Package net.i2p.crypto.eddsa.math.bigint
Class BigIntegerScalarOps
java.lang.Object
net.i2p.crypto.eddsa.math.bigint.BigIntegerScalarOps
- All Implemented Interfaces:
Serializable
,ScalarOps
- See Also:
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionbyte[]
multiplyAndAdd
(byte[] a, byte[] b, byte[] c) $r = (a * b + c) \bmod l$byte[]
reduce
(byte[] s) Reduce the given scalar mod $l$.
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Constructor Details
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BigIntegerScalarOps
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Method Details
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reduce
public byte[] reduce(byte[] s) Description copied from interface:ScalarOps
Reduce the given scalar mod $l$.From the Ed25519 paper:
Here we interpret $2b$-bit strings in little-endian form as integers in $\{0, 1,..., 2^{(2b)}-1\}$. -
multiplyAndAdd
public byte[] multiplyAndAdd(byte[] a, byte[] b, byte[] c) Description copied from interface:ScalarOps
$r = (a * b + c) \bmod l$- Specified by:
multiplyAndAdd
in interfaceScalarOps
- Parameters:
a
- a scalarb
- a scalarc
- a scalar- Returns:
- $(a*b + c) \bmod l$
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