8e:b9:0a:54:d4:fb:
+         34:52:fe:d9:45:f0:80:3b:b6:c1:6f:82:d1:1f:f2:3b:08:f6:
+         46:a6:96:27:61:4b:58:32:7a:0e:1d:59:c5:44:ad:5e:1a:79:
+         33:c1:d4:05:2f:4a:d3:d8:42:42:8d:33:e3:63:ca:d5:87:97:
+         9b:4d:b8:1a:03:34:bb:1c:d2:02:3f:59:23:e2:23:80:88:63:
+         c2:f0:a2:63:a8:8b
 -----BEGIN CERTIFICATE-----
-MIIE8TCCA9mgAwIBAgIJAILtv0HIgJGcMA0GCSqGSIb3DQEBBQUAME0xCzAJBgNV
+MIIF8TCCBFmgAwIBAgIJAMstgJlaaVJcMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
 BAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUgRm91bmRhdGlvbiBDQTEW
-MBQGA1UEAwwNb3VyLWNhLXNlcnZlcjAeFw0xODAxMTkxOTA5MDZaFw0yNzExMjgx
-OTA5MDZaMF8xCzAJBgNVBAYTAlhZMRcwFQYDVQQHDA5DYXN0bGUgQW50aHJheDEj
+MBQGA1UEAwwNb3VyLWNhLXNlcnZlcjAeFw0xODA4MjkxNDIzMTZaFw0yODA3MDcx
+NDIzMTZaMF8xCzAJBgNVBAYTAlhZMRcwFQYDVQQHDA5DYXN0bGUgQW50aHJheDEj
 MCEGA1UECgwaUHl0aG9uIFNvZnR3YXJlIEZvdW5kYXRpb24xEjAQBgNVBAMMCWxv
-Y2FsaG9zdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAOBXgb5nN/YN
-PmegCKwgYWGf9vPtWflaJdSpsOzFE4k6H/sG06V25mRrSk+EXKUZufFLyXWQRYdE
-jZPqE6hbO6YHoi0qI35PknfSUC9LKjuLB0WgBD9Lmc9dB+E0BFB780Q6FG2ly413
-LHgFZ090+4lADUBI0kIvBws6hHFotsou9vZXlPkUICR40+1G8+5PiApAi0yaId8C
-GhULwxlYX8YLRG6Qcg3KzkzCp4V7FqbwLOeZA8xist2GYpOPcNOK8I+iH3sQMgUa
-WBlIJppgNVAD5qqWj+ramLnY8XALUrOE0QDsR46pLALU1CPCMe6Fyd/1ZvGuBOrb
-OHeu/lgRbZkCAwEAAaOCAcAwggG8MBQGA1UdEQQNMAuCCWxvY2FsaG9zdDAOBgNV
-HQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1Ud
-EwEB/wQCMAAwHQYDVR0OBBYEFIURvhZHBNEw7oaKGHC+qChvgj3OMH0GA1UdIwR2
-MHSAFJrPz27rcT3bPPGuiGtWcgPLCKdIoVGkTzBNMQswCQYDVQQGEwJYWTEmMCQG
-A1UECgwdUHl0aG9uIFNvZnR3YXJlIEZvdW5kYXRpb24gQ0ExFjAUBgNVBAMMDW91
-ci1jYS1zZXJ2ZXKCCQCC7b9ByICRmzCBgwYIKwYBBQUHAQEEdzB1MDwGCCsGAQUF
-BzAChjBodHRwOi8vdGVzdGNhLnB5dGhvbnRlc3QubmV0L3Rlc3RjYS9weWNhY2Vy
-dC5jZXIwNQYIKwYBBQUHMAGGKWh0dHA6Ly90ZXN0Y2EucHl0aG9udGVzdC5uZXQv
-dGVzdGNhL29jc3AvMEMGA1UdHwQ8MDowOKA2oDSGMmh0dHA6Ly90ZXN0Y2EucHl0
-aG9udGVzdC5uZXQvdGVzdGNhL3Jldm9jYXRpb24uY3JsMA0GCSqGSIb3DQEBBQUA
-A4IBAQB/oX4+aAGwMrhXuANoExOz4/RwLxXlD4e5/eAS4xbykVPHTiWvysun2Z1X
-Tb+igNR4qgQx/W3MbYJD6WIWDQ4mi+fxPVdcaAKcK7bJ/WIvEIWIzESl56I+ifIf
-Amo/0DxsJC28UWJ67CXFhod3NY/5ftAXPXdWvxoMvgl47upzl2VglJE1s1xGil5t
-lFLeSLcfbCh5f/8IjeR90LkLfK7EHSqhs1ARggNebOcm+gUyOQeDSbmi+gTaDeX/
-TNuX0MOnQzdMFt48tel+gtSzEN/RwWZynBVnGTt7kQqCB2fFBgNfgFQIgYqxXHxM
-0gc4kusS9XGu3gUVyOEz8OSWDw8e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 -----END CERTIFICATE-----
diff --git a/Lib/test/keycert4.pem b/Lib/test/keycert4.pem
index b7df7f3f2c7..d1ebb82486d 100644
--- a/Lib/test/keycert4.pem
+++ b/Lib/test/keycert4.pem
@@ -1,64 +1,84 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDH/76hZAZH4cSV
-CmVZa5HEqKCjCKrcPwBECs9BS+3ibwN4x9NnFNP+tCeFGgJXl7WGFoeXgg3oK+1p
-FsOWpsRHuF3BdqkCnShSydmT8bLaGHwKeL0cPxJP5T/uW7ezPKW2VWXGMwmwRaRJ
-9dj2VCUu20vDZWSGFr9zjnjoJczBtH3RsVUgpK7euEHuQ5pIM9QSOaCo+5FPR7s7
-1nU7YqbFWtd+NhC8Og1G497B31DQlHciF6BRm6/cNGAmHaAErKUGBFdkGtFPHBn4
-vktoEg9fwxJAZLvGpoTZWrB4HRsRwVTmFdGvK+JXK225xF23AXRXp/snhSuSFeLj
-E5cpyJJ7AgMBAAECggEAQOv527X2e/sDr0XSpHZQuT/r9UBpBlnFIlFH+fBF5k0X
-GWv0ae/O6U1dzs0kmX57xG0n0ry6+vTXeleTYiH8cTOd66EzN9AAOO+hG29IGZf9
-HAEZkkO/FARc/mjzdtFnEYsjIHWM3ZWdwQx3Q28JKu6w51rQiN51g3NqOCGdF/uF
-rE5XPKsKndn+nLHvsNuApFgUYZEwdrozgUueEgRaPTUCNhzotcA9eWoBdA24XNhk
-x8Cm/bZWabXm7gBO75zl3Cu2F21ay+EuwyOZTsx6lZi6YX9/zo1mkO81Zi3tQk50
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+J1CTgMwjhwlMNCI4t4dkHd0=
 -----END PRIVATE KEY-----
 Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number:
-            82:ed:bf:41:c8:80:91:9d
-    Signature Algorithm: sha1WithRSAEncryption
+            cb:2d:80:99:5a:69:52:5d
+    Signature Algorithm: sha256WithRSAEncryption
         Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
         Validity
-            Not Before: Jan 19 19:09:06 2018 GMT
-            Not After : Nov 28 19:09:06 2027 GMT
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Jul  7 14:23:16 2028 GMT
         Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=fakehostname
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
-                Public-Key: (2048 bit)
+                Public-Key: (3072 bit)
                 Modulus:
-                    00:c7:ff:be:a1:64:06:47:e1:c4:95:0a:65:59:6b:
-                    91:c4:a8:a0:a3:08:aa:dc:3f:00:44:0a:cf:41:4b:
-                    ed:e2:6f:03:78:c7:d3:67:14:d3:fe:b4:27:85:1a:
-                    02:57:97:b5:86:16:87:97:82:0d:e8:2b:ed:69:16:
-                    c3:96:a6:c4:47:b8:5d:c1:76:a9:02:9d:28:52:c9:
