# module ed25519


## Contents
- [Constants](#Constants)
- [generate_key](#generate_key)
- [new_key_from_seed](#new_key_from_seed)
- [sign](#sign)
- [verify](#verify)
- [PrivateKey](#PrivateKey)
  - [seed](#seed)
  - [public_key](#public_key)
  - [equal](#equal)
  - [sign](#sign)
- [PublicKey](#PublicKey)
  - [equal](#equal)

## Constants
```v
const public_key_size = 32
```

public_key_size is the sizeof public keys in bytes

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```v
const private_key_size = 64
```

private_key_size is the sizeof private keys in bytes

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```v
const signature_size = 64
```

signature_size is the size of signatures generated and verified by this modules, in bytes.

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```v
const seed_size = 32
```

seed_size is the size of private key seeds in bytes

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## generate_key
```v
fn generate_key() !(PublicKey, PrivateKey)
```

generate_key generates a public/private key pair entropy using `crypto.rand`.

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## new_key_from_seed
```v
fn new_key_from_seed(seed []u8) PrivateKey
```

new_key_from_seed calculates a private key from a seed. private keys of RFC 8032 correspond to seeds in this module

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## sign
```v
fn sign(privatekey PrivateKey, message []u8) ![]u8
```

sign`signs the message with privatekey and returns a signature

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## verify
```v
fn verify(publickey PublicKey, message []u8, sig []u8) !bool
```

verify reports whether sig is a valid signature of message by publickey.

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## PrivateKey
```v
type PrivateKey = []u8
```

PrivateKey is Ed25519 private keys

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## seed
```v
fn (priv PrivateKey) seed() []u8
```

seed returns the private key seed corresponding to priv. RFC 8032's private keys correspond to seeds in this module.

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## public_key
```v
fn (priv PrivateKey) public_key() PublicKey
```

public_key returns the []u8 corresponding to priv.

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## equal
```v
fn (priv PrivateKey) equal(x []u8) bool
```

currentyly x not `crypto.PrivateKey`

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## sign
```v
fn (priv PrivateKey) sign(message []u8) ![]u8
```

sign signs the given message with priv.

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## PublicKey
```v
type PublicKey = []u8
```

`PublicKey` is Ed25519 public keys.

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## equal
```v
fn (p PublicKey) equal(x []u8) bool
```

equal reports whether p and x have the same value.

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