www.modarres.umd.edu
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:b1:a1:77:5d:b4:1b:54:b4:06:b7:c7:f2:1a:29:6f:cd:cd was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=www.modarres.umd.edu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:b1:a1:77:5d:b4:1b:54:b4:06:b7:c7:f2:1a:29:6f:cd:cdSerial Number (int): 408893748163228252606895055931362339966413
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: ec:ee:42:a3:a3:23:e7:b0:7d:8b:a3:ef:75:04:43:b7:4d:d1:2f:6d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 27:3f:95:36:e9:31:ce:77:9b:45:e0:ae:ce:7e:e2:0e:d4:68:83:6f
Fingerprint (sha256): 01:5c:95:3d:01:46:d7:5c:90:1c:be:73:c2:a5:d1:b9:48:86:8e:06:7b:e1:09:db:6d:c9:8a:17:da:be:37:a1
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.modarres.umd.edu
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.modarres.umd.edu
Public Key Algorithm
RSA
Key Size
4096
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
modarres.umd.edu
www.modarres.umd.edu
www.modarres.umd.edu
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Certificate
The complete raw certificate details for www.modarres.umd.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGcjCCBVqgAwIBAgISBLGhd120G1S0BrfH8hopb83NMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MTExMDM2MjVaFw0x OTA5MDkxMDM2MjVaMB8xHTAbBgNVBAMTFHd3dy5tb2RhcnJlcy51bWQuZWR1MIIC IjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvdkf2YhFZEaujzYQXf1vH2eM 3x/qaLvXL2FjDeHAkPS/zKFhRItog3ywbY9koEDsREtfbCUEcYY0Iz/YmH4TNPWS 9lp4YgRjb8+ZQv1FgDru+KpHJeg3RwBtvKV0fgiM+1KLTzouMCSlKuFC7BmsYW8Z 4xTerZ/lZJnvV9eCuf1QGIefK086gPbYJweLYh8yKXlO4stUxuR0ZJ5hsBmxf590 N+RZ0dXXu0N3Uop/TLN7WM8fdOYItXhObclT03J6clvfMdhbhujSaJnrYirsLQnD OpnShgZa4QRRyGbFlAbmZ8zfReU/mRkjJPHSagBO68vU7fUFutPai1J3dvAwm4lV u7lMNBLXN/1oYMfyzAhD4ZqYkzMG1ETu/YuE3D2FwZHL0z+19GPisCBX8aBCKKdr r/eKR3dMFtTM4p+ivGH0ksxoEurQtmnxgcpg047qOT2BRXDLhnL+mIFnfxZVbaut NFUCAOU0cjsJN0BOglVb73NDw0HDmxn5G+mxK4XwMIYsgJtTu31hc4pWPmdCF3CA Gr/tcTNwwnuZnVET0Z2B2mF2PT4OQ5nM5RENdvvWpKvNsrl3xLwRRO2rpDLPU1dv DlZEtMRNam5PFup9x75JxHtzpG22kdVkmh6CptK3+QDCEfBBVwgOuq34L5YmCUms 4Fo1oD3JIRLMGhNltxcCAwEAAaOCAnswggJ3MA4GA1UdDwEB/wQEAwIFoDAdBgNV HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E FgQU7O5Co6Mj57B9i6PvdQRDt03RL20wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3 pkVl7/Oo7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2Nz cC5pbnQteDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2Vy dC5pbnQteDMubGV0c2VuY3J5cHQub3JnLzAxBgNVHREEKjAoghBtb2RhcnJlcy51 bWQuZWR1ghR3d3cubW9kYXJyZXMudW1kLmVkdTBMBgNVHSAERTBDMAgGBmeBDAEC ATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNl bmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB3AHR+2oMxrTMQkSGc ziVPQnDCv/1eQiAIxjc1eeYQe8xWAAABa0ZTMaEAAAQDAEgwRgIhAMsZFRSzs8VR U0/ioqjuJASidnj4xoM2cLDhgwG3QVBzAiEA0jRZi9oK95IexByfg7L7JSGCnp23 dOjupPlhuiMgjEYAdQApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAA AWtGUzGaAAAEAwBGMEQCIDG/LcE8/gJUcNu3IFh4M7ZZLDQeqFjRbZ4WaTSmV9yx AiBChb9k8Al5pgdMo6PfZdD+6Zet6TeBEZYwwJaCgAUGuTANBgkqhkiG9w0BAQsF AAOCAQEAHU7HutPVPGVuV2h8/g1kQjnTmZIPE2tdc3d9Ppe5YXqXs3RCjQtz+Je9 rUVQ3fTSFxHJL+GBP94NmO7+AOSzSgCvlHxSP7C0CbDOmNYlGVXt7VsvVwLvCZeI 1IAEb0A7PKKOqOvjbm67B34mzW4m9aiaGv5fXwjoLrL4VyX4IQWg/i7RAa8I6Poc Ucq27BrPw48yyOy1xrJ8wFhEvWg2fP3b3xa2zo86sLQ2VRw7PPe+bIYz8+z1bGWU KqPW8U8AZDEyg3HU1TSMPkzAGWQRVqv+hDcTLt7EJGUS4f4c0tLd77DhXL2jSEiA 