PKCS1

PKCS1

In cryptography, PKCS #1 is the first of a family of standards called Public-Key Cryptography Standards (PKCS), published by RSA Laboratories. It provides the basic definitions of and recommendations for implementing the RSA algorithm for public-key cryptography. It defines the mathematical properties of public and private keys, primitive operations for encryption and signatures, secure cryptographic schemes, and related ASN.1 syntax representations.

The current version, 2.1, was published in June 2002, and was also republished as RFC 3447 in February 2003.

Read more about PKCS1:  Keys, Primitives, Schemes, Version History