ledger::core::api::Secp256k1 Class Reference

#include <Secp256k1.hpp>

Inheritance diagram for ledger::core::api::Secp256k1:

Public Member Functions
virtual std::vector< uint8_t >	computePubKey (const std::vector< uint8_t > &privKey, bool compress)=0
virtual std::vector< uint8_t >	computeUncompressedPubKey (const std::vector< uint8_t > &pubKey)=0
virtual std::vector< uint8_t >	sign (const std::vector< uint8_t > &privKey, const std::vector< uint8_t > &data)=0
virtual bool	verify (const std::vector< uint8_t > &data, const std::vector< uint8_t > &signature, const std::vector< uint8_t > &pubKey)=0

Static Public Member Functions
static std::shared_ptr< Secp256k1 >	createInstance ()
static std::shared_ptr< Secp256k1 >	newInstance ()

Detailed Description

Class implementing secp256k1 used in Bitcoin.

Member Function Documentation

computePubKey()

virtual std::vector<uint8_t> ledger::core::api::Secp256k1::computePubKey ( const std::vector< uint8_t > &  privKey, bool  compress  )

pure virtual

Generates public key from private key.

Parameters

privKey	32 byte private key
compress	get compressed (35 bytes) or uncompressed (65 bytes)

Returns

public key can be compressed (35 bytes starting with 02 or 03) or un compressed (65 bytes starting with 04)

Implemented in ledger::core::Secp256k1Api.

computeUncompressedPubKey()

virtual std::vector<uint8_t> ledger::core::api::Secp256k1::computeUncompressedPubKey ( const std::vector< uint8_t > &  pubKey )

pure virtual

Generates uncompressed public key from compressed public key.

Parameters

pubKey

33 byte private key (starting with 02 or 03)

Returns

uncompressed public key (65 bytes starting with 04)

Implemented in ledger::core::Secp256k1Api.

createInstance()

std::shared_ptr< api::Secp256k1 > ledger::core::api::Secp256k1::createInstance ( )

static

Create an instance of Secp256k1.

Returns

Secp256k1 instance

sign()

virtual std::vector<uint8_t> ledger::core::api::Secp256k1::sign ( const std::vector< uint8_t > &  privKey, const std::vector< uint8_t > &  data  )

pure virtual

Signs message using a given private key.

Parameters

privKey	32 bytes private key
data	32 bytes message to sign

Returns

32 bytes signed message

Implemented in ledger::core::Secp256k1Api.

verify()

virtual bool ledger::core::api::Secp256k1::verify ( const std::vector< uint8_t > &  data, const std::vector< uint8_t > &  signature, const std::vector< uint8_t > &  pubKey  )

pure virtual

Check if message was signed with given signature and public key.

Parameters

data	32 bytes signed message
signature	32 bytes signature (generated from private key)
oubkey	32 bytes public key

Returns

true if message was signed with signature and public key (both issued from same private key)

Implemented in ledger::core::Secp256k1Api.

---

The documentation for this class was generated from the following files:

• src/api/Secp256k1.hpp
• src/crypto/Secp256k1Api.cpp