RSA Key Length

Definition ∞ RSA key length specifies the number of bits used in the modulus of an RSA public-key cryptographic system, directly correlating with its security strength. Longer key lengths increase the computational difficulty for an attacker to factor the modulus and break the encryption. Common lengths include 2048-bit and 4096-bit keys, with recommendations periodically updated to account for advances in computing power. This parameter is critical for protecting digital communications.
Context ∞ RSA key length is a standard topic in cybersecurity discussions, including those relevant to digital asset security and data protection. News related to cryptographic standards often highlights the need to increase key lengths to counter improvements in factorization algorithms and the distant threat of quantum computing. Ensuring adequate key length is essential for maintaining the long-term security of systems reliant on RSA encryption.