Does SAML 2.0 with okta support Elliptic Curve Cryptography (ECC) Certificates

Our Service Provider has Elliptic Curve Cryptography (ECC) Certificate. The same certificate is imported in Okta. When we try to login with Okta, after providing credentials, we get error: “400 Bad Request Your request resulted in an error. Error encrypting SAML assertion”. When we replace the certificate with RSA, login works fine.
Can anyone please suggest if I am missing something or currently we do not have support for ECC with okta?