yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4d:61:b7:7d:30:25:6b:ff:ed:8b:4b:07:b2:e7:79:0a:2b 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=yushikai.co.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:4d:61:b7:7d:30:25:6b:ff:ed:8b:4b:07:b2:e7:79:0a:2bSerial Number (int): 287668487893224984105834181978168797760043
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 1c:82:92:b7:af:96:ad:fe:6e:95:59:4f:80:80:06:58:d2:79:bd:20
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 38:39:92:4c:52:4b:34:4d:a5:c4:5b:d8:d3:23:96:da:33:9c:13:49
Fingerprint (sha256): 0e:33:e5:40:f3:43:50:c7:1e:ff:ef:9a:62:e0:77:3b:f0:00:a5:9c:56:3f:af:c8:39:4a:88:8d:34:e3:f5:9e
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate yushikai.co.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for yushikai.co.uk
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.yushikai.co.uk
yushikai.co.uk
yushikai.co.uk
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(limited to 100 certificates)
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yushikai.co.uk
yushikai.co.uk
www.yushikai.co.uk
yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
yushikai.co.uk
yushikai.co.uk
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*.yushikai.co.uk
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yushikai.co.uk
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGZzCCBU+gAwIBAgISA01ht30wJWv/7YtLB7LneQorMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMDUwMjU3MTBaFw0x OTA1MDYwMjU3MTBaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA02RoSGJFaYBJf1WObr5ekhUPiZwd6rtF C3UYUA5A866ph5i2QNSCQeMzTifXXqZqhlDq8hdh9rfd3mYed1swgFcva0T6FAPP 2nYd4Jq1JJnazZxxSZ0cPZOU09mORNd7xWmwFPGPU9vSp/B6heGna+FfG5k7P29c PxEMCsKekOY13rPasv0SvgbcMRXLknP8JUeqG7+tBz9yWKGSiU2dSK/8hjE9TVmr 2fpVRTJna9NDysGcsE5pPaiI6LZGiHryHWZT9t27BH/uLPA9AzZgYDJti0eOA74q uqZcIzaPOc58Y0u4y7ZnISJQfHGiNnkKQ6yfDqORLsxjdHH182yyG0K0UlsY1v9m JDv+KRcknB30f1sjkvRQyKj7qWV1GCLz/Jl8o/rnrmJrlJdIE54KTEQDGPhJfDvR sj+/t2rW7QSXGYKZbpXey/M/wJX8mFpq5aezcZA3JwbfY1/Pns+95tTKLIzuDJyR o4UDtai5WMZzH1gz3E9DwWyeHXCe5BdQrGlesZHtzIDOjjmHL77rQmtH7wwO4FPH SxVjQCZOxspxJmwzKl65ZtIZDYNYI3cRPyvZnm7vWQBoFoJSdRZc0cXhT/mQ3zIK q27Qks7BDmYBMztZ7rAmvHVh421RMNEQSLU8ioXt98J4wdVEyk7OA1tKkICAwAmo g1HvkkIRkSsCAwEAAaOCAnYwggJyMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUHIKS t6+Wrf5ulVlPgIAGWNJ5vSAwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHUA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFou81zOgAABAMARjBEAiA6uY0ff8l2dGqfnJ7F0fUffyNS dQB5mt+F8fD0dMAeQgIgG82owxuQ8f2YOPL8HQzviyDY0ziHyaWcPC/OfLG9Sp4A dgApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAAAWi7zXM8AAAEAwBH MEUCIQC0D5939WfMblAzgk7F/1vr0zdLfz9goJj6pB/OzhfDMAIgRwV4GoH2oRhh gbPqwQczuQft1XOtyRSDrkM01pwBAl4wDQYJKoZIhvcNAQELBQADggEBAGaRoPJN KMPbPBO8QIKYIyF+W2Vm/m38jbd5pPFY+6p16HKFNgzXrb+ePHJ/p6Malbn7n4vw k4XHfk7a5ehfj4+bLe9udZH9fl+o+qH0Hw/JTerjdelvoSPZaWq3YmQZDtIvM8ch nx3Fc+eVdHc4wsunztbecLsznTe9HaENZz57Ks/w2CsHeiY6KyN2bCRd4PuLpHar 25Wl3rJCfWg3NumiD2hg0dcO+N0jtweevzpGqZcvMtPZm6TBmAcg98BBje1VNCK0 7qUf3juhBNnY7AVSknms2DnqzaQskFDdI6HTziGR/m9692DvFbQLy3RSXM+HhGv5 rOO+XXwSCEynzQM= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA02RoSGJFaYBJf1WObr5e khUPiZwd6rtFC3UYUA5A866ph5i2QNSCQeMzTifXXqZqhlDq8hdh9rfd3mYed1sw gFcva0T6FAPP2nYd4Jq1JJnazZxxSZ0cPZOU09mORNd7xWmwFPGPU9vSp/B6heGn a+FfG5k7P29cPxEMCsKekOY13rPasv0SvgbcMRXLknP8JUeqG7+tBz9yWKGSiU2d SK/8hjE9TVmr2fpVRTJna9NDysGcsE5pPaiI6LZGiHryHWZT9t27BH/uLPA9AzZg YDJti0eOA74quqZcIzaPOc58Y0u4y7ZnISJQfHGiNnkKQ6yfDqORLsxjdHH182yy