diff options
Diffstat (limited to 'src/openvpn/crypto_backend.h')
| -rw-r--r-- | src/openvpn/crypto_backend.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/openvpn/crypto_backend.h b/src/openvpn/crypto_backend.h index 5ae47e6..4e45df0 100644 --- a/src/openvpn/crypto_backend.h +++ b/src/openvpn/crypto_backend.h @@ -223,13 +223,31 @@ int cipher_kt_block_size (const cipher_kt_t *cipher_kt); /** * Returns the mode that the cipher runs in. * - * @param cipher_kt Static cipher parameters + * @param cipher_kt Static cipher parameters. May not be NULL. * * @return Cipher mode, either \c OPENVPN_MODE_CBC, \c * OPENVPN_MODE_OFB or \c OPENVPN_MODE_CFB */ int cipher_kt_mode (const cipher_kt_t *cipher_kt); +/** + * Check if the supplied cipher is a supported CBC mode cipher. + * + * @param cipher Static cipher parameters. + * + * @return true iff the cipher is a CBC mode cipher. + */ +bool cipher_kt_mode_cbc(const cipher_kt_t *cipher); + +/** + * Check if the supplied cipher is a supported OFB or CFB mode cipher. + * + * @param cipher Static cipher parameters. + * + * @return true iff the cipher is a OFB or CFB mode cipher. + */ +bool cipher_kt_mode_ofb_cfb(const cipher_kt_t *cipher); + /** * @@ -288,6 +306,16 @@ int cipher_ctx_block_size (const cipher_ctx_t *ctx); int cipher_ctx_mode (const cipher_ctx_t *ctx); /** + * Returns the static cipher parameters for this context. + * + * @param ctx Cipher's context. May not be NULL. + * + * @return Static cipher parameters for the supplied context. + */ +const cipher_kt_t *cipher_ctx_get_cipher_kt (const cipher_ctx_t *ctx) + __attribute__((nonnull)); + +/** * Resets the given cipher context, setting the IV to the specified value. * Preserves the associated key information. * |