secp256k1-kmp/fr.acinq.secp256k1/Secp256k1

Secp256k1

interface Secp256k1

Types

object Companion : Secp256k1

Functions

abstract fun cleanup()

Delete the secp256k1 context from dynamic memory.

abstract fun compact2der(sig: ByteArray): ByteArray

Convert a compact ECDSA signature (64 bytes) to a der-encoded ECDSA signature.

abstract fun ecdh(privkey: ByteArray, pubkey: ByteArray): ByteArray

Compute an elliptic curve Diffie-Hellman secret.

abstract fun ecdsaRecover( sig: ByteArray, message: ByteArray, recid: Int): ByteArray

Recover a public key from an ECDSA signature.

abstract fun privKeyNegate(privkey: ByteArray): ByteArray

Negate the given private key.

privKeyTweakAdd

abstract fun privKeyTweakAdd(privkey: ByteArray, tweak: ByteArray): ByteArray

Tweak a private key by adding tweak to it.

privKeyTweakMul

abstract fun privKeyTweakMul(privkey: ByteArray, tweak: ByteArray): ByteArray

Tweak a private key by multiplying it by a tweak.

abstract fun pubKeyCombine(pubkeys: Array<ByteArray>): ByteArray

Add a number of public keys together. Returns the uncompressed public key (65 bytes).

open fun pubKeyCompress(pubkey: ByteArray): ByteArray

Serialize a public key to compact form (33 bytes).

abstract fun pubkeyCreate(privkey: ByteArray): ByteArray

Get the public key corresponding to the given private key. Returns the uncompressed public key (65 bytes).

abstract fun pubKeyNegate(pubkey: ByteArray): ByteArray

Negate the given public key. Returns the uncompressed public key (65 bytes).

abstract fun pubkeyParse(pubkey: ByteArray): ByteArray

Parse a serialized public key. Returns the uncompressed public key (65 bytes).

abstract fun pubKeyTweakAdd(pubkey: ByteArray, tweak: ByteArray): ByteArray

Tweak a public key by adding tweak times the generator to it. Returns the uncompressed public key (65 bytes).

abstract fun pubKeyTweakMul(pubkey: ByteArray, tweak: ByteArray): ByteArray

Tweak a public key by multiplying it by a tweak value. Returns the uncompressed public key (65 bytes).

abstract fun secKeyVerify(privkey: ByteArray): Boolean

Verify the validity of a private key.

abstract fun sign(message: ByteArray, privkey: ByteArray): ByteArray

Create a normalized ECDSA signature.

signatureNormalize

abstract fun signatureNormalize(sig: ByteArray): Pair<ByteArray, Boolean>

Convert an ECDSA signature to a normalized lower-S form (bitcoin standardness rule). Returns the normalized signature and a boolean set to true if the input signature was not normalized.

abstract fun signSchnorr( data: ByteArray, sec: ByteArray, auxrand32: ByteArray?): ByteArray

Create a Schnorr signature.

abstract fun verify( signature: ByteArray, message: ByteArray, pubkey: ByteArray): Boolean

Verify an ECDSA signature.

abstract fun verifySchnorr( signature: ByteArray, data: ByteArray, pub: ByteArray): Boolean

Verify a Schnorr signature.

Inheritors

Secp256k1Native