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aes.h
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1 /* crypto/aes/aes.h -*- mode:C; c-file-style: "eay" -*- */
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51 
52 #ifndef HEADER_AES_H
53 #define HEADER_AES_H
54 
55 #include <openssl/opensslconf.h>
56 
57 #ifdef OPENSSL_NO_AES
58 #error AES is disabled.
59 #endif
60 
61 #include <stddef.h>
62 
63 #define AES_ENCRYPT 1
64 #define AES_DECRYPT 0
65 
66 /* Because array size can't be a const in C, the following two are macros.
67  Both sizes are in bytes. */
68 #define AES_MAXNR 14
69 #define AES_BLOCK_SIZE 16
70 
71 #ifdef __cplusplus
72 extern "C" {
73 #endif
74 
75 /* This should be a hidden type, but EVP requires that the size be known */
76 struct aes_key_st {
77 #ifdef AES_LONG
78  unsigned long rd_key[4 *(AES_MAXNR + 1)];
79 #else
80  unsigned int rd_key[4 *(AES_MAXNR + 1)];
81 #endif
82  int rounds;
83 };
84 typedef struct aes_key_st AES_KEY;
85 
86 const char *AES_options(void);
87 
88 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
89  AES_KEY *key);
90 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
91  AES_KEY *key);
92 
93 int private_AES_set_encrypt_key(const unsigned char *userKey, const int bits,
94  AES_KEY *key);
95 int private_AES_set_decrypt_key(const unsigned char *userKey, const int bits,
96  AES_KEY *key);
97 
98 void AES_encrypt(const unsigned char *in, unsigned char *out,
99  const AES_KEY *key);
100 void AES_decrypt(const unsigned char *in, unsigned char *out,
101  const AES_KEY *key);
102 
103 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
104  const AES_KEY *key, const int enc);
105 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
106  size_t length, const AES_KEY *key,
107  unsigned char *ivec, const int enc);
108 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
109  size_t length, const AES_KEY *key,
110  unsigned char *ivec, int *num, const int enc);
111 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
112  size_t length, const AES_KEY *key,
113  unsigned char *ivec, int *num, const int enc);
114 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
115  size_t length, const AES_KEY *key,
116  unsigned char *ivec, int *num, const int enc);
117 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
118  size_t length, const AES_KEY *key,
119  unsigned char *ivec, int *num);
120 void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
121  size_t length, const AES_KEY *key,
122  unsigned char ivec[AES_BLOCK_SIZE],
123  unsigned char ecount_buf[AES_BLOCK_SIZE],
124  unsigned int *num);
125 /* NB: the IV is _two_ blocks long */
126 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
127  size_t length, const AES_KEY *key,
128  unsigned char *ivec, const int enc);
129 /* NB: the IV is _four_ blocks long */
130 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
131  size_t length, const AES_KEY *key,
132  const AES_KEY *key2, const unsigned char *ivec,
133  const int enc);
134 
135 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
136  unsigned char *out,
137  const unsigned char *in, unsigned int inlen);
138 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
139  unsigned char *out,
140  const unsigned char *in, unsigned int inlen);
141 
142 
143 #ifdef __cplusplus
144 }
145 #endif
146 
147 #endif /* !HEADER_AES_H */