Package org.bouncycastle.crypto.signers
Class GOST3410Signer
java.lang.Object
org.bouncycastle.crypto.signers.GOST3410Signer
GOST R 34.10-94 Signature Algorithm
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiongenerateSignature
(byte[] message) generate a signature for the given message using the key we were initialised with.getOrder()
Get the order of the group that the r, s values in signatures belong to.void
init
(boolean forSigning, CipherParameters param) initialise the signer for signature generation or signature verification.boolean
verifySignature
(byte[] message, BigInteger r, BigInteger s) return true if the value r and s represent a GOST3410 signature for the passed in message for standard GOST3410 the message should be a GOST3411 hash of the real message to be verified.
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Constructor Details
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GOST3410Signer
public GOST3410Signer()
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Method Details
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init
Description copied from interface:DSA
initialise the signer for signature generation or signature verification. -
getOrder
Description copied from interface:DSAExt
Get the order of the group that the r, s values in signatures belong to. -
generateSignature
generate a signature for the given message using the key we were initialised with. For conventional GOST3410 the message should be a GOST3411 hash of the message of interest.- Specified by:
generateSignature
in interfaceDSA
- Parameters:
message
- the message that will be verified later.- Returns:
- two big integers representing the r and s values respectively.
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verifySignature
return true if the value r and s represent a GOST3410 signature for the passed in message for standard GOST3410 the message should be a GOST3411 hash of the real message to be verified.- Specified by:
verifySignature
in interfaceDSA
- Parameters:
message
- the message that was supposed to have been signed.r
- the r signature value.s
- the s signature value.
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