tesracrypto

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Published: Dec 30, 2019 License: LGPL-3.0

README

Tesra Crypto

Cryptography Library for TesraSupernet Network

Usage

Key pair

Generate a key pair:

import "github.com/TesraSupernet/tesracrypto/keypair"

// Generate key pair
private, public, err := keypair.GenerateKeyPair(keypair.PK_ECDSA, keypair.P256)

The first arguments indicates the key type used for specific algorithm.

Available key types:

PK_ECDSA
PK_SM2
PK_EDDSA

The Second argument differs from the key types:

  • as for to ECDSA, it indicates the curve which could be one of:

    P224, P256, P384, P521

  • as for SM2, it indicates the curve similar to ECDSA but should be SM2P256V1.

  • as for EdDSA, it sould be ED25519.

To serialize/deserialize the public key:

// Serialize public key
buf := keypair.SerializePublicKey(public)

// Deserialize public key
public, err := keypair.DeserializePublicKey(buf)

Signature

To generate a signature for some message, a private key should be provided as well as a specified signature scheme. Notice that the signature scheme should match the private key.

Supported signture schemes:

SHA224withECDSA
SHA256withECDSA
SHA384withECDSA
SHA512withECDSA
SHA3-224withECDSA
SHA3-256withECDSA
SHA3-384withECDSA
SHA3-512withECDSA
RIPEMD160withECDSA
SM3withSM2
SHA512withEdDSA

To verify a signature, just input the public key as well as the signature with the original message.

import "github.com/TesraSupernet/tesracrypto/signature"

// Generate signature for @msg using private key @private
sig, err := signature.Sign(signature.SHA256withECDSA, private, msg, nil)

// Verify the signature using public key @public
ok := signature.Verify(public, msg, sig)

Serialization:

// Serialization
buf, err := signature.Serialize(sig)

// Deserialization
sig, err = signature.Deserialize(buf)

License

TesraSupernet Crypto is under LGPL v3.0 license. See LICENSE for details.

Directories

Path Synopsis
Package keypair implements asymmetric key pair generation and some related functions.
Package keypair implements asymmetric key pair generation and some related functions.
This package is a wrapper of verifiable random function using curve secp256r1.
This package is a wrapper of verifiable random function using curve secp256r1.

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