Arrange these events in the correct order for encrypting and then decrypting data with a symmetric cipher: (1) The authorized recipient applies the key to reverse the transformation. (2) Readable plaintext is provided. (3) The cipher and key transform the plaintext into ciphertext.
Answer
Readable plaintext is provided., The cipher and key transform the plaintext into ciphertext., The authorized recipient applies the key to reverse the transformation.
Explanation
### The order
1. **Readable plaintext is provided**: encryption begins with data in its readable form.
2. **The cipher and key transform the plaintext into ciphertext**: this is the encryption step.
3. **The authorized recipient applies the key to reverse the transformation**: symmetric decryption uses the same key to recover the data.
### Terms
- **Decryption**: reversing encryption to recover readable data.
### Remember
Input plaintext, encrypt to ciphertext, then decrypt to recover plaintext.
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