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Added crypto_sign_seed_keypair/cryptoSignSeedKeyPair #13

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Added crypto_sign_seed_keypair/cryptoSignSeedKeyPair #13

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20 changes: 20 additions & 0 deletions src/main/java/com/muquit/libsodiumjna/SodiumLibrary.java
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Original file line number Diff line number Diff line change
Expand Up @@ -272,6 +272,7 @@ int crypto_box_open_easy(byte[] decrypted, byte[] cipher_text,
long crypto_sign_secretkeybytes();
long crypto_sign_publickeybytes();
int crypto_sign_keypair(byte[] pk, byte[] sk);
int crypto_sign_seed_keypair(byte[] pk, byte[] sk, byte[] seed);
int crypto_sign_ed25519_bytes();
int crypto_sign_bytes();

Expand Down Expand Up @@ -372,6 +373,25 @@ public static SodiumKeyPair cryptoSignKeyPair() throws SodiumLibraryException
return kp;
}

public static SodiumKeyPair cryptoSignSeedKeyPair(byte[] seed32) throws SodiumLibraryException
{
SodiumKeyPair kp = new SodiumKeyPair();
byte[] publicKey = new byte[(int) sodium().crypto_sign_publickeybytes()];
byte[] privateKey = new byte[(int) sodium().crypto_sign_secretkeybytes()];
int rc = sodium().crypto_sign_seed_keypair(publicKey, privateKey, seed32);
if (rc != 0)
{
throw new SodiumLibraryException("libsodium crypto_sign_seed_keypair() failed, returned " + rc + ", expected 0");
}
kp.setPublicKey(publicKey);
kp.setPrivateKey(privateKey);
if (logger.isDebugEnabled()) {
logger.debug("pk len: " + publicKey.length);
logger.debug("sk len: " + privateKey.length);
}
return kp;
}

// libsodium's generichash (blake2b), this function will only return 'length' number of bytes of the hash
// this implementation does not expect key/key.length which blake does need, so we are setting them to null and 0
public static byte[] cryptoGenerichash(byte[] input, int length) throws SodiumLibraryException
Expand Down