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Cryptography Jobs

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Fixed-Price - Est. Budget: $ 200 Posted
Using Arbitrary Messaging Serialize a Newtonsoft JSON object, transmit via NXTLib encrypted message. At the receiving address accept the message and reconstitute Newtonsoft JSON object.
Fixed-Price - Est. Budget: $ 7,000 Posted
We need library in restricted C dialect, implementing high-level elliptic curve cryptographic primitives. We need elliptic curves because of short keys. Overall, we need a 48-byte digital signature. • Library should support brainpoolP192r1 or brainpoolP192t1. Other curves are acceptable if 192-bit. We are not interested in non-192-bit curves. • Library should generate public and private key based on truly random data. • Library should sign data with private key in under 100ms. • Library should verify signature with public key in under 100ms. • Not be vulnerable to crypto attacks. • Library should be written without dynamic memory allocation. No malloc/calloc/realloc/free, just global variables and stack. • Library should be written without libc. • Library should be optimized for STM32F205. • Library should targeted at GCC 4.6.0 • Library should be well commented. • Library should be styled according to Linux kernel code style. • Library should be split to files. • Library...