RSAEC

RSAEC is a term that appears in some security products and documentation to refer to cryptographic techniques that involve both RSA and elliptic-curve cryptography. There is no formal standard named RSAEC in major standards bodies, and the exact formulation of RSAEC varies across implementations.

Typically, RSAEC is used to describe a hybrid approach in which RSA and ECC are employed within the same protocol or system to achieve different roles, such as key encapsulation, digital signatures, or key agreement. Because there is no single specification, the specific operations, padding schemes for RSA, and the choice of elliptic curves differ between products or protocols.

Security and performance implications depend on the concrete construction. RSA with common padding (OAEP, PKCS#1 v2.1) and ECC with chosen curves are subject to separate sets of best practices. Interoperability challenges can arise when different RSAEC flavors are used, making careful assessment essential when integrating systems.

In summary, RSAEC is not a standardized algorithm and should be understood as a non-standard label used in specific environments to describe RSA and ECC coexisting or being used in a hybrid fashion. See also RSA, ECC, RSA-OAEP, ECDSA, ECDH.

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