https://github.com/coinspace/monerolib

Monero JavaScript library
https://github.com/coinspace/monerolib

js monero

Last synced: about 2 months ago
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Monero JavaScript library

• Host: GitHub
• URL: https://github.com/coinspace/monerolib
• Owner: CoinSpace
• License: mit
• Created: 2021-03-01T20:03:17.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2023-06-21T10:26:33.000Z (over 1 year ago)
• Last Synced: 2024-10-14T04:21:11.012Z (3 months ago)
• Topics: js, monero
• Language: JavaScript
• Homepage:
• Size: 4.96 MB
• Stars: 7
• Watchers: 5
• Forks: 4
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# monerolib

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Monero JavaScript library.

## Install

```

npm i monerolib

```

## Common

* `p` - private/secret key, it is scalar

* `P` - public key, it is point

* `pV` - private/secret view key

* `PV` - public view key

* `pS` - private/secret spend key

* `PS` - public spend key

* `HS()` - convert hash to scalar `hashToScalar`

* `G` - is the base point

Key derivation `generateKeyDerivation` means:

```

derivation = P * p * 8

```

## Subaddress

```

pSi = pS + HS(pV | i)

pVi = pV * pSi

```

```

PSi = PS + HS(pV | i) * G

PVi = pV * PSi

PSi = (pS + HS(pV | i)) * G

PVi = pV * (pS + HS(pV | i)) * G

```

## Outputs

* `r` - is the transaction private/secret key

* `R` - is the transaction public key, `txPubKey`

* `X` - is the stealth address or one time address `targetKey`

Fro address:

```

// Address (it is public key)

R = r * G

// Subaddress (it is some public data)

R = r * PSi

```

Sending:

```

// Address

X = Hs(r * PV | i)G + PS

// Subaddress

X = Hs(r * PVi | i)G + PSi

```

Receiving:

```

// Address

X = Hs(R * pV|i)G + PS

// Subaddress

X = Hs(R * pV|i)G + PSi

```

It is equal because:

```

// Address

R * pV = r * G * pV = r * PV 

// Subaddress

R * pV = r * PSi * pV = r * PVi

```

`r * PV` and `R * pV` is a key derivation

## Inputs

* `Hp()` - convert hash to point `hashToPoint` or more correctly `hashToEc`

* `x` - private/secret key of **stealth address** O_o

* `J` - is the key image `keyImage`

```

x = Hs(r * PV|i) + pS

x = Hs(R * pV|i) + pS

```

Key image is:

```

J = x * Hp(X)

```