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50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
#ifndef PRISM2_CRYPT_H
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#define PRISM2_CRYPT_H
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struct hostap_crypto_ops {
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char *name;
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/* init new crypto context (e.g., allocate private data space,
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* select IV, etc.); returns NULL on failure or pointer to allocated
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* private data on success */
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void * (*init)(int keyidx);
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/* deinitialize crypto context and free allocated private data */
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void (*deinit)(void *priv);
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/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
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* value from decrypt_mpdu is passed as the keyidx value for
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* decrypt_msdu. skb must have enough head and tail room for the
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* encryption; if not, error will be returned; these functions are
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* called for all MPDUs (i.e., fragments).
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*/
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int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
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int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
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/* These functions are called for full MSDUs, i.e. full frames.
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* These can be NULL if full MSDU operations are not needed. */
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int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);
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int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,
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void *priv);
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int (*set_key)(void *key, int len, u8 *seq, void *priv);
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int (*get_key)(void *key, int len, u8 *seq, void *priv);
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/* procfs handler for printing out key information and possible
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* statistics */
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char * (*print_stats)(char *p, void *priv);
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/* maximum number of bytes added by encryption; encrypt buf is
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* allocated with extra_prefix_len bytes, copy of in_buf, and
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* extra_postfix_len; encrypt need not use all this space, but
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* the result must start at the beginning of the buffer and correct
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* length must be returned */
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int extra_prefix_len, extra_postfix_len;
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};
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int hostap_register_crypto_ops(struct hostap_crypto_ops *ops);
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int hostap_unregister_crypto_ops(struct hostap_crypto_ops *ops);
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struct hostap_crypto_ops * hostap_get_crypto_ops(const char *name);
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#endif /* PRISM2_CRYPT_H */
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