RSA (Rivest-Shamir-Adleman) is the most widely deployed asymmetric cryptographic algorithm, used for digital signatures, key exchange, and encryption. This skill covers generating, storing, rotating,
RSA (Rivest-Shamir-Adleman) is the most widely deployed asymmetric cryptographic algorithm, used for digital signatures, key exchange, and encryption. This skill covers generating, storing, rotating, and managing RSA key pairs following NIST SP 800-57 key management guidelines, including key serialization formats (PEM, DER, PKCS#8), passphrase protection, and key strength validation.
| Key Size (bits) | Security Strength (bits) | Recommended Until |
|---|---|---|
| 2048 | 112 | 2030 |
| 3072 | 128 | Beyond 2030 |
| 4096 | ~140 | Beyond 2030 |
| Scheme | Use Case | Standard |
|---|---|---|
| OAEP | Encryption | PKCS#1 v2.2 (RFC 8017) |
| PSS | Signatures | PKCS#1 v2.2 (RFC 8017) |
| PKCS#1 v1.5 | Legacy only | Deprecated for new systems |