apptcha.seclab.cs.ucsb.edu
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:04:14:81:56:06:92:51:d3:98:6a:d5:50:4c:b4:08:b7:5b was issued on by Let's Encrypt.
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We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=apptcha.seclab.cs.ucsb.edu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:04:14:81:56:06:92:51:d3:98:6a:d5:50:4c:b4:08:b7:5bSerial Number (int): 262725243373982821726732832294706398934875
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 60:62:4e:c4:b9:20:f0:78:85:69:9b:f8:5a:fb:42:ef:92:9d:e4:3a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): a0:54:7b:74:13:5e:a6:9b:38:79:e4:73:45:b0:c9:da:cc:c0:3f:16
Fingerprint (sha256): 01:fc:77:10:b5:40:49:84:ee:d1:04:04:86:74:f9:e2:4b:66:90:9c:e4:3d:79:64:3b:45:b8:b2:50:76:1a:6b
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate apptcha.seclab.cs.ucsb.edu
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for apptcha.seclab.cs.ucsb.edu
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
apptcha.seclab.cs.ucsb.edu
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Certificate
The complete raw certificate details for apptcha.seclab.cs.ucsb.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFbDCCBFSgAwIBAgISAwQUgVYGklHTmGrVUEy0CLdbMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMTcwNzMwMzJaFw0y MDA0MTYwNzMwMzJaMCUxIzAhBgNVBAMTGmFwcHRjaGEuc2VjbGFiLmNzLnVjc2Iu ZWR1MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs3bGS3hk7FCieG7w XlfqjTccB3tXc1uvJUJJlb+HcVi7IBtWcAqJe7eI+5uOepScnemRwpHpfa3JJ9Kb 9sgt/v/V/chuvJ6SYJkObui0lvl9nI5CTIgf4DmFVVnQscdd233HzjwMYOJZzgT/ HlHcSiokS86aw1AG0jlMWSuCEHM6hAbKIAe3MttOlocqMeRC2HCnQJ9Dm5FRg0BG eu6ege1EkJ/D78crxfLXFh2b7lofVwbnTD4k/q2CjFBhSLgOS1esoLwcudo8PTpe zNOGZMEP1MOZDWBVY6KAPhHp+SducwpYR4/zpJ3o8KEJ6CeQQ1kS87oUQXQDQdVU 8a8cdQIDAQABo4ICbzCCAmswDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsG AQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRgYk7EuSDw eIVpm/ha+0Lvkp3kOjAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBv BggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5s ZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5s ZXRzZW5jcnlwdC5vcmcvMCUGA1UdEQQeMByCGmFwcHRjaGEuc2VjbGFiLmNzLnVj c2IuZWR1MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYI KwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHW eQIEAgSB9QSB8gDwAHcA8JWkWfIA0YJAEC0vk4iOrUv+HUfjmeHQNKawqKqOsnMA AAFvsqARJwAABAMASDBGAiEAvOuHpVNXKR5XkdbkYymszwspX20QeJVZ70uC93SN 5WsCIQDTigXCj2Ziv6VoSVnMCoceEiLTUzInrEHHXWQvjyQ2WwB1ALIeBcyLos2K IE6HZvkruYolIGdr2vpw57JJUy3vi5BeAAABb7KgERcAAAQDAEYwRAIgJ9ari58n nBK7GfRI1tXJPZ5RKTCBt67/urB5uxQgJ8wCIFauXMtBCvY2/45Z6FdaUwIdZGof dQjXBayW8f+HFmC7MA0GCSqGSIb3DQEBCwUAA4IBAQBEctbS2cHQ4io9SAYknGuc 2YvJaxtfiyfCaD+yums3xzG309Vaj8/dsUpzdRMwXIF6vivW7YC3IBM8oVcaWzVv A5b4cua7u1kk0zDFzNzuRVWzAMEpt4kndoJlIkesGuRuId7NOmtct+7ll2hv1fEH +3jCJlIVn9GnbEkulXw9/+PAngSLZHDIa9RDd/L85KrU7U1jXAp3Qy0MeY1J8fNs eKJ6eepeowqHXXrX29KtcmahEVOOZGw8aZsRMzsZ+W+Rx/mGFW6Fc4lY0cRMbngG RbpA5jkz0il+8dshK0hXaoOGhBEorNjLmGHz3Micu/iFr644s68Gz/bzp12bHi8l -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs3bGS3hk7FCieG7wXlfq jTccB3tXc1uvJUJJlb+HcVi7IBtWcAqJe7eI+5uOepScnemRwpHpfa3JJ9Kb9sgt /v/V/chuvJ6SYJkObui0lvl9nI5CTIgf4DmFVVnQscdd233HzjwMYOJZzgT/HlHc SiokS86aw1AG0jlMWSuCEHM6hAbKIAe3MttOlocqMeRC2HCnQJ9Dm5FRg0BGeu6e ge1EkJ/D78crxfLXFh2b7lofVwbnTD4k/q2CjFBhSLgOS1esoLwcudo8PTpezNOG ZMEP1MOZDWBVY6KAPhHp+SducwpYR4/zpJ3o8KEJ6CeQQ1kS87oUQXQDQdVU8a8c dQIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 262725243373982821726732832294706398934875 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-17 07:30:32 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-16 07:30:32 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'apptcha.seclab.cs.ucsb.edu' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 22655226521733712918526769611228074144913160378427759548815423399045939071564830584958672115887448664096946107181097577231498898625235543894151969619466597639338461366797464812736031838524700344175314468136261028389249331261748421162111980591940187918751646626408976867202017779547825016999984327266567644518865625754639831956203545716046266738286997493790654846560496849915163908177647136195661305695158178443656809999716093460024776949860270084590701689533364074213657319429249070396499437862880965085487402476124706494218352762930365274989782119737701218558277033934915299915527207202711555704192911517964152282229 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 60624ec4b920f07885699bf85afb42ef929de43a . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (30 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'apptcha.seclab.cs.ucsb.edu' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016fb2a011270000040300483046022100bceb87a55357291e5791d6e46329accf0b295f6d10789559ef4b82f7748de56b022100d38a05c28f6662bfa5684959cc0a871e1222d3533227ac41c75d642f8f24365b007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016fb2a011170000040300463044022027d6ab8b9f279c12bb19f448d6d5c93d9e51293081b7aeffbab079bb142027cc022056ae5ccb410af636ff8e59e8575a53021d646a1f7508d705ac96f1ff871660bb . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 004472d6d2d9c1d0e22a3d4806249c6b9cd98bc96b1b5f8b27c2683fb2ba6b37c731b7d3d55a8fcfddb14a737513305c817abe2bd6ed80b720133ca1571a5b356f0396f872e6bbbb5924d330c5ccdcee4555b300c129b789277682652247ac1ae46e21decd3a6b5cb7eee597686fd5f107fb78c22652159fd1a76c492e957c3dffe3c09e048b6470c86bd44377f2fce4aad4ed4d635c0a77432d0c798d49f1f36c78a27a79ea5ea30a875d7ad7dbd2ad7266a111538e646c3c699b11333b19f96f91c7f986156e85738958d1c44c6e780645ba40e63933d2297ef1db212b48576a8386841128acd8cb9861f3dcc89cbbf885afae38b3af06cff6f3a75d9b1e2f25