Package net.i2p.crypto

These classes provide a number of low-level cryptographic routines.

These cryptographic routines include symmetric and asymmetric encryption and decryption, hashing, secure random number generation...

Interface Summary

Interface	Description
EntropyHarvester	Allow various components with some entropy to feed that entropy back into some PRNG.
KeyFactory	Make KeyPairs
KeyRing	A backend for storing and retrieving SigningPublicKeys to be used for verifying signatures.
TagSetHandle	An opaque handle to a TagSet returned by the SessionKeyManager, so that OCMOSJ can report that the tags were later acked, or not.

Class Summary

Class	Description
AESEngine	Dummy wrapper for AES cipher operation.
Blinding	Utilities for Blinding EdDSA keys.
CertUtil	Java X.509 certificate utilities, consolidated from various places.
ChaCha20	ChaCha20, wrapper around Noise ChaChaCore.
CryptixAESEngine	Wrapper for AES cypher operation using Cryptix's Rijndael implementation.
CryptixAESKeyCache	Cache the objects used in CryptixRijndael_Algorithm.makeKey to reduce memory churn.
CryptixAESKeyCache.KeyCacheEntry	all the data alloc'ed in a makeKey call
CryptixRijndael_Algorithm	Rijndael --pronounced Reindaal-- is a variable block-size (128-, 192- and 256-bit), variable key-size (128-, 192- and 256-bit) symmetric cipher.
CryptoCheck	Moved from CryptixAESEngine and net.i2p.router.tasks.CryptoChecker.
CryptoConstants	Prime for ElGamal from http://tools.ietf.org/html/rfc3526 Primes for DSA: Generated by TheCrypto http://article.gmane.org/gmane.comp.security.invisiblenet.iip.devel/343 See also: ECConstants, RSAConstants
DirKeyRing	Simple storage of each cert in a separate file in a directory.
DSAEngine	Sign and verify using DSA-SHA1 and other signature algorithms.
ECConstants	Constants for elliptic curves, from NIST FIPS 186-4 (2013) / ANSI X9.62
ECUtil	Used by KeyGenerator.getSigningPublicKey() Modified from http://stackoverflow.com/questions/15727147/scalar-multiplication-of-point-over-elliptic-curve Apparently public domain.
ElGamalEngine	Wrapper for ElGamal encryption/signature schemes.
Hash384	48 byte hash
Hash512	64 byte hash
HKDF	Various flavors of HKDF using HMAC-SHA256.
HMAC256Generator	Calculate the HMAC-SHA256 of a key+message.
HMAC256Generator.HMACKey	Like SecretKeySpec but doesn't copy the key in the construtor, for speed.
HMACGenerator	Calculate the HMAC of a key+message.
KeyGenerator	Define a way of generating asymmetrical key pairs as well as symmetrical keys
KeyPair	Same as java.security.KeyPair, but with I2P keys
KeyStoreUtil	Keystore utilities, consolidated from various places.
RSAConstants	Constants for RSA
RSASigningPrivateCrtKey	A SigningPrivateKey that retains the Chinese Remainder Theorem parameters, so it can be converted back to a Java CRT key.
SelfSignedGenerator	Generate keys and a selfsigned certificate, suitable for storing in a Keystore with KeyStoreUtil.storePrivateKey().
SessionKeyManager	Manage the session keys and session tags used for encryption and decryption.
SHA1	NOTE: As of 0.8.7, use getInstance() instead of new SHA1(), which will return the JVM's MessageDigest if it is faster.
SHA1Hash	Because DSAEngine was abusing Hash for 20-byte hashes
SHA256Generator	Defines a wrapper for SHA-256 operation.
SigContext.SigContextSpec	The AlgorithmParameterSpec.
SigUtil	Utilities for Signing keys and Signatures
SipHashInline	SipHash implementation with hand inlining the SIPROUND.
SU3File	Succesor to the ".sud" format used in TrustedUpdate.
TrustedUpdate	Handles DSA signing and verification of update files.
YKGenerator	Precalculate the Y and K for ElGamal encryption operations.

Enum Summary

Enum	Description
EncAlgo	Base encryption algorithm type
EncType	Defines the properties for various encryption types that I2P supports or may someday support.
SigAlgo	Base signature algorithm type
SigContext	Defines the context for signing with personalized hashes.
SigType	Defines the properties for various signature types that I2P supports or may someday support.