Class MGF1BytesGenerator
java.lang.Object
org.gudy.bouncycastle.crypto.generators.MGF1BytesGenerator
- All Implemented Interfaces:
DerivationFunction
Generator for MGF1 as defined in PKCS 1v2
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionint
generateBytes
(byte[] out, int outOff, int len) fill len bytes of the output buffer with bytes generated from the derivation function.return the underlying digest.void
init
(DerivationParameters param) private void
ItoOSP
(int i, byte[] sp) int to octet string.
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Field Details
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digest
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seed
private byte[] seed -
hLen
private int hLen
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Constructor Details
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MGF1BytesGenerator
- Parameters:
digest
- the digest to be used as the source of generated bytes
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Method Details
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init
- Specified by:
init
in interfaceDerivationFunction
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getDigest
return the underlying digest.- Specified by:
getDigest
in interfaceDerivationFunction
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ItoOSP
private void ItoOSP(int i, byte[] sp) int to octet string. -
generateBytes
public int generateBytes(byte[] out, int outOff, int len) throws DataLengthException, IllegalArgumentException fill len bytes of the output buffer with bytes generated from the derivation function.- Specified by:
generateBytes
in interfaceDerivationFunction
- Throws:
IllegalArgumentException
- if the size of the request will cause an overflow.DataLengthException
- if the out buffer is too small.
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