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36 #if !defined(MBEDTLS_CONFIG_FILE)
39 #include MBEDTLS_CONFIG_FILE
46 #define MBEDTLS_GCM_ENCRYPT 1
47 #define MBEDTLS_GCM_DECRYPT 0
49 #define MBEDTLS_ERR_GCM_AUTH_FAILED -0x0012
52 #define MBEDTLS_ERR_GCM_HW_ACCEL_FAILED -0x0013
54 #define MBEDTLS_ERR_GCM_BAD_INPUT -0x0014
60 #if !defined(MBEDTLS_GCM_ALT)
74 unsigned char buf[16];
116 const unsigned char *key,
117 unsigned int keybits );
173 const unsigned char *iv,
175 const unsigned char *add,
177 const unsigned char *input,
178 unsigned char *output,
180 unsigned char *tag );
217 const unsigned char *iv,
219 const unsigned char *add,
221 const unsigned char *tag,
223 const unsigned char *input,
224 unsigned char *output );
245 const unsigned char *iv,
247 const unsigned char *add,
277 const unsigned char *input,
278 unsigned char *output );
309 #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...
void mbedtls_gcm_free(mbedtls_gcm_context *ctx)
This function clears a GCM context and the underlying cipher sub-context.
mbedtls_cipher_id_t
Supported cipher types.
The GCM context structure.
int mbedtls_gcm_self_test(int verbose)
The GCM checkup routine.
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.
This file contains an abstraction interface for use with the cipher primitives provided by the librar...
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_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.
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.
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.
Configuration options (set of defines)
struct mbedtls_gcm_context mbedtls_gcm_context
The GCM context structure.
mbedtls_cipher_context_t cipher_ctx
unsigned char base_ectr[16]
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.