Bitcoin Core  0.20.99
P2P Digital Currency
Functions | Variables
base58.cpp File Reference
#include <base58.h>
#include <hash.h>
#include <uint256.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <assert.h>
#include <limits>
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Functions

static NODISCARD bool DecodeBase58 (const char *psz, std::vector< unsigned char > &vch, int max_ret_len)
 
std::string EncodeBase58 (Span< const unsigned char > input)
 Why base-58 instead of standard base-64 encoding? More...
 
bool DecodeBase58 (const std::string &str, std::vector< unsigned char > &vchRet, int max_ret_len)
 Decode a base58-encoded string (str) into a byte vector (vchRet). More...
 
std::string EncodeBase58Check (Span< const unsigned char > input)
 Encode a byte span into a base58-encoded string, including checksum. More...
 
static NODISCARD bool DecodeBase58Check (const char *psz, std::vector< unsigned char > &vchRet, int max_ret_len)
 
bool DecodeBase58Check (const std::string &str, std::vector< unsigned char > &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 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
 All alphanumeric characters except for "0", "I", "O", and "l". More...
 
static const int8_t mapBase58 [256]
 

Function Documentation

◆ DecodeBase58() [1/2]

static NODISCARD bool DecodeBase58 ( const char *  psz,
std::vector< unsigned char > &  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< unsigned char > &  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 127 of file base58.cpp.

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◆ DecodeBase58Check() [1/2]

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

Definition at line 144 of file base58.cpp.

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◆ DecodeBase58Check() [2/2]

bool DecodeBase58Check ( const std::string &  str,
std::vector< unsigned char > &  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 161 of file base58.cpp.

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◆ EncodeBase58()

std::string EncodeBase58 ( Span< const unsigned char >  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 87 of file base58.cpp.

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◆ EncodeBase58Check()

std::string EncodeBase58Check ( Span< const unsigned char >  input)

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

Definition at line 135 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 19 of file base58.cpp.

◆ pszBase58

const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
static

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

Definition at line 18 of file base58.cpp.