Generation of Card Security Codes
CVC1, CVV1, CVC2 and CVV2 values are generated when the card is issued. The values are calculated by encrypting the bank card number (also known as the primary account number or PAN), expiration date and service code with encryption keys (often called Card Verification Key or CVK) known only to the issuing bank, and decimalising the result.
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—Henry David Thoreau (1817–1862)
“Our Indian said that he was a doctor, and could tell me some medicinal use for every plant I could show him ... proving himself as good as his word. According to his account, he had acquired such knowledge in his youth from a wise old Indian with whom he associated, and he lamented that the present generation of Indians “had lost a great deal.””
—Henry David Thoreau (1817–1862)
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—Mason Cooley (b. 1927)
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—Ralph Waldo Emerson (1803–1882)