www.lettura.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:8c:78:91:4a:9e:c5:a6:6c:06:aa:41:7e:90:70:75:4e:28 was issued on by Let's Encrypt.
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.lettura.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:8c:78:91:4a:9e:c5:a6:6c:06:aa:41:7e:90:70:75:4e:28Serial Number (int): 396248936851988579012359403379020600266280
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: b9:02:73:10:77:db:a7:4f:d4:6c:46:26:b0:d2:da:47:6e:d8:f0:bd
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): a5:c8:63:a7:cd:a4:ca:a6:95:31:a0:76:35:4c:65:3c:89:37:f0:5a
Fingerprint (sha256): e6:11:b1:cb:27:0a:4d:67:64:4b:60:32:07:d6:ce:9a:c3:7c:f0:fd:6b:c9:d0:cf:8b:c5:de:9c:1d:9a:df:31
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.lettura.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.lettura.com
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
www.lettura.com
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Certificate
The complete raw certificate details for www.lettura.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGVzCCBT+gAwIBAgISBIx4kUqexaZsBqpBfpBwdU4oMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMjgxMzA1MDhaFw0y MDA0MjcxMzA1MDhaMBoxGDAWBgNVBAMTD3d3dy5sZXR0dXJhLmNvbTCCAiIwDQYJ KoZIhvcNAQEBBQADggIPADCCAgoCggIBAKSbkB9hL3VQjFU8fz9JKpMc18qvlHkV /Eh6DoFSVuV65DW4irBu/OktjlYAah1Cwu+WmrtzaKADlcbjWadj+og7oBRlwCHC 4uU6cL01EWoNNG1BePoTnus62CQJzAoYfMIvtRuJNwlkPZSes3z6CeqagZaargfj keqHUJJ4bVCb4JTHmqzQ7IkvZCrQa5oJKmvobzj5PgGSFEZLTVrdcv47tw66k53r fsINZHNtabf+laW46urUVyjfWPvxT0F0aUyzi5RjgtRG4F2Budy6J2r9l/cJnwF9 iFE9AuuS++JcSZkCuRi4P9sH6DQHgnP6Pf2IuLNgVsorLozCvNL7zUQH7s2hqBxQ zeaYdEUmIUzmVC6IdPd6tY523N3EF7fCkH3P0fHWqOv3305sbyxcMQqV7AEWZnJR 0t7U7WTrgVV4Tqn95p4IGWzNuBdeZUcjLgjfTi2tSHvtFSmabqyUvxKxgnu4ig5j 8NTAYzTwXgVSfu1fzR7o6/3wVFrL5RBuR8cdm6LbiK80SBoM2HZ9i4oG95t0Kubd hNwYhm/GNl6Lo9bc+n+kEGcUmFwn6kRJHl8OF2BJ2nEKnkCD+UXQHOBnDJOPKpOX hWvd4u0YBX4JWUzf7L0V1/hOZiUKwTyFN7DDHkqBwcbAzfyoiCoKnd7QYo3PFMir 3Ie/WDbu7/IbAgMBAAGjggJlMIICYTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYw FAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFLkC cxB326dP1GxGJrDS2kdu2PC9MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/z qOyhMG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZy8wGgYDVR0RBBMwEYIPd3d3LmxldHR1cmEuY29t MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUH AgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB 9gSB8wDxAHYAXqdz+d9WwOe1Nkh90EngMnqRmgyEoRIShBh1loFxRVgAAAFv7Hhb DAAABAMARzBFAiEArC+Wk4X4PhhjVRlhk7jg4CdIaxpLiEoIP1jYsxIfF7MCICyt KXgUBxW1cq+ooI9x+NHaxkIZAFJbet/vftIq9rRcAHcAB7dcG+V9aP/xsMYdIxXH uuZXfFeUt2ruvGE6GmnTohwAAAFv7HhbMgAABAMASDBGAiEAq2UWbPV0TTXvnPXu fNPVdg0ajV6oZ6JITnrqVlVPbgsCIQDRor36Lc3NJadizZmN9nGqOcGffb6KFjpA 5CpQlvq11zANBgkqhkiG9w0BAQsFAAOCAQEAUBeohxnEqois4ZLNfFS2VaT4Fw1f Bys+s0Xb+ohMUQXtA4VlDemzs5D+/X3xvsS9T1qbrE13jD5peGUsi+iVDdXm76cm S1sJPsbH63l2d/8/q02mdZCZeYoEiKkBwHJYKUSZqjflbPtE19AOvXtU97nogBcX yVvJx4z81KFJQItaeP5+m5kSUpy1ECaXSAlPzr03KqYF5kqqz7QW3pkX9O1ZMPiY 6jtcHtzzisMDXCzJMx1qa/a9r14n8YIBRTouZ9gIIaB3Wlxi6sZxeNDeMR/HIydg bo1AdcmexToGILhIlnHIDKqLVtIK0BXhD/TsbAH/WTTMtsnKbgObiKQTog== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEApJuQH2EvdVCMVTx/P0kq