[PATCH] OAEP support

Daiki Ueno ueno at unixuser.org
Tue Jun 30 05:53:21 CEST 2009


The attached patch adds OAEP padding support to libgcrypt.

Here are some notes:

- Before encryption/decryption, it reads necessary parameters from
  `flags'.  For example,

    (flags oaep hash sha1 label "test")
    (value #11223344556677889900AA#))

  for encryption and,

    (flags oaep hash sha1 label "test")

  for decryption.

- After decryption, it stores the decoded value as a `decoded' token
  instead of `value', unlike other encodings (`raw' and `pkcs1').  This
  is for backward compatibility.  For example,

  (decoded #11223344556677889900AA#)

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Daiki Ueno

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