G0K0UlsY1v9mJDv+KRcknB30f1sjkvRQyKj7qWV1GCLz/Jl8o/rnrmJrlJdIE54K TEQDGPhJfDvRsj+/t2rW7QSXGYKZbpXey/M/wJX8mFpq5aezcZA3JwbfY1/Pns+9 5tTKLIzuDJyRo4UDtai5WMZzH1gz3E9DwWyeHXCe5BdQrGlesZHtzIDOjjmHL77r QmtH7wwO4FPHSxVjQCZOxspxJmwzKl65ZtIZDYNYI3cRPyvZnm7vWQBoFoJSdRZc 0cXhT/mQ3zIKq27Qks7BDmYBMztZ7rAmvHVh421RMNEQSLU8ioXt98J4wdVEyk7O A1tKkICAwAmog1HvkkIRkSsCAwEAAQ== -----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 287668487893224984105834181978168797760043 . . . . . . . . [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 2019-02-05 02:57:10 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-06 02:57:10 +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 'yushikai.co.uk' . . . . . . . . [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 862405000962136076286655449676557539294561178689884472302318334163680477069153135020528319367313398519572541116333963950795115899771930201971811825320378362942805068090512982853884940080830385168597708690810692163357627949863733937320100559955633319924976993470189586912064404867833493824325674035201711471839537754563333675545149185942534744249273177590362781864650366185734557907574365141765666420289638124394491203468871150106555972649014494373037196046080967010554330026606206627006482987556342722123489947381879933037874231436984937240251298873431492403311458102380426905523800686774835905483724487283987574180335289814620550543531484573983918314437447033877572652753350713642144114615046523166812113220919321389556376286549900126004499783588028326512855947624284160950949065887657860247325063564289344907809833623365661141731698962996352722928187856499097262358126994203349447144529991948215734357988797404727956571290070599391442636354185562547738866450993193587367702869442120733326501735289379414676211314313992046494050028930216570795671310707738645841081336108081371094406343890796566152757726329342563212434392079360341952599105842455807755318489584273152840255937313992933361133375165397473037410465121445609776708948267 . . . . . . . . . . . . . . . . . . . . [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) 1c8292b7af96adfe6e95594f80800658d279bd20 . . . . . . . . . . . . . . . . [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 (38 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yushikai.co.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yushikai.co.uk' . . . . . . . . . . . . . . . . [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) 00ef007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000168bbcd733a000004030046304402203ab98d1f7fc976746a9f9c9ec5d1f51f7f23527500799adf85f1f0f474c01e4202201bcda8c31b90f1fd9838f2fc1d0cef8b20d8d33887c9a59c3c2fce7cb1bd4a9e007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000168bbcd733c0000040300473045022100b40f9f77f567cc6e5033824ec5ff5bebd3374b7f3f60a098faa41fcece17c33002204705781a81f6a1186181b3eac10733b907edd573adc91483ae4334d69c01025e . . . . [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) 006691a0f24d28c3db3c13bc40829823217e5b6566fe6dfc8db779a4f158fbaa75e87285360cd7adbf9e3c727fa7a31a95b9fb9f8bf09385c77e4edae5e85f8f8f9b2def6e7591fd7e5fa8faa1f41f0fc94deae375e96fa123d9696ab76264190ed22f33c7219f1dc573e795747738c2cba7ced6de70bb339d37bd1da10d673e7b2acff0d82b077a263a2b23766c245de0fb8ba476abdb95a5deb2427d683736e9a20f6860d1d70ef8dd23b7079ebf3a46a9972f32d3d99ba4c1980720f7c0418ded553422b4eea51fde3ba104d9d8ec05529279acd839eacda42c9050dd23a1d3ce2191fe6f7af760ef15b40bcb74525ccf87846bf9ace3be5d7c12084ca7cd03