const ( PrivKeyName = "tendermint/PrivKeySecp256k1" PubKeyName = "tendermint/PubKeySecp256k1" KeyType = "secp256k1" PrivKeySize = 32 )
const PubKeySize = 33
PubKeySize is comprised of 32 bytes for one field element (the x-coordinate), plus one byte for the parity of the y-coordinate.
PrivKey implements PrivKey.
GenPrivKey generates a new ECDSA private key on curve secp256k1 private key. It uses OS randomness to generate the private key.
GenPrivKeySecp256k1 hashes the secret with SHA2, and uses that 32 byte output to create the private key.
It makes sure the private key is a valid field element by setting:
c = sha256(secret) k = (c mod (n − 1)) + 1, where n = curve order.
NOTE: secret should be the output of a KDF like bcrypt, if it's derived from user input.
Bytes marshalls the private key using amino encoding.
Equals - you probably don't need to use this. Runs in constant time based on length of the keys.
PubKey performs the point-scalar multiplication from the privKey on the generator point to get the pubkey.
Sign creates an ECDSA signature on curve Secp256k1, using SHA256 on the msg. The returned signature will be of the form R || S (in lower-S form).
PubKey implements crypto.PubKey. It is the compressed form of the pubkey. The first byte depends is a 0x02 byte if the y-coordinate is the lexicographically largest of the two associated with the x-coordinate. Otherwise the first byte is a 0x03. This prefix is followed with the x-coordinate.
Address returns a Bitcoin style addresses: RIPEMD160(SHA256(pubkey))
Bytes returns the pubkey marshalled with amino encoding.
VerifySignature verifies a signature of the form R || S. It rejects signatures which are not in lower-S form.