Package org.bouncycastle.crypto.signers
Interface DSAKCalculator
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- All Known Implementing Classes:
HMacDSAKCalculator
,RandomDSAKCalculator
public interface DSAKCalculator
Interface define calculators of K values for DSA/ECDSA.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
init(java.math.BigInteger n, java.math.BigInteger d, byte[] message)
Deterministic initialiser.void
init(java.math.BigInteger n, java.security.SecureRandom random)
Non-deterministic initialiser.boolean
isDeterministic()
Return true if this calculator is deterministic, false otherwise.java.math.BigInteger
nextK()
Return the next valid value of K.
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Method Detail
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isDeterministic
boolean isDeterministic()
Return true if this calculator is deterministic, false otherwise.- Returns:
- true if deterministic, otherwise false.
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init
void init(java.math.BigInteger n, java.security.SecureRandom random)
Non-deterministic initialiser.- Parameters:
n
- the order of the DSA group.random
- a source of randomness.
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init
void init(java.math.BigInteger n, java.math.BigInteger d, byte[] message)
Deterministic initialiser.- Parameters:
n
- the order of the DSA group.d
- the DSA private value.message
- the message being signed.
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nextK
java.math.BigInteger nextK()
Return the next valid value of K.- Returns:
- a K value.
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