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SMLBLAKE3.kt

Kotlin BLAKE3 implementation (cryptographic hash function)

Mahdi Safarmohammadloo

Based on https://github.com/BLAKE3-team/BLAKE3

Special Thanks to rctcwyvrn !

He Translated Blake3 reference implementation from Rust to Java https://github.com/rctcwyvrn/blake3

I Optimized and Translated it to Kotlin

It's not fast as native implementation of Rust(and java jni native)

BENCHMARK :

  • blake3KotlinFromJava(auto translated from java) = 1029 ms

  • blake3Java = 293 ms

  • SMLBLAKE3.kt = 269 ms

  • sha1 = 222 ms

  • sha256 = 149 ms

  • sha512 = 101 ms

  • blake3Native(java jni) = 22 ms

Examples

        // Hashing bytes
        val hasher = SMLBLAKE3.newInstance()
        hasher.update("This is a string".toByteArray())
        val hexhash : String = hasher.hexdigest()
        // Hashing files
        val hasher = SMLBLAKE3.newInstance()
        hasher.update(File(filename))
        val filehash : String = hasher.hexdigest()

If what you want are java bindings for the fully optimized blake3, try: https://github.com/sken77/BLAKE3jni