All types of lettuce have roughly the same number of calories. Whether you prefer red leaf, green leaf, iceberg, romaine or Bibb lettuce, youâll get a similar number of calories. A 3-ounce portion of any of these types of lettuce, which amounts to 85 grams by weight, provides between 10 and 15 total calories.
A cryptographer is one who practices or studies cryptography, a field primarily involved with keeping secret information secret. Modern cryptography is mostly concerned with encrypting digital information, such as e-mail, to protect it as it's sent from one digital source to another.
For an overview of cryptographic technology in general, see Cryptography. In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it. Encryption does not of itself prevent interference, but denies the intelligible content to a would-be interceptor.