Only signing schemes are settable on TPMS_RSA_PARMS

Lines 204 to 210 in d331077

    
           type RSAParams struct { 
        
           	Symmetric   *SymScheme 
        
           	Sign        *SigScheme 
        
           	KeyBits     uint16 
        
           	ExponentRaw uint32 
        
           	ModulusRaw  tpmutil.U16Bytes 
        
           }

Instead of Sign *SigScheme, we should have something that reflects TPMT_RSA_SCHEME (which can be a signing or decryption scheme).

	type RSAParams struct {
	Symmetric *SymScheme
	Sign *SigScheme
	KeyBits uint16
	ExponentRaw uint32
	ModulusRaw tpmutil.U16Bytes
	}