Package org.conscrypt

Class OpenSSLSignature

java.lang.Object

java.security.SignatureSpi

org.conscrypt.OpenSSLSignature

Direct Known Subclasses:

OpenSSLSignature.MD5RSA, OpenSSLSignature.SHA1ECDSA, OpenSSLSignature.SHA1RSA, OpenSSLSignature.SHA224ECDSA, OpenSSLSignature.SHA224RSA, OpenSSLSignature.SHA256ECDSA, OpenSSLSignature.SHA256RSA, OpenSSLSignature.SHA384ECDSA, OpenSSLSignature.SHA384RSA, OpenSSLSignature.SHA512ECDSA, OpenSSLSignature.SHA512RSA

public class OpenSSLSignature
extends SignatureSpi

Implements the subset of the JDK Signature interface needed for signature verification using OpenSSL.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	OpenSSLSignature.MD5RSA
static class	OpenSSLSignature.SHA1ECDSA
static class	OpenSSLSignature.SHA1RSA
static class	OpenSSLSignature.SHA224ECDSA
static class	OpenSSLSignature.SHA224RSA
static class	OpenSSLSignature.SHA256ECDSA
static class	OpenSSLSignature.SHA256RSA
static class	OpenSSLSignature.SHA384ECDSA
static class	OpenSSLSignature.SHA384RSA
static class	OpenSSLSignature.SHA512ECDSA
static class	OpenSSLSignature.SHA512RSA

Field Summary

Fields inherited from class java.security.SignatureSpi

appRandom

Method Summary

Modifier and Type	Method	Description
protected Object	engineGetParameter(String param)	Returns the value of the parameter with the specified name.
protected void	engineInitSign(PrivateKey privateKey)	Initializes this SignatureSpi instance for signing, using the private key of the identity whose signature is going to be generated.
protected void	engineInitVerify(PublicKey publicKey)	Initializes this SignatureSpi instance for signature verification, using the public key of the identity whose signature is going to be verified.
protected void	engineSetParameter(String param, Object value)	Sets the specified parameter to the given value.
protected byte[]	engineSign()	Generates and returns the signature of all updated data.
protected void	engineUpdate(byte input)	Updates the data to be verified or to be signed, using the specified byte.
protected void	engineUpdate(byte[] input, int offset, int len)	Updates the data to be verified or to be signed, using the given byte[], starting form the specified index for the specified length.
protected boolean	engineVerify(byte[] sigBytes)	Indicates whether the given sigBytes can be verified using the public key or a certificate of the signer.

Methods inherited from class java.security.SignatureSpi

clone, engineGetParameters, engineInitSign, engineSetParameter, engineSign, engineUpdate, engineVerify

Methods inherited from class java.lang.Object

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

Method Detail

engineUpdate

protected void engineUpdate(byte input)

Description copied from class: SignatureSpi

Updates the data to be verified or to be signed, using the specified byte.

Specified by:

engineUpdate in class SignatureSpi

Parameters:

input - the byte to update with.

engineUpdate

protected void engineUpdate(byte[] input,
                            int offset,
                            int len)

Description copied from class: SignatureSpi

Updates the data to be verified or to be signed, using the given byte[], starting form the specified index for the specified length.

Specified by:

engineUpdate in class SignatureSpi

Parameters:

input - the byte array to update with.

offset - the start index in b of the data.

len - the number of bytes to use.

engineGetParameter

protected Object engineGetParameter(String param)
                             throws InvalidParameterException

Description copied from class: SignatureSpi

Returns the value of the parameter with the specified name.

Specified by:

engineGetParameter in class SignatureSpi

Parameters:

param - the name of the requested parameter value.

Returns:

the value of the parameter with the specified name, maybe null.

Throws:

InvalidParameterException - if param is not a valid parameter for this SignatureSpi or an other error occurs.

engineInitSign

protected void engineInitSign(PrivateKey privateKey)
                       throws InvalidKeyException

Description copied from class: SignatureSpi

Initializes this SignatureSpi instance for signing, using the private key of the identity whose signature is going to be generated.

Specified by:

engineInitSign in class SignatureSpi

Parameters:

privateKey - the private key.

Throws:

InvalidKeyException - if privateKey is not valid.

engineInitVerify

protected void engineInitVerify(PublicKey publicKey)
                         throws InvalidKeyException

Description copied from class: SignatureSpi

Initializes this SignatureSpi instance for signature verification, using the public key of the identity whose signature is going to be verified.

Specified by:

engineInitVerify in class SignatureSpi

Parameters:

publicKey - the public key.

Throws:

InvalidKeyException - if publicKey is not valid.

engineSetParameter

protected void engineSetParameter(String param,
                                  Object value)
                           throws InvalidParameterException

Description copied from class: SignatureSpi

Sets the specified parameter to the given value.

Specified by:

engineSetParameter in class SignatureSpi

Parameters:

param - the name of the parameter.

value - the parameter value.

Throws:

InvalidParameterException - if the parameter is invalid, already set or is not allowed to be changed.

engineSign

protected byte[] engineSign()
                     throws SignatureException

Description copied from class: SignatureSpi

Generates and returns the signature of all updated data.

This SignatureSpi instance is reset to the state of its last initialization for signing and thus can be used for another signature from the same identity.

Specified by:

engineSign in class SignatureSpi

Returns:

the signature of all updated data.

Throws:

SignatureException - if this SignatureSpi instance is not initialized properly.

engineVerify

protected boolean engineVerify(byte[] sigBytes)
                        throws SignatureException

Description copied from class: SignatureSpi

Indicates whether the given sigBytes can be verified using the public key or a certificate of the signer.

This SignatureSpi instance is reset to the state of its last initialization for verifying and thus can be used to verify another signature of the same signer.

Specified by:

engineVerify in class SignatureSpi

Parameters:

sigBytes - the signature to verify.

Returns:

true if the signature was verified, false otherwise.

Throws:

SignatureException - if this SignatureSpi instance is not initialized properly.