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What requirement must a public key cryptosystems fulfill to be a secure algorithm?
1. It is computationally easy for a party B to generate a pair(Public key KUb, Private
key KRb)
2. It is computationally easy for a sender A, knowing the public key and the message
to be encrypted , M, to generate the corresponding ciphertext:
C=EKUb(M)
3. It is computationally easy for the receiver B to decrypt the resulting ciphertext
using the private key to recover the original message :
M=DKRb(C)=DKRb[EKUb(M)]
4. It is computationally infeasible for an opponent , knowing the public key,KUb,to
determine the private key,KRb.
5. It is computationally infeasible for an opponent , knowing the public key,KUb,
and a ciphertext, C, to recover the original message,M.
6. The encryption and decryption functions can be applied in either order:
M=EKUb[DKRb(M)]=DKUb [EKRb(M)]
What else can I help you with?
What are three broad categories of applications of public-key cryptosystems?
Encryption/decryption, Digital signature and Key exchange
Is knapsack algorithm is a public key encryption algorithm?
yes
What is the best public-key cryptography algorithm and why?
RSA (Rivest, Shamir, and Adelman) is the best public key algorithm.
Why should the encryption algorithm be made public?
To help people find the weakness of the algorithm
What requirements must a public key cryptosystems fulfill to be a secure algorithm?
1. It is computationally easy for a party B to generate a pair(Public key KUb, Private key KRb) 2. It is computationally easy for a sender A, knowing the public key and the message to be encrypted , M, to generate the corresponding ciphertext: C=EKUb(M) 3. It is computationally easy for the receiver B to decrypt the resulting ciphertext using the private key to recover the original message : M=DKRb(C)=DKRb[EKUb(M)] 4. It is computationally infeasible for an opponent , knowing the public key,KUb,to determine the private key,KRb. 5. It is computationally infeasible for an opponent , knowing the public key,KUb, and a ciphertext, C, to recover the original message,M. 6. The encryption and decryption functions can be applied in either order: M=EKUb[DKRb(M)]=DKUb [EKRb(M)]
Which encryption algorithm is commonly used as a public key cipher?
Type your answer here... RSA
What is the purpose the reserve requirement?
It protects public deposits.
What are the meeting requirement for the proprietary company?
If by "proprietary company" you are referring to a non-public, non-stock issuing. privately owned business, - - there is no legal requirement that such a company hold public meetings.
What are three broad categories of applications of public-key cryptosystems explain?
Public-key cryptosystems can be broadly categorized into three applications: encryption, digital signatures, and key exchange. Encryption: They enable secure communication by allowing users to encrypt messages with a recipient's public key, ensuring that only the recipient can decrypt it with their private key. Digital Signatures: Public-key systems facilitate the creation of digital signatures, which verify the authenticity and integrity of a message or document, ensuring that it has not been altered and confirming the identity of the sender. Key Exchange: They support secure key exchange mechanisms, allowing two parties to securely establish a shared secret key over an insecure channel, often utilizing algorithms like Diffie-Hellman.
What are the difference between DES and RSA algorithm?
DES is a symmetric cryptographic algorithm, while RSA is an asymmetric (or public key) cryptographic algorithm. Encryption and decryption is done with a single key in DES, while you use separate keys (public and private keys) in RSA. DES uses 56-bit keys for encryption while RSA uses 2600-bits of KEY
The requirement of companies to provide full information about their products?
public policy
What is the public announcement requirement for micro-purchases?
No formal annoncement is required.
