i.sndu.cn

Issued by Let's Encrypt Authority X1

About this certificate


This digital certificate with serial number 01:bd:fd:04:e7:08:13:a4:31:52:af:61:00:7d:7c:17:4c:20 was issued on by Let's Encrypt .

While the 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.

i.sndu.cn

Let's Encrypt

Organization: Let's Encrypt

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 01:bd:fd:04:e7:08:13:a4:31:52:af:61:00:7d:7c:17:4c:20
Serial Number (int): 151761973417815156551949110660652049320992
Serial Number lenght: 137 bits, 18 octets

SubjectKeyId: 4c:b6:59:07:16:43:94:54:34:c6:1d:ce:47:11:96:ee:bb:2d:9b:7e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d2:30:8e:2b:3b:0b:cd:07:33:0a:66:0c:6c:c0:a4:93:89:ca:aa:f4
Fingerprint (sha256): 41:d0:74:5e:40:8a:61:fe:ff:cf:78:09:c2:a9:9b:e0:17:47:21:67:ab:cb:dc:64:17:c5:f4:2a:a6:54:48:0f

Issuing Certificate URL: http://cert.int-x1.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x1.letsencrypt.org/

Check the revocation status for the current certificate on i.sndu.cn
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details about this certificate


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

8 extensions
No unhandled critical extensions



CA Certificate

This is not a CA certificate

Subject Alternative Names

This certificate doesn't contain any other subject alternative names besides the common name of the subject: i.sndu.cn

Certificate

The complete raw certificate details in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIF9jCCBN6gAwIBAgISAb39BOcIE6QxUq9hAH18F0wgMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMTAeFw0xNTEyMDgwMzE1MDBaFw0x NjAzMDcwMzE1MDBaMBQxEjAQBgNVBAMTCWkuc25kdS5jbjCCAiIwDQYJKoZIhvcN AQEBBQADggIPADCCAgoCggIBAMbzVF2SxVnNahzPKrURsXORhviily9taiKLOgd/ P8lxxHjzNnnBLgTj39dCZRYiPX3kYTR8ttr7vCnUdaF51J+ph3oEc3CsIjaeYISz q+VVC+UigqQqSd58S/dQgCx7qvhpOVvWl3Du/PDwnlHlDjpJTLC7IZzv6kUI0GIO 6pvr7IL5NKTKy3NmBNW0uR82e5QnnLdON4PwqAskUSfOAr0Ezh9cujXu2m3WWnoU hAEsbYHQh4pV2FExt9fgn/EN3qTYjZtZplbm/gVNQO40KzGKvlWRAB5qs0ygLk5A 3cwdCng+n/FfHJQ3eOL5uXGwaUVwzrynGwp1fWbDfCjGATBLgfwBBTizSMF5+eip p+Rznr1CdxjVYNLGDG4fuhEl37g17yPnrNtSEfra3C9yv9w1vzwwiCvtXWLWK+dt axX06kGS4FNqWK8Xbd1jqrmK+LrkhWXlW5tLRaLwn1A8FLOi/TxG4Qg4wMYHSkia +7JWH9ee1nbBOMSjPi4qcbZkAi9JsH9uVu3JYQIh3cbnmGB0KwD6NHM63L+APhlQ Jwky3lfvcP79anHwY5C6wCgm4qH9X48joZa/n6s4QgjaY1KqACeUgK90nRaQ3lL8 tCJeAYMeDKntYk69YO5oO04iPir48Fts5gz7AuXrAfSb+3vuUKY69d2Hu0UIv5Fm je+hAgMBAAGjggIKMIICBjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFEy2WQcWQ5RU NMYdzkcRlu67LZt+MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMHAG CCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3AuaW50LXgxLmxl dHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14MS5s ZXRzZW5jcnlwdC5vcmcvMBQGA1UdEQQNMAuCCWkuc25kdS5jbjCB/gYDVR0gBIH2 MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggrBgEFBQcCAjCBngyBm1RoaXMg Q2VydGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVkIHVwb24gYnkgUmVseWluZyBQ YXJ0aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNh dGUgUG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0c2VuY3J5cHQub3JnL3JlcG9z aXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQCSWs3Aavj4ZtP5qOUv0aSRmfmnynf2 8QkVImF1lmbsTNftyHdwNayj5PTxLQy7Qjb267UN4rOSbMMtdp85KYF/XKpUb9I+ 7TCpUDjoRgOnD76E+HsIWuPJPbmr4CcSPSqpOFLP5ErzYDO//ZpaB9wXA/4bu58e Q1naU/HpyXQh+HYGuEKU51hHUV5gLXQ9N06ZrOeuufbPcY13GC+wQZZ6nkL22ISM obU5k4JH77vqyFODLu5KfcYstJ5dyVs9EnFmFhhCZYIBSjA0EUp8H+YPQMFlcKuL iMnxYhxTEwDoqFBIOFCgnL0Tj/dKIRWzOHKI7x9vxvR0Ji0PicXUt43J -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxvNUXZLFWc1qHM8qtRGx c5GG+KKXL21qIos6B38/yXHEePM2ecEuBOPf10JlFiI9feRhNHy22vu8KdR1oXnU n6mHegRzcKwiNp5ghLOr5VUL5SKCpCpJ3nxL91CALHuq+Gk5W9aXcO788PCeUeUO OklMsLshnO/qRQjQYg7qm+vsgvk0pMrLc2YE1bS5HzZ7lCect043g/CoCyRRJ84C vQTOH1y6Ne7abdZaehSEASxtgdCHilXYUTG31+Cf8Q3epNiNm1mmVub+BU1A7jQr MYq+VZEAHmqzTKAuTkDdzB0KeD6f8V8clDd44vm5cbBpRXDOvKcbCnV9ZsN8KMYB MEuB/AEFOLNIwXn56Kmn5HOevUJ3GNVg0sYMbh+6ESXfuDXvI+es21IR+trcL3K/ 3DW/PDCIK+1dYtYr521rFfTqQZLgU2pYrxdt3WOquYr4uuSFZeVbm0tFovCfUDwU s6L9PEbhCDjAxgdKSJr7slYf157WdsE4xKM+LipxtmQCL0mwf25W7clhAiHdxueY YHQrAPo0czrcv4A+GVAnCTLeV+9w/v1qcfBjkLrAKCbiof1fjyOhlr+fqzhCCNpj UqoAJ5SAr3SdFpDeUvy0Il4Bgx4Mqe1iTr1g7mg7TiI+KvjwW2zmDPsC5esB9Jv7 e+5Qpjr13Ye7RQi/kWaN76ECAwEAAQ== -----END PUBLIC KEY-----

