class SECP256K1 (source)
An Elliptic Curve Digital Signature using parameters as used by Bitcoin, and defined in Standards for Efficient Cryptography (SEC) (Certicom Research, http://www.secg.org/sec2-v2.pdf).
This class depends upon the BouncyCastle library being available and added as a java.security.Provider. See https://www.bouncycastle.org/wiki/display/JA1/Provider+Installation.
BouncyCastle can be included using the gradle dependency 'org.bouncycastle:bcprov-jdk15on'.
KeyPair |
A SECP256K1 key pair. class KeyPair |
Parameters |
class Parameters |
PublicKey |
A SECP256K1 public key. class PublicKey |
SecretKey |
A SECP256K1 private key. class SecretKey : Destroyable |
Signature |
A SECP256K1 digital signature. class Signature |
calculateKeyAgreement |
Calculates an ECDH key agreement between the private and the public key of another party, formatted as a 32 bytes array. static fun calculateKeyAgreement(privKey: SecretKey!, theirPubKey: PublicKey!): Bytes32! |
deriveECDHKeyAgreement |
static fun deriveECDHKeyAgreement(srcPrivKey: Bytes!, destPubKey: Bytes!): Bytes! |
sign |
Generates an ECDSA signature. static fun sign(data: ByteArray!, keyPair: KeyPair!): Signature!static fun sign(data: Bytes!, keyPair: KeyPair!): Signature! |
signHashed |
Generates an ECDSA signature. static fun signHashed(hash: ByteArray!, keyPair: KeyPair!): Signature!static fun signHashed(hash: Bytes32!, keyPair: KeyPair!): Signature! |
verify |
Verifies the given ECDSA signature against the message bytes using the public key bytes. static fun verify(data: ByteArray!, signature: Signature!, publicKey: PublicKey!): Booleanstatic fun verify(data: Bytes!, signature: Signature!, publicKey: PublicKey!): Boolean |
verifyHashed |
Verifies the given ECDSA signature against the message bytes using the public key bytes. static fun verifyHashed(hash: Bytes32!, signature: Signature!, publicKey: PublicKey!): Booleanstatic fun verifyHashed(hash: ByteArray!, signature: Signature!, publicKey: PublicKey!): Boolean |