In asymmetric encryption, the keys are mathematically related but serve different purposes: one is a public key, which can be shared openly, and the other is a private key, which is kept secret. The encryption process uses the public key to encrypt data, while the decryption process requires the corresponding private key. This relationship ensures that only the holder of the private key can decrypt messages encrypted with the public key, providing a secure means of communication. The mathematical foundation typically involves complex algorithms based on number theory, such as RSA or elliptic curve cryptography.
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True. In asymmetric encryption, there are two keys: a public key and a private key, which are mathematically related. This relationship allows data encrypted with the public key to be decrypted only with the corresponding private key, ensuring secure communication. However, while they are related, it is computationally infeasible to derive one key from the other.
Smart cards typically use a combination of symmetric and asymmetric encryption. Common algorithms include AES (Advanced Encryption Standard) for symmetric encryption and RSA or ECC (Elliptic Curve Cryptography) for asymmetric encryption. These encryption methods help secure the data stored on the card and facilitate secure communication between the card and external systems. Additionally, smart cards often implement secure key management practices to protect sensitive cryptographic keys.
private and primary key
Cryptography is basically the process of hiding information in order to protect the sensitive information, data or message from unknown attacks for any reasons. Cryptography actually consists of two terms encryption and decryption. The process in which message is ciphered or encrypted is known as encryption and the process in which message is deciphered at recipients end is known as decryption. And this whole process is known as cryptography. Public keys and private keys are used in the process of cryptography. Cryptography can be seen as symmetric and asymmetric. In symmetric cryptography same key is used for both encryption and decryption while in asymmetric different keys are used for both encryption and decryption. Today Cryptography is used in various fields like ATM, e-banking, IT security, Maths etc.
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True. In asymmetric encryption, there are two keys: a public key and a private key, which are mathematically related. This relationship allows data encrypted with the public key to be decrypted only with the corresponding private key, ensuring secure communication. However, while they are related, it is computationally infeasible to derive one key from the other.
Yes. Public Key encryption (or asymmetric encryption) requires a pair of keys; a public and a private key for exchanging data in a secure manner.
PKI must use asymmetric encryption because it is managing the keys in many cases. This implies the use of public and private key pairs, which is asymmetric.
In asymmetric encryption, the keys are not mathematically related in a straightforward way; rather, they are generated as a pair consisting of a public key and a private key. The public key can be shared openly and is used for encryption, while the private key, which must be kept secret, is used for decryption. The relationship between the two keys is such that data encrypted with the public key can only be decrypted with the corresponding private key, ensuring security. However, the exact mathematical relationship is complex and relies on certain mathematical problems that are difficult to solve without the private key.
The asymmetric key algorithms are used to create a mathematically related key pair: a secret private keyand a published public key.