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net.java.otr4j.crypto
Interface OtrCryptoEngine

Package class diagram package OtrCryptoEngine
All Known Implementing Classes:
OtrCryptoEngineImpl
public interface OtrCryptoEngine

Field Summary
static int AES_KEY_BYTE_LENGTH
           
static BigInteger BIGINTEGER_TWO
           
static int DH_PRIVATE_KEY_MINIMUM_BIT_LENGTH
           
static int DSA_PUB_TYPE
           
static BigInteger GENERATOR
           
static String GENERATOR_TEXT
           
static BigInteger MODULUS
           
static BigInteger MODULUS_MINUS_TWO
           
static String MODULUS_TEXT
           
static int SHA256_HMAC_KEY_BYTE_LENGTH
           
static byte[] ZERO_CTR
           
 
Method Summary
 byte[] aesDecrypt(byte[] key, byte[] ctr, byte[] b)
           
 byte[] aesEncrypt(byte[] key, byte[] ctr, byte[] b)
           
 KeyPair generateDHKeyPair()
           
 BigInteger generateSecret(PrivateKey privKey, PublicKey pubKey)
           
 DHPublicKey getDHPublicKey(BigInteger mpi)
           
 DHPublicKey getDHPublicKey(byte[] mpiBytes)
           
 String getFingerprint(PublicKey pubKey)
           
 byte[] sha1Hash(byte[] b)
           
 byte[] sha1Hmac(byte[] b, byte[] key, int length)
           
 byte[] sha256Hash(byte[] b)
           
 byte[] sha256Hmac(byte[] b, byte[] key)
           
 byte[] sha256Hmac(byte[] b, byte[] key, int length)
           
 byte[] sha256Hmac160(byte[] b, byte[] key)
           
 byte[] sign(byte[] b, PrivateKey privatekey)
           
 boolean verify(byte[] b, PublicKey pubKey, byte[] rs)
           
 

Field Detail

MODULUS_TEXT

static final String MODULUS_TEXT
See Also:
Constant Field Values

MODULUS

static final BigInteger MODULUS

BIGINTEGER_TWO

static final BigInteger BIGINTEGER_TWO

MODULUS_MINUS_TWO

static final BigInteger MODULUS_MINUS_TWO

GENERATOR_TEXT

static final String GENERATOR_TEXT
See Also:
Constant Field Values

GENERATOR

static final BigInteger GENERATOR

AES_KEY_BYTE_LENGTH

static final int AES_KEY_BYTE_LENGTH
See Also:
Constant Field Values

SHA256_HMAC_KEY_BYTE_LENGTH

static final int SHA256_HMAC_KEY_BYTE_LENGTH
See Also:
Constant Field Values

DH_PRIVATE_KEY_MINIMUM_BIT_LENGTH

static final int DH_PRIVATE_KEY_MINIMUM_BIT_LENGTH
See Also:
Constant Field Values

ZERO_CTR

static final byte[] ZERO_CTR

DSA_PUB_TYPE

static final int DSA_PUB_TYPE
See Also:
Constant Field Values
Method Detail

generateDHKeyPair

KeyPair generateDHKeyPair()
                          throws OtrCryptoException
Throws:
OtrCryptoException

getDHPublicKey

DHPublicKey getDHPublicKey(byte[] mpiBytes)
                           throws OtrCryptoException
Throws:
OtrCryptoException

getDHPublicKey

DHPublicKey getDHPublicKey(BigInteger mpi)
                           throws OtrCryptoException
Throws:
OtrCryptoException

sha256Hmac

byte[] sha256Hmac(byte[] b,
                  byte[] key)
                  throws OtrCryptoException
Throws:
OtrCryptoException

sha256Hmac

byte[] sha256Hmac(byte[] b,
                  byte[] key,
                  int length)
                  throws OtrCryptoException
Throws:
OtrCryptoException

sha1Hmac

byte[] sha1Hmac(byte[] b,
                byte[] key,
                int length)
                throws OtrCryptoException
Throws:
OtrCryptoException

sha256Hmac160

byte[] sha256Hmac160(byte[] b,
                     byte[] key)
                     throws OtrCryptoException
Throws:
OtrCryptoException

sha256Hash

byte[] sha256Hash(byte[] b)
                  throws OtrCryptoException
Throws:
OtrCryptoException

sha1Hash

byte[] sha1Hash(byte[] b)
                throws OtrCryptoException
Throws:
OtrCryptoException

aesDecrypt

byte[] aesDecrypt(byte[] key,
                  byte[] ctr,
                  byte[] b)
                  throws OtrCryptoException
Throws:
OtrCryptoException

aesEncrypt

byte[] aesEncrypt(byte[] key,
                  byte[] ctr,
                  byte[] b)
                  throws OtrCryptoException
Throws:
OtrCryptoException

generateSecret

BigInteger generateSecret(PrivateKey privKey,
                          PublicKey pubKey)
                          throws OtrCryptoException
Throws:
OtrCryptoException

sign

byte[] sign(byte[] b,
            PrivateKey privatekey)
            throws OtrCryptoException
Throws:
OtrCryptoException

verify

boolean verify(byte[] b,
               PublicKey pubKey,
               byte[] rs)
               throws OtrCryptoException
Throws:
OtrCryptoException

getFingerprint

String getFingerprint(PublicKey pubKey)
                      throws OtrCryptoException
Throws:
OtrCryptoException
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