Cryptographic Primitives Skill Expert implementation and usage of cryptographic primitives for blockchain and security applications. Capabilities - Digital Signatures : ECDSA, BLS, Schnorr signature implementation and verification - Key Derivation : BIP-32/39/44 hierarchical deterministic key generation - Threshold Cryptography : Shamir secret sharing, threshold signatures - Hash Functions : Secure usage of Keccak, Poseidon, MiMC, Pedersen - Commitments : Pedersen commitments, hash commitments - Secure Randomness : CSPRNG usage, VRF integration - Constant-Time Operations : Side-channel resist…