EC_R_RANDOM_NUMBER_GENERATION_FAILED:158:random number generation failed
EC_R_SHARED_INFO_ERROR:150:shared info error
EC_R_SLOT_FULL:108:slot full
+EC_R_TOO_MANY_RETRIES:176:too many retries
EC_R_UNDEFINED_GENERATOR:113:undefined generator
EC_R_UNDEFINED_ORDER:128:undefined order
EC_R_UNKNOWN_COFACTOR:164:unknown cofactor