The term "cryptanalyzing" refers to the process of decoding a secret message or code. Antonyms for this word could include "encrypting," which means to create a secret message or code, or "encoding," which means to convert a message into a code. Other antonyms for "cryptanalyzing" could include "obfuscating," which means to make something unclear or confusing, or "perturbing," which means to cause confusion or anxiety. Additionally, "protecting" or "safeguarding" could be considered antonyms of "cryptanalyzing," as these words focus on keeping information secure rather than breaking into it.