Add regex and tests for PEM formatted private key (#179)

The regex will match private key generated by ssh-keygen and those
defined by OpenSSL header file. The regex, however, doesn't validate if
the string within BEGIN and END label is "correct" Base64 encoded. As it
can be validated be direct checking with the public key

Resolves: #174

pywhat/Data/regex.json

@@ -34,6 +34,18 @@
          "SSH Public Key"
       ]
    },
+   {
+	   "Name": "PEM-formatted Private Key",
+	   "Regex": "^(-----BEGIN( ANY| RSA| DSA| ENCRYPTED| EC| OPENSSH)? PRIVATE KEY-----\\n?[a-zA-Z0-9\\/\\.\\n\\:\\+\\=]+-----END( ANY| RSA| DSA| ENCRYPTED| EC| OPENSSH)? PRIVATE KEY-----)$",
+	   "plural_name": false,
+	   "Description": null,
+	   "Rarity": 1,
+	   "URL": null,
+	   "Tags": [
+		   "Credentials",
+		   "Bug Bounty"
+	   ]
+   },
    {
       "Name": "SSH ECDSA Public Key",
       "Regex": "^(ecdsa-sha2-nistp[0-9]{3} [A-Za-z0-9+\\/=]+ [^ \\n]+)$",

tests/test_regex_identifier.py

@@ -576,6 +576,61 @@ def test_ssh_rsa_key():
     _assert_match_first_item("SSH RSA Public Key", res)
 
