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The PKCS #1 standard defines the mathematical definitions and properties that RSA public and private keys must have. The traditional key pair is based on a modulus, n , that is the product of two distinct large prime numbers , p and q , such that n = p q {\displaystyle n=pq} .
PKCS Standards Summary; Version Name Comments PKCS #1: 2.2: RSA Cryptography Standard [1]: See RFC 8017. Defines the mathematical properties and format of RSA public and private keys (ASN.1-encoded in clear-text), and the basic algorithms and encoding/padding schemes for performing RSA encryption, decryption, and producing and verifying signatures.
The PKCS#1 standard also incorporates processing schemes designed to provide additional security for RSA signatures, e.g. the Probabilistic Signature Scheme for RSA . Secure padding schemes such as RSA-PSS are as essential for the security of message signing as they are for message encryption.
In cryptography, Optimal Asymmetric Encryption Padding (OAEP) is a padding scheme often used together with RSA encryption.OAEP was introduced by Bellare and Rogaway, [1] and subsequently standardized in PKCS#1 v2 and RFC 2437.
1) Alice signs a message with her private key. 2) Using Alice's public key, Bob can verify that Alice sent the message and that the message has not been modified. In the Diffie–Hellman key exchange scheme, each party generates a public/private key pair and distributes the public key of the pair. After obtaining an authentic (n.b., this is ...
IFSSA (Integer Factorization Signature Scheme with Appendix): Includes two variants of RSA, Rabin-Williams, and ESIGN, with several message encoding methods. "RSA1 with EMSA3" is essentially PKCS#1 v1.5 RSA signature; "RSA1 with EMSA4 encoding" is essentially RSA-PSS; "RSA1 with EMSA2 encoding" is essentially ANSI X9.31 RSA signature.
The following PKCS standards: PKCS #1. RSA standard that governs implementation of public-key cryptography based on the RSA algorithm. PKCS #3. RSA standard that governs implementation of Diffie–Hellman key agreement. PKCS #5. RSA standard that governs password-based cryptography, for example to encrypt private keys for storage. PKCS #7.
Compared to Bleichenbacher's attack on RSA with PKCS #1 v1.5, Vaudenay's attack on CBC is much more efficient. [1] Both attacks target crypto systems commonly used for the time: CBC is the original mode used in Secure Sockets Layer (SSL) and had continued to be supported in TLS. [4]
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