-                    d9:93:f1:b2:da:18:7c:0a:78:bd:1c:3f:12:4f:e5:
-                    3f:ee:5b:b7:b3:3c:a5:b6:55:65:c6:33:09:b0:45:
-                    a4:49:f5:d8:f6:54:25:2e:db:4b:c3:65:64:86:16:
-                    bf:73:8e:78:e8:25:cc:c1:b4:7d:d1:b1:55:20:a4:
-                    ae:de:b8:41:ee:43:9a:48:33:d4:12:39:a0:a8:fb:
-                    91:4f:47:bb:3b:d6:75:3b:62:a6:c5:5a:d7:7e:36:
-                    10:bc:3a:0d:46:e3:de:c1:df:50:d0:94:77:22:17:
-                    a0:51:9b:af:dc:34:60:26:1d:a0:04:ac:a5:06:04:
-                    57:64:1a:d1:4f:1c:19:f8:be:4b:68:12:0f:5f:c3:
-                    12:40:64:bb:c6:a6:84:d9:5a:b0:78:1d:1b:11:c1:
-                    54:e6:15:d1:af:2b:e2:57:2b:6d:b9:c4:5d:b7:01:
-                    74:57:a7:fb:27:85:2b:92:15:e2:e3:13:97:29:c8:
-                    92:7b
+                    00:c6:8e:98:87:ce:ae:e0:87:18:4c:67:3a:e7:46:
+                    c1:81:0b:f7:26:c3:c1:11:10:87:5b:aa:5a:f3:fe:
+                    5f:01:15:a5:9e:8a:9b:ce:e4:76:ff:33:25:3c:c6:
+                    cd:b3:2d:4a:ea:22:bd:89:35:ff:84:8a:2f:18:9b:
+                    86:d8:99:97:25:16:b6:b8:8e:89:9a:89:29:71:4d:
+                    93:9e:dd:d3:15:f2:6e:2f:02:ae:1e:4f:69:92:7d:
+                    96:42:d7:e5:c0:ba:da:9d:cf:b5:a1:1f:18:4c:54:
+                    49:b7:03:24:d6:bd:30:b7:a8:26:e7:95:b5:f9:54:
+                    8a:10:53:01:6b:b1:25:aa:0e:21:f2:68:67:4a:de:
+                    ba:ce:4c:a1:54:28:cf:18:3e:2a:bf:05:99:26:e8:
+                    0e:1e:88:57:22:e7:07:7f:48:f0:fe:c3:4a:48:b1:
+                    c6:5b:41:6d:4c:52:be:5b:b3:9e:2e:ca:55:9a:52:
+                    6b:5f:23:c2:89:b7:a0:43:65:0f:ee:03:4e:9c:ea:
+                    2f:3a:de:c4:82:10:8e:8b:82:af:b0:ca:29:1e:24:
+                    63:4c:c5:93:1f:82:ed:dd:cd:fb:f8:06:26:41:41:
+                    7d:19:86:24:6f:aa:c7:83:49:d3:dc:b9:56:b6:21:
+                    f6:fa:08:59:60:db:df:27:7b:07:98:e0:40:08:13:
+                    53:be:ba:aa:39:87:c1:45:d5:a5:0e:31:9a:50:11:
+                    9b:b3:b2:9f:51:fd:30:0c:04:75:f5:62:65:63:1b:
+                    f9:11:74:17:9a:1d:ed:f0:87:30:75:3d:fb:9e:3c:
+                    85:f6:65:33:26:2c:d6:1b:61:b7:e7:9b:18:64:d6:
+                    79:fc:68:0b:e8:4f:df:29:37:0f:32:df:fd:a4:d8:
+                    a3:6c:bb:6e:27:f6:e4:a4:93:10:28:a8:9d:7d:58:
+                    ac:26:98:bf:0c:a4:92:80:cc:bb:f8:e6:d4:6f:84:
+                    df:90:2e:d9:d1:76:ef:8b:27:d9:b6:f6:7a:50:1c:
+                    59:98:2d:b7:6a:45:f9:a2:76:73
                 Exponent: 65537 (0x10001)
         X509v3 extensions:
             X509v3 Subject Alternative Name: 
@@ -70,11 +90,11 @@ Certificate:
             X509v3 Basic Constraints: critical
                 CA:FALSE
             X509v3 Subject Key Identifier: 
-                F8:76:79:CB:11:85:F0:46:E5:95:E6:7E:69:CB:12:5E:4E:AA:EC:4D
+                52:E0:93:AA:52:55:B7:BB:E7:A8:E0:8C:DE:41:2E:F4:07:F0:36:FB
             X509v3 Authority Key Identifier: 
-                keyid:9A:CF:CF:6E:EB:71:3D:DB:3C:F1:AE:88:6B:56:72:03:CB:08:A7:48
+                keyid:DD:BF:CA:DA:E6:D1:34:BA:37:75:21:CA:6F:9A:08:28:F2:35:B6:48
                 DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
-                serial:82:ED:BF:41:C8:80:91:9B
+                serial:CB:2D:80:99:5A:69:52:5B
 
             Authority Information Access: 
                 CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
@@ -85,48 +105,60 @@ Certificate:
                 Full Name:
                   URI:http://testca.pythontest.net/testca/revocation.crl
 
-    Signature Algorithm: sha1WithRSAEncryption
-         6d:50:8d:fb:ee:4e:93:8b:eb:47:56:ba:38:cc:80:e1:9d:c7:
-         e1:9e:1f:9c:22:0c:d2:08:9b:ed:bf:31:d9:00:ee:af:8c:56:
-         78:92:d1:7c:ba:4e:81:7f:82:1f:f4:68:99:86:91:c6:cb:57:
-         d3:b9:41:12:fa:75:53:fd:22:32:21:50:af:6b:4c:b1:34:36:
-         d1:a8:25:0a:d0:f0:f8:81:7d:69:58:6e:af:e3:d2:c4:32:87:
-         79:d7:cd:ad:0c:56:f3:15:27:10:0c:f9:57:59:53:00:ed:af:
-         5d:4d:07:86:7a:e5:f3:97:88:bc:86:b4:f1:17:46:33:55:28:
-         66:7b:70:d3:a5:12:b9:4f:c7:ed:e6:13:20:2d:f0:9e:ec:17:
-         64:cf:fd:13:14:1b:76:ba:64:ac:c5:51:b6:cd:13:0a:93:b1:
-         fd:43:09:a0:0b:44:6c:77:45:43:0b:e5:ed:70:b2:76:dc:08:
-         4a:5b:73:5f:c1:fc:7f:63:70:f8:b9:ca:3c:98:06:5f:fd:98:
-         d1:e4:e6:61:5f:09:8f:6c:18:86:98:9c:cb:3f:73:7b:3f:38:
-         f5:a7:09:20:ee:a5:63:1c:ff:8b:a6:d1:8c:e8:f4:84:3d:99:
-         38:0f:cc:e0:52:03:f9:18:05:23:76:39:de:52:ce:8e:fb:a6:
-         6e:f5:4f:c3
+    Signature Algorithm: sha256WithRSAEncryption
+         29:d2:3f:82:3f:c1:38:35:a6:bd:81:10:fe:64:ec:ff:7e:e1:
+         c6:6f:7f:86:65:f9:31:6f:fb:ef:32:4e:2f:87:c8:42:de:6c:
+         8d:b8:06:08:8f:37:70:95:7d:e1:40:d4:82:2b:8d:b3:4a:fd:
+         34:c5:9e:df:ff:01:53:4a:4f:08:f4:58:e1:74:fc:78:e3:3e:
+         71:a7:5e:66:07:ea:d2:04:31:e2:75:a8:4c:80:17:86:92:20:
+         d2:32:a7:9a:65:8b:1a:5f:f1:4c:c8:50:6d:00:fc:99:bf:69:
+         b3:48:f3:45:5a:ee:35:50:14:b8:f3:92:92:c6:9f:0e:5d:eb:
+         0d:e8:ec:f2:a4:09:6b:dc:66:2b:fc:df:4c:fc:65:a1:ae:d3:
+         b5:88:6a:a4:e7:08:1c:94:49:e0:b8:c1:04:8c:21:09:6c:55:
+         4b:2c:97:10:f1:8c:6c:d0:bb:ba:8d:93:e8:47:8b:4d:8e:7d:
+         7d:85:53:18:c8:f8:f4:8f:67:3a:b1:aa:3e:18:34:6c:3a:e6:
+         a6:c7:2f:be:83:38:f5:d5:e5:d2:17:28:61:6c:b6:49:99:21:
+         69:a4:a8:b6:94:76:fd:18:ad:35:52:45:64:fb:f1:5d:8e:bb:
+         c0:21:2e:59:55:24:af:bb:8f:b2:0a:7b:17:f0:34:97:8e:68:
+         a9:f2:d0:3e:f6:73:82:f8:7c:4e:9a:70:7d:d6:b3:8c:cc:85:
+         04:5c:02:8f:74:da:88:3a:20:a8:7e:c2:9e:b0:dd:56:1f:ce:
+         cd:42:16:c6:14:91:ad:30:e0:dc:76:f2:2c:56:ea:38:45:d8:
+         c0:3e:b8:90:fa:f3:38:99:ec:44:07:35:8f:69:62:0c:f9:ef:
+         b7:9d:e5:15:42:6e:fb:fe:4c:ff:e8:94:5a:1a:b0:80:b2:0e:
+         17:3d:e1:87:a8:08:84:93:74:68:8d:29:df:ca:0b:6a:44:32:
+         8a:51:3b:d6:38:db:bd:e3:2a:1b:5e:20:48:81:82:19:91:c6:
+         87:8c:0f:cd:51:ea
 -----BEGIN CERTIFICATE-----
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-ktF8uk6Bf4If9GiZhpHGy1fTuUES+nVT/SIyIVCva0yxNDbRqCUK0PD4gX1pWG6v
-49LEMod5182tDFbzFScQDPlXWVMA7a9dTQeGeuXzl4i8hrTxF0YzVShme3DTpRK5
-T8ft5hMgLfCe7Bdkz/0TFBt2umSsxVG2zRMKk7H9QwmgC0Rsd0VDC+XtcLJ23AhK
-W3Nfwfx/Y3D4uco8mAZf/ZjR5OZhXwmPbBiGmJzLP3N7Pzj1pwkg7qVjHP+LptGM
-6PSEPZk4D8zgUgP5GAUjdjneUs6O+6Zu9U/D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 -----END CERTIFICATE-----
diff --git a/Lib/test/keycertecc.pem b/Lib/test/keycertecc.pem
index deb484f9920..02eda2835f0 100644
--- a/Lib/test/keycertecc.pem
+++ b/Lib/test/keycertecc.pem
@@ -1,31 +1,31 @@
 -----BEGIN PRIVATE KEY-----
-MIG2AgEAMBAGByqGSM49AgEGBSuBBAAiBIGeMIGbAgEBBDDe3QWmhZX07HZbntz4
-CFqAOaoYMdYwD7Z3WPNIc2zR7p4D6BMOa7NAWjLV5A7CUw6hZANiAAQ5IVKzLLz4
-LCfcpy6fMOp+jk5KwywsU3upPtjA6E3UetxPcfnnv+gghRyDAYLN2OVqZgLMEmUo
-F1j1SM1QrbhHIuNcVxI9gPPMdumcNFSz/hqxrBRtA/8Z2gywczdNLjc=
+MIG2AgEAMBAGByqGSM49AgEGBSuBBAAiBIGeMIGbAgEBBDBL2Y5JfpzbgHw+t4Q+
+c5SHhsZcD9ylEtUMg7OyF9xW6j+3VIVORGaokcOtE0Z2Y5ehZANiAASzz/rInKUz
+onpxP5bLxmq8fmrtgRSS0jRPUOU16XKX+KtifnLbmLHQtPrctdkRRROCxnURz2fB
+ihQTJkXyBMSswNTRCs+4DUKbMAfihigMVYgdWbZPFBDleo5aeFw4/FM=
 -----END PRIVATE KEY-----
 Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number:
-            82:ed:bf:41:c8:80:91:9e
-    Signature Algorithm: sha1WithRSAEncryption
+            cb:2d:80:99:5a:69:52:5e
+    Signature Algorithm: sha256WithRSAEncryption
         Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
         Validity
-            Not Before: Jan 19 19:09:06 2018 GMT
-            Not After : Nov 28 19:09:06 2027 GMT
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Jul  7 14:23:16 2028 GMT
         Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=localhost-ecc
         Subject Public Key Info:
             Public Key Algorithm: id-ecPublicKey
                 Public-Key: (384 bit)
                 pub:
-                    04:39:21:52:b3:2c:bc:f8:2c:27:dc:a7:2e:9f:30:
-                    ea:7e:8e:4e:4a:c3:2c:2c:53:7b:a9:3e:d8:c0:e8:
-                    4d:d4:7a:dc:4f:71:f9:e7:bf:e8:20:85:1c:83:01:
-                    82:cd:d8:e5:6a:66:02:cc:12:65:28:17:58:f5:48:
-                    cd:50:ad:b8:47:22:e3:5c:57:12:3d:80:f3:cc:76:
-                    e9:9c:34:54:b3:fe:1a:b1:ac:14:6d:03:ff:19:da:
-                    0c:b0:73:37:4d:2e:37
+                    04:b3:cf:fa:c8:9c:a5:33:a2:7a:71:3f:96:cb:c6:
+                    6a:bc:7e:6a:ed:81:14:92:d2:34:4f:50:e5:35:e9:
+                    72:97:f8:ab:62:7e:72:db:98:b1:d0:b4:fa:dc:b5:
+                    d9:11:45:13:82:c6:75:11:cf:67:c1:8a:14:13:26:
+                    45:f2:04:c4:ac:c0:d4:d1:0a:cf:b8:0d:42:9b:30:
+                    07:e2:86:28:0c:55:88:1d:59:b6:4f:14:10:e5:7a:
+                    8e:5a:78:5c:38:fc:53
