Instructions/Info
How to run it

Paste a PEM-encoded Certificate or Certificate chain into the input box and click Show Cert.

Encoded Certificates look like: -----BEGIN CERTIFICATE----- MIID8TCCAtmgAwIBAgIJAMq1FspnfG8FMA0GCSqGSIb3DQEBCwUAMIGOMQswCQYD VQQGEwJVUzENMAsGA1UECAwET2hpbzETMBEGA1UEBwwKQ2luY2lubmF0aTEfMB0G A1UECgwWeW91ciBjb21wYW55IG5hbWUgaGVyZTEXMBUGA1UEAwwOeW91cmRvbWFp bi5jb20xITAfBgkqhkiG9w0BCQEWEnlvdUB5b3VyZG9tYWluLmNvbTAeFw0xNzAz MTExMzQxMDJaFw0xNzA0MTAxMzQxMDJaMIGOMQswCQYDVQQGEwJVUzENMAsGA1UE CAwET2hpbzETMBEGA1UEBwwKQ2luY2lubmF0aTEfMB0GA1UECgwWeW91ciBjb21w YW55IG5hbWUgaGVyZTEXMBUGA1UEAwwOeW91cmRvbWFpbi5jb20xITAfBgkqhkiG 9w0BCQEWEnlvdUB5b3VyZG9tYWluLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEP ADCCAQoCggEBAMfgSSZy4YuWACrWe/P6XLexCuSmgC0U8WRoTPQH297Ce2LhBhva Loq9LGLSg0unrKp3fR+Spzn/yRUwVKgOGZEIHN1x6lS2sY2JpPbkBpn7CYbwD8JI ijmLR8O8pj8xqVHNKv+R9PRDYb5Q3Y7tCdQhbcGZ7a8hvH3Ltqg4Qw3QMZAHXWRR NuZ0/GvT/GGmFy6PQv+VjYL8A6rd8HZdocZ3cvG9y9sJmeTv4/xh8QzNF47/dSEm o5EA0th/LlHzQShcBpcVL/ou+GijhjqDzQCj5Jrr/TD8O7s0ZMdvRvubskdAff/v v+ASRYYGod+3ICrEoz5lPpmbamIWzqfMr8cCAwEAAaNQME4wHQYDVR0OBBYEFLzU kTinR+iwJKW/gFjayuR00rx+MB8GA1UdIwQYMBaAFLzUkTinR+iwJKW/gFjayuR0 0rx+MAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBAH3G1zeL8benyOr8 +rWnynq6+k0JKq5n7gxg/Rn1G7ox/YVOPuBm44Zhb9iEOCSvER2GcNn+7WhTJTYP G3ZuvLmyUNkqpK9Mfv1451HvVAXzMrpa3UUbk7yvZBQyaqu0B04nR+2pFcZl8usp 5Au+jsJZ3SzstI09VwEv12mSsevBicMMchy3z5BKEuAX01fQouuDnrWRnYW1xg7X JmS5CtYwGL+NYkz913C2UnogvlJQrFsr5S+FLjhlBJSo356V0vrPKqwPBveTuZL2 n6IJ2CZoq1Z7G7a49H79sO693KKy4KK5BTXavRXk6BfUgc/nRgFH7ZQbTAftrcMZ 5u0HHaI= -----END CERTIFICATE-----

What it shows

ShowCert displays the contents of the Certificate you entered, for example: Certificate: Data: Version: 3 (0x2) Serial Number: 14606606025021484805 (0xcab516ca677c6f05) Signature Algorithm: sha256WithRSAEncryption Issuer: countryName = US stateOrProvinceName = Ohio localityName = Cincinnati organizationName = your company name here commonName = yourdomain.com emailAddress = you@yourdomain.com Validity Not Before: Mar 11 13:41:02 2017 GMT Not After : Apr 10 13:41:02 2017 GMT Subject: countryName = US stateOrProvinceName = Ohio localityName = Cincinnati organizationName = your company name here commonName = yourdomain.com emailAddress = you@yourdomain.com

Input Fields
ShowCert parameter entry
Test Results

Contents:

