Method Detail

• cryptoSignInit

   abstract boolean cryptoSignInit(Sign.StateCryptoSign state)

  Useful for signing a multi-part message (Ed25519ph).If the message can fit in memory and can be supplied as asingle chunk, the single-part API should be preferred.This function must be called before the first crypto_sign_update() call.

  Parameters:

  state - The state.

• cryptoSignUpdate

   abstract boolean cryptoSignUpdate(Sign.StateCryptoSign state, Array<byte> chunk, int chunkLength)

  Add a new chunk of length chunkLen bytes to themessage that will eventually be signed.

  Parameters:

  state - The state.

  chunk - A part of the long message.

  chunkLength - Message length.

• cryptoSignFinalCreate

   abstract boolean cryptoSignFinalCreate(Sign.StateCryptoSign state, Array<byte> sig, Array<byte> sk)

  This function computes a signature for the previously supplied message,using the secret key sk and puts it into sig.

  Parameters:

  state - The state.

  sig - Resultant signature.

  sk - Secret key.

• cryptoSignFinalVerify

   abstract boolean cryptoSignFinalVerify(Sign.StateCryptoSign state, Array<byte> sig, Array<byte> pk)

  Verifies that sig is a valid signature for the message whosecontent has been previously supplied using crypto_update(),using the public key pk.

  Parameters:

  state - The state.

  sig - Resultant signature.

  pk - Secret key.

• cryptoSignKeypair

   abstract boolean cryptoSignKeypair(Array<byte> publicKey, Array<byte> secretKey)

  Generate a signing keypair (ed25519).

  Parameters:

  publicKey - Public key.

  secretKey - Secret key.

• cryptoSignSeedKeypair

   abstract boolean cryptoSignSeedKeypair(Array<byte> publicKey, Array<byte> secretKey, Array<byte> seed)

  Deterministically generate a public and secret key.

  Parameters:

  publicKey - Public key.

  secretKey - Secret key.

  seed - The seed used to generate the keys.

• cryptoSign

   abstract boolean cryptoSign(Array<byte> signedMessage, Array<byte> message, int messageLen, Array<byte> secretKey)

  Sign a message.

  Parameters:

  signedMessage - Signed message will be placed here.

  message - The message.

  messageLen - The message length.

  secretKey - The secret key.

• cryptoSignOpen

   abstract boolean cryptoSignOpen(Array<byte> message, Array<byte> signedMessage, int signedMessageLen, Array<byte> publicKey)

  Verify a signed message.

  Parameters:

  message - The message will be placed in here.

  signedMessage - The signed message.

  signedMessageLen - The signed message length.

  publicKey - Public key.

• cryptoSignDetached

   abstract boolean cryptoSignDetached(Array<byte> signature, Array<byte> message, int messageLen, Array<byte> secretKey)

  Returns a signature for a message. Thisdoes not prepend the signature to the message.See cryptoSign for that.

  Parameters:

  signature - The signature will be added to this byte array.

  message - The message to sign.

  messageLen - The message length.

  secretKey - The secret key.

• cryptoSignVerifyDetached

   abstract boolean cryptoSignVerifyDetached(Array<byte> signature, Array<byte> message, int messageLen, Array<byte> publicKey)

  Verifies that {@code signature} is valid for the {@code message}.

  Parameters:

  signature - The signature.

  message - The message.

  messageLen - The message length.

  publicKey - The public key that signed the message.

• convertPublicKeyEd25519ToCurve25519

   abstract boolean convertPublicKeyEd25519ToCurve25519(Array<byte> curve, Array<byte> ed)

  Converts a public ed25519 key to a public curve25519 key.

  Parameters:

  curve - The array in which the generated key will be placed.

  ed - The public key in ed25519.

• convertSecretKeyEd25519ToCurve25519

   abstract boolean convertSecretKeyEd25519ToCurve25519(Array<byte> curve, Array<byte> ed)

  Converts a secret ed25519 key to a secret curve25519 key.

  Parameters:

  curve - The array in which the generated key will be placed.

  ed - The secret key in ed25519.

• cryptoSignEd25519SkToSeed

   abstract boolean cryptoSignEd25519SkToSeed(Array<byte> seed, Array<byte> ed)

  Extracts the seed value from a secret ed25519 key.

  Parameters:

  seed - The array in which the seed value will be placed.

  ed - The secret key in ed25519.

• cryptoSignEd25519SkToPk

   abstract boolean cryptoSignEd25519SkToPk(Array<byte> publicKey, Array<byte> ed)

  Extracts the ed25519 public key from a secret ed25519 key.

  Parameters:

  publicKey - The array in which the public key will be placed.

  ed - The secret key in ed25519.