15721.courses.cs.cmu.edu
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:61:a0:e0:b8:56:65:dc:ca:3d:e0:5f:b1:ec:e8:46:3d:e5 was issued on by Let's Encrypt.
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Certificate Subject
CN=15721.courses.cs.cmu.edu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:61:a0:e0:b8:56:65:dc:ca:3d:e0:5f:b1:ec:e8:46:3d:e5Serial Number (int): 381670376611002429836362145766516386577893
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 82:f2:b4:af:1f:bc:92:33:75:d0:c4:91:f3:aa:42:2a:28:e8:b0:b9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 2f:55:6b:56:1f:f4:0e:cc:39:8f:b0:5e:eb:a9:4a:22:15:58:62:c6
Fingerprint (sha256): 03:56:8f:73:4f:a6:69:ef:14:ea:96:e6:03:51:39:b8:c6:2d:3b:ef:8c:b9:5c:66:f6:a0:03:6e:4f:ac:6a:08
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate 15721.courses.cs.cmu.edu
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for 15721.courses.cs.cmu.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
15721.courses.cs.cmu.edu
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Certificate
The complete raw certificate details for 15721.courses.cs.cmu.edu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGGjCCBQKgAwIBAgISBGGg4LhWZdzKPeBfsezoRj3lMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA4MTYyMTI5MjBaFw0x ODExMTQyMTI5MjBaMCMxITAfBgNVBAMTGDE1NzIxLmNvdXJzZXMuY3MuY211LmVk dTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANw7gbkZKCqiqdW5+jvm T2r32UOyQ87uu+DAIanEvPc4JmouRdQGPG4nOl0N5ezbTYX2H9+Xq14FjBhO70tC EA3AXJJn/Eu77mE7OdxhgY764WjGvGus7cd9MvSClOXsZjEtBuQb6rWGLbPYp19W Upwtt2zcquS7QubgZRI04QloSV+64V6GTeoF1LDUtBM3NXXNCQ7V6TFSJLzo8bGD StHErthOhygwIWoRy+7fJim0f/LzmgbrsFK4VPSg/nokFOCI5FZDH2OzLsyL3WXG xGdGnAPkUjfXg4CcDqB/rVxRNUGuagZXcy3KrLHpymPVoHQ5Aq+UNkjK4qerNe8c tA0CAwEAAaOCAx8wggMbMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEF BQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUgvK0rx+8kjN1 0MSR86pCKijosLkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYI KwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0 c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0 c2VuY3J5cHQub3JnLzAjBgNVHREEHDAaghgxNTcyMS5jb3Vyc2VzLmNzLmNtdS5l ZHUwgf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHWMCYG CCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYBBQUH AgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1cG9u IGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdpdGgg dGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNlbmNy eXB0Lm9yZy9yZXBvc2l0b3J5LzCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1AFWB 1MIWkDYBSuoLm1c8U/DA5Dh4cCUIFy+jqh0HE9MMAAABZUTbf7UAAAQDAEYwRAIg TFFidx9w6O9rJ6GylSedWd6GfwB8yeL6juRCDF0AlWcCIBW0XvOOo/fYItzNQaCm RMcAoRyH778IN8H7Dau2RrHNAHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz0 5UVH9HgAAAFlRNt/ngAABAMARzBFAiAXRQRivQ/kOsebOa6lYqDtk3J4RhH2Xev3 ePfn/7y2XAIhALtv4TJW4zSLYxkeLS/Hg5FrP2e1W3BLOpHhbk8Axzn9MA0GCSqG SIb3DQEBCwUAA4IBAQANFkKMFkXEHbK5r9JVUq2H2/X4MOGhYHhYrIbDT2c7njex VYACFF8k+5JzoZv9Pee5FuGc3umIuAPENpwdMK8qHYWZ6tp77QvpWg0fxtGVNGjH VPrxmhfiMF8dIwXi3TMHaz4kJ25tsMlLAPOBtouF+KvHfZH9VgLX+WU52haC0Yxs wJ0GF1Y3rbES1B9eTgrBD3JxsFHcI85QaCRigQZVBtkdFkH3YhmOkj4sb8W2qNlL 8Wpy2qkhGkA9U0AIOL+5iBwKDdAlXqSNKK6isnBVOrutjFPHVwaNIZ+udlg3cp92 oA39ZGMOlqb2dNaIvTdGBpeotFCzo91sFxlZ0Duv -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3DuBuRkoKqKp1bn6O+ZP avfZQ7JDzu674MAhqcS89zgmai5F1AY8bic6XQ3l7NtNhfYf35erXgWMGE7vS0IQ DcBckmf8S7vuYTs53GGBjvrhaMa8a6ztx30y9IKU5exmMS0G5BvqtYYts9inX1ZS nC23bNyq5LtC5uBlEjThCWhJX7rhXoZN6gXUsNS0Ezc1dc0JDtXpMVIkvOjxsYNK 0cSu2E6HKDAhahHL7t8mKbR/8vOaBuuwUrhU9KD+eiQU4IjkVkMfY7MuzIvdZcbE Z0acA+RSN9eDgJwOoH+tXFE1Qa5qBldzLcqssenKY9WgdDkCr5Q2SMrip6s17xy0 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 381670376611002429836362145766516386577893 . . . . . . . . [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 2018-08-16 21:29:20 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-11-14 21:29:20 +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 '15721.courses.cs.cmu.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 27801770955065037470911950179522074755561011277122643650775979211827933452365268746856777985688614994602491671403187635526775463257498292026913046015029630604088824037842989159482017709541634784241181773373891461459058532568007269595751279805112591333358805102323936019981067640449010879296982667351209028168446799924218665787640612369719870571896397965519368641701042571352382197789567714550653933819635623200928666956367936471638622407117167988439643103081256293225309172893493859963148023554959247227483306448737613934112528366737634947862533756474804817867274287461966212799911620819119841467292334741149877842957 . . . . . . . . . . . . . . . . . . . . [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) 82f2b4af1fbc923375d0c491f3aa422a28e8b0b9 . . . . . . . . . . . . . . . . [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 (28 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '15721.courses.cs.cmu.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0075005581d4c2169036014aea0b9b573c53f0c0e43878702508172fa3aa1d0713d30c0000016544db7fb5000004030046304402204c5162771f70e8ef6b27a1b295279d59de867f007cc9e2fa8ee4420c5d009567022015b45ef38ea3f7d822dccd41a0a644c700a11c87efbf0837c1fb0dabb646b1cd007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016544db7f9e0000040300473045022017450462bd0fe43ac79b39aea562a0ed9372784611f65debf778f7e7ffbcb65c022100bb6fe13256e3348b63191e2d2fc783916b3f67b55b704b3a91e16e4f00c739fd . . . . [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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