b42724a64b
* aes: add support for GCM Galois Counter Mode (AEAD) * add tag functions * variable length IV * set crypt direction * remove usage of old AES api * aes: set IV using EVP_CipherInit_ex
27 lines
796 B
C
27 lines
796 B
C
/**
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* @file re_aes.h Interface to AES (Advanced Encryption Standard)
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*
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* Copyright (C) 2010 Creytiv.com
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*/
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#ifndef AES_BLOCK_SIZE
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#define AES_BLOCK_SIZE 16
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#endif
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/** AES mode */
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enum aes_mode {
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AES_MODE_CTR, /**< AES Counter mode (CTR) */
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AES_MODE_GCM, /**< AES Galois Counter Mode (GCM) */
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};
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struct aes;
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int aes_alloc(struct aes **stp, enum aes_mode mode,
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const uint8_t *key, size_t key_bits,
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const uint8_t *iv);
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void aes_set_iv(struct aes *aes, const uint8_t *iv);
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int aes_encr(struct aes *aes, uint8_t *out, const uint8_t *in, size_t len);
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int aes_decr(struct aes *aes, uint8_t *out, const uint8_t *in, size_t len);
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int aes_get_authtag(struct aes *aes, uint8_t *tag, size_t taglen);
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int aes_authenticate(struct aes *aes, const uint8_t *tag, size_t taglen);
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