Class GMSSStateAwareSigner
java.lang.Object
org.bouncycastle.pqc.legacy.crypto.gmss.GMSSStateAwareSigner
- All Implemented Interfaces:
MessageSigner
,StateAwareMessageSigner
This class implements the GMSS signature scheme, but allows multiple signatures to be generated.
Note: getUpdatedPrivateKey() needs to be called to fetch the current value of the usable private key.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionbyte[]
generateSignature
(byte[] message) sign the passed in message (usually the output of a hash function).Return the current version of the private key with the updated state.void
init
(boolean forSigning, CipherParameters param) initialise the signer for signature generation or signature verification.boolean
verifySignature
(byte[] message, byte[] signature) verify the message message against the signature value.
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Constructor Details
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GMSSStateAwareSigner
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Method Details
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init
Description copied from interface:MessageSigner
initialise the signer for signature generation or signature verification.- Specified by:
init
in interfaceMessageSigner
- Parameters:
forSigning
- true if we are generating a signature, false otherwise.param
- key parameters for signature generation.
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generateSignature
public byte[] generateSignature(byte[] message) Description copied from interface:MessageSigner
sign the passed in message (usually the output of a hash function).- Specified by:
generateSignature
in interfaceMessageSigner
- Parameters:
message
- the message to be signed.- Returns:
- the signature of the message
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verifySignature
public boolean verifySignature(byte[] message, byte[] signature) Description copied from interface:MessageSigner
verify the message message against the signature value.- Specified by:
verifySignature
in interfaceMessageSigner
- Parameters:
message
- the message that was supposed to have been signed.signature
- the signature of the message
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getUpdatedPrivateKey
Description copied from interface:StateAwareMessageSigner
Return the current version of the private key with the updated state.Note: calling this method will effectively disable the Signer from being used for further signature generation without another call to init().
- Specified by:
getUpdatedPrivateKey
in interfaceStateAwareMessageSigner
- Returns:
- an updated private key object, which can be used for later signature generation.
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