support.crypto
Interface CryptoAgent

All Known Implementing Classes:

MyCryptoAgent

public interface CryptoAgent

Field Summary

static int	BIG_INT_SEED_BITS the number of bits used to represent p and q
static int	E_VALUE the value of the encryption exponent (aka e)
static int	PRIME_CHECK_PRECISION the certainty that a number is prime.

Method Summary

byte[]	decrypt(byte[] cipher) Decrypt cipher using your private key (_d).
byte[]	encrypt(CryptoPublicKey key, byte[] message) Encrypt the given message using the provided public key.
CryptoPublicKey	getPublicKey() Return a CryptoPublicKey that contains your N and E values.

Field Detail

BIG_INT_SEED_BITS

static final int BIG_INT_SEED_BITS

the number of bits used to represent p and q

See Also:

Constant Field Values

PRIME_CHECK_PRECISION

static final int PRIME_CHECK_PRECISION

the certainty that a number is prime. i.e. the probability that a prime number is in fact prime should be: 1 - (1 / 2^PRIME_CHECK_PRECISION)

See Also:

Constant Field Values

E_VALUE

static final int E_VALUE

the value of the encryption exponent (aka e)

See Also:

Constant Field Values

Method Detail

getPublicKey

CryptoPublicKey getPublicKey()

Return a CryptoPublicKey that contains your N and E values.

Returns:

public key containing this CryptoAgent's N and E values.

decrypt

byte[] decrypt(byte[] cipher)

Decrypt cipher using your private key (_d).

Parameters:

cipher - an array of bytes representing an encrypted message.

Returns:

an array of bytes storing the decrypted cipher.

encrypt

byte[] encrypt(CryptoPublicKey key,
               byte[] message)

Encrypt the given message using the provided public key.

Parameters:

key - the public key to be used for the encryption.

message - the message to be encrypted.

Returns:

the encrypted message (cipher).