blog.nagayama.dev
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:01:84:5d:38:9b:29:31:12:af:5f:f5:33:db:2a:46:9e:a3 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=blog.nagayama.dev
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:01:84:5d:38:9b:29:31:12:af:5f:f5:33:db:2a:46:9e:a3Serial Number (int): 261853082289361182242737872710210121277091
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 38:56:ad:07:ba:63:3d:51:fb:4a:0c:72:14:9f:3f:eb:f0:6e:45:1b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9a:b5:40:f3:48:a8:df:57:1b:01:e4:3b:0b:0b:cd:e0:7d:87:bc:e8
Fingerprint (sha256): 19:be:ad:d0:2d:b3:ff:49:51:00:2a:a7:64:f9:82:d7:2a:75:bf:e4:3f:d8:cc:39:d4:af:97:45:26:2a:11:25
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate blog.nagayama.dev
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for blog.nagayama.dev
Public Key Algorithm
ECDSA
Key Size
256
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
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
blog.nagayama.dev
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survey.ssq.ca
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Certificate
The complete raw certificate details for blog.nagayama.dev in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIEjjCCA3agAwIBAgISAwGEXTibKTESr1/1M9sqRp6jMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MDcwOTQ2NTBaFw0x OTA5MDUwOTQ2NTBaMBwxGjAYBgNVBAMTEWJsb2cubmFnYXlhbWEuZGV2MFkwEwYH KoZIzj0CAQYIKoZIzj0DAQcDQgAEw8PtcBJYoUr+aD/hZolbKYzVrUY4cRT8b9a9 KkJvbTe4TTqe43E2e0z8oPFYTo3emlOx/aa1aVXUXA9/cKIm6KOCAmUwggJhMA4G A1UdDwEB/wQEAwIHgDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYD VR0TAQH/BAIwADAdBgNVHQ4EFgQUOFatB7pjPVH7SgxyFJ8/6/BuRRswHwYDVR0j BBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsG AQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5cHQub3JnMC8GCCsG AQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5cHQub3JnLzAcBgNV HREEFTATghFibG9nLm5hZ2F5YW1hLmRldjBMBgNVHSAERTBDMAgGBmeBDAECATA3 BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNy eXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1AOJpS64m6OlACeiGG7Y7 g9Q+5/50iPukjyiTAZ3d8dv+AAABazGMXWIAAAQDAEYwRAIgG/LFbxp1l9IjQFjp LwH+Nk+Mh8w4+Xy5YqRqItU2mVwCIGUt4IUC71PJa1feuKQwf5z8mkvTUYBznfdo QbSjEVZAAHYAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL2I0AAAFrMYxd ggAABAMARzBFAiEA5PVmyevV0RSo8naNI8W4brjB3MzAj21ApE7Smn/SR0YCIHfa YqjjX+GcfY9skCIlZJGB77OmaxuI5xifJzOvqaGAMA0GCSqGSIb3DQEBCwUAA4IB AQBNFVggS/w3AxFpiB4YRNmIpEcTO1MHXK8XsG0qq5cfX9bXW53nXBbfhgJ2j2Q5 TP6B3QwYZYmEDMbmzwgXWP7uaUz/R9izd8hUof0BN3X93DkM9maQcKAnibQ1uLUe D75p7Nl8hrIlGOHocVUHzurnKT3xPUaJK7tSbzHlmwFjMU4Xz/ZjO42i3bDHrnR3 WnexlLGpxGKggeCdEWfKyXLg43Ats+S0XPDruv8xvPU3R3AjtUf+lqsphM0k0z0O cq3BM+Uq3Kq/gflTKSkVsStzbdNFNjx6VYR+JSQmxsW8GinGQpBtYaePzd/kJOqD Z11KhBKY5VWD1T0ry3P7ugyq -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEw8PtcBJYoUr+aD/hZolbKYzVrUY4 cRT8b9a9KkJvbTe4TTqe43E2e0z8oPFYTo3emlOx/aa1aVXUXA9/cKIm6A== -----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 261853082289361182242737872710210121277091 . . . . . . . . [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 2019-06-07 09:46:50 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-05 09:46:50 +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 'blog.nagayama.dev' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey) . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1) . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits) 0004c3c3ed701258a14afe683fe166895b298cd5ad46387114fc6fd6bd2a426f6d37b84d3a9ee371367b4cfca0f1584e8dde9a53b1fda6b56955d45c0f7f70a226e8 . . . . . . . . [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 (1 bits) 0780 . . . . . . . . . . . . . . . . [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) 3856ad07ba633d51fb4a0c72149f3febf06e451b . . . . . . . . . . . . . . . . [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 (21 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blog.nagayama.dev' . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b318c5d62000004030046304402201bf2c56f1a7597d2234058e92f01fe364f8c87cc38f97cb962a46a22d536995c0220652de08502ef53c96b57deb8a4307f9cfc9a4bd35180739df76841b4a311564000760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b318c5d820000040300473045022100e4f566c9ebd5d114a8f2768d23c5b86eb8c1dcccc08f6d40a44ed29a7fd24746022077da62a8e35fe19c7d8f6c902225649181efb3a66b1b88e7189f2733afa9a180 . . . . [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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