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105 lines
2.6 KiB
105 lines
2.6 KiB
/* |
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* AEAD: Authenticated Encryption with Associated Data |
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* |
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* Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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*/ |
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#ifndef _CRYPTO_AEAD_H |
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#define _CRYPTO_AEAD_H |
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#include <linux/crypto.h> |
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#include <linux/kernel.h> |
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#include <linux/slab.h> |
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/** |
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* struct aead_givcrypt_request - AEAD request with IV generation |
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* @seq: Sequence number for IV generation |
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* @giv: Space for generated IV |
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* @areq: The AEAD request itself |
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*/ |
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struct aead_givcrypt_request { |
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u64 seq; |
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u8 *giv; |
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struct aead_request areq; |
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}; |
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static inline struct crypto_aead *aead_givcrypt_reqtfm( |
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struct aead_givcrypt_request *req) |
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{ |
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return crypto_aead_reqtfm(&req->areq); |
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} |
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static inline int crypto_aead_givencrypt(struct aead_givcrypt_request *req) |
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{ |
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struct aead_tfm *crt = crypto_aead_crt(aead_givcrypt_reqtfm(req)); |
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return crt->givencrypt(req); |
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}; |
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static inline int crypto_aead_givdecrypt(struct aead_givcrypt_request *req) |
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{ |
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struct aead_tfm *crt = crypto_aead_crt(aead_givcrypt_reqtfm(req)); |
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return crt->givdecrypt(req); |
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}; |
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static inline void aead_givcrypt_set_tfm(struct aead_givcrypt_request *req, |
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struct crypto_aead *tfm) |
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{ |
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req->areq.base.tfm = crypto_aead_tfm(tfm); |
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} |
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static inline struct aead_givcrypt_request *aead_givcrypt_alloc( |
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struct crypto_aead *tfm, gfp_t gfp) |
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{ |
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struct aead_givcrypt_request *req; |
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req = kmalloc(sizeof(struct aead_givcrypt_request) + |
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crypto_aead_reqsize(tfm), gfp); |
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if (likely(req)) |
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aead_givcrypt_set_tfm(req, tfm); |
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return req; |
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} |
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static inline void aead_givcrypt_free(struct aead_givcrypt_request *req) |
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{ |
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kfree(req); |
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} |
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static inline void aead_givcrypt_set_callback( |
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struct aead_givcrypt_request *req, u32 flags, |
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crypto_completion_t compl, void *data) |
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{ |
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aead_request_set_callback(&req->areq, flags, compl, data); |
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} |
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static inline void aead_givcrypt_set_crypt(struct aead_givcrypt_request *req, |
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struct scatterlist *src, |
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struct scatterlist *dst, |
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unsigned int nbytes, void *iv) |
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{ |
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aead_request_set_crypt(&req->areq, src, dst, nbytes, iv); |
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} |
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static inline void aead_givcrypt_set_assoc(struct aead_givcrypt_request *req, |
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struct scatterlist *assoc, |
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unsigned int assoclen) |
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{ |
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aead_request_set_assoc(&req->areq, assoc, assoclen); |
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} |
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static inline void aead_givcrypt_set_giv(struct aead_givcrypt_request *req, |
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u8 *giv, u64 seq) |
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{ |
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req->giv = giv; |
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req->seq = seq; |
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} |
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#endif /* _CRYPTO_AEAD_H */
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