net.aholbrook.paseto.crypto.v2.libsodium.LibSodiumV2CryptoProvider Maven / Gradle / Ivy

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package net.aholbrook.paseto.crypto.v2.libsodium;

import com.goterl.lazycode.lazysodium.LazySodium;
import com.goterl.lazycode.lazysodium.LazySodiumJava;
import com.goterl.lazycode.lazysodium.SodiumJava;
import net.aholbrook.paseto.crypto.KeyPair;
import net.aholbrook.paseto.crypto.v2.V2CryptoProvider;

public class LibSodiumV2CryptoProvider extends V2CryptoProvider {
	private final LazySodium sodium;

	public LibSodiumV2CryptoProvider() {
		this(new LazySodiumJava(new SodiumJava()));
	}

	public LibSodiumV2CryptoProvider(LazySodium sodium) {
		this.sodium = sodium;
	}

	@Override
	public boolean blake2b(byte[] out, byte[] in, byte[] key) {
		validateBlake2b(out, in, key);
		return sodium.cryptoGenericHash(out, out.length, in, in.length, key, key.length);
	}

	@Override
	public byte[] randomBytes(int size) {
		return sodium.randomBytesBuf(size);
	}

	@Override
	public boolean aeadXChaCha20Poly1305IetfEncrypt(byte[] out, byte[] in, byte[] ad, byte[] nonce, byte[] key) {
		validateAeadXChaCha20Poly1305IetfEncrypt(out, in, ad, nonce, key);

		long[] outLen = new long[] {out.length};
		return sodium.cryptoAeadXChaCha20Poly1305IetfEncrypt(out, outLen, in, in.length, ad, ad.length, null,
				nonce, key);
	}

	@Override
	public boolean aeadXChaCha20Poly1305IetfDecrypt(byte[] out, byte[] in, byte[] ad, byte[] nonce, byte[] key) {
		validateAeadXChaCha20Poly1305IetfDecrypt(out, in, ad, nonce, key);

		long[] outLen = new long[] {out.length};
		return sodium.cryptoAeadXChaCha20Poly1305IetfDecrypt(out, outLen, null, in, in.length, ad, ad.length,
				nonce, key);
	}

	@Override
	public boolean ed25519Sign(byte[] sig, byte[] m, byte[] sk) {
		validateEd25519Sign(sig, m, sk);

		int[] sigLen = new int[] {sig.length};
		return sodium.cryptoSignDetached(sig, sigLen, m, m.length, sk);
	}

	@Override
	public boolean ed25519Verify(byte[] sig, byte[] m, byte[] pk) {
		validateEd25519Verify(sig, m, pk);
		return sodium.cryptoSignVerifyDetached(sig, m, m.length, pk);
	}

	@Override
	public byte[] ed25519SkToPk(byte[] sk) {
		validateEd25519PublicKey(sk);
		byte[] pk = new byte[ed25519SignPublicKeyBytes()];


		sodium.cryptoSignEd25519SkToPk(pk, sk);
		return pk;
	}

	@Override
	public KeyPair ed25519Generate() {
		byte[] sk = new byte[ed25519SignSecretKeyBytes()];
		byte[] pk = new byte[ed25519SignPublicKeyBytes()];
		sodium.cryptoSignKeypair(pk, sk);
		return new KeyPair(sk, pk);
	}
}