← Back to context Comment by _jal 4 years ago Not POTS, but cell phones could have been E2E at least since cellular switched to digital. 2 comments _jal Reply gruez 4 years ago The first digital phones ran on 56 bit (symmetric?) encryption. They certainty weren't powerful enough to run public key cryptography at safe key sizes, which is needed for secure e2e. _jal 4 years ago Not at key sizes considered safe today, but 384 bit RSA was considered secure for some uses around then.The RSA-155 Challenge (512 bits) was not beaten until 1999.
gruez 4 years ago The first digital phones ran on 56 bit (symmetric?) encryption. They certainty weren't powerful enough to run public key cryptography at safe key sizes, which is needed for secure e2e. _jal 4 years ago Not at key sizes considered safe today, but 384 bit RSA was considered secure for some uses around then.The RSA-155 Challenge (512 bits) was not beaten until 1999.
_jal 4 years ago Not at key sizes considered safe today, but 384 bit RSA was considered secure for some uses around then.The RSA-155 Challenge (512 bits) was not beaten until 1999.
The first digital phones ran on 56 bit (symmetric?) encryption. They certainty weren't powerful enough to run public key cryptography at safe key sizes, which is needed for secure e2e.
Not at key sizes considered safe today, but 384 bit RSA was considered secure for some uses around then.
The RSA-155 Challenge (512 bits) was not beaten until 1999.