Jun 18, 2013 · One of the core decisions in this field is the key size. Most people have heard that 1024 bit RSA keys have been cracked and are not used any more for web sites or PGP. The next most fashionable number after 1024 appears to be 2048, but a lot of people have also been skipping that and moving to 4096 bit keys.
Mar 15, 2017 · Release Download RSA SecurID Software Token 5.0.2 for Microsoft Windows (64-bit) SHA256: Mar 09, 2010 · 1024-bit RSA encryption cracked by carefully starving CPU of electricity. Latest in Crack Motorola designed a phone screen that repairs itself 08.16.17 View 'Rime' goes DRM-free after hackers 1024-bit RSA (RSA_1024) 2048-bit RSA (RSA_2048) 4096-bit RSA (RSA_ 4096) Elliptic Prime Curve 256 bit (EC_prime256v1 Oct 19, 2017 · When encryption standards progressed to 1024-bit, the Lenstra group estimated that factoring the 1024-bit modulus would take about 1,000 times as long as it would to break the previous 786-bit modulus. But further progress to a larger 2048-bit encryption has made factorization even harder.
sign verify sign/s verify/s rsa 1024 bits 0.000273s 0.000017s 3662.2 59513.0 rsa 2048 bits 0.001994s 0.000052s 501.5 19254.5 rsa 4096 bits 0.014438s 0.000219s 69.3 4560.3 So by doubling the key length, the time to sign a message increases by 7x, and the time to verify a signature increases by more than 3x.
Mar 09, 2010 · 1024-bit RSA encryption cracked by carefully starving CPU of electricity. Latest in Crack Motorola designed a phone screen that repairs itself 08.16.17 View 'Rime' goes DRM-free after hackers 1024-bit RSA (RSA_1024) 2048-bit RSA (RSA_2048) 4096-bit RSA (RSA_ 4096) Elliptic Prime Curve 256 bit (EC_prime256v1
sign verify sign/s verify/s rsa 1024 bits 0.000273s 0.000017s 3662.2 59513.0 rsa 2048 bits 0.001994s 0.000052s 501.5 19254.5 rsa 4096 bits 0.014438s 0.000219s 69.3 4560.3 So by doubling the key length, the time to sign a message increases by 7x, and the time to verify a signature increases by more than 3x.
Currently with apache/mod_ssl, if DHE is enabled then a 1024-bit ephemeral key will be used. I found the following quote in Adam Langley's blog:. Ideally the DH group would match or exceed the RSA key size but 1024-bit DHE is arguably better than straight 2048-bit RSA so you can get away with that if you want to. The leak is significant enough for full recovery of RSA-1024 as well as 13% of RSA-2048 bit private keys. For the L3 Cache Side-Channel Attack to work the attacker has to be able to run arbitrary software on the hardware where the private RSA key is used. May 23, 2007 · The next target for Lenstra is factoring RSA 768-bit and eventually 1024-bit numbers. But even before those milestones are met, Web sites should be looking toward stronger encryption than RSA 1024 Of course, if you do choose two 512-bit primes, you'll end up with either a 1023-bit or a 1024-bit modulus; that's probably not worth worrying about, but if you really cared about getting exactly a 1024-bit modulus you could either restrict the range of p and q further, say to [1.5 * 2^511, 2^512], or just throw out any 1023-bit modulus and try