FIELD: cryptographic method and chip-card for encoding information, methods for creating electronic signatures.
SUBSTANCE: at least one calculation step is performed, providing for realization of E operation of modular exponentiation in accordance to formula E=xd(mod p·q), where d and mod p·q are components of a secret key, while parallel represent first simple multiplier, q is second simple multiplier, d is level coefficient, and x represents base, while operation E of modular exponentiation is performed in accordance to Chinese theorem about remainders.
EFFECT: decreased amount of computing operations and machine time costs during simultaneous increase of level of data protection from unsanctioned access.
4 cl
