https://github.com/tgalal/motoko-bitcoin

Bitcoin library for Motoko
https://github.com/tgalal/motoko-bitcoin

base58 bitcoin cryptography hmac ripemd160 secp256k1

Last synced: about 2 months ago
JSON representation

Bitcoin library for Motoko

• Host: GitHub
• URL: https://github.com/tgalal/motoko-bitcoin
• Owner: tgalal
• License: apache-2.0
• Created: 2022-02-06T17:18:20.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2023-02-14T22:57:18.000Z (over 1 year ago)
• Last Synced: 2024-01-26T10:34:57.117Z (5 months ago)
• Topics: base58, bitcoin, cryptography, hmac, ripemd160, secp256k1
• Language: Modelica
• Homepage:
• Size: 208 KB
• Stars: 18
• Watchers: 3
• Forks: 11
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-motoko - motoko-bitcoin - Bitcoin-related libraries (Base58, RIPMED160, HMAC). (Libraries / Cryptography)

README

        
# Algorithms for Bitcoin Integration in Motoko

## Testing

Pull dependencies

```

git submodule update --init

```

Run all tests

```

make test

```

## Usage

Base58:

```motoko

import Base58 "src/Base58";

let encoded : Text = Base58.encode([ /* Nat8 data */ ]);

```

Base58Check:

```motoko

import Base58Check "src/Base58Check";

let encoded : Text = Base58Check.encode([ /* Nat8 data */ ]);

```

HMAC:

```motoko

import Hmac "src/Hmac";

let key : [Nat8] = [ /* Key bytes */ ];

// HMAC-SHA256

let hmacSha256 : Hmac.Hmac = Hmac.sha256(key);

hmacSha256.write([ /* Nat8 data */ ]);

var result : [Nat8] = hmacSha256.sum();

// HMAC-SHA512

let hmacSha512 : Hmac.Hmac = Hmac.sha512(key);

hmacSha512.write([ /* Nat8 data */ ]);

result := hmacSha512.sum();

// HMAC-X

let hmacCustomDigest : Hmac.Hmac = Hmac.new(key, object {

  public let blockSize : Nat = 64;

  public func create() : Hmac.Digest = object {

    public func write(data : [Nat8]) { /* Process input */ };

    public func sum() : [Nat8] = [ /* Compute sum */ ];

  };

});

hmacCustomDigest.write([ /* Nat8 data */ ]);

result := hmacCustomDigest.sum();

```

RIPEMD160:

```motoko

import Ripemd160 "src/Ripemd160";

let digest : Ripemd160.Digest = Ripemd160.Digest();

digest.write([ /* Nat8 data */ ]);

digest.write([ /* Nat8 data */ ]);

let result : [Nat8] = digest.sum();

```

EC

```motoko

import Jacobi "src/ec/Jacobi";

import Affine "src/ec/Affine";

import Curves "src/ec/Curves";

// Get secp256k1 curve parameters.

let secp256k1 : Curves.Curve = Curves.secp256k1;

let Fp = secp256k1.Fp;

// Create affine point on the secp256k1 curve

let basePointAffine : Affine.Point = #point (Fp(secp256k1.gx), Fp(secp256k1.gy), secp256k1);

// Convert to Jacobi point

let basePointJacobi : Jacobi.Point = Jacobi.fromAffine(basePointAffine);

// Scalar multiplication

let mul1 = Jacobi.mul(basePointJacobi, 1234);

let mul2 = Jacobi.mulBase(1234, Curves.secp256k1);

assert(Jacobi.isEqual(mul1, mul2));

```

Bip32

```motoko

import Bip32 "src/Bip32";

let rootKey : ?Bip32.ExtendedPublicKey = Bip32.parse("xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8", null);

do ? {

  let derived : ?Bip32.ExtendedPublicKey = rootKey!.derivePath(#text "m/1/2/3");

  derived!;

};

```

Bech32:

```motoko

import Bech32 "src/Bech32";

Bech32.encode("bc", [ /* Nat8 data */ ], #BECH32);

Bech32.decode("bc", "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4");

```

Segwit:

```motoko

import Segwit "src/Segwit";

Segwit.encode("bc", /* WitnessProgram */ );

Segwit.decode("bc", "BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4");

```