$ npm install key-encoder
To get started, first define your key encoder and raw private/public keys.
var KeyEncoder = require('key-encoder'),
keyEncoder = new KeyEncoder('secp256k1')As shown above, there is built in support for SECP256k1 (the curve Bitcoin uses), but you can pass in your own curve parameters for any curve you'd like.
var EC = require('elliptic').ec
var encoderOptions = {
curveParameters: [1, 3, 132, 0, 10],
privatePEMOptions: {label: 'EC PRIVATE KEY'},
publicPEMOptions: {label: 'PUBLIC KEY'},
curve: new EC('secp256k1')
}
var keyEncoder = new KeyEncoder(encoderOptions)var rawPrivateKey = '844055cca13efd78ce79a4c3a4c5aba5db0ebeb7ae9d56906c03d333c5668d5b',
rawPublicKey = '04147b79e9e1dd3324ceea115ff4037b6c877c73777131418bfb2b713effd0f502327b923861581bd5535eeae006765269f404f5f5c52214e9721b04aa7d040a75'Encode to and from raw, PEM, and DER formats.
var pemPrivateKey = keyEncoder.encodePrivate(rawPrivateKey, 'raw', 'pem')Example output:
-----BEGIN EC PRIVATE KEY-----
MHQCAQEEIIRAVcyhPv14znmkw6TFq6XbDr63rp1WkGwD0zPFZo1boAcGBSuBBAAK
oUQDQgAEFHt56eHdMyTO6hFf9AN7bId8c3dxMUGL+ytxPv/Q9QIye5I4YVgb1VNe
6uAGdlJp9AT19cUiFOlyGwSqfQQKdQ==
-----END EC PRIVATE KEY-----
var derPrivateKey = keyEncoder.encodePrivate(rawPrivateKey, 'raw', 'der')Example output:
30740201010420844055cca13efd78ce79a4c3a4c5aba5db0ebeb7ae9d56906c03d333c5668d5ba00706052b8104000aa14403420004147b79e9e1dd3324ceea115ff4037b6c877c73777131418bfb2b713effd0f502327b923861581bd5535eeae006765269f404f5f5c52214e9721b04aa7d040a75
Encode to and from raw, PEM, and DER formats.
var pemPublicKey = keyEncoder.encodePublic(rawPublicKey, 'raw', 'pem')Example output:
-----BEGIN PUBLIC KEY-----
MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEFHt56eHdMyTO6hFf9AN7bId8c3dxMUGL
+ytxPv/Q9QIye5I4YVgb1VNe6uAGdlJp9AT19cUiFOlyGwSqfQQKdQ==
-----END PUBLIC KEY-----
var derPublicKey = keyEncoder.encodePublic(rawPublicKey, 'raw', 'der')Example output:
3056301006072a8648ce3d020106052b8104000a03420004147b79e9e1dd3324ceea115ff4037b6c877c73777131418bfb2b713effd0f502327b923861581bd5535eeae006765269f404f5f5c52214e9721b04aa7d040a75
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