[#HexStr-0a]
= HexStr
:mrdocs:

Convert a span of bytes to a lower‐case hexadecimal string.

== Synopsis

Declared in `<crypto/hex_base.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::string
HexStr(std::span<uint8_t const> s);
----

== Return Value

The lower‐case hexadecimal representation of `s.`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *s*
| The bytes to encode.
|===


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