Viewing Transactions in Block in Etheruem with Go. Transactions. This views transactions.
Keys and Signatures in Ethereum (Node.js). Keys and Signatures in Ethereum. Public and private keys in Ethereum, and the ECDSA signature
02, 03 or 04? So What Are Compressed and Uncompressed Public Keys?. Compressed and Uncompressed Public Keys. Compressing and uncompressing the public key in secp256k1.
Symmetric Key Encryption For Smart Contracts. Symmetric key. Solidity does not natively support symmetric key encryption, such as with AES. Overall, AES would consume too much gas and thus be expensive to implement. But, we can use hashing and X-OR methods to do the encryption. In this case, we will create a 256-bit random value, and then encrypt it with an encryption key, and then decrypt it.