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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | 1x 37x 37x 43x 43x 36x 2x 34x 9x 9x 3x 3x 3x 1x 3x 3x 3x 6x 26x 25x 25x 25x 25x 25x 25x 25x 64x 1x 63x 63x 145x 145x 130x 12x 12x 56x 55x 3x 1x 2x 127x 5x 43x 43x 43x 15x 15x 15x 15x 15x 15x 28x 28x 26x 26x | import {Base58} from '../base58'
import {isInstanceOf} from '../utils'
import {getPublic} from '../crypto/get-public'
import {sharedSecret} from '../crypto/shared-secret'
import {sign} from '../crypto/sign'
import {generate} from '../crypto/generate'
import {
Bytes,
BytesType,
Checksum256,
Checksum256Type,
Checksum512,
KeyType,
PublicKey,
Signature,
} from '../'
export type PrivateKeyType = PrivateKey | string
export class PrivateKey {
type: KeyType
data: Bytes
/** Create PrivateKey object from representing types. */
static from(value: PrivateKeyType) {
Iif (isInstanceOf(value, PrivateKey)) {
return value
} else {
return this.fromString(value)
}
}
/**
* Create PrivateKey object from a string representation.
* Accepts WIF (5...) and Antelope/EOSIO (PVT_...) style private keys.
*/
static fromString(string: string, ignoreChecksumError = false) {
try {
const {type, data} = decodeKey(string)
if (this.isAllZero(data)) {
throw new Error('Invalid private key: All-zero private key is not allowed')
}
return new this(type, data)
} catch (error: any) {
error.message = `Invalid private key (${error.message})`
if (
ignoreChecksumError &&
isInstanceOf(error, Base58.DecodingError) &&
error.code === Base58.ErrorCode.E_CHECKSUM
) {
const type = string.startsWith('PVT_R1') ? KeyType.R1 : KeyType.K1
const data = new Bytes(error.info.data)
if (data.length === 33) {
data.dropFirst()
}
data.zeropad(32, true)
Iif (this.isAllZero(data)) {
throw new Error('Invalid private key: All-zero private key is not allowed')
}
return new this(type, data)
}
throw error
}
}
/**
* Generate new PrivateKey.
* @throws If a secure random source isn't available.
*/
static generate(type: KeyType | string) {
const keyType = KeyType.from(type)
const maxRetries = 3
let attempts = 0
let data: Bytes
do {
Iif (attempts >= maxRetries) {
throw new Error('Failed to generate valid private key: Maximum retries exceeded')
}
data = new Bytes(generate(keyType))
attempts++
} while (this.isAllZero(data))
return new PrivateKey(keyType, data)
}
/** @internal */
constructor(type: KeyType, data: Bytes) {
if ((type === KeyType.K1 || type === KeyType.R1) && data.length !== 32) {
throw new Error('Invalid private key length')
}
this.type = type
this.data = data
}
/**
* Sign message digest using this key.
* @throws If the key type isn't R1 or K1.
*/
signDigest(digest: Checksum256Type) {
digest = Checksum256.from(digest)
return Signature.from(sign(this.data.array, digest.array, this.type))
}
/**
* Sign message using this key.
* @throws If the key type isn't R1 or K1.
*/
signMessage(message: BytesType) {
return this.signDigest(Checksum256.hash(message))
}
/**
* Derive the shared secret between this private key and given public key.
* The `legacy` option replicates the divergent pre-2.0 x-coordinate derivation.
* @throws If the key type isn't R1 or K1.
*/
sharedSecret(publicKey: PublicKey, options?: {legacy?: boolean}) {
const shared = sharedSecret(
this.data.array,
publicKey.data.array,
this.type,
options && options.legacy
)
return Checksum512.hash(shared)
}
/**
* Get the corresponding public key.
* @throws If the key type isn't R1 or K1.
*/
toPublic() {
const compressed = getPublic(this.data.array, this.type)
return PublicKey.from({compressed, type: this.type})
}
/**
* Return WIF representation of this private key
* @throws If the key type isn't K1.
*/
toWif() {
if (this.type !== KeyType.K1) {
throw new Error('Unable to generate WIF for non-k1 key')
}
return Base58.encodeCheck(Bytes.from([0x80]).appending(this.data))
}
static isAllZero(data: Bytes): boolean {
return data.array.every((byte) => byte === 0)
}
/**
* Return the key in Antelope/EOSIO PVT_<type>_<base58check> format.
*/
toString() {
return `PVT_${this.type}_${Base58.encodeRipemd160Check(this.data, this.type)}`
}
toJSON() {
return this.toString()
}
}
/** @internal */
function decodeKey(value: string) {
const type = typeof value
Iif (type !== 'string') {
throw new Error(`Expected string, got ${type}`)
}
if (value.startsWith('PVT_')) {
// Antelope/EOSIO format
const parts = value.split('_')
Iif (parts.length !== 3) {
throw new Error('Invalid PVT format')
}
const type = KeyType.from(parts[1])
let size: number | undefined
switch (type) {
case KeyType.K1:
case KeyType.R1:
size = 32
break
}
const data = Base58.decodeRipemd160Check(parts[2], size, type)
return {type, data}
} else {
// WIF format
const type = KeyType.K1
const data = Base58.decodeCheck(value)
Iif (data.array[0] !== 0x80) {
throw new Error('Invalid WIF')
}
return {type, data: data.droppingFirst()}
}
}
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