NIST Security Strength Time Frames
Security Strength Time Frames of NIST SP 800-57 Part 1 Security Strength 80 112 128 192 256 applying processing applying processing through 2010 acceptable acceptable acceptable acceptable acceptable acceptable acceptable 2011 through2013 deprecated legacy use acceptable acceptable acceptable acceptable acceptable 2014 through 2030 disallowed legacy use acceptable acceptable acceptable acceptable acceptable 2031 and Beyond disallowed legacy use disallowed legacy use acceptable acceptable acceptable Symmetric Algorithms 2TDEA 3TDEA AES-128 AES-192 AES-256 FFC (e.g., DSA, D-H) L = 1024 N = 160 L = 2048 N = 224 L = 3072 N = 256 L = 7680 N = 384 L = 15360 N = 512 IFC (e.g., RSA) k = 1024 k = 2048 k = 3072 k = 7680 k = 15360 ECC (e.g.,ECDSA) f = 160-223 f = 224-255 f = 256-383 f = 384-511 f = 512+ Digital Signatures and hash-only applications SHA-1, SHA-224, SHA-256, SHA-384, SHA-5