2ZT+DkDfhNuJTQRZQldz4WlRdzpp/A== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvdkf2YhFZEaujzYQXf1v H2eM3x/qaLvXL2FjDeHAkPS/zKFhRItog3ywbY9koEDsREtfbCUEcYY0Iz/YmH4T NPWS9lp4YgRjb8+ZQv1FgDru+KpHJeg3RwBtvKV0fgiM+1KLTzouMCSlKuFC7Bms YW8Z4xTerZ/lZJnvV9eCuf1QGIefK086gPbYJweLYh8yKXlO4stUxuR0ZJ5hsBmx f590N+RZ0dXXu0N3Uop/TLN7WM8fdOYItXhObclT03J6clvfMdhbhujSaJnrYirs LQnDOpnShgZa4QRRyGbFlAbmZ8zfReU/mRkjJPHSagBO68vU7fUFutPai1J3dvAw m4lVu7lMNBLXN/1oYMfyzAhD4ZqYkzMG1ETu/YuE3D2FwZHL0z+19GPisCBX8aBC KKdrr/eKR3dMFtTM4p+ivGH0ksxoEurQtmnxgcpg047qOT2BRXDLhnL+mIFnfxZV bautNFUCAOU0cjsJN0BOglVb73NDw0HDmxn5G+mxK4XwMIYsgJtTu31hc4pWPmdC F3CAGr/tcTNwwnuZnVET0Z2B2mF2PT4OQ5nM5RENdvvWpKvNsrl3xLwRRO2rpDLP U1dvDlZEtMRNam5PFup9x75JxHtzpG22kdVkmh6CptK3+QDCEfBBVwgOuq34L5Ym CUms4Fo1oD3JIRLMGhNltxcCAwEAAQ== -----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 408893748163228252606895055931362339966413 . . . . . . . . [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 2019-06-11 10:36:25 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-09 10:36:25 +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 'www.modarres.umd.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 774512847307517357873454152058447922246680095141015332102915086614808894524065206789487673955219228157122785403857362794416075045220262118979518777683332558159590684252154064079780300161173263313856812804627189176173818211553296616686915961425455456982453949286203049848665147970856429015462373865133457037528958794989416749850320491174209193421916221667832659243959052652640047059772777497736922940655807421785081107181340704185031959988354672449494590340447481531673859317942992215768321391412489526624199496683370035755518552611714905302561097924493245818473694053250143915860292818606786924701681120229711353150694131275106765480391664315080368143056805954406824616048575083188571052004745989234130128745597219325253698957472701381019202236951768777399010665552838137639502316684643883649244995467443495210637871839811336317659433891257248570347463657551326380663817313795178776483461511971214440064360733959181531912980752024753642394122280575131177012262843877929293923042019273191533231694142941155643533537549170351639407303856794871782727898656056002991915852263626872736707205899176721946809768913968768194151626289579095099896629896133505948184161214172232863035676578590173181148120156059412754299743332200175817795680023 . . . . . . . . . . . . . . . . . . . . [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) ecee42a3a323e7b07d8ba3ef750443b74dd12f6d . . . . . . . . . . . . . . . . [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 (42 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'modarres.umd.edu' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.modarres.umd.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) 00f0007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b465331a10000040300483046022100cb191514b3b3c551534fe2a2a8ee2404a27678f8c6833670b0e18301b7415073022100d234598bda0af7921ec41c9f83b2fb2521829e9db774e8eea4f961ba23208c46007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b4653319a0000040300463044022031bf2dc13cfe025470dbb720587833b6592c341ea858d16d9e166934a657dcb102204285bf64f00979a6074ca3a3df65d0fee997ade93781119630c09682800506b9 . . . . [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) 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