hostap_crypt.h

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#ifndef PRISM2_CRYPT_H
#define PRISM2_CRYPT_H

struct hostap_crypto_ops {
        char *name;

        /* init new crypto context (e.g., allocate private data space,
         * select IV, etc.); returns NULL on failure or pointer to allocated
         * private data on success */
        void * (*init)(void);

        /* deinitialize crypto context and free allocated private data */
        void (*deinit)(void *priv);

        /* encrypt/decrypt return < 0 on error or number of bytes written
         * to out_buf; len is number of bytes in in_buf */
        int (*encrypt)(u8 *buf, int len, void *priv);
        int (*decrypt)(u8 *buf, int len, void *priv);

        int (*set_key)(int idx, void *key, int len, void *priv);
        int (*get_key)(int idx, void *key, int len, void *priv);

        int (*set_key_idx)(int idx, void *priv);
        int (*get_key_idx)(void *priv);

        /* maximum number of bytes added by encryption; encrypt buf is
         * allocated with extra_prefix_len bytes, copy of in_buf, and
         * extra_postfix_len; encrypt need not use all this space, but
         * the result must start at the beginning of the buffer and correct
         * length must be returned */
        int extra_prefix_len, extra_postfix_len;
};


int hostap_register_crypto_ops(struct hostap_crypto_ops *ops);
int hostap_unregister_crypto_ops(struct hostap_crypto_ops *ops);
struct hostap_crypto_ops * hostap_get_crypto_ops(const char *name);

#endif /* PRISM2_CRYPT_H */

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