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It depends on how you apply the term "secret key encryption". In one sense "Secret key encryption" refers to using symmetric keys - both parties have the key and must keep it secret in order to protect the confidentiality of the communication. Usually the process that was used to encrypt the original message can be decrypted by repeating the encryption process with the original secret key. This should provide for confidentiality, non-repudiation, and validation since only the holders of the shared secret key should be able to successfully encrypt and decrypt the messages.
In contrast to the symmetric key encryption, Public Key encryption uses two keys in the encryption/decryption process. Anything encrypted with one key can be decrypted with the other key. The "public key" is published for everyone to access. The "private key" is kept by the owner and not made available to the world. The encryption of the original message using one key can be "undone" only by using the other key. Using the public key on a message already encrypted with the public key only results in an even more jumbled and unintelligible mess. The end result is that is someone encrypts a message with their private key, only their public key can be used to decrypt it, thus verifying the source of the message. Any message encrypted using the public key can only be decrypted with the private key, thus providing confidentiality. If two users want to use asymmetric encryption to communicate securely, they can do it this way:
Alice encrypts a message to Bob using Bob's public key. Only Bob can decrypt it and read it (using his private key). He can then send a return email to Alice using Alice's public key that only Alice can decrypt and read (using her own private key). If they wish, they can use this method to agree upon and exchange a shared symmetric key than can be used for further secure communications. Several automatic secure protocols use exactly this method or a variation of it.
The alternate meaning is to make "secret key" synonymous with the "private key" of asymmetric encryption. In this case there is really no difference between secret key and public key encryption except for which key of the public/private key pair is being used and who can read it.
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What is the difference between Private key cryptography and public key cryptography?
Public key encryption refers to a type of cypher or code architecture known as public key cryptography that utilizes two keys, or a key pair), to encrypt and decrypt data. One of the two keys is a public key, which anyone can use to encrypt a message for the owner of that key. The encrypted message is sent and the recipient uses his or her private key to decrypt it. This is the basis of public and private key encryption.
What are the differences between conventional and public key algorithms?
In cryptography, public key algorithms require two keys, one secret and one public. The public key is used in the encryption function, while the secret key is used in decryption . Conventional, or symmetric algorithms use a single key for both purposes.
What is the difference between private key and secret key as applied to coding theory and cryptology?
"Private key" in the context of cryptography refers to the the key generated for an asymmetric encryption algorithm which is retained by the owner while the companion "public key" is published for others to utilize for secure communications or authentication. The "private key" is not shared with anyone. A "secret key" in the context of cryptography refers to the single key generated for use in a symmetric encryption algorithm which is only shared between those between whom secure communication is desired. It is kept secret from all others. The secret key must be transmitted to or shared with all parties by a method outside the communications link it is intended to secure.
What is the meaning of asymmetric encryption?
Asymmetric Encryption is a form of Encryption where keys come in pairs. What one key encrypts, only the other can decrypt. Frequently (but not necessarily), the keys are interchangeable, in the sense that if key A encrypts a message, then B can decrypt it, and if key B encrypts a message, then key A can decrypt it. While common, this property is not essential to asymmetric encryption. Asymmetric Encryption is also known as Public Key Cryptography, since users typically create a matching key pair, and make one public while keeping the other secret. Users can "sign" messages by encrypting them with their private keys. This is effective since any message recipient can verify that the user's public key can decrypt the message, and thus prove that the user's secret key was used to encrypt it. If the user's secret key is, in fact, secret, then it follows that the user, and not some impostor, really sent the message. Users can send secret messages by encrypting a message with the recipient's public key. In this case, only the intended recipient can decrypt the message, since only that user should have access to the required secret key. The key to successful use of Asymmetric Encryption is a Key Management system, which implements a Public Key Infrastructure. Without this, it is difficult to establish the reliability of public keys, or even to conveniently find suitable ones.
Can you do encryption without a shared secret or a previous exchange of public key OR how to trust the 1st exchange?
Yes, encryption can be performed without a shared secret or a previous exchange of public keys through the use of asymmetric encryption or public key infrastructure (PKI). In this system, each party has a pair of keys: a public key, which can be shared openly, and a private key, which is kept secret. To trust the first exchange, digital certificates issued by a trusted certificate authority (CA) can be used to verify the authenticity of public keys, ensuring that the keys belong to the claimed entities. This mechanism helps establish trust without prior key exchanges.
What is the flexibility of public key cryptography?
The flexibility of public key cryptography is in the fact that the key has two parts one is public and other is kept secret. That is encryption is done using public key while decryption is done using secret key. Thus message cannot be decrypted by unwanted person.
What is the difference between a spy and secret agent?
There is no difference.
What is difference between enable secret and enable password?
the difference between the Enable Secret and the Enable password and that the Enable Secret password supersedes the Enable password if it's set.
Asymmetric encryption involves?
The asymmetric key algorithms are used to create a mathematically related key pair: a secret private keyand a published public key.
Symmetric encryption involves?
A shared secret key.
Where encryption done?
If we want to transmit the most secret data, we can use encryption process and transmit the data to the receiver. this process is called as encryption. regds nataraj
What is the difference between username and a password?
Username is the public name that you are known by. Password is a secret alphanumeric that only you know and use to gain access to a software programme, user account, web site etc.