                 ASN1 OID: secp384r1
                 NIST CURVE: P-384
         X509v3 extensions:
@@ -38,11 +38,11 @@ Certificate:
             X509v3 Basic Constraints: critical
                 CA:FALSE
             X509v3 Subject Key Identifier: 
-                33:23:0E:15:04:83:2E:3D:BF:DA:81:6D:10:38:80:C3:C2:B0:A4:74
+                C6:82:22:BF:4F:3D:40:AD:9B:16:AD:E7:C5:ED:C4:82:EB:35:97:98
             X509v3 Authority Key Identifier: 
-                keyid:9A:CF:CF:6E:EB:71:3D:DB:3C:F1:AE:88:6B:56:72:03:CB:08:A7:48
+                keyid:DD:BF:CA:DA:E6:D1:34:BA:37:75:21:CA:6F:9A:08:28:F2:35:B6:48
                 DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
-                serial:82:ED:BF:41:C8:80:91:9B
+                serial:CB:2D:80:99:5A:69:52:5B
 
             Authority Information Access: 
                 CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
@@ -53,44 +53,54 @@ Certificate:
                 Full Name:
                   URI:http://testca.pythontest.net/testca/revocation.crl
 
-    Signature Algorithm: sha1WithRSAEncryption
-         3b:6f:97:af:7e:5f:e0:14:34:ed:57:7e:de:ce:c4:85:1e:aa:
-         84:52:94:7c:e5:ce:e9:9c:88:8b:ad:b5:4d:16:ac:af:81:ea:
-         b8:a2:e2:50:2e:cb:e9:11:bd:1b:a6:3f:0c:a2:d7:7b:67:72:
-         b3:43:16:ad:c6:87:ac:6e:ac:47:78:ef:2f:8c:86:e8:9b:d1:
-         43:8c:c1:7a:91:30:e9:14:d6:9f:41:8b:9b:0b:24:9b:78:86:
-         11:8a:fc:2b:cd:c9:13:ee:90:4f:14:33:51:a3:c4:9e:d6:06:
-         48:f5:41:12:af:f0:f2:71:40:78:f5:96:c2:5d:cf:e1:38:ff:
-         bf:10:eb:74:2f:c2:23:21:3e:27:f5:f1:f2:af:2c:62:82:31:
-         00:c8:96:1b:c3:7e:8d:71:89:e7:40:b5:67:1a:33:fb:c0:8b:
-         96:0c:36:78:25:27:82:d8:27:27:52:0f:f7:69:cd:ff:2b:92:
-         10:d3:d2:0a:db:65:ed:af:90:eb:db:76:f3:8a:7a:13:9e:c6:
-         33:57:15:42:06:13:d6:54:49:fa:84:a7:0e:1d:14:72:ca:19:
-         8e:2b:aa:a4:02:54:3c:f6:1c:23:81:7a:59:54:b0:92:65:72:
-         c8:e5:ba:9f:03:4e:30:f2:4d:45:85:e3:35:a8:b1:68:58:b9:
-         3b:20:a3:eb
+    Signature Algorithm: sha256WithRSAEncryption
+         76:e3:19:4d:34:78:50:3e:fa:63:53:d6:3f:01:87:e8:f4:a3:
+         a9:81:5b:31:d6:de:3a:98:f3:bb:70:4d:29:35:1f:b0:6a:b3:
+         9d:bf:03:2b:79:c4:f2:0b:32:f8:fc:f6:cb:13:47:28:81:fa:
+         96:b3:1a:1d:bd:4b:f6:35:df:87:ef:6e:74:63:87:3d:7e:2b:
+         c6:78:d4:8e:ef:03:e6:01:11:22:4e:1b:ef:2c:c1:c5:4e:3f:
+         4a:07:ae:92:ef:d3:ac:79:59:7c:60:89:4b:3d:39:08:ef:c4:
+         9a:dc:b0:8b:ee:5f:30:40:d3:c2:f3:f8:90:77:9d:8c:a7:07:
+         b9:5f:62:83:4d:37:fa:36:e1:1d:26:2b:cc:8f:7c:6f:f1:23:
+         87:71:48:40:ad:6b:30:16:47:4c:d7:98:bb:f5:9b:63:c8:66:
+         47:65:58:d2:c1:07:81:14:0c:25:20:87:b9:1d:ab:0b:56:db:
+         2c:ab:36:db:7f:c7:42:52:af:91:d6:fb:18:cf:94:f7:1e:25:
+         99:ce:20:78:c6:f8:69:6e:9c:53:f3:fe:90:3e:4d:ca:d5:d6:
+         ac:6e:02:17:be:4a:0f:fe:e6:14:d4:ce:25:df:17:8f:6f:b9:
+         d3:28:dc:b4:98:ef:05:6f:eb:20:14:1c:c1:e9:9d:02:7b:0e:
+         0f:e4:a8:bc:3b:62:e0:42:0c:b0:f7:a1:63:fe:98:d7:aa:b0:
+         f6:ed:ff:ab:4f:1a:9a:8f:eb:f0:86:61:d2:d3:a5:08:d0:db:
+         e4:d6:a9:0e:ec:08:6f:af:fb:ef:73:3f:47:69:97:90:b2:5a:
+         6f:31:66:a7:4c:32:0c:e9:ea:18:ce:a9:79:9c:f5:c4:42:f5:
+         68:53:b2:a4:8c:98:3f:97:34:62:61:41:0a:54:d7:0b:cd:33:
+         c8:62:62:da:f7:07:c6:c6:3b:fa:68:ca:5f:62:3e:57:db:bd:
+         cb:16:94:07:9a:b5:31:55:b8:f8:cb:b0:7f:a0:d1:82:df:71:
+         c8:90:60:b3:88:b0
 -----BEGIN CERTIFICATE-----
-MIIESzCCAzOgAwIBAgIJAILtv0HIgJGeMA0GCSqGSIb3DQEBBQUAME0xCzAJBgNV
+MIIEyzCCAzOgAwIBAgIJAMstgJlaaVJeMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
 BAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUgRm91bmRhdGlvbiBDQTEW
-MBQGA1UEAwwNb3VyLWNhLXNlcnZlcjAeFw0xODAxMTkxOTA5MDZaFw0yNzExMjgx
-OTA5MDZaMGMxCzAJBgNVBAYTAlhZMRcwFQYDVQQHDA5DYXN0bGUgQW50aHJheDEj
+MBQGA1UEAwwNb3VyLWNhLXNlcnZlcjAeFw0xODA4MjkxNDIzMTZaFw0yODA3MDcx
+NDIzMTZaMGMxCzAJBgNVBAYTAlhZMRcwFQYDVQQHDA5DYXN0bGUgQW50aHJheDEj
 MCEGA1UECgwaUHl0aG9uIFNvZnR3YXJlIEZvdW5kYXRpb24xFjAUBgNVBAMMDWxv
-Y2FsaG9zdC1lY2MwdjAQBgcqhkjOPQIBBgUrgQQAIgNiAAQ5IVKzLLz4LCfcpy6f
-MOp+jk5KwywsU3upPtjA6E3UetxPcfnnv+gghRyDAYLN2OVqZgLMEmUoF1j1SM1Q
-rbhHIuNcVxI9gPPMdumcNFSz/hqxrBRtA/8Z2gywczdNLjejggHEMIIBwDAYBgNV
+Y2FsaG9zdC1lY2MwdjAQBgcqhkjOPQIBBgUrgQQAIgNiAASzz/rInKUzonpxP5bL
+xmq8fmrtgRSS0jRPUOU16XKX+KtifnLbmLHQtPrctdkRRROCxnURz2fBihQTJkXy