ASN1 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 151761973417815156551949110660652049320992 . . . . . . . . [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 X1' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-12-08 03:15:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-03-07 03:15:00 +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 'i.sndu.cn' . . . . . . . . [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 811647251900478089508599583127298306288159637615901947477839850430542974017333120957180978673870504878989149485123209849190887696920801755354393967477105913653131703712395118530251147166238282232128210322514441304589541821630209841534195444187398912195322161191213519942211251978157814747193768870075458600929454550566687574285898713513261468866107921320067090470054875808493790261502737338105388508072056802201064852431694921135096074441595949022001923193325696172376441854976916009117656311888133417760064633144919545891636498608723552426667885097008864387824606269725006643088264806552583556954323151504742135112325935035274352323901805890300738329174170245513869258543838399851635162662018472574390701457384445342891941198843208120061819533290909331872525691832838081023422417639723805290861906879884373578942247888075392622657769310337155147501006115636630673088069716695603503804554923304155443305676879390080408614648203446774469130878277116831751343785266116916859441195394458674778819358019397575267055311512711426854880150011636785285234580424677132739250523116435467393947741753650119660149914292432422656630657852137875991216931210893025343008629835786040439168333565021741655364185057528721321444919508504076391377924001 . . . . . . . . . . . . . . . . . . . . [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) 4cb659071643945434c61dce471196eebb2d9b7e . . . . . . . . . . . . . . . . [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 (100 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-x1.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-x1.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 (13 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'i.sndu.cn' . . . . . . . . . . . . . . . . [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 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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