What does encrypting mean?
Encrypting is the process of transforming readable information — text, files, messages, or entire drives — into an unreadable form so that only someone holding the correct key can restore it. The word is the present participle of the verb 'encrypt,' which entered English in the mid-twentieth century from the Greek root kryptos, meaning hidden. Today encrypting is central to digital life: it secures online banking, protects private conversations on messaging apps, shields stored passwords, and underpins virtually all e-commerce. The term carries a connotation of deliberate protection rather than mere concealment, since modern encryption relies on published mathematical algorithms whose strength lies in the secrecy of the key, not the method. Though technical in register, the word has become familiar to general audiences thanks to privacy features advertised directly to consumers. Understanding encrypting means understanding the basic mechanism by which the modern internet keeps secrets safe from interception and theft.
verbEncrypting is the act of converting information into a coded form to prevent unauthorized access, typically using an algorithm and a key. As the present participle of 'encrypt,' it describes this process as ongoing or as a verbal noun.
- The ongoing action of converting plaintext into ciphertext using a cryptographic algorithm and key, so that only authorized parties can read it.
- As a gerund, the practice or technique of securing data through cryptographic transformation.
"The messaging app keeps encrypting every conversation by default, so even its own servers cannot read your messages."
"The bank is encrypting all customer transactions before they travel across the internet."
"Encrypting your laptop's hard drive ensures that a stolen device reveals nothing to the thief."
Every time you send a message marked with a padlock icon, some server somewhere is encrypting it in real time — turning your words into noise that only one person on Earth can unscramble.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of encrypting
The verb 'encrypt' was formed in English during the mid-twentieth century, combining the prefix en- with the Greek root kryptos, meaning 'hidden' or 'concealed.' That same root gives us crypt, cryptic, cryptography, and apocryphal. While hiding messages is ancient — Julius Caesar famously shifted letters in his correspondence — the specific verb 'encrypt' arose alongside modern cryptographic science, particularly during and after the Second World War, when mechanical and then electronic cipher machines made systematic data scrambling routine.
Related word forms
How encrypting is actually used
The word is technical but increasingly common in everyday contexts due to consumer privacy tools. 'Encrypting' functions both as a progressive verb form ('the system is encrypting files') and as a gerund ('encrypting protects privacy'). In casual speech people often use 'locking' or say a message is 'encrypted' rather than describing the act.
Easily confused with encrypting
Encoding merely converts data into another format for transmission or storage and is easily reversible by anyone with the scheme, whereas encrypting deliberately renders data unreadable without a secret key.