+BMSswNTRCs+4DUKbMAfihigMVYgdWbZPFBDleo5aeFw4/FOjggHEMIIBwDAYBgNV
 HREEETAPgg1sb2NhbGhvc3QtZWNjMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU
-BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUMyMO
-FQSDLj2/2oFtEDiAw8KwpHQwfQYDVR0jBHYwdIAUms/PbutxPds88a6Ia1ZyA8sI
-p0ihUaRPME0xCzAJBgNVBAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUg
-Rm91bmRhdGlvbiBDQTEWMBQGA1UEAwwNb3VyLWNhLXNlcnZlcoIJAILtv0HIgJGb
+BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUxoIi
+v089QK2bFq3nxe3Egus1l5gwfQYDVR0jBHYwdIAU3b/K2ubRNLo3dSHKb5oIKPI1
+tkihUaRPME0xCzAJBgNVBAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUg
+Rm91bmRhdGlvbiBDQTEWMBQGA1UEAwwNb3VyLWNhLXNlcnZlcoIJAMstgJlaaVJb
 MIGDBggrBgEFBQcBAQR3MHUwPAYIKwYBBQUHMAKGMGh0dHA6Ly90ZXN0Y2EucHl0
 aG9udGVzdC5uZXQvdGVzdGNhL3B5Y2FjZXJ0LmNlcjA1BggrBgEFBQcwAYYpaHR0
 cDovL3Rlc3RjYS5weXRob250ZXN0Lm5ldC90ZXN0Y2Evb2NzcC8wQwYDVR0fBDww
 OjA4oDagNIYyaHR0cDovL3Rlc3RjYS5weXRob250ZXN0Lm5ldC90ZXN0Y2EvcmV2
-b2NhdGlvbi5jcmwwDQYJKoZIhvcNAQEFBQADggEBADtvl69+X+AUNO1Xft7OxIUe
-qoRSlHzlzumciIuttU0WrK+B6rii4lAuy+kRvRumPwyi13tncrNDFq3Gh6xurEd4
-7y+Mhuib0UOMwXqRMOkU1p9Bi5sLJJt4hhGK/CvNyRPukE8UM1GjxJ7WBkj1QRKv
-8PJxQHj1lsJdz+E4/78Q63QvwiMhPif18fKvLGKCMQDIlhvDfo1xiedAtWcaM/vA
-i5YMNnglJ4LYJydSD/dpzf8rkhDT0grbZe2vkOvbdvOKehOexjNXFUIGE9ZUSfqE
-pw4dFHLKGY4rqqQCVDz2HCOBellUsJJlcsjlup8DTjDyTUWF4zWosWhYuTsgo+s=
+b2NhdGlvbi5jcmwwDQYJKoZIhvcNAQELBQADggGBAHbjGU00eFA++mNT1j8Bh+j0
+o6mBWzHW3jqY87twTSk1H7Bqs52/Ayt5xPILMvj89ssTRyiB+pazGh29S/Y134fv
+bnRjhz1+K8Z41I7vA+YBESJOG+8swcVOP0oHrpLv06x5WXxgiUs9OQjvxJrcsIvu
+XzBA08Lz+JB3nYynB7lfYoNNN/o24R0mK8yPfG/xI4dxSECtazAWR0zXmLv1m2PI
+ZkdlWNLBB4EUDCUgh7kdqwtW2yyrNtt/x0JSr5HW+xjPlPceJZnOIHjG+GlunFPz
+/pA+TcrV1qxuAhe+Sg/+5hTUziXfF49vudMo3LSY7wVv6yAUHMHpnQJ7Dg/kqLw7
+YuBCDLD3oWP+mNeqsPbt/6tPGpqP6/CGYdLTpQjQ2+TWqQ7sCG+v++9zP0dpl5Cy
+Wm8xZqdMMgzp6hjOqXmc9cRC9WhTsqSMmD+XNGJhQQpU1wvNM8hiYtr3B8bGO/po
+yl9iPlfbvcsWlAeatTFVuPjLsH+g0YLfcciQYLOIsA==
 -----END CERTIFICATE-----
diff --git a/Lib/test/make_ssl_certs.py b/Lib/test/make_ssl_certs.py
index b908c40c11e..362276583f5 100644
--- a/Lib/test/make_ssl_certs.py
+++ b/Lib/test/make_ssl_certs.py
@@ -69,7 +69,7 @@ req_template = """
     dir = cadir
     database  = $dir/index.txt
     crlnumber = $dir/crl.txt
-    default_md = sha1
+    default_md = sha256
     default_days = 3600
     default_crl_days = 3600
     certificate = pycacert.pem
@@ -108,7 +108,7 @@ here = os.path.abspath(os.path.dirname(__file__))
 
 
 def make_cert_key(hostname, sign=False, extra_san='',
-                  ext='req_x509_extensions_full', key='rsa:2048'):
+                  ext='req_x509_extensions_full', key='rsa:3072'):
     print("creating cert for " + hostname)
     tempnames = []
     for i in range(3):
@@ -174,7 +174,7 @@ def make_ca():
         t.flush()
         with tempfile.NamedTemporaryFile() as f:
             args = ['req', '-new', '-days', '3650', '-extensions', 'v3_ca', '-nodes',
-                    '-newkey', 'rsa:2048', '-keyout', 'pycakey.pem',
+                    '-newkey', 'rsa:3072', '-keyout', 'pycakey.pem',
                     '-out', f.name,
                     '-subj', '/C=XY/L=Castle Anthrax/O=Python Software Foundation CA/CN=our-ca-server']
             check_call(['openssl'] + args)
diff --git a/Lib/test/pycacert.pem b/Lib/test/pycacert.pem
index 850fa32aef7..73150c960f3 100644
--- a/Lib/test/pycacert.pem
+++ b/Lib/test/pycacert.pem
@@ -2,78 +2,98 @@ Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number:
-            82:ed:bf:41:c8:80:91:9b
-    Signature Algorithm: sha1WithRSAEncryption
+            cb:2d:80:99:5a:69:52:5b
+    Signature Algorithm: sha256WithRSAEncryption
         Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
         Validity
-            Not Before: Jan 19 19:09:06 2018 GMT
-            Not After : Jan 17 19:09:06 2028 GMT
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Aug 26 14:23:16 2028 GMT
         Subject: C=XY, O=Python Software Foundation CA, CN=our-ca-server
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
-                Public-Key: (2048 bit)
+                Public-Key: (3072 bit)
                 Modulus:
-                    00:c3:18:69:6b:c9:47:29:98:8e:b1:56:c2:2e:fa:
-                    0e:5e:bc:23:80:b3:07:62:24:d2:42:5b:f1:4a:bf:
-                    a9:c8:21:75:c8:e3:e6:2c:1f:87:3c:6e:7c:1b:ed:
-                    39:32:95:b7:40:b2:60:48:c3:9a:16:08:fe:6d:67:
-                    88:34:3b:77:77:70:1c:70:5a:d1:1f:5f:04:21:54:
