The two broadly classified types of cryptography are symmetric-key cryptography and asymmetric-key cryptography. Symmetric key cryptography, also known as secret key cryptography, uses the same key for data encryption and decryption. Both the sender and the receiver must have the same key, which is kept confidential between them. This type of cryptography is efficient and fast but requires a secure method for key distribution.

The main types of cryptography include symmetric key cryptography and asymmetric key cryptography.

Symmetric key cryptography involves using a single key for encryption and decryption, making it effective for encrypting bulk data. Asymmetric key cryptography, also known as public key cryptography, uses a pair of keys: a public key for encryption and a private key for decryption. This allows secure communication without requiring an initial secure exchange of keys.

The two main types of encryption are symmetric encryption and asymmetric encryption. Symmetric encryption uses a single key to encrypt and decrypt data.

Examples include AES (Advanced Encryption Standard) and DES (Data Encryption Standard). Asymmetric encryption, on the other hand, uses a pair of keys: a public key for encryption and a private key for decryption. Examples include RSA (Rivest-Shamir-Adleman) and ECC (elliptic curve cryptography).

Symmetric key cryptography and asymmetric key cryptography are considered the two basic types of cryptography. Symmetric key cryptography relies on a secret key shared between the communicating parties, ensuring data confidentiality and integrity.

Asymmetric key cryptography, on the other hand, uses a pair of keys, allowing secure communication over insecure channels and enabling features such as digital signatures and key exchange protocols.

The two types of cryptographic algorithms are symmetric algorithms and asymmetric algorithms. Symmetric algorithms, such as AES and DES, use a single key for encryption and decryption operations. They are efficient and well suited for bulk data encryption. Asymmetric algorithms, such as RSA and ECC, use a pair of keys: a public key for encryption and a private key for decryption.

They are essential for secure key exchange, digital signatures and secure communication over untrusted networks