[Cdsa-dev] problem whith CSSM_WrapKey. help me, please.

[<ni...@gs...>]

First of all I want to thank YOU for previously aid gived to me.

Unfortunately me a new problem has been introduced:
1) I create a key pairs.
2) I create a symmetrical key (than I "wrap" with the public key created =
previously) with which I decipher a file.

When I try to "wrap" the symmetrical key, the error generated is:
number 8194 --> "CSSMERR_CSP_MEMORY_ERROR".

The fundamental steps are:

1) To crete a key-pairs:

  ret =3D CSSM_CSP_CreateKeyGenContext( csp,
                                      CSSM_ALGID_RSA,
                                      512,
                                      NULL,
                                      NULL,
                                      NULL,
                                      NULL,
                                      NULL,
                                      &ctx );

  ret =3D CSSM_GenerateKeyPair( ctx,
                              CSSM_KEYUSE_WRAP,
                              CSSM_KEYATTR_RETURN_DATA | CSSM_KEYATTR_EXT=
RACTABLE,
                              NULL,
                              &PubKey,
                              CSSM_KEYUSE_UNWRAP,
                              CSSM_KEYATTR_RETURN_DATA | CSSM_KEYATTR_EXT=
RACTABLE,
                              NULL,
                              NULL,
                              &PriKey );


later I write on 2 files the key-pairs.


2) To encrypt:

  ret =3D CSSM_CSP_CreateKeyGenContext( csp,
                                      CSSM_ALGID_DES,
                                      64,
                                      NULL,
                                      NULL,
                                      NULL,
                                      NULL,
                                      NULL,
                                      &ctx );
 =20
  ret =3D CSSM_GenerateKey( ctx,
                          CSSM_KEYUSE_ENCRYPT | CSSM_KEYUSE_DECRYPT,
                          CSSM_KEYATTR_EXTRACTABLE | CSSM_KEYATTR_RETURN_=
DATA,
                          NULL,
                          NULL,
                          &SimKey );

subsequently recovery the key-pairs from the files and I store them into =
PubKey and PriKey.



  ret =3D CSSM_CSP_CreateAsymmetricContext( csp,
                                          CSSM_ALGID_RSA,
                                          NULL,
                                          &PubKey,
                                          CSSM_PADDING_NONE,
                                          &ctx );

  ret =3D CSSM_WrapKey( ctx,
                      NULL,
                      &SimKey,
                      NULL,
                      &WrappedKey );

P.S.
if I execute in cascade the generation of the key-pairs and the "wrap", g=
oes all good.
If I execute the generation of the key-pairs, then I exit from the progra=
m and then I try to "wrap", generates me the error brought back over.

Sorry for the length of the mail, thank  in advance.
Pietro.

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