Certificate: Data: Version: 3 (0x2) Serial Number: 0 (0x0) Signature Algorithm: sha1WithRSAEncryption Issuer: countryName = US organizationName = The Go Daddy Group, Inc. organizationalUnitName = Go Daddy Class 2 Certification Authority Validity Not Before: Jun 29 17:06:20 2004 GMT Not After : Jun 29 17:06:20 2034 GMT Subject: countryName = US organizationName = The Go Daddy Group, Inc. organizationalUnitName = Go Daddy Class 2 Certification Authority Subject Public Key Info: Public Key Algorithm: rsaEncryption RSA Public-Key: (2048 bit) Modulus: 00:de:9d:d7:ea:57:18:49:a1:5b:eb:d7:5f:48:86: ea:be:dd:ff:e4:ef:67:1c:f4:65:68:b3:57:71:a0: 5e:77:bb:ed:9b:49:e9:70:80:3d:56:18:63:08:6f: da:f2:cc:d0:3f:7f:02:54:22:54:10:d8:b2:81:d4: c0:75:3d:4b:7f:c7:77:c3:3e:78:ab:1a:03:b5:20: 6b:2f:6a:2b:b1:c5:88:7e:c4:bb:1e:b0:c1:d8:45: 27:6f:aa:37:58:f7:87:26:d7:d8:2d:f6:a9:17:b7: 1f:72:36:4e:a6:17:3f:65:98:92:db:2a:6e:5d:a2: fe:88:e0:0b:de:7f:e5:8d:15:e1:eb:cb:3a:d5:e2: 12:a2:13:2d:d8:8e:af:5f:12:3d:a0:08:05:08:b6: 5c:a5:65:38:04:45:99:1e:a3:60:60:74:c5:41:a5: 72:62:1b:62:c5:1f:6f:5f:1a:42:be:02:51:65:a8: ae:23:18:6a:fc:78:03:a9:4d:7f:80:c3:fa:ab:5a: fc:a1:40:a4:ca:19:16:fe:b2:c8:ef:5e:73:0d:ee: 77:bd:9a:f6:79:98:bc:b1:07:67:a2:15:0d:dd:a0: 58:c6:44:7b:0a:3e:62:28:5f:ba:41:07:53:58:cf: 11:7e:38:74:c5:f8:ff:b5:69:90:8f:84:74:ea:97: 1b:af Exponent: 3 (0x3) X509v3 extensions: X509v3 Subject Key Identifier: D2:C4:B0:D2:91:D4:4C:11:71:B3:61:CB:3D:A1:FE:DD:A8:6A:D4:E3 X509v3 Authority Key Identifier: keyid:D2:C4:B0:D2:91:D4:4C:11:71:B3:61:CB:3D:A1:FE:DD:A8:6A:D4:E3 DirName:/C=US/O=The Go Daddy Group, Inc./OU=Go Daddy Class 2 Certification Authority serial:00 X509v3 Basic Constraints: CA:TRUE Signature Algorithm: sha1WithRSAEncryption 32:4b:f3:b2:ca:3e:91:fc:12:c6:a1:07:8c:8e:77:a0:33:06: 14:5c:90:1e:18:f7:08:a6:3d:0a:19:f9:87:80:11:6e:69:e4: 96:17:30:ff:34:91:63:72:38:ee:cc:1c:01:a3:1d:94:28:a4: 31:f6:7a:c4:54:d7:f6:e5:31:58:03:a2:cc:ce:62:db:94:45: 73:b5:bf:45:c9:24:b5:d5:82:02:ad:23:79:69:8d:b8:b6:4d: ce:cf:4c:ca:33:23:e8:1c:88:aa:9d:8b:41:6e:16:c9:20:e5: 89:9e:cd:3b:da:70:f7:7e:99:26:20:14:54:25:ab:6e:73:85: e6:9b:21:9d:0a:6c:82:0e:a8:f8:c2:0c:fa:10:1e:6c:96:ef: 87:0d:c4:0f:61:8b:ad:ee:83:2b:95:f8:8e:92:84:72:39:eb: 20:ea:83:ed:83:cd:97:6e:08:bc:eb:4e:26:b6:73:2b:e4:d3: f6:4c:fe:26:71:e2:61:11:74:4a:ff:57:1a:87:0f:75:48:2e: cf:51:69:17:a0:02:12:61:95:d5:d1:40:b2:10:4c:ee:c4:ac: 10:43:a6:a5:9e:0a:d5:95:62:9a:0d:cf:88:82:c5:32:0c:e4: 2b:9f:45:e6:0d:9f:28:9c:b1:b9:2a:5a:57:ad:37:0f:af:1d: 7f:db:bd:9f