[Pidgin] #16537: TextSecure libpurple support

[Pidgin]

#16537: TextSecure libpurple support
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 Reporter:  onny            |       Owner:  EionRobb
     Type:  plugin request  |      Status:  new
Milestone:                  |   Component:  plugins
  Version:  2.10.11         |  Resolution:
 Keywords:                  |
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Comment (by EionRobb):

 looks like libaxolotl-c has a ssl layer in it (struct
 axolotl_crypto_provider) to be able to specify ssl implementations, so
 that it doesn't have to rely on one crypto lib (libpurple has a similar
 thing with ssl backends)

 Unfortunately, it requires implementations of hmac-sha256, sha512 and aes,
 of which libpurple only has ciphers for hmac-sha256

 still, more good news about not needing openssl

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Ticket URL: <https://developer.pidgin.im/ticket/16537#comment:12>
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