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# Crypto
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The cryptographic primitives (ECDSA and HMAC) implementations in this package
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have been audited by:
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* The BitPay engineering team
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## random
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The `bitcore.Crypto.Random` namespace contains a single function, named
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`getRandomBuffer(size)` that returns a `Buffer` instance with random bytes. It
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may not work depending on the engine that bitcore is running on (doesn't work
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with IE versions lesser than 11).
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## bn
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The `bitcore.Crypto.BN` class contains a wrapper around
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[bn.js](https://github.com/indutny/bn.js), the bignum library used internally
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in bitcore.
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## point
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The `bitcore.Crypto.Point` class contains a wrapper around the class Point of
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[elliptic.js](https://github.com/indutny/elliptic.js), the elliptic curve
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library used internally in bitcore.
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## hash
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The `bitcore.Crypto.Hash` namespace contains a set of hashes and utilities.
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These are either the native `crypto` hash functions from `node.js` or their
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respective browser shims as provided by the `browserify` library.
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## ecdsa
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`bitcore.Crypto.ECDSA` contains a pure javascript implementation of the
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elliptic curve DSA signature scheme.
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