How to sign a message with Ed25519 using Scrypto?

Create a Curve25519 instance, generate a key pair with createKeyPair, then use the sign method with the private key and message. Verify with the verify method using the signature and public key, as shown in the README's signing functions example.

Scrypto vs Bouncy Castle for Scala cryptography?

Scrypto offers idiomatic Scala APIs and unique features like authenticated AVL+ trees, but Bouncy Castle is a more comprehensive Java library with wider cryptographic support. Choose Scrypto for Scala-specific projects leveraging its advanced data structures; otherwise, Bouncy Castle might be better for general-purpose needs.

How to implement authenticated AVL+ trees with Scrypto?

Use the BatchAVLProver class with specified key and value lengths, perform operations like Insert or Update, and generate proofs with generateProof. Verifiers replay operations using BatchAVLVerifier, as detailed in the lengthy code example in the 'Authenticated data structures' section.

What hash functions are supported in Scrypto?

Scrypto supports Blake2b, Keccak, SHA, Whirlpool, Skein, and Stribog hash functions, all secure and thread-safe. You can use them via interfaces like Keccak512, with examples provided in the README.

Is Scrypto suitable for production use?

Yes, it's used in the Scorex blockchain framework and has CI via Travis CI, but check the documentation gaps and benchmark separately for performance-critical applications. The public domain license allows unrestricted use.

How to install Scrypto with sbt?

Add the dependency to your build.sbt: libraryDependencies += "org.scorexfoundation" %% "scrypto" % "3.0.0", and set the resolver to Sonatype Releases as specified in the 'Get Scrypto' section of the README.

scrypto — Scala Cryptographic Toolkit

What is scrypto?

Scrypto is a cryptographic toolkit for Scala that provides a suite of secure primitives including hash functions, signing algorithms, encoding schemes, and authenticated data structures. It solves the problem of making cryptography accessible and safe for developers building applications that require robust security features.

Target Audience

Scala developers working on applications needing cryptographic operations, such as blockchain projects, secure messaging systems, or any software requiring data integrity and authentication.

Value Proposition

Developers choose Scrypto for its comprehensive, thread-safe implementations of essential cryptographic algorithms, its origin in the proven Scorex blockchain framework, and its permissive public domain license that allows unrestricted use.

Cryptographic primitives for Scala

Use Cases

Best For

Implementing secure hash functions in Scala applications
Adding digital signatures with Curve25519/Ed25519 support
Building authenticated data structures like AVL+ trees for two-party verification
Encoding and decoding binary data with Base16, Base58, or Base64
Integrating cryptographic primitives into blockchain or distributed ledger projects
Creating Merkle trees for cryptographic commitments and proofs

Not Ideal For

Projects requiring a wide variety of elliptic curves beyond Curve25519 and Ed25519
Teams seeking minimal dependency setups without npm or complex SBT memory configurations
Applications needing symmetric encryption, key derivation, or other common cryptographic primitives not included in Scrypto's suite

Pros & Cons

Pros

Comprehensive Hash Functions

Supports multiple secure hash algorithms like Blake2b, Keccak, and SHA, all implemented as thread-safe for concurrent use, as detailed in the 'Hash functions' section.

Authenticated AVL+ Trees

Implements two-party authenticated data structures with batching compression and verifier efficiency guarantees, based on academic research from the referenced IACR paper.

Secure Signing Capabilities

Provides a Scala wrapper for Curve25519-Java using JDK SecureRandom, ensuring robust elliptic curve signatures for Ed25519 and Curve25519, with simple API calls demonstrated in the README.

Flexible Encoding Schemes

Includes Base16, Base58, and Base64 for reliable binary-to-text encoding and decoding, with clear examples like Base64.encode and decode in the documentation.

Cons

Limited Cryptographic Scope

Focuses primarily on hashing, signing, and data structures, lacking common features such as symmetric encryption or key derivation functions, which limits its utility for broader cryptographic needs.

Documentation Gaps

The README admits incomplete sections, notably the Merkle tree description marked as TODO, which can hinder developers seeking comprehensive guidance and examples.

Complex Build Process

Requires npm installation for ScalablyTyped and specific SBT memory settings, adding setup overhead and potential environment issues, as mentioned in the contributing section.

What is scrypto?

Target Audience

Scala developers working on applications needing cryptographic operations, such as blockchain projects, secure messaging systems, or any software requiring data integrity and authentication.

Value Proposition

Use Cases

Best For

Implementing secure hash functions in Scala applications
Adding digital signatures with Curve25519/Ed25519 support
Building authenticated data structures like AVL+ trees for two-party verification
Encoding and decoding binary data with Base16, Base58, or Base64
Integrating cryptographic primitives into blockchain or distributed ledger projects
Creating Merkle trees for cryptographic commitments and proofs

Not Ideal For

Projects requiring a wide variety of elliptic curves beyond Curve25519 and Ed25519
Teams seeking minimal dependency setups without npm or complex SBT memory configurations
Applications needing symmetric encryption, key derivation, or other common cryptographic primitives not included in Scrypto's suite

Pros & Cons

Pros

Comprehensive Hash Functions

Supports multiple secure hash algorithms like Blake2b, Keccak, and SHA, all implemented as thread-safe for concurrent use, as detailed in the 'Hash functions' section.

Authenticated AVL+ Trees

Implements two-party authenticated data structures with batching compression and verifier efficiency guarantees, based on academic research from the referenced IACR paper.

Secure Signing Capabilities

Provides a Scala wrapper for Curve25519-Java using JDK SecureRandom, ensuring robust elliptic curve signatures for Ed25519 and Curve25519, with simple API calls demonstrated in the README.

Flexible Encoding Schemes

Includes Base16, Base58, and Base64 for reliable binary-to-text encoding and decoding, with clear examples like Base64.encode and decode in the documentation.

Cons

Limited Cryptographic Scope

Focuses primarily on hashing, signing, and data structures, lacking common features such as symmetric encryption or key derivation functions, which limits its utility for broader cryptographic needs.

Documentation Gaps

The README admits incomplete sections, notably the Merkle tree description marked as TODO, which can hinder developers seeking comprehensive guidance and examples.

Complex Build Process

Requires npm installation for ScalablyTyped and specific SBT memory settings, adding setup overhead and potential environment issues, as mentioned in the contributing section.

scrypto

What is scrypto?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

scrypto

What is scrypto?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?