base58.cpp File Reference

#include <base58.h>
#include <hash.h>
#include <uint256.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <cassert>
#include <cstdint>
#include <cstring>
#include <limits>

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Functions
static bool	DecodeBase58 (const char *psz, std::vector< uint8_t > &vch, int max_ret_len)
std::string	EncodeBase58 (Span< const uint8_t > input)
	Why base-58 instead of standard base-64 encoding? More...
bool	DecodeBase58 (const std::string &str, std::vector< uint8_t > &vchRet, int max_ret_len)
	Decode a base58-encoded string (str) into a byte vector (vchRet). More...
std::string	EncodeBase58Check (Span< const uint8_t > input)
	Encode a byte span into a base58-encoded string, including checksum. More...
static bool	DecodeBase58Check (const char *psz, std::vector< uint8_t > &vchRet, int max_ret_len)
bool	DecodeBase58Check (const std::string &str, std::vector< uint8_t > &vchRet, int max_ret)
	Decode a base58-encoded string (str) that includes a checksum into a byte vector (vchRet), return true if decoding is successful. More...

Variables
static const char *	pszBase58
	All alphanumeric characters except for "0", "I", "O", and "l". More...
static const int8_t	mapBase58 [256]

Function Documentation

DecodeBase58() [1/2]

static bool DecodeBase58 ( const char *  psz, std::vector< uint8_t > &  vch, int  max_ret_len  )

static

Definition at line 38 of file base58.cpp.

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DecodeBase58() [2/2]

bool DecodeBase58	(	const std::string &	str,
		std::vector< uint8_t > &	vchRet,
		int	max_ret_len
	)

Decode a base58-encoded string (str) into a byte vector (vchRet).

return true if decoding is successful.

Definition at line 144 of file base58.cpp.

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DecodeBase58Check() [1/2]

static bool DecodeBase58Check ( const char *  psz, std::vector< uint8_t > &  vchRet, int  max_ret_len  )

static

Definition at line 160 of file base58.cpp.

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DecodeBase58Check() [2/2]

bool DecodeBase58Check	(	const std::string &	str,
		std::vector< uint8_t > &	vchRet,
		int	max_ret
	)

Decode a base58-encoded string (str) that includes a checksum into a byte vector (vchRet), return true if decoding is successful.

Definition at line 181 of file base58.cpp.

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EncodeBase58()

std::string EncodeBase58

(

Span< const uint8_t >

input

)

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 data.
• A string with non-alphanumeric characters is not as easily accepted as input.
• E-mail usually won't line-break if there's no punctuation to break at.
• Double-clicking selects the whole string as one word if it's all alphanumeric. Encode a byte span as a base58-encoded string

Definition at line 101 of file base58.cpp.

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EncodeBase58Check()

std::string EncodeBase58Check

(

Span< const uint8_t >

input

)

Encode a byte span into a base58-encoded string, including checksum.

Definition at line 152 of file base58.cpp.

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Variable Documentation

mapBase58

const int8_t mapBase58[256]

static

Initial value:

= {
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0,  1,  2,  3,  4,  5,  6,  7,
    8,  -1, -1, -1, -1, -1, -1, -1, 9,  10, 11, 12, 13, 14, 15, 16, -1, 17, 18,
    19, 20, 21, -1, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, -1, -1, -1, -1,
    -1, -1, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, -1, 44, 45, 46, 47, 48,
    49, 50, 51, 52, 53, 54, 55, 56, 57, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1,
}

Definition at line 20 of file base58.cpp.

pszBase58

const char* pszBase58

static

Initial value:

=
    "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"

All alphanumeric characters except for "0", "I", "O", and "l".

Definition at line 18 of file base58.cpp.