The word "cryptography" is correct and usable in written English.
You can use it to refer to methods of protection used to keep communications or data safe and secure, such as encryption. For example, "We use cryptography to ensure the security of our customer data."
Snowden has documented their efforts to break our cryptography.
Snowden has disclosed that their advances on our fundamental cryptography were good but not excellent.
He is also showing us that we have very little time to improve our own cryptography.
They have not yet gained enough technical sophistication to break the fundamental cryptography holding the global economy together.
To take the job as head of such an agency is a logical choice for Guillaume Poupard, a man passionate about "mathematics as applied to concrete problems", with a doctorate in cryptography.
As Matthew Green, a cryptography researcher at Johns Hopkins University, puts it, "nobody knows all the features, let alone all the bugs".The heartening news is that all four were first spotted by security experts, not the bad guys.
Bitcoin, a digital currency made possible by clever cryptography, has lost its lustre as its price has tumbled from over $1,100 in late 2013 to $225 now.
What is the guarantee that a rival spy agency, a criminal gang, or even a bright teenager will not find and use one of these "backdoors"?One way to make such a flaw safer, says Matthew Green, of Johns Hopkins university in Maryland, is public-key cryptography.
Earlier leaks suggested that the NSA has weakened commercial cryptography to make spying easier.
After having read your article on cryptography (August 28th), I now understand that you are engaged in some sort of steganographic communication with your more astute readers.
Her slight tweaks have compensated for the disturbances she creates.Neither of these techniques actually breaks the fundamental principles on which quantum cryptography is based.
