cs50.io

Issued by Amazon RSA 2048 M01

About this certificate

This digital certificate with serial number 03:d1:78:9a:b4:db:75:87:7c:32:f9:ce:2f:0e:fb:42 was issued on by Amazon.

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=cs50.io

Amazon

Organization: Amazon
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d1:78:9a:b4:db:75:87:7c:32:f9:ce:2f:0e:fb:42
Serial Number (int): 5075320177050603528709309922058107714
Serial Number lenght: 122 bits, 16 octets

SubjectKeyId: 03:b2:e5:13:fd:9e:af:06:52:97:54:79:cb:d3:c3:11:39:e4:ca:91
AuthorityKeyId: 81:b8:0e:63:8a:89:12:18:e5:fa:3b:3b:50:95:9f:e6:e5:90:13:85

Fingerprint (sha1): bd:18:e4:ef:e1:0e:1c:18:5b:a1:2b:43:95:c5:4a:6e:61:40:c6:bd
Fingerprint (sha256): bb:ca:62:b6:fd:14:7d:4b:98:67:02:a8:55:60:dd:e7:e5:23:9e:3d:30:e9:e3:b2:ae:3c:2c:e8:64:75:87:83

Issuing Certificate URL: http://crt.r2m01.amazontrust.com/r2m01.cer

Revocation information

OCSP Server: http://ocsp.r2m01.amazontrust.com
CRL Distribution Point: http://crl.r2m01.amazontrust.com/r2m01.crl

Check the revocation status for certificate cs50.io

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cs50.io

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

10 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

cs50.io
*.cs50.io

Other certificates including the domain name cs50.io

(limited to 100 certificates)
ap.cs50.school
ap.cs50.school
ap.cs50.school
*.legacy.cs50.io
ap.cs50.school
*.cs50.io
ap.cs50.school
ap.cs50.school
ap.cs50.school
ap.cs50.school
cs50.io
cs50.net
cs50.io
*.cs50.io
cs50.net
cs50.io
ap.cs50.school
ap.cs50.school
ap.cs50.school
ap.cs50.school
cs50.io
ide.cs50.io
ap.cs50.school
ap.cs50.school
ap.cs50.school
ap.cs50.school
cs50.io
cs50.dev
*.legacy.cs50.io
ap.cs50.school
cs50.net
*.cs50.io
ap.cs50.school
cs50.io
*.legacy.cs50.io
cs50.net
cs50.io
ap.cs50.school
*.legacy.cs50.io
cs50.net
ap.cs50.school
ap.cs50.school
cs50.io
cs50.io
ap.cs50.school
*.legacy.cs50.io
cs50.dev

Certificate

The complete raw certificate details for cs50.io in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmbasSF2L57txLlODflL5
ARIRcIhu0fjGgL2QmTveDiBywrjTbgbIVWGNQhyYKGJqL4JaZdyV0kfxbxGUwJl+
mnpqEzWaQsB+MJw6ZcQavbzD90v/v8oaUO3mdAYrSDDF+CXkMPCg6LZ5P2RrfcHd
oM2SxKDnxdaObwQRbUrLtevAV7+J3upu7F8Agq+zXjaKDR/ANCNI307fRjaaIeMr
dsttkvjI9pnbqmhRUoQ2G9OtPA2HoE06da1iQQVeBZUaJurtrq32soP0qjPTGXVJ
ITMpk8NrfSOHNqDHgLLFb515Z+8xpnRMRFUcRuWgvMX2+Y2XyHmu/b5pItF31HOb
ewIDAQAB
-----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 5075320177050603528709309922058107714
 . . . . . . . . [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 'Amazon'
 . . . . . . . . . . . . [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 'Amazon RSA 2048 M01'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-02-24 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-22 23:59:59 +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 'cs50.io'
 . . . . . . . . [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 19404540063160078938775869914985370139540293176448631241453345810014380146795498429357280028469553038917683993002833423136910384588300165391482777626107822290612896020516218532450873414541774597510807663620291954172388969359849974787480910942430349666151464812947395423320620216716779147049933190119260214291723084371257522623313791117873252539587116682716585464164779545576268502721683598693818597085994270363315187593375259433085740969688626508076675757865942786046588075611924533795067971929889464547263101855159690533984349523482215485774609843961229511876946217095206508283873910980031836875185682426842901093243
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 81b80e638a891218e5fa3b3b50959fe6e5901385
 . . . . . . . . . . . . . . . . [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)
							03b2e513fd9eaf0652975479cbd3c31139e4ca91
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cs50.io'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cs50.io'
 . . . . . . . . . . . . . . . . [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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.r2m01.amazontrust.com/r2m01.crl'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (105 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.r2m01.amazontrust.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://crt.r2m01.amazontrust.com/r2m01.cer'
 . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (366 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (362 bytes)
							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
 . . . . [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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