Securing information by converting plaintext to ciphertext using algorithms and keys

Which is a goal of cryptography?

Confidentiality, integrity, authentication, non-repudiation

2071 Shrawan · 2 marks

What is cryptography

Short answer

Cryptography is the science of converting plaintext into ciphertext using algorithms and keys to provide confidentiality, integrity, authentication, and non-repudiation. Main kinds are symmetric-key, public-key, and hash functions. Encryption is the forward conversion; decryption is the reverse.

What is cryptography?

Cryptography is the science and art of securing information by converting readable data (plaintext) into an unreadable form (ciphertext) using mathematical algorithms and keys, so only authorised parties can read or verify it. Its goals are confidentiality, integrity, authentication and non-repudiation.

Main kinds: symmetric-key cryptography (AES), public-key cryptography (RSA) and hash functions (SHA). The process of converting plaintext to ciphertext is encryption, and the reverse is decryption.

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