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doc for base64_sane_decode

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This commit is contained in:
Karel Miko 2018-03-27 09:54:33 +02:00
parent 964f61709f
commit ad8067eaf7
1 changed files with 15 additions and 3 deletions
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18
doc/crypt.tex
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@ -6549,9 +6549,8 @@ int base64_decode( const char *in,
unsigned long *outlen);
\end{verbatim}
The function \textit{base64\_decode} works in a relaxed way which allows decoding some inputs that do not strictly follow the standard.
The relaxed mode ignores white-spaces (\textit{CR}, \textit{LF}, \textit{TAB}, \textit{space}), does not care about trailing \textit{=}
and also ignores the last input byte in case it is \textit{NUL}.
The function \textit{base64\_decode} works in a dangerously relaxed way which allows decoding some inputs that do not strictly follow the standard.
If you want to be strict during decoding you can use:
\index{base64\_strict\_decode()}
\begin{verbatim}
@ -6561,6 +6560,16 @@ int base64_strict_decode( const char *in,
unsigned long *outlen);
\end{verbatim}
There is also so called sane mode that ignores white-spaces (\textit{CR}, \textit{LF}, \textit{TAB}, \textit{space}),
does not care about trailing \textit{=} and also ignores the last input byte in case it is \textit{NUL}.
\index{base64\_sane\_decode()}
\begin{verbatim}
int base64_sane_decode( const char *in,
unsigned long len,
unsigned char *out,
unsigned long *outlen);
\end{verbatim}
\subsection{URL--safe 'base64url' encoding}
The characters used in the mappings are:
\begin{verbatim}
@ -6581,6 +6590,9 @@ int base64url_decode( const char *in, unsigned long len,
int base64url_strict_decode( const char *in, unsigned long len,
unsigned char *out, unsigned long *outlen);
int base64url_sane_decode( const char *in, unsigned long len,
unsigned char *out, unsigned long *outlen);
\end{verbatim}
\mysection{Base32 Encoding and Decoding}