Base58? | Bitcointalksearch.org

KawalGrover

newbie

Activity: 38

Merit: 0

Quote from: jadescorpio on March 22, 2014, 07:11:58 AM

Why do you need to convert bytes to base58 for addresses and wallet import format private keys? How can it be useful?

From the bitcoin wiki:

// 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.

jadescorpio

newbie

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Why do you need to convert bytes to base58 for addresses and wallet import format private keys? How can it be useful?

tkbx

sr. member

Activity: 350

Merit: 251

Quote from: deepceleron on March 21, 2014, 04:17:20 AM

http://we.lovebitco.in/paperwal.py

Has two functions o_b58():with bitcoin address checksum and b58encode():non checksum. You can use it as an import library. Since it makes a bitcoin address, everything library-wise that you need to make a paper wallet is obviously included.

https://bitcointalksearch.org/topic/ann-python-paper-wallet-generator-with-strong-randomness-361092

Perfect, thanks

Just in case anyone finds this question by googling and wants the solution:

Code:

def b58encode(v):
	""" gavin bitcointool - encode v, which is a string of bytes, to base58.
	"""
	_b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
	_b58base = len(_b58chars)

	#(c style int->base256)
	long_value = 0L
	for (i, c) in enumerate(v[::-1]):
		long_value += (256**i) * ord(c)
	result = ''
	while long_value >= _b58base:
		div, mod = divmod(long_value, _b58base)
		result = _b58chars[mod] + result
		long_value = div
	result = _b58chars[long_value] + result
	zeropad = 0
	for c in v:
		if c == '\x00':
			zeropad += 1
		else:
			break
	return '1'*zeropad + result

deepceleron

legendary

Activity: 1512

Merit: 1036

http://we.lovebitco.in/paperwal.py

Has two functions o_b58():with bitcoin address checksum and b58encode():non checksum. You can use it as an import library. Since it makes a bitcoin address, everything library-wise that you need to make a paper wallet is obviously included.

https://bitcointalksearch.org/topic/ann-python-paper-wallet-generator-with-strong-randomness-361092

flatfly

legendary

Activity: 1106

Merit: 1016

090930

I have some really tight code for this on my home PC. Will try to remember to post it this when I get a chance this weekend - that is, if nobody beats me to it.

There are literally dozens of implementations around.
If you can't wait, you can try digging through the Electrum and Armory repos.

tkbx

sr. member

Activity: 350

Merit: 251

Where can I find a Python function to convert bytes to base58 for addresses and wallet import format private keys?

The wiki only has what appears to be some kind of pseudocode.

Topic: Base58? (Read 881 times)