The hash algorithm in the SAML library is fixed to SHA1.

[daisukenishino2]

SAML2Client.CreateRedirectRequest
https://github.com/OpenTouryoProject/OpenTouryo/blob/develop/root/programs/CS/Frameworks/Infrastructure/Framework/Authentication/SAML2Client.cs#L64
SAML2Client.VerifyResponse
https://github.com/OpenTouryoProject/OpenTouryo/blob/develop/root/programs/CS/Frameworks/Infrastructure/Framework/Authentication/SAML2Client.cs#L180

[daisukenishino2]

Related Implementations

CmnEndpoints.VerifySamlRequest
https://github.com/OpenTouryoProject/MultiPurposeAuthSite/blob/develop/root/programs/CommonLibrary/SamlProviders/CmnEndpoints.cs#L100
CmnEndpoints.CreateSamlResponse
https://github.com/OpenTouryoProject/MultiPurposeAuthSite/blob/develop/root/programs/CommonLibrary/SamlProviders/CmnEndpoints.cs#L163