Fix P-521 client cert mapping and test all curves.

net/data/ssl/certificates/client_6.pem

Index: net/data/ssl/certificates/client_6.pem
diff --git a/net/data/ssl/certificates/client_6.pem b/net/data/ssl/certificates/client_6.pem
new file mode 100644
index 0000000000000000000000000000000000000000..f90a4ca81e5022a179690b329b759349dff07ce9
--- /dev/null
+++ b/net/data/ssl/certificates/client_6.pem
@@ -0,0 +1,60 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 4102 (0x1006)
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN=E CA
+        Validity
+            Not Before: Dec  9 20:18:57 2016 GMT
+            Not After : Dec  7 20:18:57 2026 GMT
+        Subject: CN=Client Cert I
+        Subject Public Key Info:
+            Public Key Algorithm: id-ecPublicKey
+                Public-Key: (521 bit)
+                pub: 
+                    04:00:ad:7f:4a:32:1e:8c:57:4e:ef:e3:a0:6e:48:
+                    d9:f4:de:79:87:ba:64:21:0a:97:3d:83:e5:c3:1c:
+                    90:5e:1b:22:48:d1:a6:e7:b5:d9:33:21:ce:ce:c5:
+                    62:9d:1c:83:e3:32:dd:bc:4e:03:ce:ed:ee:8b:3f:
+                    bd:72:77:49:9c:46:0b:00:45:21:02:5c:fe:f3:12:
+                    cf:b7:8e:95:a6:07:59:76:18:fa:fb:83:e0:06:ff:
+                    8f:7e:25:bf:55:3e:e8:b8:ed:8a:75:a8:23:65:80:
+                    6e:af:eb:c7:34:a4:bb:df:cd:9c:bb:4a:01:36:f3:
+                    dd:88:27:63:2c:c2:12:c9:b1:40:77:e2:2a
+                ASN1 OID: secp521r1
+        X509v3 extensions:
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+    Signature Algorithm: sha256WithRSAEncryption
+         8d:7b:44:61:33:92:ef:73:17:b7:b1:95:d8:f3:87:02:36:1c:
+         f7:d1:00:0d:2b:59:88:80:31:93:0b:ef:e8:c0:19:c6:bb:89:
+         26:3a:6e:47:90:0b:b2:99:d5:46:19:c4:cb:61:eb:51:6e:74:
+         f7:d0:87:4f:3b:08:fe:5a:48:a3:23:cc:b4:5d:a4:b6:0c:78:
+         f1:b2:f0:36:71:d7:c6:a7:e1:80:59:a6:67:b4:2a:ea:b5:1b:
+         9f:a2:bb:4d:01:36:e3:58:ed:19:bd:e6:b4:8e:d7:3c:b7:cc:
+         95:76:8b:e9:ec:78:c0:de:1b:09:04:d7:44:6c:2c:3c:c3:0e:
+         39:dc:be:3b:eb:ec:7d:b5:b9:3e:e6:eb:c0:ef:15:af:ca:96:
+         1d:f0:9e:ba:27:41:a2:7c:66:67:7d:37:65:0c:66:b7:aa:1b:
+         e8:88:55:f1:50:54:b9:36:e3:84:9c:27:a9:fa:8c:06:06:ce:
+         02:63:85:a6:70:dd:fc:78:1f:26:1f:13:01:aa:8d:34:54:80:
+         23:28:84:bf:90:a4:1a:61:e7:83:90:93:b7:0b:13:1d:c5:78:
+         7b:74:eb:5d:18:f1:b2:dd:6c:23:10:bc:80:1c:14:38:e6:76:
+         d5:78:b9:3a:0a:57:38:bd:fe:45:b0:68:a3:8c:1e:ae:25:84:
+         2f:dc:7a:b2
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----