get_signature
Sign a 32-byte array with a 32-byte private key using the ECDSA (secp256k1) algorithm.
The given 32-byte array data_hash is typically a cryptographic hash obtained from a larger data structure using a hashing function such as hash(), sha256() or keccak256().
The returned value can be verified with verify_signature() using the public key belonging to the keypair of the given private key.
Return
a 64-byte signature
Since
0.13.11
Parameters
data_hash
a 32-byte array to be signed
privkey
the 32-byte private key with which to sign
Throws
exception
if either privkey or data_hash are not exactly 32 bytes long