Package org.bouncycastle.crypto
Interface DSA
- All Known Subinterfaces:
DSAExt
- All Known Implementing Classes:
DSASigner
,DSTU4145Signer
,ECDSASigner
,ECGOST3410_2012Signer
,ECGOST3410Signer
,ECNRSigner
,GOST3410Signer
public interface DSA
interface for classes implementing algorithms modeled similar to the Digital Signature Alorithm.
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Method Summary
Modifier and TypeMethodDescriptiongenerateSignature
(byte[] message) sign the passed in message (usually the output of a hash function).void
init
(boolean forSigning, CipherParameters param) initialise the signer for signature generation or signature verification.boolean
verifySignature
(byte[] message, BigInteger r, BigInteger s) verify the message message against the signature values r and s.
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Method Details
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init
initialise the signer for signature generation or signature verification.- Parameters:
forSigning
- true if we are generating a signature, false otherwise.param
- key parameters for signature generation.
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generateSignature
sign the passed in message (usually the output of a hash function).- Parameters:
message
- the message to be signed.- Returns:
- two big integers representing the r and s values respectively.
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verifySignature
verify the message message against the signature values r and s.- 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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