Add License and Readme

LICENSE.md

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+MIT License
+
+Copyright (c) 2018 cytopia
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# ca-gen
+
+Easily create your CA and self-signed certificates.
+
+## Available Tools
+
+* [ca-gen](bin/ca-gen)
+* [cert-gen](bin/cert-gen)
+
+
+## Create CA
+
+#### Usage
+```bash
+USAGE: ca-gen -n CN [-kdcslouev] <keyfile> <crtfile>
+       ca-gen --help
+       ca-gen --version
+
+Required arguments
+  -n CN       Common Name
+
+Optional arguments
+  -k int      Key size in bits
+  -d int      Validity in days
+  -c C        Subject two letter country name (C)
+  -s ST       Subject state name (ST)
+  -l L        Subject location (L)
+  -o O        Subject organization (O)
+  -u OU       Subject organizational unit (OU)
+  -e Email    Subject email (emailAddress)
+  -v          Verbose output
+
+Required parameter
+  <keyfile>   Path to output key file
+  <crtfile>   Path to output cert file
+```
+
+#### Devilbox example
+```bash
+$ ca-gen -v -c DE -s Berlin -l Berlin -o Devilbox -u Devilbox -n devilbox.org \
+       -e [email protected] devilbox-rootCA.key devilbox-rootCA.crt
+```
+
+#### Example output
+```bash
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            e3:a1:c0:ad:66:e3:9f:ae
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C = DE, ST = Berlin, L = Berlin, O = Devilbox, OU = Devilbox, CN = devilbox.org, emailAddress = [email protected], dnQualifier = "1A8KSvbo+y7FW1H3dMZWUENkeec="
+        Validity
+            Not Before: May  1 09:22:09 2018 GMT
+            Not After : Apr 28 09:22:09 2028 GMT
+        Subject: C = DE, ST = Berlin, L = Berlin, O = Devilbox, OU = Devilbox, CN = devilbox.org, emailAddress = [email protected], dnQualifier = "1A8KSvbo+y7FW1H3dMZWUENkeec="
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:dd:a5:c1:e1:c9:89:33:66:dc:7a:e9:42:01:32:
+                    72:29:c9:bd:bf:85:96:9d:07:9b:98:79:95:23:23:
+                    3a:a8:ed:fe:88:86:88:e4:51:fa:40:bc:4f:9a:d5:
+                    c1:45:5f:71:ec:6c:d3:dd:35:ab:1a:7d:39:4f:04:
+                    ef:ef:14:b1:c9:a1:f2:14:cf:37:ab:55:4b:ae:ad:
+                    3d:32:c0:66:d5:1f:81:f0:4f:6c:28:96:c0:98:37:
+                    7a:ca:86:a5:93:7a:0d:d5:b3:83:cd:22:0f:26:5a:
+                    19:39:35:3a:82:ad:a6:13:de:b6:62:0a:bc:57:f2:
+                    01:31:c7:3a:ce:72:02:76:e6:fc:03:9e:c1:53:63:
+                    0f:ad:b3:2b:b0:fb:7e:84:c0:f9:d3:79:d9:23:a6:
+                    55:d6:3a:a8:b5:d6:01:2e:18:fe:97:a8:2c:91:cd:
+                    93:6e:ae:61:11:cb:57:38:9b:cc:1d:c8:41:8b:fa:
+                    bc:d8:34:bb:f8:0e:57:aa:ac:d8:50:e2:46:59:88:
+                    f7:7a:85:c2:08:ef:0e:35:99:66:ab:25:f6:83:4a:
+                    4d:72:11:8b:eb:61:45:6c:3c:fd:09:8d:83:66:c9:
+                    58:97:8a:99:27:20:b9:42:a7:d4:24:11:5e:6b:9c:
+                    0f:bb:37:7b:8f:79:9a:af:d6:b9:9a:0f:9a:39:c5:
+                    fa:99
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier:
+                D4:0F:0A:4A:F6:E8:FB:2E:C5:5B:51:F7:74:C6:56:50:43:64:79:E7
+            X509v3 Authority Key Identifier:
+                keyid:D4:0F:0A:4A:F6:E8:FB:2E:C5:5B:51:F7:74:C6:56:50:43:64:79:E7
+
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+    Signature Algorithm: sha256WithRSAEncryption
+         3b:e7:b5:0f:ca:7a:74:f9:93:c2:59:45:f9:80:b1:6b:c5:22:
+         f3:93:c7:df:65:a0:f9:37:e2:d0:a6:15:56:4f:19:61:9d:e4:
+         6d:b4:88:d8:8c:40:6d:e7:63:03:89:4d:06:73:6a:c5:8b:ce:
+         3b:ab:f9:8f:c9:e7:fc:a6:13:88:ff:55:23:03:d5:17:e4:4c:
+         38:bf:bd:6c:62:f0:16:0e:3f:d9:64:83:09:f5:38:39:9b:4c:
+         64:33:c6:9c:a4:71:87:98:19:c4:44:ef:82:60:dc:13:8f:6e:
+         5e:0b:a5:22:b1:2e:26:93:cf:21:db:3b:7c:e2:9d:5c:15:db:
+         5f:ad:69:5b:66:f5:f0:55:75:b5:c2:ad:b4:56:77:af:4a:8d:
+         64:61:c1:d9:f0:4a:04:09:61:17:98:d7:1a:c5:e7:41:4e:99:
+         af:3a:86:ca:c4:63:f8:1a:55:c6:57:c1:38:40:de:7a:a8:9a:
+         7a:ba:26:39:8b:cc:57:db:a1:80:ec:ec:ed:2f:7f:5f:43:41:
+         b5:38:a2:3a:88:c8:f7:46:83:e2:2f:3b:64:af:24:a5:e1:af:
+         4d:dd:0a:02:11:21:8b:98:db:24:36:86:b1:b3:ce:57:5e:34:
+         ed:4f:0e:64:88:47:ea:f5:51:ba:a5:04:b8:b5:98:e4:4e:33:
+         c1:17:0f:0e
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+```
+
+## License
+
+[MIT License](LICENSE.md)