22 #if !defined(MBEDTLS_CONFIG_FILE)
25 #include MBEDTLS_CONFIG_FILE
32 #define MBEDTLS_GCM_ENCRYPT 1
33 #define MBEDTLS_GCM_DECRYPT 0
36 #define MBEDTLS_ERR_GCM_AUTH_FAILED -0x0012
40 #define MBEDTLS_ERR_GCM_HW_ACCEL_FAILED -0x0013
43 #define MBEDTLS_ERR_GCM_BAD_INPUT -0x0014
49 #if !defined(MBEDTLS_GCM_ALT)
62 unsigned char buf[16];
104 const unsigned char *key,
105 unsigned int keybits);
160 const unsigned char *iv,
162 const unsigned char *add,
164 const unsigned char *input,
165 unsigned char *output,
206 const unsigned char *iv,
208 const unsigned char *add,
210 const unsigned char *tag,
212 const unsigned char *input,
213 unsigned char *output);
234 const unsigned char *iv,
236 const unsigned char *add,
268 const unsigned char *input,
269 unsigned char *output);
300 #if defined(MBEDTLS_SELF_TEST)
void mbedtls_gcm_init(mbedtls_gcm_context *ctx)
This function initializes the specified GCM context, to make references valid, and prepares the conte...
int mbedtls_gcm_starts(mbedtls_gcm_context *ctx, int mode, const unsigned char *iv, size_t iv_len, const unsigned char *add, size_t add_len)
This function starts a GCM encryption or decryption operation.
int mbedtls_gcm_self_test(int verbose)
The GCM checkup routine.
void mbedtls_gcm_free(mbedtls_gcm_context *ctx)
This function clears a GCM context and the underlying cipher sub-context.
The GCM context structure.
Configuration options (set of defines)
mbedtls_cipher_context_t cipher_ctx
int mbedtls_gcm_update(mbedtls_gcm_context *ctx, size_t length, const unsigned char *input, unsigned char *output)
This function feeds an input buffer into an ongoing GCM encryption or decryption operation.
struct mbedtls_gcm_context mbedtls_gcm_context
The GCM context structure.
mbedtls_cipher_id_t
Supported cipher types.
This file contains an abstraction interface for use with the cipher primitives provided by the librar...
unsigned char base_ectr[16]
int mbedtls_gcm_setkey(mbedtls_gcm_context *ctx, mbedtls_cipher_id_t cipher, const unsigned char *key, unsigned int keybits)
This function associates a GCM context with a cipher algorithm and a key.
int mbedtls_gcm_finish(mbedtls_gcm_context *ctx, unsigned char *tag, size_t tag_len)
This function finishes the GCM operation and generates the authentication tag.
int mbedtls_gcm_auth_decrypt(mbedtls_gcm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *add, size_t add_len, const unsigned char *tag, size_t tag_len, const unsigned char *input, unsigned char *output)
This function performs a GCM authenticated decryption of a buffer.
int mbedtls_gcm_crypt_and_tag(mbedtls_gcm_context *ctx, int mode, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *add, size_t add_len, const unsigned char *input, unsigned char *output, size_t tag_len, unsigned char *tag)
This function performs GCM encryption or decryption of a buffer.