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On the Security of Multiple Encryption - Department of Computer
On the Security of. Multiple Encryption. Ralph C. Merkle. Elxsi, Int. Martin E. Hellman. Stanford University. Double encryption has been suggested to strengthen.

Chosen-Ciphertext Security of Multiple Encryption - NYU Computer
this intuition is false for all existing multiple encryption schemes. Here, in addition to formalizing the problem of chosen-ciphertext security for multiple encryption ...

On the Security of Multiple Encryption or CCA-security+CCA - IACR
Abstract. In a practical system, a message is often encrypted more than once by different encryptions, here called multiple encryption, to enhance its security.

On the Security of Multiple Encryption or CCA-security+CCA-security
Sep 20, 2003 ... Then we propose a generic construction of multiple encryption scheme achieving CCA security exactly. In emphasizing “natural” constructions'.

1 Security for Encrypting Multiple Messages
Encrypting Multiple Messages, Pseudorandom Functions ... Proposition 1 There is no secure encryption scheme in which Enc is deterministic and stateless. 1 ...

1 Introduction 2 Multiple-Message Security
CS 120/CSCI E-177: Introduction to Cryptography. Salil Vadhan and Alon Rosen. Oct. 31, 2006. Lecture Notes 12: Security for Multiple Messages and Active ...

Multi-Recipient Encryption Schemes - Security and Cryptography
whether the associated randomness re-using MRES is secure. The results and ... latter is replaced by a multi-recipient encryption algorithm. Key generation and ...

Public-key Encryption in a Multi-User Setting: Security Proofs and
single-user setting implies security in the multi-user setting as long as the former is ... Keywords: Encryption, public-key cryptosystems, El Gamal, Diffie-Hellman, ...

The Security of Multiple Encryption in the Ideal Cipher Model
Multiple encryption—the practice of composing a blockci- pher several ... security of ℓ-round multiple encryption is precisely exp(κ + min{κ(ℓ′ −. 2)/2), n(ℓ′ ...

Security for Multiple Encryptions - Stanford CS Theory
Feb 4, 2009 ... ous definition of security to a practical construction that may plausibly satisfy the ... security for multiple encryptions, we have to define what an ...

1 Indistinguishability for multiple encryptions - Department of
Sep 26, 2012 ... How do we define security for multiple messages? ... A private-key encryption scheme (Enc, Dec) with key length k and message length m is (s ...

On the security of multiple encryption
On the Security of. Multiple Encryption. Ralph C. Merkle. Elxsi, Int. Martin E. Hellman. Stanford University. Double encryption has been suggested to strengthen.

Cryptography - EECS at UC Berkeley - University of California
and there may be several errors and imprecisions. We use a definition of security against a chosen cyphertext attack (CCA-security) that is weaker than the ...

LES: Layered Encryption Security - TerpConnect - University of
LES: Layered Encryption Security ... data can be encrypted with different security schemes, in- .... provision for the use of multiple keys or multiple encryption.

role of multiple encryption in secure electronic transaction
In this research paper, the needs of multiple encryption technique in Secure Electronic ... Secure Electronic Transaction ; Data Security; Multiple Encryption. 1.

On Chosen Ciphertext Security of Multiple Encryptions
On Chosen Ciphertext Security of Multiple Encryptions. Oded Goldreich. Yoad Lustig. Moni Naory. Department of Computer Science. Weizmann Institute of ...

Multi-Instance Security and its Application to Password-Based
for mi security of encryption and support this claim by showing it implies other .... Figure 1: Notions of multi-instance security for encryption and their relations.

Lecture 4 1 Need for CCA Security - go here for webmail
security corresponding to the Chosen Ciphertext Attack (CCA). .... scheme is CCA -secure for multiple encryptions, it will hold for single message as well. For.

Multi-Key Searchable Encryption -
cannot directly apply their scheme to the multi-key setting by creating an .... Enc a symmetric-key semantically secure encryption with the same key as the ...

On Notions of Security for Deterministic Encryption, and Efficient
and chosen-ciphertext-attack (CCA) secure deterministic encryption schemes, as ... considered, and the authors designed several constructions meeting them.

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