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mdelete/publicKeyHexModulus

Created May 23, 2015 21:39
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Silly but effective public key modulus extraction in Swift
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publicKeyHexModulus
func publicKeyHexModulus(key: SecKeyRef) -> String {
let s = String(format: "\(key)")
let r1 = s.rangeOfString("modulus: ")!
let r2 = Range<String.Index>(start: advance(r1.startIndex, count(r1)), end: advance(r1.endIndex, (SecKeyGetBlockSize(key) * 2)))
return s.substringWithRange(r2)
}
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