-                    b9:0c:e3:41:85:1d:58:ee:2f:ed:f3:0e:ef:d8:23:
-                    a1:fa:73:fb:4c:28:e0:e5:e6:4d:0b:02:52:49:86:
-                    c7:be:7e:bd:e6:56:76:8b:70:8e:0a:8f:06:33:20:
-                    1d:7b:5b:aa:d0:c5:1b:ab:9b:cc:54:09:3c:bf:e4:
-                    40:66:f1:fb:d6:f7:16:9d:c4:19:d4:c3:f2:ff:07:
-                    bc:6f:5a:9e:25:1b:02:4a:a5:ec:42:96:3a:70:d2:
-                    6c:99:2b:ce:be:e8:d2:01:ef:d5:ba:b0:cf:94:3e:
-                    82:d0:01:d6:4b:71:80:03:0a:12:45:86:79:81:d8:
-                    4b:d2:e8:b5:b7:2c:6c:9a:4c:8a:10:10:e4:e4:f5:
-                    df:ce:84:91:ca:d1:46:e0:84:73:17:66:db:69:43:
-                    78:80:83:be:14:4d:f1:3e:1a:d6:6c:f5:de:45:f3:
-                    39:af:91:d5:3d:54:44:bf:41:cc:73:68:1a:fc:24:
-                    db:91
+                    00:97:ed:55:41:ba:36:17:95:db:71:1c:d3:e1:61:
+                    ac:58:73:e3:c6:96:cf:2b:1f:b8:08:f5:9d:4b:4b:
+                    c7:30:f6:b8:0b:b3:52:72:a0:bb:c9:4d:3b:8e:df:
+                    22:8e:01:57:81:c9:92:73:cc:00:c6:ec:70:b0:3a:
+                    17:40:c1:df:f2:8c:36:4c:c4:a7:81:e7:b6:24:68:
+                    e2:a0:7e:35:07:2f:a0:5b:f9:45:46:f7:1e:f0:46:
+                    11:fe:ca:1a:3c:50:f1:26:a9:5f:9c:22:9c:f8:41:
+                    e1:df:4f:12:95:19:2f:5c:90:01:17:6e:7e:3e:7d:
+                    cf:e9:09:af:25:f8:f8:42:77:2d:6d:5f:36:f2:78:
+                    1e:7d:4a:87:68:63:6c:06:71:1b:8d:fa:25:fe:d4:
+                    d3:f5:a5:17:b1:ef:ea:17:cb:54:c8:27:99:80:cb:
+                    3c:45:f1:2c:52:1c:dd:1f:51:45:20:50:1e:5e:ab:
+                    57:73:1b:41:78:96:de:84:a4:7a:dd:8f:30:85:36:
+                    58:79:76:a0:d2:61:c8:1b:a9:94:99:63:c6:ee:f8:
+                    14:bf:b4:52:56:31:97:fa:eb:ac:53:9e:95:ce:4c:
+                    c4:5a:4a:b7:ca:03:27:5b:35:57:ce:02:dc:ec:ca:
+                    69:f8:8a:5a:39:cb:16:20:15:03:24:61:6c:f4:7a:
+                    fc:b6:48:e5:59:10:5c:49:d0:23:9f:fb:71:5e:3a:
+                    e9:68:9f:34:72:80:27:b6:3f:4c:b1:d9:db:63:7f:
+                    67:68:4a:6e:11:f8:e8:c0:f4:5a:16:39:53:0b:68:
+                    de:77:fa:45:e7:f8:91:cd:78:cd:28:94:97:71:54:
+                    fb:cf:f0:37:de:c9:26:c5:dc:1b:9e:89:6d:09:ac:
+                    c8:44:71:cb:6d:f1:97:31:d5:4c:20:33:bf:75:4a:
+                    a0:e0:dc:69:11:ed:2a:b4:64:10:11:30:8b:0e:b0:
+                    a7:10:d8:8a:c5:aa:1b:c8:26:8a:25:e7:66:9f:a5:
+                    6a:1a:2f:7c:5f:83:c6:78:4f:1f
                 Exponent: 65537 (0x10001)
         X509v3 extensions:
             X509v3 Subject Key Identifier: 
-                9A:CF:CF:6E:EB:71:3D:DB:3C:F1:AE:88:6B:56:72:03:CB:08:A7:48
+                DD:BF:CA:DA:E6:D1:34:BA:37:75:21:CA:6F:9A:08:28:F2:35:B6:48
             X509v3 Authority Key Identifier: 
-                keyid:9A:CF:CF:6E:EB:71:3D:DB:3C:F1:AE:88:6B:56:72:03:CB:08:A7:48
+                keyid:DD:BF:CA:DA:E6:D1:34:BA:37:75:21:CA:6F:9A:08:28:F2:35:B6:48
 
             X509v3 Basic Constraints: 
                 CA:TRUE
-    Signature Algorithm: sha1WithRSAEncryption
-         10:25:c8:dc:0c:55:5c:cb:83:6e:79:ef:77:ec:0d:8e:0c:06:
-         c1:4b:0c:d6:f7:75:52:21:b8:17:4a:38:88:9d:b3:78:c4:42:
-         fb:b8:7c:14:38:10:fb:ac:da:11:00:5b:42:87:5e:45:9f:6d:
-         4e:42:a4:9a:18:06:39:0f:45:a6:96:89:32:d6:59:b3:d3:8e:
-         e3:95:b6:c4:a2:4b:74:2f:67:c1:fb:bb:f9:72:6f:37:4a:e7:
-         f4:48:33:71:df:b8:f5:e6:41:3f:d5:d5:2f:26:09:f8:0e:92:
-         ff:70:ea:f6:ab:58:fb:90:04:d6:43:2e:8f:b1:fb:06:ab:69:
-         d0:dc:a8:f8:5b:07:f2:d4:66:1f:63:f8:5d:c1:9e:41:44:bb:
-         c9:e8:7d:e0:46:e4:a7:c8:32:5f:31:62:e5:1c:5c:89:dd:b7:
-         a2:4f:9e:0d:13:b8:5f:b1:84:53:4c:1f:ce:19:e1:01:00:5e:
-         bf:41:55:94:a9:a5:13:db:f2:59:f3:d6:4e:b9:9d:9d:b9:0a:
-         d9:b2:18:6d:7c:b1:f7:96:aa:bd:f6:f9:95:0f:4a:6e:3c:7c:
-         46:5b:df:d4:78:ec:9a:dc:e2:e3:01:e6:88:77:39:93:9c:ba:
-         2a:63:f9:25:4b:4f:ac:08:79:39:c6:7b:df:07:35:ba:c0:c2:
-         50:bf:5a:81
+    Signature Algorithm: sha256WithRSAEncryption
+         33:6a:54:d3:6b:c0:d7:01:5f:9d:f4:05:c1:93:66:90:50:d0:
+         b7:18:e9:b0:1e:4a:a0:b6:da:76:93:af:84:db:ad:15:54:31:
+         15:13:e4:de:7e:4e:0c:d5:09:1c:34:35:b6:e5:4c:d6:6f:65:
+         7d:32:5f:eb:fc:a9:6b:07:f7:49:82:e5:81:7e:07:80:9a:63:
