git ssb

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var ecc = require('eccjs')
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var crypto = require('crypto')
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var Blake2s = require('blake2s')
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var curve = ecc.curves.k256
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function hash (message) {
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  return new Blake2s().update(message).digest()
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}
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module.exports = {
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  curves: ['k256'],
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  generate: function (seed) {
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    //we use eccjs.restore here, instead of eccjs.generate
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    //because we trust node's random generator much more than
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    //sjcl's (via crypto-browserify's polyfil this uses
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    //webcrypto's random generator in the browser)
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    var keys = ecc.restore(curve, seed || crypto.randomBytes(32))
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    return {
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      curve: 'k256',
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      public: keys.public,
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      private: keys.private
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    }
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  },
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  sign: function (private, message) {
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    return ecc.sign(curve, private, hash(message))
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  },
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  verify: function (public, sig, message) {
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    return ecc.verify(curve, public, sig, hash(message))
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  },
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  restore: function (seed) {
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    return ecc.restore(curve, seed)
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  }
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}
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