Abstract:
Method of integrity verification of cryptographic key pairs, the method including an integrity test with: at least one first step implementing one of the private and public keys and an initial test datum, the first step making it possible to generate a first result, at least one second step implementing at least the first result and the key not used during the at least one first step, the second step making it possible to generate a second result, and a comparison of the second result and of the initial test datum, characterized in that the test is re-executed upon each positive comparison, and in that the test is executed at least 2 times.
Abstract:
Generation of a message m of order λ(n) for a test of the integrity of the generation of a pair of cryptographic keys within the multiplicative group of integers modulo n=p·q, including: —key pair generation including, to generate p and q: a random selection of candidate integers; and a primality test; —a first search of the multiplicative group of integers modulo p for a generator a; —a second search of the multiplicative group of integers modulo q for a generator b; —a third search for a number y, as message m, verifying: 1≦γ≦n−1, where γ=a mod p and γ=b mod q, the first or second search being performed during the primality test.
Abstract translation:生成订单λ(n)的消息m,用于测试在模n = p·q的乘法乘法组中产生一对加密密钥的完整性,包括: - 密钥对生成包括生成p 和q:候选整数的随机选择; 和原始测试; - 对于生成器a首先搜索模p的乘法乘法组; - 对发生器b进行模q的乘法乘积组的第二次搜索; - 第三次搜索数字y作为消息m,验证:1≤γ≤n-1,其中γ= a mod p和γ= b mod q,在原语测试期间执行第一或第二搜索。
Abstract:
Method of integrity verification of public and private cryptographic key pairs in the additive group of integers modulo n, with n being the product of two prime numbers p and q, the method including the following steps: of computation (201), on the basis of the number n, of a public exponent e of the public key, and of a private exponent d of the private key, of two candidate factors p′ and q′ corresponding respectively to the numbers p and q, of verification (206) so as to verify the consistency of the private exponent with respect to the public exponent and to the number n, the verification step involving the candidate factors.
Abstract:
A method for determining the presence of a human being, comprising: measuring (S6) a movement (MOV) of a first device (4) by a sensor (44) of said first device (4), determining the presence of a human being on the basis of the measured movement (MOV).
Abstract:
Intrusion detection systems dedicated to an operating system, and an intrusion detection system in a device implementing at least a first operating system and a second operating system. The intrusion detection systems includes: a listening module (1110) configured to be executed in the first operating system in order to listen to the activity of this first operating system; a collecting module (1120) configured to be executed in the first operating system in order to collect data characterizing the activity of the first operating system; and an analysis and detection module (1150) configured to be executed in the second operating system in order to analyze the data collected in the first operating system and detect a suspicious activity in the first operating system depending on the analysis.