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Документ The development of the method of multifactor authentication based on hybrid cryptocode constructions on defective codes(2017) Yevseiev, S. P.; Kots, Hryhorii; Minukhin, Sergii; Korol, O. G.; Kholodkova, AnnaThe proposed security mechanisms in hybrid-crypto-code systems, based on Niederreiter and McEliece modified asymmetric crypto-code systems on flawed codes allow further use of the methods of strict two-factor authentication on OTP passwords (OTP based 2FA). To ensure the required security and efficiency in the multi-factor authentication protocol, the McEliece and Niederreiter modified asymmetric crypto-code systems, allowing integrated reliability provision in information transmission on the basis of error-correction coding on elliptic codes are used. The use of the MV2 algorithm ensures an increase in the total entropy of the key and the physical separation of the transmission of the authenticator parts by various mobile/Internet communication channels based on multi-channel cryptography systems on flawed codes. The proposed mathematical models and algorithms for the practical implementation of the Niederreiter and McEliece HCCSFC make it possible to significantly reduce the energy capacity of group operations by reducing the power of the Galois field to GF 24–26 by additional transformations based on the MV2 algorithm, ensuring the required cryptographic strength.Документ Construction of hybrid security systems based on the crypto-code structures and flawed codes(ПП "Технологічний Центр", 2017) Yevseiev, S. P.; Korol, O. G.; Kots, HryhoriiIn order to ensure safety of SCCI, it is proposed to use hybrid crypto-code constructions based on the modified asymmetric crypto-code McEliece systems on flawed codes, which make it possible to obtain maximum quantity of emergent properties at minimal resource cost for initiating in the system the synergistic effect of security provision. The main difference from known approaches to the construction of hybrid cryptosystems is the use of MCCS instead of symmetric cryptosystems; to strengthen resistance and to "reduce" the alphabet power (dimensionality of field GF(26–28) to build the McEliece MCCS), the systems on flawed codes are employed. The algorithms proposed in present work for the formation and decryption of a cryptogram in the hybrid cryptosystem based on MCCS on flawed codes make it possible to practically implement HCCSFC. The study that we conducted into energy consumption of major operations in the hybrid cryptosystems and their stability on the basis of the proposed assessment procedure confirms efficiency of their application in order to provide basic requirements to service quality in IES.