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GitHub - janmaru/mahamudra-cryptography-notation: A simple package that implemen...
source link: https://github.com/janmaru/mahamudra-cryptography-notation
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# Mahamudra.Cryptography.Notation
[Photo by Tezos on Unsplash]
EncodeBase58
What is Base58 encoding?
Base58 is a binary-to-text encoding created by Satoshi Nakamoto for Bitcoin addresses. The original Bitcoin client source code explains the reasoning behind base58 encoding:
base58.h:
Why base-58 instead of standard base-64 encoding?
- Don't want 0OIl characters that look the same in some fonts and could be used to create visually identical looking account numbers.
- A string with non-alphanumeric characters is not as easily accepted as an account number.
- E-mail usually won't line-break if there's no punctuation to break at.
- Doubleclicking selects the whole number as one word if it's all alphanumeric.
A simple package that implements the base-58 encoding.
Usage
member this.EncodePlainv2 (bdata:byte[]):string =
let data = bdata |> Array.toList
let rec toBigInt = function
|[], acc -> acc
|h::t, acc -> toBigInt(t, acc*256I + bigint(int h))
let rec base58encode = function
| i,acc when i>0I ->
let reminder = ref 0I
let dividend = bigint.DivRem(i, 58I, reminder)
let char = ArryDigits.[(int)reminder.contents]
base58encode(dividend, char::acc)
| _,acc -> acc
let appendOnes =
let rec insertOnes = function
| h::t,acc when h=0uy -> insertOnes(t, '1'::acc)
| _,acc -> acc
insertOnes(data, [])
let big = toBigInt(data, 0I)
let encoded = appendOnes @ base58encode(big, []) |> List.toArray
encoded |> System.String
[<TestMethod>]
member this.EncodePlain_ShouldGiveString1_True () =
let value = [|0x00uy; 0x00uy; 0x00uy; 0x01uy |]
let string1 = "1112";
let base58 = new Base58()
let encoding = base58.EncodePlain(value);
let encodingv2 = base58.EncodePlainv2(value);
Assert.AreEqual(encoding, string1)
Assert.AreEqual(encodingv2, string1)Flaticon License
Free for personal and commercial purpose with attribution.
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