+         f8:2c:c3:40:bc:8f:d4:2a:da:3e:d1:ee:08:b7:4d:a7:84:ca:
+         f4:3f:a1:98:45:be:b1:05:69:e7:df:d7:99:ab:1b:ee:8b:30:
+         cc:f7:fc:e7:d4:0b:17:ae:97:bf:e4:7b:fd:0f:a7:b4:85:79:
+         e3:59:e2:16:87:bf:1f:29:45:2c:23:93:76:be:c0:87:1d:de:
+         ec:2b:42:6a:e5:bb:c8:f4:0a:4a:08:0a:8c:5c:d8:7d:4d:d1:
+         b8:bf:d5:f7:29:ed:92:d1:94:04:e8:35:06:57:7f:2c:23:97:
+         87:a5:35:8d:26:d3:1a:47:f2:16:d7:d9:c6:d4:1f:23:43:d3:
+         26:99:39:ca:20:f4:71:23:6f:0c:4a:76:76:f7:76:1f:b3:fe:
+         bf:47:b0:fc:2a:56:81:e1:d2:dd:ee:08:d8:f4:ff:5a:dc:25:
+         61:8a:91:02:b9:86:1c:f2:50:73:76:25:35:fc:b6:25:26:15:
+         cb:eb:c4:2b:61:0c:1c:e7:ee:2f:17:9b:ec:f0:d4:a1:84:e7:
+         d2:af:de:e4:1b:24:14:a7:01:87:e3:ab:29:58:46:a0:d9:c0:
+         0a:e0:8d:d7:59:d3:1b:f8:54:20:3e:78:a5:a5:c8:4f:8b:03:
+         c4:96:9f:ec:fb:47:cf:76:2d:8d:65:34:27:bf:fa:ae:01:05:
+         8a:f3:92:0a:dd:89:6c:97:a1:c7:e7:60:51:e7:ac:eb:4b:7d:
+         2c:b8:65:c9:fe:5d:6a:48:55:8e:e4:c7:f9:6a:40:e1:b8:64:
+         45:e9:b5:59:29:a5:5f:cf:7d:58:7d:64:79:e5:a4:09:ac:1e:
+         76:65:3d:94:c4:68
 -----BEGIN CERTIFICATE-----
-MIIDbTCCAlWgAwIBAgIJAILtv0HIgJGbMA0GCSqGSIb3DQEBBQUAME0xCzAJBgNV
+MIIEbTCCAtWgAwIBAgIJAMstgJlaaVJbMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
 BAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUgRm91bmRhdGlvbiBDQTEW
-MBQGA1UEAwwNb3VyLWNhLXNlcnZlcjAeFw0xODAxMTkxOTA5MDZaFw0yODAxMTcx
-OTA5MDZaME0xCzAJBgNVBAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUg
-Rm91bmRhdGlvbiBDQTEWMBQGA1UEAwwNb3VyLWNhLXNlcnZlcjCCASIwDQYJKoZI
-hvcNAQEBBQADggEPADCCAQoCggEBAMMYaWvJRymYjrFWwi76Dl68I4CzB2Ik0kJb
-8Uq/qcghdcjj5iwfhzxufBvtOTKVt0CyYEjDmhYI/m1niDQ7d3dwHHBa0R9fBCFU
-uQzjQYUdWO4v7fMO79gjofpz+0wo4OXmTQsCUkmGx75+veZWdotwjgqPBjMgHXtb
-qtDFG6ubzFQJPL/kQGbx+9b3Fp3EGdTD8v8HvG9aniUbAkql7EKWOnDSbJkrzr7o
-0gHv1bqwz5Q+gtAB1ktxgAMKEkWGeYHYS9LotbcsbJpMihAQ5OT1386EkcrRRuCE
-cxdm22lDeICDvhRN8T4a1mz13kXzOa+R1T1URL9BzHNoGvwk25ECAwEAAaNQME4w
-HQYDVR0OBBYEFJrPz27rcT3bPPGuiGtWcgPLCKdIMB8GA1UdIwQYMBaAFJrPz27r
-cT3bPPGuiGtWcgPLCKdIMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEFBQADggEB
-ABAlyNwMVVzLg25573fsDY4MBsFLDNb3dVIhuBdKOIids3jEQvu4fBQ4EPus2hEA
-W0KHXkWfbU5CpJoYBjkPRaaWiTLWWbPTjuOVtsSiS3QvZ8H7u/lybzdK5/RIM3Hf
-uPXmQT/V1S8mCfgOkv9w6varWPuQBNZDLo+x+waradDcqPhbB/LUZh9j+F3BnkFE
-u8nofeBG5KfIMl8xYuUcXIndt6JPng0TuF+xhFNMH84Z4QEAXr9BVZSppRPb8lnz
-1k65nZ25CtmyGG18sfeWqr32+ZUPSm48fEZb39R47Jrc4uMB5oh3OZOcuipj+SVL
-T6wIeTnGe98HNbrAwlC/WoE=
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++8/wN97JJsXcG56JbQmsyERxy23xlzHVTCAzv3VKoODcaRHtKrRkEBEwiw6wpxDY
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+kFDQtxjpsB5KoLbadpOvhNutFVQxFRPk3n5ODNUJHDQ1tuVM1m9lfTJf6/ypawf3
+SYLlgX4HgJpj+CzDQLyP1CraPtHuCLdNp4TK9D+hmEW+sQVp59/Xmasb7oswzPf8
+59QLF66Xv+R7/Q+ntIV541niFoe/HylFLCOTdr7Ahx3e7CtCauW7yPQKSggKjFzY
+fU3RuL/V9yntktGUBOg1Bld/LCOXh6U1jSbTGkfyFtfZxtQfI0PTJpk5yiD0cSNv
+DEp2dvd2H7P+v0ew/CpWgeHS3e4I2PT/WtwlYYqRArmGHPJQc3YlNfy2JSYVy+vE
+K2EMHOfuLxeb7PDUoYTn0q/e5BskFKcBh+OrKVhGoNnACuCN11nTG/hUID54paXI
+T4sDxJaf7PtHz3YtjWU0J7/6rgEFivOSCt2JbJehx+dgUees60t9LLhlyf5dakhV
+juTH+WpA4bhkRem1WSmlX899WH1keeWkCawedmU9lMRo
 -----END CERTIFICATE-----
diff --git a/Lib/test/pycakey.pem b/Lib/test/pycakey.pem
index 16b75879d09..c283f890986 100644
--- a/Lib/test/pycakey.pem
+++ b/Lib/test/pycakey.pem
@@ -1,28 +1,40 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDDGGlryUcpmI6x
-VsIu+g5evCOAswdiJNJCW/FKv6nIIXXI4+YsH4c8bnwb7TkylbdAsmBIw5oWCP5t
-Z4g0O3d3cBxwWtEfXwQhVLkM40GFHVjuL+3zDu/YI6H6c/tMKODl5k0LAlJJhse+
-fr3mVnaLcI4KjwYzIB17W6rQxRurm8xUCTy/5EBm8fvW9xadxBnUw/L/B7xvWp4l
-GwJKpexCljpw0myZK86+6NIB79W6sM+UPoLQAdZLcYADChJFhnmB2EvS6LW3LGya
-TIoQEOTk9d/OhJHK0UbghHMXZttpQ3iAg74UTfE+GtZs9d5F8zmvkdU9VES/Qcxz
-aBr8JNuRAgMBAAECggEAZHgv4hg3k45C/cSmH7caq2LMDb0kskAwH4hlzI7DipLg
-q2Hh6Rsbc92aAG+8IvbC9ohl2VMSCQL8s667j9qH/XQ40QuT4kn2QIv2+FIYLcsd
-Pxxjt+YbUf2XrvkHkwMCPqLJTkAVzFOijdGLThF83vZJz9oz4SRKyno8j2LSix68
-WEfnjdyWqYb0eS0luKrLHw+IL7bD5vfc/P0q6u31zJ9h8zEyN5EBCj5OxM/hD0VO
-nObrp6r9Bs+xx+yRx+8J5Db6LPXggl5nBqsqrDKVDe6uTysYVgstqkfaDv1L78Vu
-3BNdKPAdJ+ucPJrQufzFHBDIIN+Xwckf/09gdQagGQKBgQDnvFaOjZfqc6wL/kNK
-tszQtedbdwP20L+EWdNEVsVWK1TOw36Pmkrp2AYLXMd7W1QQu0KukM89EFb84wKo
-s4C9V/ch162mUhEAveaLioi7bMwMPIib2V6pHmYGG8nQVRvgkZVYx6ZtPEvWye1v
-wmCzzxxK0gC6PQGxp8MSv9yXDwKBgQDXhe57ufc52pgJ+Agyl4PLkllIbG2DKQHG
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-jOSPclypgV2X6dDOwDkd2Tgh
