Package 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	Description
static final class	Ed25519.Algorithm

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
Ed25519()

Method Summary

Modifier and Type	Method	Description
protected abstract org.bouncycastle.crypto.internal.Digest	createDigest()
org.bouncycastle.crypto.internal.Digest	createPrehash()
static void	generatePrivateKey(SecureRandom random, byte[] k)
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
void	sign(byte[] sk, int skOff, byte[] ctx, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
void	sign(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] ctx, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
void	sign(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
void	sign(byte[] sk, int skOff, byte[] m, int mOff, int mLen, byte[] sig, int sigOff)
void	signPrehash(byte[] sk, int skOff, byte[] ctx, byte[] ph, int phOff, byte[] sig, int sigOff)
void	signPrehash(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] ctx, byte[] ph, int phOff, byte[] sig, int sigOff)
void	signPrehash(byte[] sk, int skOff, byte[] pk, int pkOff, byte[] ctx, org.bouncycastle.crypto.internal.Digest ph, byte[] sig, int sigOff)
void	signPrehash(byte[] sk, int skOff, byte[] ctx, org.bouncycastle.crypto.internal.Digest ph, byte[] sig, int sigOff)
static boolean	validatePublicKeyFull(byte[] pk, int pkOff)
static boolean	validatePublicKeyPartial(byte[] pk, int pkOff)
boolean	verify(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] ctx, byte[] m, int mOff, int mLen)
boolean	verify(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] m, int mOff, int mLen)
boolean	verifyPrehash(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] ctx, byte[] ph, int phOff)
boolean	verifyPrehash(byte[] sig, int sigOff, byte[] pk, int pkOff, byte[] ctx, org.bouncycastle.crypto.internal.Digest ph)

Methods inherited from class java.lang.Object

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

Field Details

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 Details

Ed25519

public Ed25519()

Method Details

createPrehash

public org.bouncycastle.crypto.internal.Digest createPrehash()

generatePrivateKey

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

generatePublicKey

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

sign

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

sign

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

sign

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

signPrehash

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

signPrehash

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

signPrehash

public void signPrehash(byte[] sk,
 int skOff,
 byte[] ctx,
 org.bouncycastle.crypto.internal.Digest ph,
 byte[] sig,
 int sigOff)

signPrehash

public void signPrehash(byte[] sk,
 int skOff,
 byte[] pk,
 int pkOff,
 byte[] ctx,
 org.bouncycastle.crypto.internal.Digest ph,
 byte[] sig,
 int sigOff)

validatePublicKeyFull

public static boolean validatePublicKeyFull(byte[] pk,
 int pkOff)

validatePublicKeyPartial

public static boolean validatePublicKeyPartial(byte[] pk,
 int pkOff)

verify

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

verify

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

verifyPrehash

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

verifyPrehash

public boolean verifyPrehash(byte[] sig,
 int sigOff,
 byte[] pk,
 int pkOff,
 byte[] ctx,
 org.bouncycastle.crypto.internal.Digest ph)

createDigest

protected abstract org.bouncycastle.crypto.internal.Digest createDigest()