Interface GenericJcaSignatureContext.VerifyLengthResolver

Enclosing class:

GenericJcaSignatureContext

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface GenericJcaSignatureContext.VerifyLengthResolver

Strategy for determining the expected signature length in VERIFY mode.

The resolver is evaluated during construction and should return the fixed tag length for verification.

Method Summary

Modifier and Type	Method	Description
static GenericJcaSignatureContext.VerifyLengthResolver	fixed(int len)	Returns a resolver that always reports a fixed length.
int	resolve(PublicKey publicKey)	Resolves the expected signature length for a given public key in VERIFY mode.

Method Details

resolve

int resolve(PublicKey publicKey)
     throws GeneralSecurityException

Resolves the expected signature length for a given public key in VERIFY mode.

Parameters:

publicKey - public key used for verification

Returns:

exact number of bytes expected in the verification tag

Throws:

GeneralSecurityException - if the length cannot be determined

fixed

static GenericJcaSignatureContext.VerifyLengthResolver fixed(int len)

Returns a resolver that always reports a fixed length.

Parameters:

len - positive length in bytes

Returns:

resolver returning len

Throws:

IllegalArgumentException - if len <= 0