org.bouncycastle.math.ec.rfc8032

Class Ed25519

java.lang.Object

org.bouncycastle.math.ec.rfc8032.Ed25519

public abstract class Ed25519
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Ed25519.Algorithm

Field Summary

Fields

Modifier and Type	Field and Description
static int	PREHASH_SIZE
static int	PUBLIC_KEY_SIZE
static int	SECRET_KEY_SIZE
static int	SIGNATURE_SIZE

Constructor Summary

Constructors

Constructor and Description
Ed25519()

Method Summary

Modifier and Type	Method and Description
static Digest	createPrehash()
static void	generatePrivateKey(SecureRandom random, byte[] k)
static void	generatePublicKey(byte[] sk, int skOff, byte[] pk, int pkOff)
static void	precompute()
static void	scalarMultBaseYZ(X25519.Friend friend, byte[] k, int kOff, int[] y, int[] z) NOTE: Only for use by X25519
static void	sign(byte[] sk, int skOff, byte[] ctx, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
static void	sign(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] ctx, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
static void	sign(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
static void	sign(byte[] sk, int skOff, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
static void	signPrehash(byte[] sk, int skOff, byte[] ctx, byte[] ph, int phOff, byte[] sig, int sigOff)
static void	signPrehash(byte[] sk, int skOff, byte[] ctx, Digest ph, byte[] sig, int sigOff)
static void	signPrehash(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] ctx, byte[] ph, int phOff, byte[] sig, int sigOff)
static void	signPrehash(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] ctx, Digest ph, byte[] sig, int sigOff)
static boolean	verify(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] ctx, byte[] m, int mOff, int mLen)
static boolean	verify(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] m, int mOff, int mLen)
static boolean	verifyPrehash(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] ctx, byte[] ph, int phOff)
static boolean	verifyPrehash(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] ctx, Digest ph)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PREHASH_SIZE

public static final int PREHASH_SIZE

See Also:

Constant Field Values

PUBLIC_KEY_SIZE

public static final int PUBLIC_KEY_SIZE

See Also:

Constant Field Values

SECRET_KEY_SIZE

public static final int SECRET_KEY_SIZE

See Also:

Constant Field Values

SIGNATURE_SIZE

public static final int SIGNATURE_SIZE

See Also:

Constant Field Values

Constructor Detail

Ed25519

public Ed25519()

Method Detail

createPrehash

public static Digest createPrehash()

generatePrivateKey

public static void generatePrivateKey(SecureRandom random,
                                      byte[] k)

generatePublicKey

public static void generatePublicKey(byte[] sk,
                                     int skOff,
                                     byte[] pk,
                                     int pkOff)

precompute

public static void precompute()

scalarMultBaseYZ

public static void scalarMultBaseYZ(X25519.Friend friend,
                                    byte[] k,
                                    int kOff,
                                    int[] y,
                                    int[] z)

NOTE: Only for use by X25519

sign

public static void sign(byte[] sk,
                        int skOff,
                        byte[] m,
                        int mOff,
                        int mLen,
                        byte[] sig,
                        int sigOff)

sign

public static void sign(byte[] sk,
                        int skOff,
                        byte[] pk,
                        int pkOff,
                        byte[] m,
                        int mOff,
                        int mLen,
                        byte[] sig,
                        int sigOff)

sign

public static void sign(byte[] sk,
                        int skOff,
                        byte[] ctx,
                        byte[] m,
                        int mOff,
                        int mLen,
                        byte[] sig,
                        int sigOff)

sign

public static void sign(byte[] sk,
                        int skOff,
                        byte[] pk,
                        int pkOff,
                        byte[] ctx,
                        byte[] m,
                        int mOff,
                        int mLen,
                        byte[] sig,
                        int sigOff)

signPrehash

public static void signPrehash(byte[] sk,
                               int skOff,
                               byte[] ctx,
                               byte[] ph,
                               int phOff,
                               byte[] sig,
                               int sigOff)

signPrehash

public static void signPrehash(byte[] sk,
                               int skOff,
                               byte[] pk,
                               int pkOff,
                               byte[] ctx,
                               byte[] ph,
                               int phOff,
                               byte[] sig,
                               int sigOff)

signPrehash

public static void signPrehash(byte[] sk,
                               int skOff,
                               byte[] ctx,
                               Digest ph,
                               byte[] sig,
                               int sigOff)

signPrehash

public static void signPrehash(byte[] sk,
                               int skOff,
                               byte[] pk,
                               int pkOff,
                               byte[] ctx,
                               Digest ph,
                               byte[] sig,
                               int sigOff)

verify

public static boolean verify(byte[] sig,
                             int sigOff,
                             byte[] pk,
                             int pkOff,
                             byte[] m,
                             int mOff,
                             int mLen)

verify

public static boolean verify(byte[] sig,
                             int sigOff,
                             byte[] pk,
                             int pkOff,
                             byte[] ctx,
                             byte[] m,
                             int mOff,
                             int mLen)

verifyPrehash

public static boolean verifyPrehash(byte[] sig,
                                    int sigOff,
                                    byte[] pk,
                                    int pkOff,
                                    byte[] ctx,
                                    byte[] ph,
                                    int phOff)

verifyPrehash

public static boolean verifyPrehash(byte[] sig,
                                    int sigOff,
                                    byte[] pk,
                                    int pkOff,
                                    byte[] ctx,
                                    Digest ph)