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 -----END PRIVATE KEY-----
diff --git a/Lib/test/revocation.crl b/Lib/test/revocation.crl
index 53cb4b3721d..c05461ca7f9 100644
--- a/Lib/test/revocation.crl
+++ b/Lib/test/revocation.crl
@@ -1,11 +1,14 @@
 -----BEGIN X509 CRL-----
-MIIBpjCBjwIBATANBgkqhkiG9w0BAQUFADBNMQswCQYDVQQGEwJYWTEmMCQGA1UE
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 -----END X509 CRL-----
diff --git a/Lib/test/ssl_cert.pem b/Lib/test/ssl_cert.pem
index b1dd3f387f7..de596717bd8 100644
--- a/Lib/test/ssl_cert.pem
+++ b/Lib/test/ssl_cert.pem
@@ -1,20 +1,26 @@
 -----BEGIN CERTIFICATE-----
-MIIDWTCCAkGgAwIBAgIJAPm6B21bar2bMA0GCSqGSIb3DQEBCwUAMF8xCzAJBgNV
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+HcVKQHyOeyvnINuBAQ==
 -----END CERTIFICATE-----
diff --git a/Lib/test/ssl_key.passwd.pem b/Lib/test/ssl_key.passwd.pem
index 669c7ce3c81..e4f1370ab27 100644
--- a/Lib/test/ssl_key.passwd.pem
+++ b/Lib/test/ssl_key.passwd.pem
@@ -1,30 +1,42 @@
 -----BEGIN RSA PRIVATE KEY-----
 Proc-Type: 4,ENCRYPTED
-DEK-Info: DES-EDE3-CBC,2D5DD30B9D440DBB
+DEK-Info: DES-EDE3-CBC,8064BE1494B24B13
 
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 -----END RSA PRIVATE KEY-----
diff --git a/Lib/test/ssl_key.pem b/Lib/test/ssl_key.pem
index b63f38bc5cf..1ea4578d81e 100644
--- a/Lib/test/ssl_key.pem
+++ b/Lib/test/ssl_key.pem
@@ -1,28 +1,40 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCr77F9oBLYuLIb
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 -----END PRIVATE KEY-----
diff --git a/Lib/test/test_asyncio/utils.py b/Lib/test/test_asyncio/utils.py
index 5362591b5d7..e7438d40a44 100644
--- a/Lib/test/test_asyncio/utils.py
+++ b/Lib/test/test_asyncio/utils.py
@@ -57,9 +57,9 @@ PEERCERT = {
     'issuer': ((('countryName', 'XY'),),
             (('organizationName', 'Python Software Foundation CA'),),
             (('commonName', 'our-ca-server'),)),
-    'notAfter': 'Nov 28 19:09:06 2027 GMT',
-    'notBefore': 'Jan 19 19:09:06 2018 GMT',
-    'serialNumber': '82EDBF41C880919C',
+    'notAfter': 'Jul  7 14:23:16 2028 GMT',
+    'notBefore': 'Aug 29 14:23:16 2018 GMT',
+    'serialNumber': 'CB2D80995A69525C',
     'subject': ((('countryName', 'XY'),),
              (('localityName', 'Castle Anthrax'),),
              (('organizationName', 'Python Software Foundation'),),
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 5c22630d190..49a4d729542 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -61,9 +61,9 @@ CERTFILE_INFO = {
                (('localityName', 'Castle Anthrax'),),
                (('organizationName', 'Python Software Foundation'),),
                (('commonName', 'localhost'),)),
-    'notAfter': 'Jan 17 19:09:06 2028 GMT',
-    'notBefore': 'Jan 19 19:09:06 2018 GMT',
-    'serialNumber': 'F9BA076D5B6ABD9B',
+    'notAfter': 'Aug 26 14:23:15 2028 GMT',
+    'notBefore': 'Aug 29 14:23:15 2018 GMT',
+    'serialNumber': '98A7CF88C74A32ED',
     'subject': ((('countryName', 'XY'),),
              (('localityName', 'Castle Anthrax'),),
              (('organizationName', 'Python Software Foundation'),),
@@ -86,9 +86,9 @@ SIGNED_CERTFILE_INFO = {
     'issuer': ((('countryName', 'XY'),),
             (('organizationName', 'Python Software Foundation CA'),),
             (('commonName', 'our-ca-server'),)),
-    'notAfter': 'Nov 28 19:09:06 2027 GMT',
-    'notBefore': 'Jan 19 19:09:06 2018 GMT',
-    'serialNumber': '82EDBF41C880919C',
+    'notAfter': 'Jul  7 14:23:16 2028 GMT',
+    'notBefore': 'Aug 29 14:23:16 2018 GMT',
+    'serialNumber': 'CB2D80995A69525C',
     'subject': ((('countryName', 'XY'),),
              (('localityName', 'Castle Anthrax'),),
              (('organizationName', 'Python Software Foundation'),),
@@ -334,6 +334,8 @@ class BasicSocketTests(unittest.TestCase):
 
             self.assertNotEqual(child_random, parent_random)
 
+    maxDiff = None
+
     def test_parse_cert(self):
         # note that this uses an 'unofficial' function in _ssl.c,
         # provided solely for this test, to exercise the certificate
diff --git a/Misc/NEWS.d/next/Tests/2018-08-29-16-30-52.bpo-34542.9stVAW.rst b/Misc/NEWS.d/next/Tests/2018-08-29-16-30-52.bpo-34542.9stVAW.rst
new file mode 100644
index 00000000000..1ca3c7d7996
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2018-08-29-16-30-52.bpo-34542.9stVAW.rst
@@ -0,0 +1 @@
+Use 3072 RSA keys and SHA-256 signature for test certs and keys.