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// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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public enum Randomness {
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/// Returns `size` bytes of random data generated using the default secure random number generator. See
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/// [SecRandomCopyBytes](https://developer.apple.com/documentation/security/1399291-secrandomcopybytes) for more information.
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public static func generateRandomBytes(numberBytes: Int) throws -> Data {
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var randomBytes: Data = Data(count: numberBytes)
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let result = randomBytes.withUnsafeMutableBytes {
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SecRandomCopyBytes(kSecRandomDefault, numberBytes, $0.baseAddress!)
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}
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guard result == errSecSuccess, randomBytes.count == numberBytes else {
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print("Problem generating random bytes")
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throw GeneralError.randomGenerationFailed
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}
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return randomBytes
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}
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}
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