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| author | Martin Willi <martin@strongswan.org> | 2008-04-30 14:02:25 +0000 |
|---|---|---|
| committer | Martin Willi <martin@strongswan.org> | 2008-04-30 14:02:25 +0000 |
| commit | f5475fa440db647c524e04bead3f4599653499a8 (patch) | |
| tree | 1707c193d078d6083c9c97eadd33f774b8e2ed74 /src/libstrongswan/plugins/openssl/openssl_crypter.c | |
| parent | d691080cfc4e5f9c0b955a1d7d53ad20c1be5a7a (diff) | |
| download | strongswan-f5475fa440db647c524e04bead3f4599653499a8.tar.bz2 strongswan-f5475fa440db647c524e04bead3f4599653499a8.tar.xz | |
crypter_t api supports in-place encryption using NULL as output parameter
Diffstat (limited to 'src/libstrongswan/plugins/openssl/openssl_crypter.c')
| -rw-r--r-- | src/libstrongswan/plugins/openssl/openssl_crypter.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/libstrongswan/plugins/openssl/openssl_crypter.c b/src/libstrongswan/plugins/openssl/openssl_crypter.c index 8cbeac5d4..8b9b37904 100644 --- a/src/libstrongswan/plugins/openssl/openssl_crypter.c +++ b/src/libstrongswan/plugins/openssl/openssl_crypter.c @@ -116,13 +116,20 @@ static void crypt(private_openssl_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *dst, int enc) { int len; + u_char *out; + + out = data.ptr; + if (dst) + { + *dst = chunk_alloc(data.len); + out = dst->ptr; + } EVP_CIPHER_CTX ctx; EVP_CIPHER_CTX_init(&ctx); EVP_CipherInit_ex(&ctx, this->cipher, NULL, this->key.ptr, iv.ptr, enc); EVP_CIPHER_CTX_set_padding(&ctx, 0); /* disable padding */ - *dst = chunk_alloc(data.len); - EVP_CipherUpdate(&ctx, dst->ptr, &len, data.ptr, data.len); - EVP_CipherFinal_ex(&ctx, dst->ptr, &len); /* since padding is disabled this does nothing */ + EVP_CipherUpdate(&ctx, out, &len, data.ptr, data.len); + EVP_CipherFinal_ex(&ctx, out, &len); /* since padding is disabled this does nothing */ EVP_CIPHER_CTX_cleanup(&ctx); } |