15.3 Limitations

The following are the limitations of BigInt_ModExp() API.

  1. DHE greater than 2048-bit is not supported.
  2. RSA signature verification greater than 2048-bit is done in software; 4096-bit takes 4 seconds per verification, assuming a typical public key of 2^16+1.
  3. RSA signature generation greater than 2048-bit is not supported.