## What is RSA OAEP?

RSAES-OAEP is a public-key encryption scheme combining the RSA algorithm with theOptimal Asymmetric Encryption Padding(OAEP) method. The inventors of RSA are Ronald L.Rivest, Adi Shamir, and Leonard Adleman, while the inventors of OAEP are Mihir Bellare andPhillip Rogaway, with enhancements by Don B. Johnson and Stephen M. Matyas.

**What is \\Ceil in RSA cryptography?**

RFC 3447 PKCS #1: RSA Cryptography Specifications February 2003 \\ceil (.) ceiling function; \\ceil (x) is the smallest integer larger than or equal to the real number x || concatenation operator == congruence symbol; a == b (mod n) means that the integer n divides the integer a – b Note.

### What is the RSA private exponent?

The RSA private exponent d is a positive integer less than n satisfying e * d == 1 (mod \\lambda (n)), where e is the corresponding RSA public exponent and \\lambda (n) is defined as in Section 3.1 .

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