55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#ifndef _IPXE_AES_H
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#define _IPXE_AES_H
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/** @file
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*
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* AES algorithm
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <ipxe/crypto.h>
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/** AES blocksize */
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#define AES_BLOCKSIZE 16
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/** Maximum number of AES rounds */
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#define AES_MAX_ROUNDS 15
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/** AES matrix */
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union aes_matrix {
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/** Viewed as an array of bytes */
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uint8_t byte[16];
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/** Viewed as an array of four-byte columns */
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uint32_t column[4];
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} __attribute__ (( packed ));
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/** AES round keys */
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struct aes_round_keys {
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/** Round keys */
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union aes_matrix key[AES_MAX_ROUNDS];
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};
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/** AES context */
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struct aes_context {
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/** Encryption keys */
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struct aes_round_keys encrypt;
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/** Decryption keys */
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struct aes_round_keys decrypt;
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/** Number of rounds */
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unsigned int rounds;
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};
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/** AES context size */
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#define AES_CTX_SIZE sizeof ( struct aes_context )
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extern struct cipher_algorithm aes_algorithm;
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extern struct cipher_algorithm aes_ecb_algorithm;
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extern struct cipher_algorithm aes_cbc_algorithm;
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int aes_wrap ( const void *kek, const void *src, void *dest, int nblk );
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int aes_unwrap ( const void *kek, const void *src, void *dest, int nblk );
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#endif /* _IPXE_AES_H */
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