The default cacerts.txt that comes with httplib2 contains these certificates:
- Verisign/RSA Secure Server CA
- Thawte Personal Basic CA
- Thawte Personal Premium CA
- Thawte Personal Freemail CA
- Thawte Server CA
- Thawte Premium Server CA
- Equifax Secure CA
- Verisign Class 1 Public Primary Certification Authority
- Verisign Class 2 Public Primary Certification Authority
- Verisign Class 3 Public Primary Certification Authority
- Verisign Class 1 Public Primary Certification Authority - G2
- Verisign Class 2 Public Primary Certification Authority - G2
- Verisign Class 3 Public Primary Certification Authority - G2
- Verisign Class 4 Public Primary Certification Authority - G2
- Verisign Class 1 Public Primary Certification Authority - G3
- Verisign Class 2 Public Primary Certification Authority - G3
- Verisign Class 3 Public Primary Certification Authority - G3
- Verisign Class 4 Public Primary Certification Authority - G3
- Equifax Secure Global eBusiness CA
- Equifax Secure eBusiness CA 1
- Equifax Secure eBusiness CA 2
- Thawte Time Stamping CA
- thawte Primary Root CA
- VeriSign Class 3 Public Primary Certification Authority - G5
- Entrust.net Secure Server Certification Authority
- Go Daddy Certification Authority Root Certificate Bundle
The instagram HTTPS certificate is signed by:
You will need to add the certificate to your cacerts.txt