[#BIP324Cipher-2constructor-09]
= xref:BIP324Cipher.adoc[BIP324Cipher]::BIP324Cipher
:relfileprefix: ../
:mrdocs:

Constructors

== Synopses

Declared in `<bip324.h>`

No default constructor; keys must be provided to create a BIP324Cipher.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BIP324Cipher/2constructor-0a.adoc[BIP324Cipher]() = delete;
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Initialize a BIP324 cipher with specified key and encoding entropy (testing only).


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:BIP324Cipher/2constructor-034.adoc[BIP324Cipher](
    xref:CKey.adoc[CKey] const& key,
    std::span<std::byte const> ent32) noexcept;
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[.small]#xref:BIP324Cipher/2constructor-034.adoc[_» more..._]#

Initialize a BIP324 cipher with specified key (testing only).


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:BIP324Cipher/2constructor-037.adoc[BIP324Cipher](
    xref:CKey.adoc[CKey] const& key,
    xref:EllSwiftPubKey.adoc[EllSwiftPubKey] const& pubkey) noexcept;
----

[.small]#xref:BIP324Cipher/2constructor-037.adoc[_» more..._]#

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| Our private key used for the ECDH key exchange.
| *ent32*
| 32 bytes of entropy used to encode our public key.
| *pubkey*
| Our precomputed ElligatorSwift‐encoded public key.
|===


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