 
+def test_pem_rsa_private_key():
+    # key size: 2048 bit
+    res = r.check(
+        [
+            "-----BEGIN RSA PRIVATE KEY-----MIIEoQIBAAKCAQBYNGcp1Jm7GOGffs9wvpIsi9RKPE/a4usQyEdf8G2C0pLcOoypfG1MiOQCDDRN4HtMDoe9KTVjVnnREfmQq2k1hT1BZHfaRu/3YvpFrleozzYmY1XRSeUiM6G71ADg8cPZlAuH1RjswlevJyhNVWzy+DLumpbRgv6nKR9dYSdy2GsFySX488l05+ZaVKgHwlGeKd33YNPRAUNLSPKLdd9wi1djGaQpSo7jWRb6lIFJUR7FdvxwjAVMhDljxXYHPP0GXFS6KTGcfB97dle90qu/4nwdKWd4RZ5pqIbFi1D5ejItUzY40GpsPuN/tkamwB5jY0AtFY8S9TMxHjRx05/DAgMBAAECggEAKU5pHYLNd3wAdTPqq27jf28APL+f2e64jIRuQHSUpFY+plnY86oseVIGDRtwByRgOU74rFI3CU0/APS8/c34GDNMa2pEYnkj+aNldupdbNWVE0cjsj47yteJHy/6NV2jDSqyd6sI4B9m9sSMsCKYQfSPzYOhq34ACYJNiOptke9PkxpNNODlFJrFQsRKKpv2KdF7Lh3/Yzc6p53gilYR9U+Sn4mBrkuURLm2Qq++r0CNTjpmbunbjAL5q/oK8bpJEz3uZqbSQ5GbSLCNroRyi7eIF1Evvk0Vb9nSyfm94VdP+yVr1VvtOt8WigHwAr8E+ujg0rrAKMswfbvNFroNMQKBgQCs/rQvlTfpRiHUlCB09HZzquM8o7pBxTpKAX9247SW81V41EHsIS69WGZzcYbYQlxOxQi7gHiALB/yRLFNiAHAhODFMGTYtprTdW/JK6TC8CPvK3TBnPSYDPP/ME2F2UZKVHWlD3FFtUqp9BppWCHDLp7N/+i5eJy+ankJYzeGywKBgQCChsDhaPJAnHp/zHJmhDXQkqVeoB8SW2WzH481xVgyu2gIsEGmgActfEAyCqRuzjnMSIjXBL5LSAZXft8d+wveR3PsUiVdUurbcrije1ku3jDPXdBQrjmyWZvCXXnZ8oqX18C05a0pgzX5oDluA1ShcI7uWNHkIPYcZskcp96z6QKBgG9gpP2lopOrtYg5vhPOeJzLvvWBrB9ALeELydbvj4tIKxVaAv9V9dOuIHfe9aQyRV/pd0/QzMQopIDEPSrfj9E1O8l4+NSV7GSMTWZFlRR0q44GemtU9B0Y6da4cJDmbFzat8uHf7QTnniBUqfUOBiD4XZbdqhCwRfPURH8MPm1AoGAWHZ9yQe4kAO9nlnw+vwGAQsymxRImsdpAOKVy+qpIREUrDbQ98hzlOdOFtxRn2uTjplmbNwhIKJ68dfh3c7kt0yUC4mNG1f0JrD05I/X3MToLdK2OcgrAG5s+2khCY6xUcH/MFstZiIwdbOa2K3XMOc5Z964ujWAt7UN/qbjb+kCgYBdPN6J1b6OuTt4xYTCenX+KlGBb9QsuK8uXMDkhJhrtcHAyuxyJrDjQu5i3djeZerflT0EESCet0zGPd5bGyP4KaIsmLwYheDLrziS6xqqXL0irMZiWVaVquC3JlWJMw6/Y66WRuxd+oRBbE62lHWnzT2J8dfG+su483KKgli02Q==-----END RSA PRIVATE KEY-----"
+        ]
+    )
+    _assert_match_first_item("PEM-formatted Private Key", res)
+
+
+def test_pem_dsa_private_key():
+    res = r.check(
+        [
+            "-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----"
+        ]
+    )
+    _assert_match_first_item("PEM-formatted Private Key", res)
+
+
+def test_pem_ecdsa_private_key():
+    res = r.check(
+        [
+            "-----BEGIN EC PRIVATE KEY-----MIHcAgEBBEIApe6jUvbal/QN6ZoQ9dZMe/pTx4CiFzd4ln9a5f0Ope+788+BwgLpl1888OThkaWMeg2wevZ/ErMId0T3kZGoE7mgBwYFK4EEACOhgYkDgYYABAE4SLWZJs6lE0bwYgMipcRxB1xtARXDwbPt3o7aDI7680kLnELXGYhIhGeXlhXgAXjE66GuM8TdbPsshqP9nRy9OAGbxJU/OA+7/zuZmo10IYWNu1IrcGYq0WZJwzZex+S12+VKVBEwPoLKlgm5r/sI8x7WnDtialy5i8ipkvUyOyPUxg==-----END EC PRIVATE KEY-----"
+        ]
+    )
+    _assert_match_in_items("PEM-formatted Private Key", res)
+
+
+def test_pem_openssl_pkcs8_private_key():
+    res = r.check(
+        [
+            "-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----"
+        ]
+    )
+    _assert_match_first_item("PEM-formatted Private Key", res)
+
+
+def test_pem_openssl_pkcs8_encrypted_private_key():
+    res = r.check(
+        [
+            "-----BEGIN ENCRYPTED PRIVATE KEY-----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-----END ENCRYPTED PRIVATE KEY-----"
+        ]
+    )
+    _assert_match_first_item("PEM-formatted Private Key", res)
+
+
+def test_pem_openssh_private_key():
+    res = r.check(
+        [
+            "-----BEGIN OPENSSH PRIVATE KEY-----b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABBDXVWIoOcQYPyoVODqYrhNAAAAEAAAAAEAAAAzAAAAC3NzaC1lZDI1NTE5AAAAIDDZHhPJKYsu2hV7bq/vtAbF2Guw8cupqcjv5SqRraVaAAAAoCfV/ZrS3mggJFx1X7aeKzfBFDN2hWrPTHmyJPsw0NaDW+wzL6/yYmWaAB90clbSiCQ7jALlA/RoU/tPz8HvEaKcnj9BgSMN8+Se4RBcfqxMx9eCRYtYcumc9PrQbKSCeywtvsQoCntPxLhyudxH/HYKx7lO5mrMGut9FjOy2s9Iz317p+2F1DJqRYNsEHKyZJpV0DwObF2ZPOlX3PDv3fg=-----END OPENSSH PRIVATE KEY-----"
+        ]
+    )
+    _assert_match_first_item("PEM-formatted Private Key", res)
+
+
 def test_ssh_ecdsa_key():
     res = r.check(
         [