Sensitivity
With DSA, the entropy, secrecy and uniqueness of the random signature value k is critical. It is so critical that violating any one of those three requirements can reveal your entire private key to an attacker. Using the same value twice (even while keeping k secret), using a predictable value, or leaking even a few bits of k in each of several signatures, is enough to break DSA.
Read more about this topic: Digital Signature Algorithm
Famous quotes containing the word sensitivity:
“...some small boys came out of the city and jeered at him, saying, “Go away, baldhead! Go away, baldhead!””
—Bible: Hebrew, 2 Kings 2:23.
Elisha--proving that baldness has been a source of sensitivity for centuries, Elisha cursed them and they died.
“The sensitivity of men to small matters, and their indifference to great ones, indicates a strange inversion.”
—Blaise Pascal (1623–1662)
“Freedom of choice for women, at the expense of the caring, warmth, and sensitivity to others so often associated with them, may be empty. In the thrust to redefine male and female roles, women must not become men; nor can men be permitted the continual dehumanization of their roles.”
—Kathleen Weibel (b. 1945)