void setTrustedCertificatesSync(String file, {String password})

Sets the set of trusted X509 certificates used by SecureSocket client connections, when connecting to a secure server.

file is the path to a PEM or PKCS12 file containing X509 certificates, usually root certificates from certificate authorities. For PKCS12 files, password is the password for the file. For PEM files, password is ignored.

Source

void setTrustedCertificatesSync(String file, {String password});