kxzXyq+UeRX8SHoOgVJW5XrkNbiKsG786S2OVgBqHULC75aau3NooAOVxuNZp2P6 iDugFGXAIcLi5TpwvTURag00bUF4+hOe6zrYJAnMChh8wi+1G4k3CWQ9lJ6zfPoJ 6pqBlpquB+OR6odQknhtUJvglMearNDsiS9kKtBrmgkqa+hvOPk+AZIURktNWt1y /ju3DrqTnet+wg1kc21pt/6Vpbjq6tRXKN9Y+/FPQXRpTLOLlGOC1EbgXYG53Lon av2X9wmfAX2IUT0C65L74lxJmQK5GLg/2wfoNAeCc/o9/Yi4s2BWyisujMK80vvN RAfuzaGoHFDN5ph0RSYhTOZULoh093q1jnbc3cQXt8KQfc/R8dao6/ffTmxvLFwx CpXsARZmclHS3tTtZOuBVXhOqf3mnggZbM24F15lRyMuCN9OLa1Ie+0VKZpurJS/ ErGCe7iKDmPw1MBjNPBeBVJ+7V/NHujr/fBUWsvlEG5Hxx2botuIrzRIGgzYdn2L igb3m3Qq5t2E3BiGb8Y2Xouj1tz6f6QQZxSYXCfqREkeXw4XYEnacQqeQIP5RdAc 4GcMk48qk5eFa93i7RgFfglZTN/svRXX+E5mJQrBPIU3sMMeSoHBxsDN/KiIKgqd 3tBijc8UyKvch79YNu7v8hsCAwEAAQ== -----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 396248936851988579012359403379020600266280 . . . . . . . . [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 2020-01-28 13:05:08 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-27 13:05:08 +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.lettura.com' . . . . . . . . [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 671540695841733688444577519550556592745586431423171352242147848838896132243550196813199278836412052627830142114678443731240378798572790069277637603352208951997604306557121666840375413801555417320244132533526095319231858329618666424694467081342792000965176943083484400628005706738092040414970736360453337404627338774569843187986785507844827999612655090971452079207736446019356699358499221273325480802834631745134162505810863742292522931871570435976833708788229151753503753430032412497052119315204646753339416965334105656807571182588688868001503446636408305170952958081561536033727860701658633557198199057807918384494609308490049234959881365294685300896371908181687902946814545001252546327384110904562699811250687337492574352963131095675450691987159094868547756058378169153802159123315692683282956979821821659198420836329752090367593793990965392858791549964210910962138184903364392935613303857719119401607541454152905459030572906346216370498833785033467995940207987636431132447988381801974680826691308679829580692607897781209839473004163960543417716108952098463152990051760541551014897181590478964559083937328288538516496474263260244309764111534386281949496364132613693608796799934213256902970350674466996606089620083455535644568187419 . . . . . . . . . . . . . . . . . . . . [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) b902731077dba74fd46c4626b0d2da476ed8f0bd . . . . . . . . . . . . . . . . [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 (19 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.lettura.com' . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016fec785b0c0000040300473045022100ac2f969385f83e186355196193b8e0e027486b1a4b884a083f58d8b3121f17b302202cad2978140715b572afa8a08f71f8d1dac6421900525b7adfef7ed22af6b45c00770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fec785b320000040300483046022100ab65166cf5744d35ef9cf5ee7cd3d5760d1a8d5ea867a2484e7aea56554f6e0b022100d1a2bdfa2dcdcd25a762cd998df671aa39c19f7dbe8a163a40e42a5096fab5d7 . . . . [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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